EQJW145: Heating controller - sauter-controls.com sauter-controls ...

R 

EQJW145: 

Heating controller 

Operating manual 

7010015003 B

7010015003 B 

Printed in Switzerland 

Subject to changes 

© Fr. Sauter AG 

Im Surinam 55 

CH - 4016 Basel 

www.sauter-controls.com 

2 7010015003 B 

© Fr. Sauter AG



Table of contents 


Table of contents ........................................................................................................ 3 

Symbols used in this manual .................................................................................... 7 

1 General information ............................................................................................ 9 

1.1 Introduction................................................................................................ 9 

1.2 Safety information ..................................................................................... 9 

2 Description of the operating controls ............................................................. 11 

2.1 Front view of the EQJW 145 ................................................................... 11 

2.2 Top Rotary switches (heating) ................................................................ 12 

2.3 Bottom rotary switch (hot water/pilot timer) ............................................. 12 

2.4 Input Button ............................................................................................. 13 

2.5 ESC key .................................................................................................. 13 

2.6 Display ..................................................................................................... 13 

3 Commissioning .................................................................................................. 15 

3.1 Operating the device for the first time ..................................................... 15 

3.1.1 Setting the time ....................................................................................... 15 

3.1.2 Setting the date ....................................................................................... 16 

3.2 Commissioning level ............................................................................... 16 

3.2.1 List of SERVice parameters .................................................................... 17 

3.2.2 Access to commissioning level ............................................................... 18 

3.2.3 View SERVice parameters ...................................................................... 18 

3.2.4 Change SERVice parameters ................................................................. 18 

3.3 SERVice level ......................................................................................... 19 

3.3.1 Access to SERVice level ......................................................................... 19 

3.3.2 View SERVice parameters ...................................................................... 20 

3.3.3 Change SERVice parameters ................................................................. 20 

3.3.4 List of SERVice parameters .................................................................... 21 

3.3.5 Explanations for individual SERVice parameters.................................... 25 

3.4 Communication level ............................................................................... 38 

3.4.1 Access to communication level ............................................................... 39 

3.4.2 Viewing the communication parameters ................................................. 39 

3.4.3 Changing communication parameters .................................................... 39 

3.4.4 List of communication parameters .......................................................... 40 

3.4.5 Explanations of individual communication parameters ........................... 42 

4 Operation ............................................................................................................ 46 

4.1 Operating modes ..................................................................................... 46 

4.1.1 Displays when automatic mode is set ..................................................... 47 

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4.1.2 Displays when back-up mode, reduced mode and normal mode are set49 

4.2 Entering the setpoint temperature in normal mode ................................. 50 

4.3 Enter setpoint temperature in reduced mode.......................................... 51 

4.4 Weekly switching programme for heating ............................................... 51 

4.4.1 Calling up the weekly switching programme ........................................... 52 

4.4.2 View switching commands ...................................................................... 52 

4.4.3 Enter a switching command .................................................................... 53 

4.4.4 Changing and deleting a switching command ........................................ 53 

4.5 Calendar switching programme .............................................................. 54 

4.5.1 Calling up the calendar switching programme ........................................ 54 




4.6 Temporary temperature change for the heating circuit ........................... 56 

4.7 Entering DHW temperatures ................................................................... 57 

4.7.1 Notes on the boosted DHW temperature ................................................ 58 

4.8 Weekly switching programme for domestic hot water ............................ 58 

4.8.1 Calling up the weekly switching programme ........................................... 59 




4.9 Weekly switching programme for pilot timer/circulating pump ................ 61 

4.10 Calling up the weekly switching programme ........................................... 62 

4.10.1 View switching command ........................................................................ 62 

4.10.2 Enter switching command ....................................................................... 62 

4.10.3 Change/delete switching command ........................................................ 63 

4.11 Once-only tank charge ............................................................................ 63 

5 Manual mode ...................................................................................................... 64 

5.1 Access to manual mode (heating) .......................................................... 64 

5.2 Access to manual mode (domestic hot water, configurable output and 

second final control element) .................................................................. 64 

5.3 Set valve position .................................................................................... 64 

5.4 Set status of other outputs (pumps, configurable output) for manual 

mode ....................................................................................................... 65 

5.5 Exit manual mode ................................................................................... 65 

5.6 Check measured values in manual mode ............................................... 65 

6 Communication functions ................................................................................ 66 

6.1 Bus wiring ................................................................................................ 66 

6.2 Device bus............................................................................................... 66 

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6.2.1 Assigning addresses ............................................................................... 66 

6.2.2 Room operating unit EDB 100 ................................................................ 67 

6.2.3 Sending and receiving outdoor temperatures ......................................... 67 

6.2.4 Requesting and processing a heat requirement ..................................... 67 

6.2.5 Requesting and processing a return temperature .................................. 67 

6.2.6 Synchronising the time ............................................................................ 67 

6.3 Modbus communication .......................................................................... 68 

6.3.1 Modbus data points (holding register) ..................................................... 69 

6.3.2 Modbus data points (coils) ...................................................................... 75 

6.4 Modem operation .................................................................................... 76 

6.4.1 Connection with the modem .................................................................... 76 

6.4.2 Modbus operation via modem ................................................................. 76 

6.4.3 Sending SMS if there is a fault on the installation .................................. 77 

6.4.4 Displays for modem operation ................................................................ 77 

6.5 Setting parameters using the PC ............................................................ 78 

7 Faults .................................................................................................................. 80 

7.1 Displaying faults ...................................................................................... 80 

7.1.1 Error list ................................................................................................... 80 

7.1.2 Device status ........................................................................................... 80 

7.2 Logbook................................................................................................... 81 

7.3 Reset functions ....................................................................................... 82 

7.4 Actions to deal with faulty temperature value measurements ................ 82 

8 Using the controller ........................................................................................... 84 

8.1 General information ................................................................................. 84 

8.2 Examples of use ...................................................................................... 84 

8.2.1 Control model 1 ....................................................................................... 85 

8.2.2 Control model 2 ....................................................................................... 88 

8.2.3 Control model 3 ....................................................................................... 89 

9 Economy tips ..................................................................................................... 90 

10 Resistance values for the Ni1000 sensors ..................................................... 92 

11 Accessories ....................................................................................................... 94 

12 Wiring diagram .................................................................................................. 94 

13 Dimension drawing ........................................................................................... 94 

14 Technical data .................................................................................................... 96 

14.1 Overview of technical data ...................................................................... 96 

14.2 Overview of main functions ..................................................................... 98 

15 Overview of controller settings ...................................................................... 102 

15.1 List of SERVice parameters .................................................................. 102 

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15.2 List of communication parameters ........................................................ 103 

15.3 Weekly switching programme: heating ................................................. 104 

15.4 Calendar switching programme: heating .............................................. 104 

15.5 Weekly switching programme: domestic hot water ............................... 105 

15.6 Weekly switching programme: pilot timer/circulating pump .................. 105 

Table of Figures ...................................................................................................... 106 

List of tables ............................................................................................................ 107 

Abbreviations .......................................................................................................... 108 

Index ........................................................................................................................ 109 

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Symbols used in this manual 


Information 

Information concerning the use of the product. 

Warnings 

Factory setting of the EQJW 145 (e.g. manufacturer's specified control 

values, switching times, etc.) 

The operating instructions explain the various functions of the device, step by 

step, using the following symbols: 

'PROG' is shown on the display, flashing 

'09:00' is shown on the display, not flashing 

〈 .... 〉 

Press key ... 

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General information 

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1 General information 

1.1 Introduction 

1.2 Safety information 

Congratulations! You have chosen a Sauter heating controller. The 

equitherm® EQJW 145 is a quality product from one of the leading 

manufacturers of control technology products for the heating, ventilation and 

air conditioning industry. 

The EQJW 145 is a compact, weather-compensated heating controller used 

to regulate flow temperatures and domestic hot water preparation. In 

automatic mode, the EQJW 145 reduces the room temperature during the 

night (reduced mode) by means of switching commands from the weekly time 

switch (weekly switching programme), and during the day it switches to the 

normal temperature. Domestic hot water preparation is switched on or off via 

another switching programme. There is a choice of two adjustable 

temperatures for domestic hot water. The EQJW 145 is suitable for buildings 

of all types. A fixed basic programme (factory setting) ensures that 

commissioning is simple. Any adaptations to the heating system which might 

be needed are implemented using SERVice parameters. Automatic 

summertime/wintertime change-over eliminates the need for residents to 

adjust the time twice a year. The equitherm® EQJW 145 incorporates a 

variety of protective functions such as the anti-frost function and the pump 

anti-jamming facility. Additional functions such as automatic switch-off are 

also implemented. For every installation, these features ensure optimal 

comfort with the minimum use of energy. 

Analogue or digital room operating units can be connected to the EQJW 145, 

enabling convenient remote control of the controller from the living room. 

A programmable output is provided for additional tasks. For example, it may 

be used as a pilot timer output, as a signal for a collective fault alarm, and to 

activate a circulating pump for domestic hot water. The communication 

interface makes it possible to network several controllers, to connect to a 

control station and to send alarms to a mobile telephone via SMS. 

Special care is required in order to prevent injuries, damage by fire or 

damage to equipment. After the device has been installed by a specialist in 

accordance with the Installation Instructions enclosed with it (MV506103), 

please read these instructions on operating it. Local regulations must be 

followed during installation. The controller is not a safety-relevant component. 

The anti-frost, overheating protection and flow temperature limitation 

functions do not replace the relevant safety equipment. 

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General information 

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2 Description of the operating controls 

2.1 Front view of the EQJW 145 

2 

°C 

h 

sec 

1 

1 

4 

3 

Fig. 1: EQJW 145 - Front view 

1 

2 

3 

4 

Rotary switch 

Display 

ESC button 

Input button 

The device has a rotary switch with 10 positions, an input button and a 

button. 

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Description of the operating controls 

2.2 Top Rotary switches (heating) 

The switch positions have these meanings: 

Operating modes: 

Automatic mode according 

to switching programme 

Regulator is 

continuously in 

1 

normal mode 

Regulator is 


reduced mode 

Regulator is 


2 

back-up mode 

Access to manual mode 

for heating 

Inputs: 

Setpoint adjustment 

Normal mode 

Setpoint adjustment 

Reduced mode 

Enter 

weekly and 

yearly programme for 

heating 

Limited (unlimited) 

temperature change 

Access to SERVice and 

communication level 

Fig. 2: EQJW 145 - Top Rotary Switches 

1 

2 

Normal mode corresponds to nominal mode as per EN 12098-1. 

Back-up mode means that the heating is switched off and the anti-frost function is active. 

2.3 Bottom rotary switch (hot water/pilot timer) 

Operating modes: 

Automatic mode for domestic hot 

water according to switching 

programme 

Continuous heating to 

increased domestic hot 

water temperature 

Inputs: 

Setpoint for increased 

domestic hot water temperature 

Continuous heating 

to normal domestic hot 

water temperature 

Domestic hot water 

heating switched off 

Access to manual mode 

Fig. 3: EQJW 145 - Bottom Rotary Switches 

If the rotary switches are used to select a prohibited combination of positions, 

e.g. simultaneous entry of setpoints for heating and domestic hot water 

preparation, the controller will show this symbol: 

In this case, one of the switches should be set to the symbol or to another 

mode. 

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2.4 Input Button 

You can use the input Button to scroll through menus, and 

to select or change values. Unless explicitly described 

otherwise, you can scroll through or change 

menus/values in a ring structure. There is no 'limit stop' 

for adjusting values or scrolling. 

The input Button has a key function, i.e. you can press it. 

This is used to select the parameter just shown for 

changing, or to confirm a flashing value, or to access a 

lower menu level. 

2.5 ESC key 

Press the ESC key to cancel operations, or to return from 

a lower menu item to the next level up. 

2.6 Display 

The device has an LC display (see 2.1), which can show various items of 

information at the same time. The next illustration shows what the symbols 

mean: 

0 1 2 3 4 5 6 7 8..........21 22 23 24 

Times for normal mode on the current day 

Time, date, setpoints, actual values, etc. 

Automatic mode according to the weekly and calendar switching 

programme. flashing: temperature change for limited (unlimited) period 

Heating circuit is in normal mode flashing. Optimisation takes place on 

changing to normal mode. 

Heating circuit is in reduced mode flashing. Optimisation takes place on 

changing to reduced or off mode. 

Heating circuit is in back-up mode. flashing: anti-frost function is active 

At least one sensor is faulty (or not connected) 

Heating medium pump is switched on 

Final control element 1 is opened ( ) or closed ( ) 

Final control element 2 is opened ( ) or closed ( ) 

Display of setpoint temperature. flashing: display of actual temperature 

Display of flow temperature 

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Description of the operating controls 

Display of outdoor temperature 

Display of room temperature 

Display of return temperature 

Display of tank temperature 

Controller is in summer mode 

Calendar switching programme mode is currently active 

Domestic hot water. flashing: with increased temperature 

Charge pump switched on 

Status of the configurable output: relay closed 

An error has occurred (see 7) 

Floor drying function (heating function) is active 

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3 Commissioning 

3.1 Operating the device for the first time 

3.1.1 Setting the time 

When you operate the equitherm® EQJW 145 for the first time, you must set 

the date and time. Essentially, once this is done, the controller is ready for 

use. However, depending on the application, it may be necessary to change 

further settings after this. 

To enable you to set the time, you must first move the bottom rotary switch 

into one of the following positions (see 4.1): 

Off mode 

Continuous heating to normal DHW temperature 

Continuous heating to increased DHW temperature 

Automatic mode 

Procedure 

1. Set the top rotary switch to automatic mode. 

• The time is shown. 

2. Press the input button. 

• the time flashes ... 

3. Turn the input button. 

• The time is set. 

4. Press the input button again. 

• The new time is confirmed. 

If several devices are connected to each other 

via a device bus (see 3.4.4) and you set the clock on one device, the time 

and date are also set on all the other devices. 

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Commissioning 

3.1.2 Setting the date 

To enable you to set the date, you must first move the bottom rotary switch 

into one of the following positions (see 4.1): 

Off mode 




Procedure 

1. Set the top rotary switch to automatic mode. 

• The time is shown. 

2. Turn the input button until the date is displayed 

(day/month and year are shown alternately). 


• The number of the year flashes... 


• The year is changed. 


• The year is confirmed and the day/month 

is shown. 


• The date is changed. 

7. Press the input button, 

• The new date is confirmed. 

3.2 Commissioning level 

In commissioning level, a specialist can perform the basic settings on the 

GZP which are important for commissioning. Direct access to specified 

service parameters is enabled. 

Incorrect parameterisation (setting) of the heating controller 

CAUTION! 

It can cause major faults or damage to the installation. 

The commissioning level must only be enabled by a specialist. 

Some of the parameters cannot be changed. They can only be viewed 

(version number, status information). 

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3.2.1 List of SERVice parameters 

The following SERVice parameters can be reached on commissioning level. 

Parameter 

Description Range Step value 

SP01 

Software version Y.XX (read only) 

SP06 1 Control model 

• 1 = one control valve on the primary side 

• 2 = one control valve on the secondary side 

• 3 = two control valves on the primary side 

0...3 1 

SP15 40 Proportional band, PI controller in K 2...100 1 

SP16 40 MOD3: Proportional band, PI controller in K (2nd control circuit) 2...100 1 

SP19 120 Runtime for final control element in sec 30...960 15 

SP20 180 Runtime for second final control element in sec 

• MOD1, 2: for diverter valve (SP34 = 3 or 4) 

• MOD3: for second control valve 

30...960 15 

SP21 5 Minimum limitation of flow temperature T F (heating circuit) in °C 5…100 1 

SP22 75 Maximum limitation of flow temperature T F (heating circuit) in °C 20…150 1 

SP34 1 Functions for domestic hot water 

• 0 = not enabled. 

• 1 = MOD 1, 2: with sep. charge pump using one 

DHW sensor Tw1 

• 2 = MOD 1, 2: with sep. charge pump using two 

DHW sensors Tw1, Tw2 

• 3 = MOD 1, 2: with diverter valve using one 

DHW sensor Tw1 

• 4 = MOD 1, 2: with diverter valve using two 

DHW sensors Tw1, Tw2 

0…4 1 

SP35 60 Maximum setpoint for drinking water temperature in °C 10…70 1 

SP36 5 MOD 1, 2: Switching difference for domestic hot water in K 1...30 1 

SP37 70 Maximum setpoint for increased DHW temperature/[°C] (anti-legionellae 

function) 

10…90 1 

SP38 10 Setpoint boost for domestic hot water in K 0…30 1 

SP41 1.4 Slope of heating characteristic 0.2...5.0 0.1 

SP60 0 Floor drying 

Tab. 1: SERVice parameter 

• 0 = not enabled. 7d = enabled. 8 = malfunction 

• 9 = successfully completed 

0.7d.8.9 0.7d. 8.9 

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Commissioning 

An overview of the SERVice parameters and explanations for individual 

SERVice parameters is given in these sections: 'List of SERVice parameters' 

and 'Explanations for individual SERVice parameters'. 

3.2.2 Access to commissioning level 

1. Set the upper rotary switch to the Service 

position. 

2. Press the input button, select 'In' (= 

commissioning). 


4. Turn the input button, 

show the code. 

3.2.3 View SERVice parameters 


• The first SERVice parameter is displayed. 


2. Select the SERVice parameter you want. 

sec 


• The value of the parameter is shown. 

4. To leave the value unchanged. 

5. Press ESC to exit the display. 

3.2.4 Change SERVice parameters 

Press the ESC key to cancel the operation. The value is not accepted unless 

it has already been confirmed. 

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sec 

sec 




• The value of the parameter is changed. 


• The new value is confirmed. 

3.3 SERVice level 

In SERVice level, a specialist can adapt the basic setting of the EQJW 145 to 

the installation so as to meet specific requirements. For this purpose, also 

please note the installation instructions enclosed with the EQJW 145 

(MV506103). 

CAUTION! 


It can cause major faults on the installation, injuries to people or damage to 

the installation. 

SERVice mode must only be enabled by a specialist. 

3.3.1 Access to SERVice level 

Some of the parameters cannot be changed - they can only be viewed 

(version number, status information). 

1. Set the upper rotary switch to the Service 

position. 



4. Show the code. 


6. The first SERVice parameter is displayed. 

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Commissioning 

3.3.2 View SERVice parameters 



sec 



4. To leave the value unchanged, press ESC to 

exit the display. 

3.3.3 Change SERVice parameters 

Press the ESC key to cancel the operation. The value is not accepted unless 

it has already been confirmed. 

sec 





sec 





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3.3.4 List of SERVice parameters 

Parameter Description Range Step value 

SP01 

Software version Y.XX (read only) 

SP02 0 Device status (error coding) (read only) 

1 

SP03 View logbook - 

SP04 0 Software reset 

SP05 0 Manual mode 

SP06 1 Control model 

• 0 = no Reset 

• 1 = factory setting for SE + CO parameters 

• 2 = factory setting for switching commands 

• 3 = factory setting for SE- + CO parameters + 

switching commands 

• 0 = manual mode not enabled 

• 1 = manual mode enabled 

• 1 = one control valve on the primary side 

• 2 = one control valve on the secondary side 

• 3 = two control valves on the primary side 

SP07 0 Effect of binary / pulse input (terminals 21, 22) 

• 0 = HK in back-up mode if contact is closed. 

• 1 = HK in reduced mode if contact is closed. 

• 2 = HK in nominal mode if contact is closed. 

• 3 = Pulse input for quantity metering 

• 4 = Seepage limitation 

• 5 = Input for fault signal 

SP08 0 Room temperature recording 

SP09 0 Connect room temperature 

• 0 = no room temperature recording 

• 1 = connect room sensor 

• 2 = connect EGS52/15 or EGT 333 with room sensor 

• 3 = connect EGS52/15 or EGT 333 without room 

sensor 

• 4 = MOD1,2: 2nd flow sensor for DHW (SP49 = 2) 

• 0 = not enabled 

• 1 = enabled if TRi > TRs 

0...3 1 

0...1 1 

0...3 1 

0…5 1 

0...4 1 

0...3 1 

• 2 = enabled if TRi < TRs 

• 3 = enabled if TRi TRs 

SP10 20 Scanning time for room temperature if connected /[min] 1…100 1 

SP11 0 Correction to room temperature TRi in K -6.0...+6.0 0.1 

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Commissioning 


SP12 0 Correction to outdoor temperature TA in K -10.0…+10.0 0.1 

SP13 0 Return temperature recording 

0…1 1 

• 0 = return temperature is not recorded 

• 1 = return temperature is recorded 

SP14 0 Correction to return temperature TRF (MOD3: TRF of heating circuit) -10.0…+10.0 0.1 

SP15 40 Proportional band, PI controller in K 2...100 1 

SP16 40 MOD3: Proportional band, PI controller in K (2nd control circuit) 2...100 1 

SP17 240 Reset time, PI controller in sec 5...1000 5 

SP18 240 MOD3: Reset time, PI controller in sec (2nd control circuit) 5...1000 5 

SP19 120 Runtime for final control element in sec 30...960 15 

SP20 180 Runtime for second final control element in sec 

30...960 15 

MOD1, 2: for diverter valve (SP34 = 3 or 4) 

MOD3: for second control valve 

SP21 5 Minimum limitation for flow temperature TF (heating circuit) in °C 5 …100 1 

SP22 75 Maximum limitation for flow temperature TF (heating circuit) in °C 20…150 1 

SP23 90 Upper limit value for max. limitation of TRF during heating 

in °C 

5…150 1 

SP24 90 Lower limit value for max. limitation of TRF during heating in °C 5…150 1 

SP25 0 Outdoor temperature at which the sliding part of the limit function for 

TRF begins, in °C 

-30...+50 1 

SP26 1.0 Slope of limitation function for TRF in [K/K] 0.0…5.0 0.1 

SP27 90 Maximum limitation for return temperature TRF during DHW 

heating in °C 

SP28 1 Level of intervention when limit value of the return temperature is 

breached max. TRF in [K/K] (TN fixed at 400s) 

5…150 1 

0.1…10 0.1 

SP29 no Limit value pulse/min for max. flow or power of heating and DHW no 0.1...16.0. 

60...16000 

SP30 no Limit value pulse/min for max. flow or power of heating only no 0.1...16.0. 

60...16000 

SP31 no Limit value pulse/min for max. flow or power of DHW only no 0.1...16.0. 

60...16000 

0.1/1/10 

0.1/1/10 

0.1/1/10 

SP32 0.0 Intervention intensity in K/min if limit value for flow or power is violated 0.0…30.0 0.1 

SP33 no Limit value pulse/min for min. flow or power no. 0.1...16.0. 

60...16000 

0.1/1/10 

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SP34 1 Functions for DHW 

• 0 = not enabled. 

• 1 = MOD 1, 2: with sep. charge pump using one 

DHW sensor 

• 2 = MOD 1, 2: with sep. charge pump using two 

DHW sensors 

• 3 = MOD 1, 2: with diverter valve using one DHW 

sensor 

• 4 = MOD 1, 2: with diverter valve using two DHW 

sensors 

0…4 1 

SP35 60 Maximum setpoint for domestic hot water temp./[°C] 10…70 1 

SP36 5 MOD 1, 2: switching difference for DHW in K 1...30 1 

SP37 70 Maximum setpoint for increased DHW temperature/[°C] 10…90 1 

SP38 10 Setpoint increase for charge of drinking water in K 0…30 1 

SP39 -30 Outdoor temperature limit value for operation of domestic hot water 

heating in °C 

• TA < limit value parallel operation 

• TA > limit value domestic hot water with priority 

-30…50 1 

Note: only valid if value SP34 = 1 or 2 

SP40 4 After-run time for charge pump for domestic hot water/[min] 0…20 1 

SP41 1.4 Slope of heating characteristic 0.2...5.0 0.1 

SP42 10 Setpoint boost for demand request via device bus/ [ K] 0…30 1 

SP43 0.0 External heat portion/[K] 0.0...5.0 0.1 

SP44 15 Heating limit/[°C] 0...39 1 

SP45 21 Damping of outside temperature measurement for heating limit in 

hours 

• SP45 = 0 TA used without damping for heating limit 

function 

• SP45 > 0 time constant for damping TA for heating 

limit function 

0…30 1 

SP46 -16 Design temperature/[°C] -30...0 1 

SP47 2 After-run factor for heating medium pump (after-run time = runtime for 

final control element x after-run factor) 

SP48 2 Anti-frost function 


• 1 = enabled (TP off when frost) 

• 2 = enabled (TP on when frost) 

1…10 1 

0...2 1 

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Commissioning 


SP49 0 Configurable output 

• 0 = no function 

• 1 = pilot timer function 

• 2 = 2nd tank charge pump (MOD1, 2 only) 

• 3 = forced control of heating medium pump at low 

speed in reduced and back-up mode 

• 4 = collective fault alarm 

• 5 = circulating pump 

• 6 = heat requirement 

SP50 0 Pump anti-jamming facility 

• 0 = not enabled. 1 = enabled 

0…6 1 

0…1 1 

SP51 25.10 Summer/winter time changeover 01.01 ... 

31.12 

SP52 25.03 Winter/summer time changeover 

• SP51 = SP52 means no summer/winter time 

changeover 

SP54 0 Temporary heating mode 

• 0 = not active 

SP53 0 Optimisation 

• 1 = active 


01.01 ... 

31.12 

0…1 1 

0…1 1 

SP60 0 Floor drying 


• 7d = functional heating 

• 25°C = ready-for-laying heating 

• 8 = malfunction 

• 9 = successfully completed 

0.7d.25°C.8.9 0.7d.25°C.8 

.9 

SP61 0 Type of sensor 

• 0 = Ni1000 

• 1 = Pt1000 

Tab. 2: SERVice parameter 

0…1 0 

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3.3.5 Explanations for individual SERVice parameters 

SP01 

SP02 

View software version 

The controller's software version number is shown. 

View device status 

SERVice parameter 2 allows you to read the device status of the EQJW 145. 

Value 0 means that the EQJW 145 is operating without faults. The coding for 

faults is shown in section7.1.2. Once the fault is rectified, the value for the 

SERVice parameter is reset automatically. 

Note: this coded error description is primarily used to signal faults via bus, 

modem or SMS. Faults can be conveniently read directly from the ERROR 

display on the controller (see7.1). 

SP03 

SP04 

SP05 

SP06 

Logbook 

This is not a parameter but an indicator for the logbook, in which the date, 

time and type of fault is entered for every fault that occurs during operation. 

Further information on this function can be found in section 7.2. 

Software reset 

Switching commands and/or SERVice or communication parameters are 

returned to the factory setting. To do this, the value of the SERVice 

parameter must be changed and confirmed. After this, the EQJW 145 

performs the relevant reset and assigns value 0 to the parameter. 

Manual mode 

SERVice parameter SP05 is used to disable or enable manual mode. If the 

value of the parameter is 0, manual mode is disabled. 

Control model 

Various control models are stored in the EQJW 145. Use this parameter to 

specify the model that the EQJW 145 uses as the basis for control. The 

following control models are available for selection. 

• MOD1: one control valve on the primary side 

(SP06 =1) 

• MOD2: one control valve on the secondary side (SP06 = 2) 

• MOD3: two control valves on the primary side (SP06 = 3) 

With MOD1 and MOD2, it is possible not only to control a heating circuit but 

also to prepare DHW. SERVice parameter 33 can be used to configure the 

DHW preparation. 

With MOD3, the second control valve on the primary side is used for fixedvalue 

control (e.g. for DHW preparation). The assignment of T F2 or T RF2 to 

the appropriate terminal is done automatically (see wiring diagram). More 

information about the control models and the most important applications is 

given in the section on 'Information on applications'. 

7010015003 B 25 

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Commissioning 

SP07 

Effect of binary / pulse input (terminals 21, 22) 

If the external switching contact is closed, this SERVice parameter can be set 

appropriately (SP07 = 0, 1 or 2) to influence the heating programme, as long 

as the controller is in automatic mode. If the contact is opened again, the 

controller will operate according to the weekly / calendar switching 

programme again and the following apply: 

• 0 = HK in back-up mode if contact is closed 

• 1 = HK in reduced mode if contact is closed 

• 2 = HK in nominal mode if contact is closed 

Alternatively, the input can be used for quantity metering (and therefore for 

quantity limitation as well), to limit see page or to forward a fault signal (using 

a modem via SMS or via the configurable relay output to another device). For 

SP07, the values mean: 

• 3 = input used as pulse input for quantity metering 

• 4 = input used to limit seepage 

The minimum flow can be limited. A signal from the auxiliary contacts of a 

control unit can be used to do this. If the contact input is closed, the valve 

on the primary side closes and is not opened again until the setpoint for 

the flow temperature is 5K higher than the actual value. 

• 5 = input is a fault signal input, used to forward fault signals from other 

devices 

SP08 

Room temperature recording 

Various types of room temperature sensor can be connected: 

• 0 = no room temperature recording 

• 1 = connect room sensor 

• 2 = connect EGS52/15 or EGT333 with room sensor 

• 3 = connect EGS52/15 or EGT333 without room sensor 

• 4 = only for MOD1,2 with second tank charge pump (SP49 = 2): the 

analogue input (terminal 28) is not used as a room sensor but as a second 

flow sensor for DHW preparation (also see the section on 'Application 

examples'). 

Room operating unit EGS52/15 allows you to switch over the controller's 

mode remotely. Room operating unit EDB100 can also be connected via the 

device bus and used to switch the mode over. The mode on the EQJW145 

can also be changed using a control station via Modbus. In case of 

contradictory commands, the following priority applies: direct settings on 

EQJW145 have priority 1. A setting using room operating unit EDB100 via 

device bus or a preset via Modbus have priority 2. The setting via the binary 

input has priority 3. Settings on room operating unit EGS52/15 have the 

lowest priority. If the setpoint for the room temperature is changed via the 

setpoint transmitter of the EGS 52/15 or EGT 333 room operating units, it 

also changes the actual value for the room temperature at the sensor input of 

26 7010015003 B 

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the EQJW 145. This, in turn, means that the flow temperature and, therefore, 

the heating capacity, for the room are altered accordingly. 

SP09 

Connect room temperature 

A room temperature sensor (resistance sensor or device bus) is required for 

this function. The flow temperature setpoint is changed – in divergence from 

the setpoint according to the heating characteristic – if the room temperature 

in the reference room diverges from the room setpoint. The change in flow 

temperature is limited to a maximum of ± 30K. 

SP09 = 1 or 2 can be used to allow the room temperature connection to 

influence the flow setpoint in one direction only. The meanings are: 

• 0 = flow temperature is not changed, i.e. the room temperature connection 

is not enabled 

• 1 = flow setpoint can only be reduced, i.e. the room temperature 

connection is only enabled if TRi > TRs 

• 2 = flow setpoint can only be increased, i.e. the room temperature 

connection is only enabled if TRi < TRs 

• 3 = flow setpoint can be reduced and increased, i.e. the room temperature 

connection is enabled if TRi TRs 

SP10 

Scanning time for room temperature if connected 

If the room temperature connection is enabled, this SERVice parameter 

determines the period within which a one-off adaptation of the flow setpoint 

can occur. In "heavy" buildings with sluggish heating systems, a higher value 

is more suitable than it would be for buildings of lightweight construction and 

heating that reacts quickly. This time must not be too short, so as to prevent 

control fluctuations. The algorithm prevents hunting by changing the flow 

setpoint more quickly (at a rate of ±2 K within a scanning period) when the 

deviation of the room temperature is diminishing than when it is increasing (at 

a rate of ±1 K within a scanning period). If the deviation of the room 

temperature is less than 0.25 K, the flow setpoint is not altered. In most 

cases, the factory setting (20 minutes) provides satisfactory results for 

residential buildings. As a general rule, the factory setting (20 minutes) leads 

to satisfactory results in residential buildings. 

Open windows or other cooling or heating loads can influence control! 

Sudden removal of these influences can lead to the value moving above or 

below the room temperature in the opposite direction for short periods! 

SP11 

SP12 

Correction to room temperature 

The measured value for the room temperature is calibrated with the help of 

this SERVice parameter. The value that was entered is added to the 

measured value for the room temperature. 

Correction to outdoor temperature 

The measured value for the outdoor temperature is calibrated with the help of 


measured value for the outdoor temperature. 

7010015003 B 27 

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Commissioning 

SP13 

SP14 

SP15 

SP16 

SP17 

SP18 

SP19 

SP20 

SP21, 22 

SP23 – SP27 

Return temperature recording 

If a return temperature sensor is to be used, this parameter must be set to 1. 

Correction to return temperature 

The measured value for the return temperature is calibrated with the help of 


measured value for the return temperature. If there are two return sensors 

(MOD3), this parameter only affects the TRF of the heating circuit. 

Proportional band 

SERVice parameter 15 specifies the proportional band (XP) of PI control for 

the flow temperature in K. 

Proportional band – 2nd control circuit (only MOD3) 

SERVice Parameter 16 specifies the proportional band (XP) of PI control for 

the second control circuit in K. 

Reset time 

SERVice parameter 17 specifies the reset time (TN) of PI control for the flow 

temperature in seconds. 

Reset time – 2nd control circuit (only MOD3) 

SERVice parameter 18 specifies the reset time (TN) of PI control for the 

second control circuit in seconds. 

Runtime for actuator of control valve 

Valves with a motorised actuator need a specified time to open or close 

completely. This is known as the valve runtime. This SERVice parameter is 

used to set the equitherm® EQJW 145 to the runtime of the valve drive that 

is used. Optimal control quality and various protective functions are only 

ensured if the valve runtime is set correctly. 

Runtime for second actuator 

Depending on the control model, a second control valve is used on the 

primary side, or a changeover valve is used on the secondary side. SERVice 

parameter SP20 is used to set the valve runtime for the second actuator. 

Minimum and maximum limits for flow temperature 

The setpoint for the flow temperature can be limited. The value of SERVice 

parameter SP21 sets the lower limit in this case, and the value of SERVice 

parameter 22 sets the upper limit. Parameters SP21 and SP22 specify a 

minimum and maximum flow temperature. 

Limiting function for the return temperature 

A limiting function can be set for the primary-side return temperature of the 

converter. If the value falls below the limiting function, the flow temperature is 

adjusted (also see SP28). The following illustration shows the limiting 

function. 

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TRF max. 

TL0 (RF) 

TL0BW (RF) 

TLU (RF) 

TA (RF) 

TA 

B10980 

Fig. 4: Limitation function 

The following parameters are available to set the limiting function: 

SP23 

SP24 

SP25 

SP26 

SP27 

Upper value of maximum limit for primary return temperature 

(T LO(RF) ) for heating. 

Lower value of maximum limit for primary return temperature 

(T LU(RF) ) for heating. 

Outdoor temperature (T A(RF) ) at which the sliding portion of 

the limiting function for the primary return temperature starts 

during heating. 

Slope (S L(RF) ) of the sliding portion of the limiting function for 

the primary return temperature for heating. 

Maximum limit (T LOBW(RF) ) for the primary return temperature 

during DHW heating. 

In MOD1 or MOD2, if the heating is in reduced or normal mode and DHW 

heating occurs at the same time, the maximum limit value for the primary 

return temperature is checked with the outdoor-temperature-dependent value 

for the heating circuit and the fixed value for the DHW during this time. 

To make the return temperature limitation effective, return temperature 

recording must be enabled (see SP13). In summer mode, or if the heating is 

in back-up mode, the limitation on the return temperature for the heating is 

not enabled. 

SP 28 

Intervention intensity if return temperature is exceeded 

If the limiting function for the return temperature, set by SP23-SP27, is 

exceeded, a PI control algorithm intervenes. For every degree above the 

limit, the algorithm reduces the setpoint for the flow temperature by the 

amount stipulated in SP28. The integral action time T N of the correcting 

algorithm is set (fixed) at 400 s. 

SP29 - SP31 

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Commissioning 

Maximum limit values for quantity metering 

SP29, SP30 and SP31 specify maximum limit values for quantity metering 

(i.e. usually for the flow or heat quantity/power). SP29 defines the maximum 

limit value for heating and DHW, SP30 only defines this value for the heating 

and SP31 only defines it for DHW. The value is always entered in units of 

'pulses per minute'. See the following examples of converting the limit value 

for the flow volume or power to the 'Pulses per minute' variable. 

Example 1: 

The flow volume should be limited to 1.6 m³ / hour. 

The flow sensor transmits a signal of 50 pulses / litre. 

The following conversion: 1.6 m³ / hour = 1,600 litres / hour and 1600 litres / 

hour = 26.67 litres / minute, and the flow sensor variable of 50 pulses / litre, 

give a limit value that must be entered on the EQJW145 (SP29, SP30 or 

SP31) of 26.67 litres / min x 50 pulses / litre = 1333 pulses / min. 

Example 2: 

The power in heating mode should be limited to 35kW. With simultaneous 

heating operation and DHW heating, 50 kW should be allowed. A heat 

quantity meter is available which outputs 1200 pulses / kWh. 

The following conversion: 35 kW = 35 kWh / h and the given variable for the 

heat quantity meter provide 35 kWh / h x 1200 pulses / kWh = 42,000 pulses 

/ h. This gives a value that must be entered on the EQJW145 of 42,000 

pulses / h = 42,000 : 60 pulses / min = 700 pulses / min. The second limit 

value is 50 kW. The same conversion: (50 kWh / h x 1200 pulses / kWh x 1h 

/ 60 min = 1000 pulses / min) gives a value of 1000 pulses / min that must be 

entered in the EQJW145. In the EQJW145, a value of 1000 should be 

assigned to SP29 and a value of 700 to SP30. 

The EQJW145 switches automatically between the following two measuring 

methods. 

• measurement of time interval (time interval measurement) between two 

pulses and calculation of the 'pulses per minute' variable 

• measurement of the number of pulses per minute (pulse measurement) . 

If the three set limit values (SP29 to SP31) are in the range 0.1 - 16.0, the 

EQJW145 automatically switches over to time interval measurement. If a 

value between 60 and 16.000 is entered for one of SERVice parameters 

SP29 to SP31, the controller switches over automatically to pulse 

measurement. 

A limit value of between 16 and 60 pulses / minute cannot be entered 

because the measurement accuracy required for control is no longer 

available in this range. If a value in the range from 60 to 16,000 has been 

entered for one of the limit values (SP29, SP30 or SP31), the other two 

limit values must be in the range from 60 to 16,000 or must be disabled 

(value of SERVice parameter = 'no'). Otherwise, there may be faulty 

30 7010015003 B 

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monitoring of the limit value leading to faulty control behaviour. During DHW 

heating at increased DHW temperature, the limiting function is not enabled 

so that protection against legionella can be enabled if required. 

SP32 

SP33 

Intervention intensity in case of violation of maximum limit value for quantity 

measurement 

The flow temperature is reduced each minute by the value that was entered 

for SP32 if the limit for quantity metering is violated. The flow temperature is 

adapted 'continuously' (i.e. about once a second) to its value in this case. If 

the value falls below the limit value for quantity measurement again, the flow 

temperature is increased again at 1/5 of the set intervention intensity. 

Limit value for minimum flow or power 

This function is used to limit see page. It prevents a constant low flow if the 

energy requirement is low. In this case, the mixer is closed and only opened 

again if a control divergence of over 5 K occurs. The value is entered in 

pulses / min. 

To convert the limit value for flow or power into a value in units of pulses / 

min, see the examples given with the explanations for SP29 to SP32. 

SP34 

Functions for DHW 

The plant structure for control model MOD1, 2 (see SP06, control models) 

can be extended by adding DHW preparation. SP34 must be set as per the 

existing DHW preparation. 

separate charge pump 

diverter valve 

one DHW sensor SP34 = 1, SP34 = 3 

two DHW sensors SP34 = 2 SP34 = 4 

Tab. 3: DHW preparation 

If the SERVice parameter has value 0, the DHW functions are not enabled 

(except with MOD3). 

SP35 

SP36 

Maximum permitted DHW temperature 

This SERVice parameter is used to impose an upper limit on the temperature 

for domestic hot water, which can be set with the lower rotary switch. If the 

rotary button used to set the values is turned further to the right (increase 

values) although the upper limit value has already been reached, the display 

will automatically show the lowest value, which is increased again. 

Switching difference DHW 

The tank charge is not started as soon as the target temperature for the 

DHW is undercut, but when the switching difference that was set here (e.g. 

5K) has been undercut. This prevents a fresh charge having to be carried out 

shortly after a charge has finished. 

SP37 

7010015003 B 31 

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Commissioning 

Maximum permitted increased DHW temperature 

This SERVice parameter is used to set an upper limit for the increased 

temperature for domestic hot water, which can be set with the lower rotary 

switch. If the rotary button used to set the values is turned further to the right 

(increase values) although the upper limit value has already been reached, 

the display will automatically show the lowest value, which is increased 

again. 

SP38 

SP39 

SP40 

Setpoint boost for charge of drinking water 

The heating temperature must be higher than the desired tank temperature 

for the domestic hot water, otherwise minor temperature losses during 

heating would mean that the tank heating never ends. This SERVice 

parameter specifies the amount by which the heating temperature should 

exceed the desired tank temperature + switching difference. 

Outdoor temperature limit value for operation of domestic hot water heating 

Depending on the outdoor temperature, the EQJW 145 determines whether 

heating of the domestic hot water tank is carried out as a priority - i.e. the 

heating medium pump is switched off during heating - or in parallel. If the 

measured outdoor temperature is below the limit value set with the help of 

SP39, parallel operation of heating and tank heating is implemented. If the 

outdoor temperature is higher than this limit value, domestic hot water 

heating is implemented with priority. If value –30°C is set for SP39, parallel 

operation is generally disabled. 

After-run time for charge pump for domestic hot water 

After the desired tank temperature has been reached, the charge pump is not 

switched off immediately. Instead, it continues running for a period that can 

be set here (in minutes). In this way, for example, a flow temperature that is 

too high for the heating circuit can be reduced. The after-run time for the 

charge pump is interrupted prematurely if TFi ≤ TWi + 2K or TFi ≤ TFs for the 

heating circuit. 

32 7010015003 B 

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SP41 

Slope of heating characteristic 

The flow temperature is controlled according to the outdoor temperature. The 

heating characteristic in the controller determines the setpoint for the flow 

temperature in relation to a given outdoor temperature. 

2,5 3,0 3,5 4,0 

2,0 

100 

[°C] 

1,8 

1,6 

SP41: SP17: Slope of of 

90 

80 

1,4 

heating characteristic 

70 

1,2 

1,0 

0,8 

60 

50 

0,6 

40 

0,4 

30 

-20 -15 -10 -5 0 5 10 15 

[°C] Outdoor temperature 

T I 

[°C] 

-10 -5 5 

Fig. 5: Guideline for the slope of the heating characteristic: 

1,4 for hot water radiator heaters ( ) 

1,0 for low-temperature heaters 

0,6 for floor heaters 

SP42 

SP43 

SP44 

Setpoint boost for a demand requirement via the device bus 

When heat from another device is requested via the device bus, SP42 can be 

used to make the EQJW145 control to a setpoint that is higher by the amount 

entered for SP42 (0K to 30K) than the amount actually requested by the 

other device. This can improve control behaviour for cascaded controllers. 

Extraneous heat portion 

Continual incidence of extraneous heat (e.g. due to the presence of people, 

loss of heat from machines) can be taken into account by the EQJW 145 and 

compensated by a horizontal shift of the heating characteristic towards a 

lower outdoor temperature. 

Heating limit 

If the outdoor temperature is higher than the heating limit, heating operation 

is stopped, i.e. the EQJW 145 goes into summer mode. As soon as the value 

falls back below the heating limit, heating operation is resumed and summer 

mode is ended again. To avoid frequent status changes, a hysteresis of 1K is 

taken into account in both cases. 

The outdoor temperature required for this function can either be measured 

with an outdoor temperature sensor or can be received via a connected 

device bus. For this function, there is a choice between the current measured 

outdoor temperature or the averaged outdoor temperature over the last 21 

hours (see SP45 on this point). 

7010015003 B 33 

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Commissioning 

SP45 

SP46 

SP47 

SP48 

SP49 

Damping for outside temperature measurement for heating limit 

The EQJW 145 can be used either for the heating limit (see SP44), for the 

currently measured outside temperature or for an attenuated outside 

temperature. If the outside temperature, averaged over the last 21 hours, is 

used, the influence of brief fluctuations – and, therefore, the frequent 

switching (on and off) of the heating system – can be avoided. If SP45 equals 

0, the current outside temperature is used. Otherwise, the value of SP45 

equals the time constant of the damping in hours. The factory setting for 

SP45 is 21 hours. 

Design temperature 

If the current outdoor temperature is lower than the design temperature, the 

EQJW 145 heating controller no longer switches to reduced mode but 

remains in normal mode instead. 

After-run factor for heating medium pump 

When heating mode ends, the heating medium pump is not switched off 

immediately, but only after a delay that can be preset with SP47. For a valve 

running time (SP19) of 120s, an after-run factor of 2 therefore means an 

after-run time of 240 s = 4 minutes for the heating pump. 

Anti-frost 

The anti-frost function becomes active if the outdoor temperature falls below 

the anti-frost limit (= +3°C). If the outdoor temperature rises above 4°C again, 

the function is terminated. The flashing symbol indicates that the anti-frost 

function is active. There is a forced switch-on of the heating medium pump. 

The setpoint for the flow temperature of the heating circuit is set at +10°C 

unless it is already higher. The DHW temperature is monitored for a minimum 

temperature of +5°C. If it falls below this value, the domestic hot water is 

heated to +10°C. In addition, regardless of the outdoor temperature, the flow 

temperature is monitored for a limit value of 5°C. If SP48=0, the function can 

be disabled and the controller will no longer offer an anti-frost function in this 

case! 

SP48 =1 enables the frost-protection function; the circulation pump (see also 

SP49) is switched off in the event of frost. 

SP48 =2 enables the frost-protection function; the circulation pump (see also 

SP49) remains switched on in the event of frost. 

Function of the configurable output 

One of the output relays of the EQJW 145 can be used for various tasks. 

SP49 specifies the use of the output. Depending on the value of SP49, the 

output has the following functions: 

• 0 = output has no function 

• 1 = Pilot timer function 

The output is controlled only in relation to the time programme that was 

entered for the relay. This enables switching of any desired consumer 

according to the time programme, independently of the heating. The relay 

34 7010015003 B 

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is opened if the normal operating mode has been set in the time 

programme. For any other operating mode, the relay is closed. 

• 2 = 2nd tank charge pump (only MOD1, 2) 

The 2nd tank charge pump is switched on if the actual value for the flow 

temperature is greater than the setpoint temperature for the DHW for start 

of heating + setpoint boost DHW (see SP38). 

The 2nd tank charge pump always runs on for the full after-run time (see 

SP40), i.e. the break off criteria for the DHW charge pump do not apply 

(see SP40). 

• 3 = Forced control of the heating medium pump to low speed 

The relay contact is closed as soon as the controller is in reduced or off 

mode. This signal can be connected up to a pump speed controller so as 

to reduce the pump speed in reduced or off mode. 

• 4 = Collective alarm output 

If a fault is present (error symbol is visible on the display), the relay is 

switched on. The fault may also have occurred on another controller and 

have been forwarded via the device bus (also see section 3.4 and 

section 5) 

• 5 = Circulating pump 

If the lower rotary switch is set to , the circulating pump is controlled 

according to the switching commands entered for the relay. In switch 

positions or it is on regardless of the switch commands. During 

normal DHW heating, the circulating pump is switched off. During DHW 

heating with increased DHW temperature, the circulating pump stays 

switched on. Once the DHW preparation is switched off (position ), the 

circulating pump is also switched off. The output is included in the antifrost 

and pump anti-jamming functions. 

• 6 = heat requirement 

The relay output is switched when heat is demanded by the system 

controlled by the EQJW 145 or when heat is demanded via the device bus. 

This function can be used to control a central heating pump. 

The weekly switching programme for the configurable output (see Section 

4.9) works only if the output has been configured as a pilot timer or for 

activating a circulating pump. The weekly switching programme can be 

viewed and edited regardless of how the output is configured. 

SP50 

SP51, SP52 

Pump anti-jamming facility 

If pumps have not been activated during the last 24 hours, they are switched 

on briefly at noon. This reliably prevents them from jamming. 

Summer/winter or winter/summer time changeover 

Thanks to the calendar time switch integrated into the equitherm® 

EQJW 145, the winter/summer time changeover and the summer/winter time 

changeover are carried out automatically. The date for the changeovers is 

specified by the values for SERVice parameters SP51 and SP52. A value of 

16.02 corresponds to 16 February. If the date entered is a Sunday, the 

changeover takes place on the same day. Otherwise, the changeover is 

7010015003 B 35 

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Commissioning 

performed on the following Sunday. For the summer/winter time changeover, 

the time is put back from 03:00 hours to 02:00 hours. The winter/summer 

time changeover takes place at 02:00 hours. The time is put forward to 3:00 

hours. If SERVice parameters SP51 and SP52 have the same values, no 

summer/winter time changeover is performed. 

SP53 

Optimisation 

When the optimisation function (SP53 = 1) is enabled, it has the effect that 

the selected room temperature is actually reached in normal mode at the 

point in time that was set in the switching programme. The usage times 

should therefore be set as they are actually needed. You should not set the 

programme so that the controller has additional time to warm up – which 

would, of course, make sense without the optimisation function. Optimisation 

provides energy-optimised control by largely preventing unnecessarily high 

room temperatures outside of the usage times. 

The function can be used only in conjunction with a room-temperature 

sensor. SP08 (room-temperature measurement) must be switched on, i.e. 

have a value of either 1 or 2. The optimisation function moves the start of 

heating to an earlier time, based on the current value for the room 

temperature and the characteristic of both the building and the heating 

system that was ascertained by the controller. The start of heating is moved 

to the latest possible time in order to attain the desired temperature at the 

time set in the switching programme. The start takes place a maximum of 8 

hours before the relevant switching time. During the heating operation, the 

maximum permissible flow temperature (SP22) is used. In so doing, the flow 

temperature is raised not suddenly, but gradually. 

Furthermore, the switch-off time for normal mode is also moved to an earlier 

time (up to 1 hour earlier) if this is possible without significantly undercutting 

the desired room temperature by the end of the normal mode as per the 

switching programme. 

In reduced mode, the room's target temperature is monitored and – if 

undercut – a (brief) warm-up with maximum permissible flow temperature is 

carried out until the target temperature has been exceeded by 1 K. There is 

no long-term flow-temperature control as per the heating characteristic. 

When the optimisation function is on, it is indicated by either the sun or the 

moon symbol flashing. 

So as not to interrupt the heating operation, the controller carries out a oneoff 

charge before the room heating starts – provided water heating is required 

according to the switching programme. 

The optimisation function always affects the change between reduced mode 

and normal mode, or the change between off and normal modes. No 

optimisation takes place when changing between off and reduced modes. 

36 7010015003 B 

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The controller needs a few warm-up operations (i.e. normally a few days) 

until it has determined the building's characteristic. Only then has a 

practically optimum temperature profile been attained. This could be impaired 

by outside influences (open windows, sources of heat etc.). 

When the optimisation function is switched off (SP53 = 0), the heating is also 

switched off initially on changing from normal to reduced mode if the room 

temperature is at least 2.5 K higher than the setpoint for reduced mode. Not 

until the room temperature has fallen back to the setpoint does the heating 

mode start again in accordance with the heating characteristic. If, due to 

extraneous heat, the room temperature again rises by more than 2.5 K above 

the setpoint, the heating switches off again. 

SP54 

SP60 

Temporary heating mode 

Parameter SP54 sets the method of working when heating and hot water are 

operating in parallel. When SP54 = 0 (temporary heating mode inactive), the 

hot-water circuit keeps its priority and heating mode is suppressed while the 

tank is charged until the hot water has been heated to the setpoint. 

When SP54 = 1 (temporary heating mode active), the charging of the tank 

with hot water is, after 20 minutes, interrupted for 10 minutes and the heating 

control system is activated. There is then a charge of hot water. 

Floor drying 

The EQJW 145 has two floor-drying functions: 

1. Functional heating in accordance with EN 1264 Part 4. This describes 

how cement floors must be treated before floor coverings are laid. 

Firstly, a flow temperature of 25°C must be maintained over 3 days for 

this purpose. After this, the maximum flow temperature should be 

maintained for 4 more days (i.e. a total of 7 days = 7 d). The controller 

then works in normal heating mode in accordance with the settings 

chosen. 

2. Ready-for-laying heating 

This involves starting with a flow-temperature setpoint of 25°C. The 

flow-temperature setpoint is gradually increased by 5K a day until the 

maximum flow temperature has been attained. The maximum flow 

temperature is then maintained for 7 days, after which the flowtemperature 

setpoint is gradually reduced by 5K every day until a 

temperature of 25°C has been reached. The function is then finished 

and control is again effected in normal heating mode in accordance 

with the chosen settings. 

You can call both of these functions up with the help of SERVice 

parameter SP60. To perform functional heating in accordance with EN 

1264 Part 4, a value of 7d must be assigned to the parameter. To 

perform ready-for-laying heating, the parameter should have a value 

of 25°C assigned to it. 

The EQJW 145 should be adapted to the installation before floor drying is 

enabled. Parameter SP22 (maximum flow temperature) in particular should 

first be set to an appropriate value for the floor and the heating circuit. 

7010015003 B 37 

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Commissioning 

When the floor drying function is active, the flashing 'house' symbol is 

displayed. An additional value appears in the display. 

If functional heating is activated, the remaining time is shown, e.g. 7d = 7 

days (at the start), counting down to 1d = 1 day. 

If ready-for-laying heating is activated, the current phase appears: 

• 1 = Initialisation 

• 2 = Rising-temperature phase 

• 3 = Temperature-maintenance phase, 

• 4 = Falling-temperature phase 

Once the floor drying has been successfully completed, the numerical value 

of 9 appears. If the floor drying function was disrupted (due to a sensor 

failure or a long-lasting high control offset etc.), value 8 is shown instead of 9 

to signal the fault. In the case of functional heating in accordance with EN 

1264 Part 4, control offset of more than 3K for more than 10 minutes is 

considered to be too high. In the case of ready-for-laying heating, offset of 

more than 5K for more than 30 minutes are considered to be excessive. 

Values 8 and 9 can only be read. They cannot be assigned to the SERVice 

parameter. 

After floor drying has been completed, the EQJW 145 operates according to 

the switch setting and the switching commands. Floor drying can be aborted 

by setting parameter SP60 to 0. If the power supply fails, floor drying ceases. 

When power is restored, the drying procedure restarts automatically. 

SP61 

Sensor type 

Parameter SP61 sets the type of connected temperature sensor. Available 

options are Ni1000 (SP61 =0) and Pt1000 (SP61 = 1). 

3.4 Communication level 

In the communication level, a specialist can enable and configure the 

communication functions of the EQJW 145. 

CAUTION! 


It can cause major faults or damage to the installation. 

The communication level must only be enabled by a specialist. 

38 7010015003 B 

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3.4.1 Access to communication level 

1. Set top rotary switch to Service position. 


3. Select 'CO' (Communication). 



6. Show the code. 

3.4.2 Viewing the communication parameters 


• The first communication parameter is 

shown. 

BAUD 


2. Select the communication parameter you want. 


• The value for the parameter is shown. 

4. To leave the value unchanged, 

press ESC to exit from the display. 

3.4.3 Changing communication parameters 

Push the ESC key to cancel the procedure. The value will not be accepted 

unless it has already been confirmed. 


2. Select the communication parameter you want. 

BAUD 

3. Push the input button. 


BAUD 





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Commissioning 

3.4.4 List of communication parameters 

Parameter Description Range Stepvalue 

CP01 Internal serial number of EQJW 145 (read only) – 

CP02 2 Type of communication 

• 0 = no communication 

• 1 = device bus 

• 2 = MOD bus via RS485 

• 3 = MOD bus via modem 

• 4 = SMS via modem 

• 5 = MOD Bus and SMS via Modem 

0…5 1 

CP03 19200 Baud rate 9600, 19200 – 

CP04 – Device bus: address EQJW 145 1…32, auto 1 

CP05 – MOD bus via RS485: address EQJW 145 1…247 1 

CP06 – MOD bus via modem: phone number of the control station – 1 

CP07 – SMS via modem: telephone number of the provider (TAP protocol) – 1 

CP08 – SMS via modem: telephone number of the mobile phone – 1 

CP09 0 Device bus: time synchronisation 


CP10 0 Device bus: send outdoor temperature 


CP11 0 Device bus: receive outdoor temperature 


CP12 0 Device bus: send heat requirement (TF) 


CP13 0 Device bus: receive heat requirement (TF) 


CP14 0 Device bus: send return temperature 


CP15 0 • Device bus: receive return temperature 

0 = not enabled. 1 = enabled 

CP16 0 Device bus: send error 


CP17 0 • Device bus: receive error 

0 = not enabled. 1 = enabled 

CP18 0 Device bus: EDB 100 digital room operating unit 

• 0 = EDB 100 not connected, 

• 1 = EDB 100 connected 

0…1 1 

0…1 1 

0…1 1 

0…1 1 

0…1 1 

0…1 1 

0…1 1 

0…1 1 

0…1 1 

0…1 1 

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Parameter Description Range Stepvalue 

CP19 – Device bus: address of EDB 100 digital room operating unit auto, 2…32 1 

CP20 0 SMS or MOD bus via modem: automatic configuration of modem 


0…1 1 

CP21 5 SMS or MOD BUS via modem: dialling pause in minutes 0...255 1 

CP22 5 SMS or MOD BUS via modem: timeout in minutes 1…255 1 

CP23 5 SMS or MOD bus via modem: number of dialling attempts 1…255 1 

CP24 0 SMS or MOD bus via modem: send message even if error is rectified 


CP25 0 SMS via modem: select language for error message 

• 0 = German. 

• 1 = French. 

• 2 = English. 

• 3 = Italian. 

• 4 = Spanish 

CP26 0 MOD bus via modem: disable dialling control station in case of fault 


CP27 0 MOD bus via RS485 or MOD bus via modem: control station commands 

expire after control station is inactive for 30 minutes 


Tab. 4: Communication parameters 

0…1 1 

0…4 1 

0…1 1 

0…1 1 

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Commissioning 

3.4.5 Explanations of individual communication parameters 

CP01 

CP02 

CP03 

CP04 

CP05 

CP06 

CP07 

CP08 

Serial number 

The serial number of the EQJW 145 is shown. 

Type of communication 

The type of communication can be set. You can choose from these options: 

• 0 = no communication 

• 1 = device bus 

• 2 = MOD bus via RS485 

• 3 = MOD bus via modem 

• 4 = SMS via modem 

• 5 = MOD bus and SMS via modem 

Baud rate (BAUD) 

Transmission speed between the BMS and the controller or (for modem 

operation) transmission speed between controller and modem. Must match 

the Baud rate for the BMS. 

Device bus address 

This is used for the unique identification of the controller within the device 

bus. Each address must only be assigned once, and a device in the 

controller grouping must have address 1. 

Modbus address 

This address is used to identify the controller for RS485 or modem operation. 

Each address must occur only once within a system. 

Modbus via modem: phone number of the control station 

The telephone number of the BMS modem must be entered here, including 

the dialling code or (for example) a 0 for extension systems. Short pauses 

between the digits can be entered with P (= 1 second), and the end of the 

number is identified by '–'. The phone number can comprise a maximum of 

22 digits (including pauses). 

SMS via modem: telephone number of the provider 

The telephone number for the provider's SMS forwarding service must be 

entered here, including the dialling code or (for example) a 0 for extension 

systems. Short pauses between the digits can be entered with P (= 1 

second), and the end of the number ifs identified by '–'. The phone number 

can comprise a maximum of 22 digits (including pauses). When selecting the 

provider, make sure that TAP (Telocator Alphanumeric Protocol) is used. 

SMS via modem: telephone number of the mobile phone 

The telephone number of the mobile phone must be entered here, including 

the complete dialling code (e.g. 00 41 ...). The phone number can comprise a 

maximum of 22 digits. 

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CP09 

Device bus: time synchronisation 

If CP 09 is set to 1, this controller sends time information on the device bus 

every 24 hours. All devices with CP 09 set to 0 will evaluate this information 

and set their clocks accordingly. Within a controller grouping, this function 

should only be active on one controller, whose time will then be set on each 

of the other controllers. 

Regardless of CP09, the time for all controllers is corrected as soon as the 

time is changed on one of the devices that are connected to each other via 

device bus. 

CP10 

CP11 

CP12 

CP13 

CP14 

CP15 

CP16 

CP17 

Device bus: send outdoor temperature 

If CP 10 is set to 1, this controller sends the current outdoor temperature on 

the device bus. 

Device bus: receive outdoor temperature 

If CP 11 is set to 1, the controller receives the outdoor temperature 

information from the device bus and uses it instead of a measured value of 

its own. 

Device bus: send heat requirement 

If CP 12 is set to 1, this controller sends its current flow temperature (TF) 

setpoint on the device bus. 

Device bus: receive heat requirement 

If CP 13 is set to 1, the controller receives flow temperature requirement 

requests from the device bus. The controller makes a maximum selection 

between the flow temperature requirement requests of all the controllers 

connected on the device bus and its own setpoint for the flow temperature, 

and regulates the final control element to this temperature. 

Device bus: send return temperature 

If CP 14 is set to 1, this controller sends its current return temperature ((TRF) 

measured value) to the device bus. 

Device bus: receive return temperature 

If CP 15 is set to 1, the controller receives the return temperature value from 

the device bus and uses it instead of its own measured value. 

Device bus: send error 

If CP 16 is set to 1, the controller sends its current error status on the device 

bus in the event of an error. 

Device bus: receive error 

If CP 17 is set to 1, the controller receives fault messages from other 

devices. If configured to do so, these devices can then issue a fault message 

(see also SP49: Collective alarm output). 

CP18 

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Commissioning 

Device bus: EDB 100 digital room operating unit 

If an EDB100 digital room operating unit is to be used, CP18 must be set to 

1. 

If an EDB 100 digital room operating unit is used, the actual value for the 

room temperature is evaluated by the EDB 100. The measured values of 

other room operating units or room sensors (see SP08) are ignored. 

CP19 

CP20 

CP21 

CP22 

CP23 

CP24 

CP25 

CP26 

Device bus: EDB 100 digital room operating unit 

The address of the EDB 100 room operating unit assigned to the controller 

must be set at CP19. 

SMS or Modbus via modem: automatic configuration 

If the type of communication (selected with parameter CP02) specifies that a 

modem is used, parameter CP20 is automatically assigned a value of 1. 

Otherwise, CP20 has a value of 0 as the factory setting. If parameter CP20 

has value 1, the connected modem is configured automatically. 

SMS or Modbus via modem: modem dialling pause 

Time between two dialling attempts. A pause of several minutes must be 

observed between calls so that the telecoms network is not continuously 

under pressure. 

SMS or Modbus via modem: modem timeout 

In case of a connection via modem, the connection is terminated by the 

controller if no data exchange has taken place after this time has elapsed. 

SMS or Modbus via modem: number of dialling attempts 

The dialling attempts via modem to the provider or the control station are 

repeated, observing the dialling pause (CP21), if the line is busy or if it is 

impossible to make a connection for any other reason. When the number of 

dialling attempts set at CP 23 is reached, however, no further attempts are 

made at first and the modem status is shown as 'OFF'. The dialling attempts 

counter is automatically reset at 12:00 hours and then the dialling attempts to 

the BMS are made again. 

SMS or Modbus via modem: send message even if error is rectified 

If CP24 is set to 1, dialling will also take place if the fault has been rectified 

and the controller is operating without faults again. 

SMS via modem: language for error messages 

This parameter is used to select the language that is used to send an SMS. 

The numbers have the following meanings: 0 = German. 1 = French. 

2 = English. 3 = Italian. 4 = Spanish 

Modbus via modem: disable fault dialling 

If CP26 is set to 1, there are no dialling attempts via modem to the BMS if a 

fault occurs. 

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CP27 

Modbus via RS485 or Modbus via modem: control station commands expire 

after the control station has been inactive for 30 minutes 

When CP27 = 1: if the controller is no longer receiving any Modbus enquiries, 

operating statuses specified via Modbus become invalid after 30 minutes and 

the controller operates independently of the control station again. If 

CP27 = 0, the operating statuses continue to have unlimited validity even 

beyond these 30 minutes. 

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Operation 

4 Operation 

4.1 Operating modes 

The top rotary switch is used to set the heating circuit. The five left-hand 

positions of the top rotary switch (see 2.1 ) enable you to select one of the 

following modes: 

Manual mode – outputs for pump and valve can be controlled manually 1 ) 

Back-up mode – heating is switched off, anti-frost monitoring is active unless 

parameterised otherwise (see 2.1) 

Reduced mode – reduced room temperature (night temperature) 

Normal mode 2 – normal room temperature (day temperature) 

Automatic mode– controller changes the mode automatically, according to 

the weekly and calendar programmes that have been set. Automatic mode 

should be selected in normal cases. 

The positions of the top rotary switch on the right-hand side allow you to 

change the device settings. In these positions, the controller operates in 

automatic mode. 

• Setpoint adjustment - normal mode (day) 

• Setpoint adjustment - reduced mode (night) 

• Enter switching programme for heating 

• Limited temperature change 

• Commissioning level, service level and communication parameters 

contains all the other parameters (heating characteristic, control 

parameters, communication settings, etc.). 

The bottom rotary switch allows you to set hot water preparation and the pilot 

timer. The five left-hand positions of the bottom rotary switch (see 2.1) enable 

you to select one of the following modes: 

Manual mode – outputs for pump and valve can be controlled manually 3 ) 

Off mode – hot water preparation switched off, anti-frost monitoring is active 

unless parameterised otherwise (see 2.1). 

Continuous heating to normal DHW temperature – tank is permanently kept 

at normal DHW temperature 

1 

This is mainly needed for commissioning or in case of faults on the installation. 

2 

Normal mode corresponds to nominal mode as per EN12098-1. 

3 

This is mainly needed for commissioning or in case of faults on the installation. 

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Continuous heating to increased DHW temperature – tank is kept at 

increased DHW temperature 

Automatic mode – hot water preparation automatically changes the mode 

according to the weekly programme that has been set. Automatic mode 

should be selected in normal cases. 

The right-hand positions of the bottom rotary switch allow you to change the 

device settings. In these positions, the controller operates in automatic mode. 

• Setpoint adjustment for increased DHW temperature 

• Setpoint adjustment for normal DHW temperature 

• Enter weekly switching programme for domestic hot water 

• Enter switching programme for configurable output (output terminal 8) 

• One-off domestic hot water heating. 

4.1.1 Displays when automatic mode is set 

To show the various displays described below, the bottom rotary switch must 

be moved to one of the following positions (see section 4.1). 

Off mode 




1. After you select the position for the top rotary 

switch, the current time appears. The current 

operating status (here: sun for normal mode = 

daytime operation) and the current status of 

the outputs are shown on the lower margin of 

the display (not illustrated here, see section 

2.5) 

2. Turn the input button clockwise to show the 

date. The numbers of the month/day and year 

alternate continuously in the display. 

3. Turn the button clockwise again to see the 

room setpoint temperature (only if a room 

sensor is present), 

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Operation 

4. The current actual value for the room 

temperature (only if a room sensor is present). 

• The flow setpoint (not available in OFF 

mode or summer mode, for example). 

• The current actual value for the flow 

temperature. 

• The outdoor temperature that is currently 

measured. 

• Then you will see the DHW setpoint 

(if DHW preparation has been configured), 

• The current measured DHW temperature 

(if DHW preparation has been configured). 

5. Turn the button further in a clockwise direction 

to display the time again. 

You can also turn the Button in the opposite direction to scroll backwards 

through the displays. In some cases, more displays can be added to the 

display loop, e.g. 

Show setpoint and actual value for return temperature 

The display (see 7), can be added in case of a fault A display of the 

connection status can be added for modem operation (see 6.4) 

Press the ESC button once to go directly to the time display. 

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4.1.2 Displays when back-up mode, reduced mode and normal mode are set 

To show the various displays described below, the bottom rotary switch must 

be moved to one of the following positions (see 4.1). 

Off mode 




1. After you select the switch position for the top 

rotary switch, the current time is shown. The 

current operating status (here: sun for normal 

mode = daytime operation) and the current 

status of the outputs are shown on the lower 

margin of the display (not illustrated here, see 

2.5) 

2. Turn the input Button further clockwise to show 

the room setpoint temperature (only if a room 

sensor is present) 

• Then the current actual value for the room 

temperature (only if a room sensor is 

present). 

• The flow setpoint (not available in OFF 

mode or summer mode, for example). 

• The current actual value for the flow 

temperature. 

• The outdoor temperature that is currently 

measured. 

3. Then you see the DHW setpoint 

(if DHW preparation was configured). 

• The current measured DHW temperature 

(if DHW preparation was configured). 

4. Turn the button further in a clockwise direction 

to display the time again. 

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Operation 

You can also turn the button in the opposite direction to scroll backwards 

through the displays. In some cases, more displays can be added to the 

display loop, e.g. 

Show setpoint and actual value for return temperature 

The display (see 7), can be added in case of a fault A display of the 

connection status can be added for modem operation (see 6.4) 

Press the ESC button once to go directly to the time display. 

4.2 Entering the setpoint temperature in normal mode 

To enter setpoints, the bottom rotary switch must be moved to one of the 

following positions (see 4.1). 

Off mode 




1. After you select the position for the upper 

rotary switch, the current room setpoint 

temperature for nominal mode is shown. 

• Push the input button and the numerical 

value will flash... 

• ... and you can now change it by turning it 

upwards or downwards (step value: 

0.1°C). 

2. Push the input button again to confirm the 

changed numerical value. 

Press the ESC button once before confirming to cancel the input. The old 

value is retained. 

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4.3 Enter setpoint temperature in reduced mode 

To enter setpoints, the bottom rotary switch must be moved to one of the 

following positions (see 4.1). 

Off mode 




1. After you select the switch position for the top 

rotary switch, the current room setpoint 

temperature for reduced mode is shown. 

• Push the input button and the numerical 

value will flash... 

• ... and you can now change it by turning it 

upwards or downwards (step value: 

0.1°C). 





4.4 Weekly switching programme for heating 

The weekly switching programme repeats itself every week. It comprises a 

maximum of 48 switching commands (6 for each day and another 6 for the 

whole week) with the associated operating modes which can be entered in a 

10-minute grid. The switching commands can be modified individually and 

they are captive. A switching command may be valid every day (1-7) or on a 

specified day of the week (Mon=1, Tue=2, etc.). If a switching command is 

present on a certain day of the week (Mon, Tue, etc) the daily switching 

command (1-7) is not valid on that day. An 'empty' switching programme is 

interpreted as a switching programme in normal mode. 

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Operation 

The factory setting for the weekly programme is: 

Day Time Mode 

Daily 06:00 Normal mode 

Daily 22:00 Reduced mode 

You are recommended to note any change to the weekly switching 

programme in the relevant table in Section 14. Before you can call up, view 

or edit the weekly switching programme, you must check whether the bottom 

rotary switch is in one of these positions (see 4.1). 

Off mode 




4.4.1 Calling up the weekly switching programme 

1. Set the rotary switch to PROG 


• The weekly programme is selected. 

4.4.2 View switching commands 


4. Select the day of the week (1=Monday, 2= 

Tuesday, 1 - 7 =daily). 

5 = Friday has been selected here. 


• The first switching command for this day 

(or for the whole week) is shown. 

Turn the input button. 

• The individual switching commands are 

shown. An empty switching command is 

shown as '_ _ _ _'. 

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4.4.3 Enter a switching command 

1. Turn the input button until you reach the next 

empty switching command. 


• The new switching command is shown. 


• The time for the switching command is 

changed. 



confirmed. 


6. Select the mode for the switching command. 


• The mode is confirmed. 

4.4.4 Changing and deleting a switching command 

Show the switching command as described in the Section on 'View switching 

commands', 

e.g.: 


• The switching command is called up. 


3. Choose whether you want to delete the 

switching command (Clr) or change it (SEt). 


• Your selection is confirmed. 

• If the switching command was deleted, the 

next switching command is shown. 

5. For a change, the rest of the procedure is as 

described in the Section on 'Enter a switching 

command'. 

... etc. 

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Operation 

4.5 Calendar switching programme 

4.5.1 Calling up the calendar switching programme 

The calendar programme can influence the automatic mode of the heating 

circuit over longer periods, in addition to the weekly programme. The 

calendar switching programme specifies date periods (e.g. for holidays) when 

the weekly switching programme is only enabled up to a defined mode. A 

maximum of 20 switching commands (10 periods) comprising the date and 

mode are available for this purpose. These can be entered in the day grid. An 

'empty' switching programme is interpreted as a switching programme in 

normal mode. The switching commands are captive. You are recommended 

to note any change to the calendar switching programme in the relevant table 

in section 15.4. No commands are entered in the calendar switching 

programme in the factory setting. The calendar switching programme does 

not influence the switching programme for domestic hot water preparation or 

the switching programme for the configurable output. 

Before you can call up, view or edit the calendar switching programme, the 

bottom rotary switch must be moved to one of these positions (see 4.1). 

Off mode 


Heating to increased DHW temperature 


Procedure 

1. Set the top rotary switch to PROG. 

2. Turn the input button to go to the calendar 

programme. 


• This selects the calendar programme. 

• You see '_ _ _ _' or the first switching 

command if one is present. 


Turn the input button. 

• The individual switching commands are 

shown, if any are present. 

• An empty switching command is shown as 

'_ _ _ _'. 

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• The date for the switching command is 

changed. 


• The date for the switching command is 

confirmed. 






Show the switching command as described in the Section on 'View switching 

commands', e.g.: 


• The switching command is called up. 


3. Choose whether you want to delete the 

switching command (Clr) or change it (SEt). 



If the switching command was deleted, the 

next switching command is shown, or 

shown as '_ _ _ _' if there are no more 

switching commands. 

For a change (SEt), the rest of the procedure is as described in the Section 

on 'Enter a switching command. 

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Operation 

4.6 Temporary temperature change for the heating circuit 

Before a temporary temperature change for the heating circuit can be 

implemented, ensure that the bottom rotary switch is in one of these positions 

(see 4.1). 

Off mode 


Heating to increased DHW temperature 


Procedure 

1. Set the top rotary switch to the party symbol. 

2. Turn the input button. set the duration for the 

temperature change (h= hours, d=days, t= until 

the next switching command, minimum 2 h) 


• The duration is confirmed. 


5. Select the mode ( , or ). 


7. Confirm the mode. 

Use the ESC button or set the top rotary switch to another position to cancel 

the temporary temperature change function. 

As the time elapses, the remaining time is shown in days, hours or minutes. 

After the limited temperature change, the heating circuit is controlled as per 

automatic mode again. 

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4.7 Entering DHW temperatures 

To enter DHW temperatures, ensure that the top rotary switch is in one of 

these positions (see 4.1). 

Back-up mode 

Reduced mode 

Normal mode 


Procedure 

1 x 

1. Set the bottom rotary switch to the 'Adjust 

setpoint for normal DHW temperature' position. 

• The current setpoint temperature is shown. 

2. Push the input button and the numerical value 

will flash. 

3. ... and you can now change it by turning it 

upwards or downwards (step value: 0.1°C). 





If the 'Adjust setpoint for boosted DHW 

temperature' (thermal disinfection) switch 

position is selected, this setpoint temperature 

can be set in the same way. 

1 x 

If you turn the input button without pushing it 

first (before or after entering data), the current 

temperature in the tank is shown. 

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Operation 

4.7.1 Notes on the boosted DHW temperature 

The boosted DHW temperature is intended for thermal disinfection of hot 

water preparation. The higher temperature should destroy germs (legionella). 

To achieve this aim reliably, the return temperature limitation (see SP27) and 

power/flow limitation (see SP29ff) functions are not enabled with an 

increased DHW temperature. 

If a circulating pump (see SP49) is present, it is switched on during the 

thermal disinfection. 

4.8 Weekly switching programme for domestic hot water 

The weekly switching programme repeats itself every week. It comprises a 

maximum of 48 switching commands (6 for each day and another 6 for the 

whole week) with the associated operating modes which can be entered in a 

10-minute grid. The switching commands can be modified individually and 

they are captive. A switching command may be valid every day (1-7) or on a 

specified day of the week (Mon=1, Tue=2, etc.). If a switching command is 

present on a certain day of the week (Mon, Tue, etc) the daily switching 

command (1-7) is not valid on that day. An 'empty' switching programme is 

interpreted as a switching programme in normal mode. 

There are three possible statuses for domestic hot water preparation: 

Function 

No domestic hot water 

preparation 

Normal DHW temperature 

Symbol 

STOP 

START 

Boosted DHW temperature 

START 

Tab. 5: statuses for domestic hot water 

The factory setting for the weekly programme is: 

Day Time Mode 

Daily 00:00 Normal DHW temperature 

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This means that the controller is set to normal hot water mode every night. 

This switching command may only be deleted if it is replaced by other 

switching commands 4 . You are recommended to note any change to the 

weekly switching programme in the relevant table in section 15. 

Before you can call up or edit the weekly switching programme, you must 

ensure that the top rotary switch is in one of these positions (see 4.1). 

Back-up mode 

Reduced mode 

Normal mode 


4.8.1 Calling up the weekly switching programme 

1. Set the bottom rotary switch to PROG 


1 x 


3. Select the day of the week (1=Monday, 2= 

Tuesday, 1 - 7 =daily). 

6 = Saturday has been selected here. 


• The first switching command for this day 

(or for the whole week) is shown. 

Turn the input button. The individual switching 

commands are shown. An empty switching 

command is shown as '_ _ _ _'. 

[Stop]. 

4 

If all the switching commands are deleted, the controller operates continuously with 

the increased DHW temperature and the associated special features. 

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Operation 








changed. 



confirmed. 






Show the switching command as described in the section on 'View switching 

commands', 

e.g.: 


• the switching command is called up 


3. choose whether you want to delete the 

switching command (Clr) or change it (SEt) 



If the switching command was deleted, the 

next switching command is shown. 

5. For a change, the rest of the procedure is as 

described in the Section on 'Enter a switching 

command'. 

... etc. 

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4.9 Weekly switching programme for pilot timer/circulating pump 

The weekly switching programme is repeated every week. It comprises up to 

48 switching commands (six for each day and a further six for the whole 

week) with the associated operating modes, which can be entered in a 10- 

minute raster. The switching commands can be amended individually and are 

captive. One switching command can be valid either daily (1-7) or on a 

certain day of the week (Mon=1, Tue=2 etc.). If there is a switching command 

on a certain day of the week (Mon, Tue etc.), then the daily switching 

command (1-7) does not apply on that particular day. An 'empty' switching 

programme is interpreted as a switching programme with the normal 

operating mode. 

The factory setting for the weekly switching programme is as follows:- 

Day Time Mode 

Daily 06:00 Normal mode 

Daily 22:00 Reduced mode 

It is advisable to record any changes made to the weekly switching 

programmes in the relevant table in the section entitled 'Overview of 

controller settings'. 

Before the weekly switching programme can be called up, viewed or edited, 

the user should carefully check that the upper rotary switch is in one of the 

following positions (see 'Operating modes'): 

Back-up mode 

Reduced mode 

Normal mode 


The weekly switching programme works only if the relevant output has been 

configured as a pilot timer or for activating a circulating pump (see SP 49). 

The weekly switching programme can be viewed and edited regardless of 

how the output is configured. 

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Operation 

4.10 Calling up the weekly switching programme 

1 x 

1. Set the bottom rotary switch to PROG 

. 

2. Turn button. 

3. Select day of the week (1=Monday, 2= 

Tuesday, 1 - 7 daily). 

In this example, 5 = Friday was chosen. 

4. Press button. 

• The first switching command for that day 

(or the whole week) is shown. 

4.10.1 View switching command 

Turn button. 

• Each switching command is shown. 

• An empty switching command is indicated 

by '_ _ _ _'. 

4.10.2 Enter switching command 

1. Turn button to the next empty switching 

command 


• New switching command is shown. 


• Time for the switching command changes. 


• Time for the switching command is 

confirmed. 


6. Select operating mode for the switching 

command. 


• Operating mode is confirmed. 

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4.10.3 Change/delete switching command 

As described in 'View switching command', proceed as follows: 

e.g.: 


• Switching command is called up. 


3. Choose whether you want to delete (Clr) or 

change (SEt) the switching command. 


• Selection is confirmed. 

5. If the switching command was deleted, 

• The next switching command is shown. 

4.11 Once-only tank charge 

6. If you wish to change the command, proceed 

as described in 'Enter switching command'. 

... etc. 

To carry out a once-only tank charge, the top rotary switch must be in one of 

these positions (see 4.1). 

Back-up mode 

Reduced mode 

Normal mode 


Procedure 

1 x 

This position of the bottom rotary switch allows 

you to initiate tank heating immediately. This 

can happen if the domestic hot water (DHW) 

preparation is currently switched off (by 

switching commands), or if the tank 

temperature has not dropped far enough for 

regular tank heating to begin. 

You must press the input button to initiate tank 

heating, which ends automatically after 

reaching the tank setpoint temperature. 

After completing a once-only tank charge, the last mode set for DHW control 

is valid again. 

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Manual mode 

5 Manual mode 

In manual mode, the system can be controlled by hand during installation or 

in case of an incident. There is no control in manual mode. The output relays 

are opened or closed. The valve is opened or closed according to the 

specified values. Before you can work in manual mode, this mode must be 

enabled in SERVice mode (see 5.1). 

By selecting the switch position for one of the two rotary switches, the mixer 

first retains its current position and the heating medium pump is switched on. 

The current statuses for the controller outputs (pump on, final control element 

open, final control element closed etc.) are shown on the lower edge of the 

display (as also happens in other cases - see 2). 

5.1 Access to manual mode (heating) 

1 

2 

Set the upper rotary switch to manual mode. 

5.2 Access to manual mode (domestic hot water, configurable output and second final 

control element) 

Set the lower rotary switch to manual mode 

1 x 

If a second final control element was configured, the display shows 

start with. 

to 

If both rotary switches are set to the manual position at the same time, all the 

outputs are then available for selection. Otherwise, only the outputs 

belonging to the respective switch are available. Outputs that are not used in 

the current controller configuration are not offered for manual mode. 

5.3 Set valve position 

1. Press the input button at POS 1 (or POS2 for 

the 2nd final control element). 

I.e. select the 'final control element opening' 

menu sub-item. 


• Value for final control element opening in 

per cent. 


• Confirm the value. 

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5.4 Set status of other outputs (pumps, configurable output) for manual mode 


2. Select the output you want. (UP 1 = heating 

pump, LP = charge pump, rEL = configurable 

output). 


4. Select the menu sub-item. 

5. Turn the input button 

6. Specify pump output (0= pump off, 1=pump 

on) 


• The preset is accepted. 

5.5 Exit manual mode 

You exit manual mode as soon as you turn the rotary switch to another 

position. 

5.6 Check measured values in manual mode 

1. Turn the input button until the 

• "INFO" sub-item in the Display menu is 

shown 

2. Press the input button 

3. Select menu sub-item "INFO" 

... 

4. Turn the input button 

• The individual values are shown. 

• The display loop corresponds to the 

'automatic mode' switch setting. 

5. Press the "ESC" key 

6. Exit from menu sub-item "INFO". 

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Communication functions 

6 Communication functions 

6.1 Bus wiring 

6.2 Device bus 

6.2.1 Assigning addresses 

The EQJW 145 has a communication interface which can be used for the 

device bus, or alternatively for Modbus communication – also via modem. 

Fault messages can still be sent by modem to a mobile phone as SMS 

messages. 

The rules for RS-485 bus systems must be followed when setting up 

communication networks. The following points must be noted in particular: 

• Maximum length of one bus segment: 1,200 m 

• Maximum number of devices: 32 

• A final resistance (120 Ohm) must be provided at the end of the line 

• Use twisted pair screened cable 

• Stub cables in excess of 3 m in length are not allowed 

• Screens must be applied flat on both sides, according to the rules of 

engineering, and must be connected to earth with low resistance 

• External lightning and surge voltage precautions must be provided if 

cables are laid beyond the boundaries of the building 

• It is not necessary to keep to a specific polarity (cores A/B) with the EQJW 

145. 

The device bus makes it possible to interconnect as many as 32 devices with 

little outlay. It is primarily used to transmit measured temperature values 

(outdoor temperature and room temperature) and commands (mode 

changeover). Connecting the devices only requires two wires which are 

attached to the terminals regardless of polarity – to terminals 18 and 19 on 

the EQJW 145. 

Every device in the grouping must be assigned a unique bus address. 

Address '1' must occur once in each grouping. To enable the device bus, 

parameter CP02 must be set to '1'. Then the address has to be set 

(parameter CP04). 

If a device in an installation that is in operation is exchanged and the 

addresses used are not known, the 'Automatic address assignment' function 

can be used (CP04 = Auto ). This causes the controller to search the bus 

for an unused address which it sets as parameter CP04. 

Please note these points about automatic address assignment: 

• All the other devices in the installation must be switched on. 

• Only one device must execute the function at a time. 

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6.2.2 Room operating unit EDB 100 

Using the EDB 100 room operating unit, the setpoint temperatures can be 

adjusted, various measured values can be interrogated and the mode can be 

switched over. These functions can be carried out from the living room. To 

connect room operating unit EDB 100 to the EQJW 145 the two device bus 

terminals of the room operating unit must be connected to terminals Data1 

and Data2 of the controller. The polarity is irrelevant here. The room 

operating unit needs a power supply of its own. 

On the EQJW 145, parameter CP18 must be set to '1' so that the room 

operating unit can be used. The address of the room operating unit must be 

set at parameter CP19. 

6.2.3 Sending and receiving outdoor temperatures 

Controllers which have an outdoor temperature sensor can be configured so 

that they make the measured outdoor temperature value available to other 

controllers via the device bus. This allows weather-compensated control 

even in installations with no outdoor temperature sensors of their own. 

To send an outdoor temperature, set parameter CP10 to '1' and to receive 

one, set parameter CP11 to '1'. 

6.2.4 Requesting and processing a heat requirement 

One or more controllers can be connected downstream in a controller 

grouping. You can use parameter CP12 to send the required flow 

temperatures for the various downstream control circuits to the controller for 

the primary circuit. If CP13 is set to '1' on the controller for the primary circuit, 

these data will be received. The controller will then control the highest flow 

temperature sent to it in the primary circuit. 

6.2.5 Requesting and processing a return temperature 

6.2.6 Synchronising the time 

Parameter CP14 can be used to measure the current return temperature 

(TRF) of a controller and to send it to other controllers. On the controllers that 

should receive the data, CP15 is set to '1'. 

If several controllers are interconnected, their times should be synchronised. 

For this purpose, CP09 is set to '1' on one of the controllers. Then, this 

controller sends its system time to the device bus once every 24 hours. This 

time is adopted by the other controllers. Regardless of the setting for 

communication parameter CP09, if the time is adjusted on one of the 

interconnected controllers, it will be adopted by the others. 

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6.3 Modbus communication 

The EQJW 145 can respond to enquiries in the Modbus RTU protocol as a 

slave. For this purpose, an RS-485 two-wire bus is connected to terminals 18 

and 19. A suitable Modbus master (BMS centre) can send enquiries or 

commands via this bus. Up to 247 devices can be addressed in a 

communication network based on the Modbus RTU protocol via an RS485 

interface. Up to 32 devices can be connected within a bus segment. 

To enable the function, CP02 must be set to 2 (see Section 3.2.4). A unique 

address must be assigned at CP05 and the transmission speed (Baud rate) 

must be selected with CP03. The data format supported by the controller is 

8n1, i.e. the data format comprises 8 data bits, no parity bits and one stop bit. 

The following commands are supported: 

___________________________________________________________________ 

Read Coil: 

AA 01 XX XX 00 01 CC CC 

-- -- ----- ----- ----- Coils = 

Adr RC CoilNr Coils CRC Number of coils to be read 

Response: 

AA 01 01 YY CC CC 

-- -- -- -- ----- Anz = 

Adr RC Anz Dat CRC Number of following data bytes 

___________________________________________________________________ 

Read Holding: 

AA 03 XX XX 00 01 CC CC 

-- -- ----- ----- ----- Reg. = 

Adr RH HR-Nr Reg. CRC Number of registers to be read 

Response: 

AA 03 02 XX XX CC CC 

-- -- -- ----- ----- Anz = 

Adr RH Anz Daten CRC Number of following data bytes 

___________________________________________________________________ 

Set Coil: 

AA 05 XX XX YY 00 CC CC 

YY = 0xFF to set, 

-- -- ----- ----- ----- 0x00 to delete 

Adr SC CoilNr Data CRC 

(Response identical) 

___________________________________________________________________ 

Set Holding: 

AA 06 XX XX YY YY CC CC 

-- -- ----- ----- ----- 

Adr SH HR-Nr Data CRC 

(Response identical) 

___________________________________________________________________ 

Fig. 6: Modbus communication-commandos 

Current measured values and operating statuses (for example) can be read 

out via Modbus. The controller outputs can be switched. The list of the 

available data points is given in the Annexe, Section 6.3.1. 

If desired, the controller will monitor the activity of the Modbus interface. As 

long as valid Modbus enquiries are registered regularly, the controller will reset 

the time monitoring. If no more enquiries are directed to the controller for 30 

minutes, it will operate independently again. Changes to the controller outputs 

triggered via Modbus then become invalid. This function can be disabled with 

CP27. 

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The EQJW 145 is compatible with the 'Modbus-Frame' protocol extension. 

Enquiries in standard format are answered in standard format, and frame 

enquiries receive an answer in frame format. This format allows reliable data 

transmission even if the data are segmented during transmission. For Modbus 

communication via modem, it is advisable to use the frame format because 

precisely timed data transmission from the sender to the recipient is often not 

available with modern transmission methods (modem with compression and 

error correction functions, digital telephone network). Details about the protocol 

extension are available on request. 

6.3.1 Modbus data points (holding register) 

Number of 

Description Comment Read 

Decimal 

Units With math. 

holding 

only 

points 

Sign? 

register 

40001 Product number Product number, device code yes 0 no 

40003 Firmware version Firmware version yes 2 no 

40004 Hardware version Hardware version yes 2 no 

40006 Int. SerNo Internal serial number yes 0 no 

40010 OutdoorTemp_AF1 Measured value for input TA no 1 °C yes 

40013 FlowTemp_VF1 Measured value for input TF yes 1 °C yes 

40014 HotWaterTemp2 Measured value for input TW2 yes 1 °C yes 

40017 ReturnTemp_RüF1 Measured value for input TRF yes 1 °C yes 

40020 RoomTemp_RF1 Measured value for input TR yes 1 °C yes 

40023 TankTemp Measured value for input TW1 yes 1 °C yes 

40100 Time Time (hours, minutes) no 2 no 

40101 Date Date (day, month) no 2 no 

40102 Year Year no 0 no 

40103 Switch position - top Rotary switch: 

0= Position for inputs, 1=Auto, 2=Off, 

3=Manual, 4=Normal, 5=Reduced 

40105 Switch position - bottom Rotary switch: 

0= Position for inputs, 1=Auto, 2=Off, 

3=Manual, 4=Increased, 5=Normal 

40106 Mode_Rk1 1=Auto, 2=Stdby, 3=Manual, 4=Sun, 

5=Moon 

40107 ControlSignal_Rk1 Opening for control signal Rk1 

[0...100%] 

yes 0 no 

yes 0 no 

no 0 no 

no 0 % no 

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Number of 


Decimal 


holding 

only 

points 

Sign? 

register 

40108 Mode_Rk2 1=Auto, 2=Stdby, 3=Manual, 4=Sun, 

5=Moon 

40109 ControlSignal_Rk2 Opening for control signal Rk2 

[0...100%] 

no 0 no 

no 0 % no 

40117 AT_HeatOff_Rk1 Value TA heating switch-off no 1 °C yes 

40120 OT_damping Damping of outside temperature in 

hours. 0 = off 

40121 Frost protection function 0 = not enabled, 

1 = enabled (TP off when frost), 

2 = enabled (TP on when frost) 

40145 Write-En_Modem Write enable for modem 

(code number input) 

no 0 Std no 

no 0 no 

no 0 no 

40146 Cycl_Init_Modem Modem - cyclical initialisation no 0 min no 

40147 DialPause_Modem Modem - dialling pause after engaged 

tone 

no 0 min no 

40148 DialRpt_Modem Modem - number of dialling attempts no 0 no 

40149 Timeout_Modem Watchdog, 'Modem time constant' no 0 min no 

40150 Device statusReg Device status register yes 0 no 

40152 ErrorstatArchiv Device status archive no 0 no 

40154 ErrorCounterReg Error counter register no 0 no 

41000 FlowSetp_Rk1 Flow setpoint no 1 °C yes 

41001 MaxFlow_Rk1 Maximum flow temperature no 1 °C yes 

41002 MinFlow_Rk1 Minimum flow temperature no 1 °C yes 

41003 Day_Setp_Rk1 Setpoint - normal mode no 1 °C yes 

41004 Night_Setp_Rk1 Setpoint - reduced mode no 1 °C yes 

41006 Slope_HeatCh_Rk1 Slope of heating characteristic no 1 no 

41065 Kp_Rk1 Proportional band no 1 no 

41066 Tn_Rk1 Reset time no 0 sec no 

41067 Ty_Rk1 Running time for actuator no 0 sec no 

41800 WW setpoint increased Setpoint WW for thermal disinfection 

(20°C…90°C) 

41807 WW setpoint normal Setpoint WW in normal case 

(20°C…90°C) 

no 1 °C no 

no 1 °C no 

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Number of 


Decimal 


holding 

only 

points 

Sign? 

register 

41865 Kp_Rk2 Proportional band (2nd heating circuit) no 1 no 

41866 Tn_Rk2 Reset time (2nd heating circuit) no 0 sec no 

41867 Ty_Rk2 Running time for actuator (2nd heating 

circuit) 

no 0 sec no 

42000 to 

42047 

Switching command, 1 st 

heating circuit 

48 possible switching commands for the 

1 st heating circuit 

no 0 no 

42100 to 

42147 

Switching command, 2 nd 



2 nd heating circuit 

no 0 no 

42200 to 

42247 

Switching commands 

for drinking water 

48 possible switching commands for 

drinking water 

no 0 no 

42300 to 

42347 

Switching commands 

for programmable relay 

output 

48 possible switching commands for pilot 

timer, circulation pump etc. 

no 0 no 

42500 to 

42519 

Calendar switching 

programme 


calendar switching programme 

no 0 no 

Tab. 6: Modbus data points 

The holding registers are transmitted in 16 bit. 

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Read and write weekly programme of switching commands via Modbus 

The holding registers from 42000 contain the switching commands for 

heating circuit 1. The following allocation applies: 

Command 

Command 

Command 

Command 

Command 

Command 

1 

2 

3 

4 

5 

6 

Mon 42000 42001 42002 42003 42004 42005 

Tue 42006 42007 42008 42009 42010 42011 

Wed 42012 42013 42014 42015 42016 42017 

Thu 42018 42019 42020 42021 42022 42023 

Fri 42024 42025 42026 42027 42028 42029 

Sat 42030 42031 42032 42033 42034 42035 

Sun 42036 42037 42038 42039 42040 42041 

Whole 

week 

42042 42043 42044 42045 42046 42047 

Tab. 7: Switching commands, heating circuit 

The holding registers as from 42100 contain the switching commands for 

drinking water regulation. The following arrangement applies: 

Command 

Command 

Command 

Command 

Command 

Command 

1 

2 

3 

4 

5 

6 

Mon 42100 42101 42102 42103 42104 42105 

Tue 42106 42107 42108 42109 42110 42111 

Wed 42112 42113 42114 42115 42116 42117 

Thu 42118 42119 42120 42121 42122 42123 

Fri 42124 42125 42126 42127 42128 42129 

Sat 42130 42131 42132 42133 42134 42135 

Sun 42136 42137 42138 42139 42140 42141 

Whole 

week 

42142 42143 42144 42145 42146 42147 

Tab. 8: Switching commands, drinking water circuit 

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The holding registers as from 42200 contain the switching commands for the 

pilot timer/circulation pump. The following arrangement applies: 

Command 

Command 

Command 

Command 

Command 

Command 

1 

2 

3 

4 

5 

6 

Mon 42200 42201 42202 42203 42204 42205 

Tue 42206 42207 42208 42209 42210 42211 

Wed 42212 42213 42214 42215 42216 42217 

Thu 42218 42219 42220 42221 42222 42223 

Fri 42224 42225 42226 42227 42228 42229 

Sat 42230 42231 42232 42233 42234 42235 

Sun 42236 42237 42238 42239 42240 42241 

Whole 

week 

42242 42243 42244 42245 42246 42247 

Tab. 9: Switching commands, pilot timer/circulation pump 

Every possible switching command has its own holding register (a 16-bit 

value) that can be read or written. For the contents of the register, the 

following applies: 

Command 

Time 

Numerical 

value 

(decimal) 

3 0 7 3 0 30730 

1 = Stand-by mode 

2 = Reduced mode 

3 = Normal mode 

Examples 

To change the factory setting for the first switching command (nominal mode, 

every day from 6:00 hrs) to 7:30 hrs, you have to write a value of 30730 

(instead of the current 30600) in register 42042. 

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Read and write calendar programme of switching commands via 

Modbus 

The 20 holding registers from 42500 to 42519 contain the 20 possible 

switching commands for the calendar switching programme. For the contents 

of the register, the following applies: 

Command 

Date 

Numerical 

value 

(decimal) 

1 3 1 1 2 13112 

1 = Stand-by mode 

2 = Reduced mode 

3 = Normal mode 

Important notes on the weekly and calendar switching programs: 

• All the registers for unused switching commands should contain the 

value 0. 

• The switching commands should be entered in the chronological order of 

time/date. The first command of a day/year should, therefore, be under 

'Command1'. 

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6.3.2 Modbus data points (coils) 

Coil no. Description Comment Can be 

set? 

Can be 

deleted? 

0 1 

4 Collective level bit Controller controls all functions 

independently of the control station 

yes no BMS AUTONO 

MOUS 

32 Binary input, Cl. 22 Binary input, Cl. 22/Cl. 21 no no OPEN CLOSED 

57 Binary output term. 

6 


7 


10 


8 

Relay output terminal 6 = UP (->CL96) yes yes OPEN CLOSED 

Relay output terminal 7 (->CL99) yes yes OPEN CLOSED 



88 EBN AF1 Controller measures outdoor 

temperature (HR40010) itself 

89 EBN Mode Rk1 Controller switches mode (HR40106) 

itself 


MOUS 


MOUS 

90 EBN control sig. 

Rk1 

Controller controls control signal Rk1 

(HR40107) itself 


MOUS 

96 EBN Binary term. 6 Controller switches heating medium 

pump UP1 (CL57) itself 

97 EBN Binary term. 10 Controller switches term. 10 (CL61) 

itself 


itself 


itself 


MOUS 


MOUS 


MOUS 


MOUS 

116 EBN FlowSetpoint 

Rk1 

Controller determines flow setpoint for 

Rk1 (HR41000) itself 


MOUS 

150 DisableManual Release manual levels yes yes INACTIV 

E 

157 DisableModem Disable dialling to BMS yes yes INACTIV 

E 

158 Dial going BMS dialling also with faults present yes yes INACTIV 

E 

ACTIVE 

ACTIVE 

ACTIVE 

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Coil no. Description Comment Can be 

set? 

Can be 

deleted? 

0 1 

159 Timeout BMS BMS monitoring yes yes INACTIV 

E 

ACTIVE 

1831 Temporary heating 

mode 

Enable temporary heating mode yes yes INACTIV ACTIVE 

Tab. 10: Modbus data points coils 

Level bits 

When a function of the controller is specified via Modbus (e.g. status of the 

UP output), the associated level bit (as it is called, designated as EBN) is 

deleted on the controller. The controller no longer controls the respective 

function itself in this case. When Modbus communication has finished (e.g. 

modem link disconnected), these level bits are set again after a timeout 

period of 30 minutes (unless this timeout function was disabled in CP27). 

From then on, the controller resumes control of all functions. 

6.4 Modem operation 

6.4.1 Connection with the modem 

A modem can be connected to the communication interface. This modem 

can be used for Modbus communication with a control station, or to send 

error messages via SMS. In both cases, the controller can build up a 

connection automatically if a fault occurs. 

The two functions can be combined. In this case, an error is signalled via 

SMS and via Modbus. 

A special connection line 5 (included in the scope of delivery for the modem) is 

used to connect with the modem on terminals 18 to 21 of the controller base. 

For this purpose, the end of the line is plugged into the controller base 

terminals with the pins in such a way that the screws are visible. Then tighten 

the four screws in question on the controller base. 

6.4.2 Modbus operation via modem 

CP02 must be set to 3 or 5. In Modbus mode, the controller accepts calls 

from a control station to the modem. In the event of an error, the control 

station is called on the telephone number entered at CP06. 

In the case of a modem connection, before executing write commands via 

Modbus, the valid code number (123) must be written to Modbus register 

40145. Otherwise, only read commands will be processed. This is used to 

prove the legitimation of the control system. If an incorrect code number is 

entered three times via Modbus, this is recorded as a prohibited access 

5 The cable between the controller and the modem should not be longer than 1.5 m for reasons related to EMC 

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attempt. As a result, an error bit is set and the control station is dialled by the 

controller. 

6.4.3 Sending SMS if there is a fault on the installation 

A modem enables the controller to send an error message to a mobile 

phone. As soon as a fault is registered in the device status register of the 

controller, an SMS message is sent. This requires modem access from a 

provider (SMSC = Short Message Service Center) which accepts SMS 

messages in TAP protocol. The message on the display of the mobile phone 

will then read something like this: 

'Heating controller EQJW 145/device status: [XXXX]/Note: 0 = no error. >0 = 

error has occurred' 

The value shown for the device status corresponds to the value of SERVice 

parameter SP02. The error that has occurred is stored in this value in 

encoded form (see Section 7.1.2). The SMS Center usually sends the date, 

time and sender's telephone number for this message. 

Access numbers 6 for SMSC: 

• D1 network of Deutsche Telekom: 0171 2521002 

ditto via ISDN using X.75: 0171 2521001 

• O2 Germany: 0179 7673425 

• E-PLUS Germany: 0177 1167 

• Cellnet (GB) 0044 7860980480 

To enable the function, CP02 must be set to 4 (or 5) and the telephone 

numbers of the provider (SMSC) and the mobile phone must be entered at 

CP07 and CP08 (see Section 3.2). 

6.4.4 Displays for modem operation 

When modem operation is enabled, an additional item appears in the display 

loop to show the current modem status. The following displays may appear 

here: 

Display 

FrEE 

PAUSE 

init 

Conn 

Meaning 

No communication, modem on standby 

No communication, dialling pause has not yet 

elapsed (however, calls are accepted) 

Modem is being initialised 

There is a connection to the provider or the 

control station 

6 

No guarantee is given of the availability and correctness of these numbers. Up-todate 

information on this subject must be requested from the network operator. 

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Display 

CALL 

EndE 

0FF 

Meaning 

The connection is being built up 

The connection is being disconnected 

It was impossible to reach the provider or the 

control station with the permitted number of 

dialling attempts (new dialling attempts will be 

made on the next day) 

Tab. 11: Display for modem operation 

6.5 Setting parameters using the PC 

Using an additional USB adaptor and the Config-equitherm software, the 

EQJW 145 can be configured and parameterised using a PC. To do so, the 

adaptor on the EQJW 145 should be connected to the terminals for the 

Modbus communication. 

Communication type Modbus RTU (CP02 = 2) is set ex works. However, the 

address 255 has been set instead of a valid Modbus address in the range 

1 - 247. This makes it possible to communicate with the controller using the 

EQJW 145 via the Config-equitherm software, without having to set any 

communication parameters on the EQJW 145 beforehand. 

It is not possible to communicate with non-configured controllers if several 

controllers that have not yet been configured are connected to a network. In 

such cases, all except one of the controllers that have not yet been 

configured have to be switched off first. 

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Faults 

7 Faults 

7.1 Displaying faults 

7.1.1 Error list 

Before you call a heating specialist, check: electrical fuses, main installation 

switch, burner function, heat medium pump, valve, fault display, time and day 

of the week for the EQJW 145. 

An operating fault is shown on the display by the flashing fault symbol (see 

section 2.5). The 'Error' message is shown. Push the input button to open the 

error level. In some cases, you can poll to check for multiple faults by turning 

the input button. As long as an acute operating fault is present, the error 

message is kept in the display loop, even if it is not opened by pushing the 

input button. The error is shown in the error level according to the list below. 

In the first three minutes after you switch the controller on, evaluation and 

display of faults is suppressed to wait until other parts of the installation are 

switched on. 

Err 1 

Err 2 

Err 3 

Err 4 

Err 5 

Err 6 

Err 10 

Err 11 

Sensor failure TF 

Sensor failure TA 

Sensor failure TR 

Sensor failure TRF 

Sensor failure TW2,TRF2 

Sensor failure TW1, TF2 

Error message received via device bus 

Prohibited access via modem 

Tab. 12: Error list 

7.1.2 Device status 

The device status register contains the information on faults that are present 

according to the error list, in coded form. The register can be read with the 

help of the service parameters, the communication parameters or via the 

Modbus. If a fault message is sent via SMS or Modbus, the fault is notified in 

the form of the device status. 

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The coding is as follows:- 

Err 1 (Sensor failure TF) ↔ 1 

Err 2 (Sensor failure TA) ↔ 2 

Err 3 (Sensor failure TR) ↔ 4 

Err 4 (Sensor failure TRF) ↔ 8 

Err 5 (Sensor failure TW2,TRF2) ↔ 16 

Err 6 (Sensor failure TW1, TF2) ↔ 32 

Err 10 (Error message received via device bus) ↔ 512 

Err 11 (Prohibited access) ↔ 1024 

The value shown as the device status is the total of the codings for the 

existing errors. 

Example: error on TF and T R (Err1 and Err3) results in error value 5 for the 

device status. 

Err1 1 

Err3 4 

Total (= device status): 5 

7.2 Logbook 

Malfunctions, control offsets and limit violations of flow/output are entered in 

the logbook. The following applies: 

• Control offsets are entered whenever the actual value deviates by more 

than 10K for at least 30 minutes 

• Limit violations are entered whenever the pulse rate remains more than 

10% too high for at least 30 minutes 

To view the logbook entries, select parameter SP03 in the SERVice level (see 

Chapter 3.3). 

The entries can be called up as follows. When SP03 is called up, the year in 

which the last entry was recorded is shown. Turn the button to view the years 

in which at lease one entry was made. Press the button to get to the next 

level, which shows the days (DD.MM) of the relevant year on which an entry 

was made. Press the button to select a day and show the times (HH:MM) at 

which entries were made on the relevant day were made. 

Press the button to view the device status (for coding, see Chapter 7.1.2) or 

the control offset or the limit violation. Press the ESC key to move back one 

level, or several times to leave the SP03 level. 

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Faults 

7.3 Reset functions 

The same symbols are used for the control offset or the limit violations that 

are also used in the normal display of the measured values (radiators etc.). 

By turning the button, you can change between the display of the recorded 

setpoint and the excessively-deviating actual value. If the flow rate is too 

high, it is displayed as a percentage. 

A repeated fault is entered afresh only if it no longer existed in the meantime. 

The logbook can hold a total of 100 entries. When this number has been 

reached, the oldest entries are overwritten (circular buffer). 

It is possible to reset the EQJW 145 to the factory setting. To do this, go to 

the SERVice level (see section 3.1.1) and set parameter SP04 to: 

• 1 Reset SERVice and communication parameters 

• 2 Reset switching commands 

• 3 Reset SERVice and communication parameters and switching 

commands 

7.4 Actions to deal with faulty temperature value measurements 

The 'Sensor fault' symbol (see 2.1) appears if there is a short-circuit or an 

interruption in sensor supply lines. The following list states how the controller 

behaves if individual sensors fail. 

Sensor failure TA 

Sensor failure TF 

Sensor failure 

TRF,TRF2 

Sensor failure TR 

Sensor failure TW1 

Sensor failure TW2 

If the outdoor sensor is faulty, a flow temperature setpoint of 50°C is 

operated, or if the maximum flow temperature (set at parameter SP22) is less 

than 50°C, the maximum flow temperature is operated. 

If the flow temperature sensor is faulty, the valve assumes the 30% valve 

position. 

If the return temperature sensor is faulty, the controller operates as if no 

return temperature sensor were present. 

If the room sensor fails, the controller operates according to the settings for 

operation without a room sensor. 

If the domestic hot water tank sensor is faulty, no further DWH heating will be 

performed. 

If the 2nd DHW tank sensor is faulty, no further tank charging is performed. 

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Using the controller 

8 Using the controller 

8.1 General information 

The EQJW 145 controller is used for weather-compensated flow temperature 

control of a heating circuit. An additional room temperature connection is 

possible. The controller changes the operating status in accordance with the 

switching commands that are entered, on a time-dependent basis. In 

addition, hot water preparation can be controlled. 

It has an anti-frost function, an automatic summer time changeover, an antijamming 

feature for the pump and a floor drying function. A communication 

interface allows connections with other devices and with a Modbus control 

station (also via modem), or automatic transmission of fault messages to a 

mobile phone as SMS messages via modem. Two rotary switches allow 

immediate mode changes and direct access to the main settings. An input 

button makes it easy to change the device's settings. 

This application requires an additional safety thermostat. 

CAUTION! 

Before the installation is commissioned, the slope of the characteristic and 

the flow temperature limit must always be checked. 

Depending on the application, the following settings are recommended: 

Radiator heating 

characteristic slope SERVice-Parameter SP41 Value 1,4 ( ) 

flow temperature limit SERVice-Parameter SP22 Value 75°C ( ) 

Floor heating 

characteristic slope SERVice-Parameter SP41 Value 0,6 

flow temperature limit SERVice-Parameter SP22 Value 50°C 

8.2 Examples of use 

The recommended values have been tried and tested but they are not 

necessarily the ideal solutions for every installation. No liability is accepted 

for the values indicated here 

Some typical and common applications for the control models stored in the 

EQJW 145 are described below. However, not all of the heating controller's 

capabilities are described. By parameterising accordingly, further applications 

can be included, enabling the equitherm® EQJW 145 to be adapted to a 

wide range of installations. 

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8.2.1 Control model 1 

PI 

2P 

Fig. 7: EQJW 145 Control model 1 

Weather-compensating control of the flow temperature (secondary) in 

converter installations with DHW preparation (parallel circuit) with 2 charge 

pumps, via an additional converter (tank charge system) 

Main SERVice parameters (see also 3.3) 

• SP06 1 (Control model ) 

• SP08 1 (Room sensor connection) 

• SP09 3 (Room temperature connection enabled) 

• SP34 2 (DHW heating with separate charge pump using two 

DHW sensor. ) 

• SP49 2 (Configurable output is used to activate a 2nd charge 

pump) 

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PI 

AB 

A 

UP 

LP1 

B 

Fig. 8: EQJW 145 control model 1 

Weather-compensating flow temperature control (secondary) in converter 

installations with priority DHW switching via diverter valve. 

Main SERVice parameters (see also 3.3) 


• SP13 1 (Return temperature recording enabled) 

• SP20 120 (Runtime for the 2nd final control element, i.e. the 

diverter valve in this case) 

• SP28 5 (Intervention intensity for violation of limit value for 

return temperature ) 

• SP34 3 (DHW preparation with diverter valve using one DHW 

sensor) 

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PI 

2P 


Weather-compensating flow temperature control (secondary) in converter 

installations with DHW preparation using 2 charge pumps via an additional 

converter, and controller of the heating temperature for the DHW (tank 

charge system) 

Main SERVice parameters (see also 3.3): 


• SP08 4 (Room sensor input used as 2nd flow sensor for the 

DHW) 

• SP34 2 (DHW preparation with separate charge pump using 

two DHW sensors) 

• SP39 -30 (Limit value for the outdoor temperature at which DHW 

heating takes place with priority or in parallel ) 

• SP49 2 (Configurable output is used to activate a 2nd charge 

pump) 

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PI 

2P 


Weather-compensating flow temperature control and DHW preparation via a 

mixer valve 


• SP06 2 (Control model) 

• SP08 2 (Connect room operating unit EGS52/15 with room 

sensor) 

• SP09 1 (Room temperature connection is enabled if 

TRi > TRs) 

• SP34 2 (DHW preparation with separate charge pump using 

two DHW sensors) 

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PI 

SP 49 

2P 


Weather-compensating flow temperature control (secondary) and separate 

fixed value control (secondary) for DHW preparation in converter installations 


• SP06 3 (Control model) 

• SP07 1 (Connection of an external timer to switch over the 

heating circuit mode) 

• SP08 2 (Connection of a room operating unit EGT333 with 

room sensor) 

• SP09 3 (Room temperature connection is enabled if 

TRi TRs) 

• SP13 1 (Return temperature recording is enabled) 

• SP20 120 (Runtime for second final control element, i.e. in this 

case for the final control element for fixed value control) 

• SP27 90 (Maximum limit for return temperature during DHW 

Heating, i.e. with this control model, for fixed value 

control ) 

• SP28 3 (Intervention intensity for violation of return temperature 

limit value). 

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Economy tips 

9 Economy tips 

Heating is by far the largest consumer of energy in the household. 78 % of 

the energy required in a household is consumed by the heating (source: 

'Wohnen & Energie Sparen/Living and Saving Energy'. BINE Information 

Service of the Karlsruhe Technical Information Centre. July 2004). It is 

precisely here that major savings are possible. Most residents underestimate 

the potential for saving on heating and over-estimate the potential 

for saving on other consumers. 

Fig. 12: Consumers of energy in the household 

1 

2 

3 

4 

5 

6 

Hotwater 11% 

Cooling, freezing 3% 

Washing, cooking, washing-up 2,5% 

Light 1,4% 

Others 4,5% 

Heating 78% 

Better insulation could save almost half of the heating energy. Savings are 

also possible thanks to modern heating installations with intelligent control. A 

reduction of 3°C at night with the heating controller saves about 5 to 8 % of 

the heating energy. A constant bedroom temperature of 18°C with a reduced 

night-time temperature in the living rooms saves about 12 to 15 %. A 

constant bedroom temperature of 16°C with a reduction of 3°C in the living 

rooms during absences and at night will save about 25 %. 

More economy tips 

Bring the time when reduced mode starts as far forward as possible. Each 

degree by which the normal temperature is reduced will save about 6% of 

heating costs. Only ventilate briefly, but powerfully. Close shutters and blinds 

at night. Keep heaters clear, i.e. do not place any furniture or curtains in front 

of the heaters, etc. 

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Resistance values for the Ni1000 sensors 

10 Resistance values for the Ni1000 sensors 

The temperature sensors required depending on the use of the EQJW 125 

must conform to DIN 43760. 

Temperature (°C) 

Resistance value (Ω) Ni1000 

90 1549 

80 1483 

70 1417 

60 1353 

50 1291 

40 1230 

30 1171 

20 1112 

10 1056 

0 1000 

–10 946 

–20 893 

–30 842 

–40 791 

Tab. 13: Resistance value Ni1000 

The resistance value of the nickel measuring resistor changes in relation to 

the temperature. The temperature coefficient is always positive, i.e. the 

resistance increases as the temperature rises. See the table of values 

(DIN 43760). Within the specified tolerances, the sensors can be exchanged 

without calibration. 

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Accessories 

11 Accessories 

12 Wiring diagram 

See the Sauter PDS for more components. 

DATA2 

DATA1 

M 

MOD 1, 2 

M 

EGS 52/15 EGT 333 EGS 52/15 EGT 333 

B 

A 

MOD 3 

M 

M 

Fig. 13: Wiring diagram 

13 Dimension drawing 

146 

61 

98 

92 

138 

Fig. 14: Dimension drawing of EQJW 145 

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Technical data 

14 Technical data 

14.1 Overview of technical data 

Power supply: 

Power supply tolerance: 

Power consumption: 

230 V 

±15 %, 50…60 Hz 

approx. 2 VA 

Type of protection: IP40 (when fitted in panels) (EN 60529) 

Protection class: II (EN 60730-1) 

Permitted ambient temperature: 

Permitted storage temperature: 

Permitted ambient humidity: 

Conformity 

EMC immunity 

0…+50°C 

–25°C…+65°C 

5…95 % rH (no condensation) 

EN 12098 and CE 

EN 61000-6-1, 2 

EMC irradiation EN 61000-6-3, 4 

Safety EN 60730-1 

Weight with base 

approx. 0.4 kg 

Dimensions with base (W × H × D) 146 x 98 x 58 

Time-switch: 

• Running capacity 

• Accuracy 

• Switching period for weekly 

programme 

• Number of switching commands, 

weekly programme 

• Switching period for calendar 

programme 

• Number of switching commands, 

calendar programme 

Min. 24 hours, after supply was connected 

for min. 4 hours. parameters, switching 

commands are stored permanently 

Better than 1sec/day 

10 min 

6 / day or 42 / week 

1 day 

20 

Inputs: 

• 5 temperature sensors 

• 1 temperature sensor or remote 

control unit 

• 1 binary input/ pulse input 

Outputs: 

• relay output for pumps/pilot timer 

6 relays 

normally open contact, 230V/2A/cos ϕ> 0.5 

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• relay outputs for final control element permitted start-up current 7A (max. 1sec) 

2 x normally open contacts, 230V/0.5A/cos 

ϕ> 0.5 

Interface: 

• electrical specification 

• interface protocols 

RS485, 2-wire. similar to RS232 

Modbus (slave, format Modbus RTU, 

connection with control station, also possible 

via modem), or alternatively, device bus for 

connection to other devices. fault signalling 

with modem DataMod10 via SMS/fax 

Measuring accuracy Better than ± 0.3 K @ 25°C 

Time constant for processing measured values approx. 10 sec for TA, 

< 5 sec. for TR and TF 

Cycle time Valve runtime / 15 

Neutral zone 

Minimum pulse duration 

Pump after-run time 

Heating characteristic 

< 0.5 K 

250 msec 

2 x Ty 

Curved, without the influence of extraneous 

heat (see SP41) 

Summer/winter heating limit • ON equals summer winter. 

• OFF equals winter summer 

• On when TAged < TS/W – 1 K. 

OFF when TAged > TS/W 

• TS/W adjustable 

Zero-point correction for room temp 

Zero-point correction for outside temp. 

Zero-point correction for return temperature 

up to ± 6 K is possible 



Tab. 14: Overview of technical data 

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14.2 Overview of main functions 

Room temperature 

connection 

Anti-frost 

Pump anti-jamming 

facility 

Multifunctional 

relay output 

Flow temperature 

limitation 

Limitation of TW 

Legionella function 

Limitation of return 

temperature 

The room temperature connection is enabled in the SERVice level. This 

requires a room temperature sensor. The influence of the room temperature 

connection can be set in SERVice level. Maximum change to TF due to room 

temperature connection: 

± 30 K. 

The anti-frost function cuts in if a control circuit is in OFF mode and the antifrost 

function was enabled in SERVice level. In addition, the anti-frost limit 

must have been undercut. The anti-frost limit is 3°C for the outdoor 

temperature. The anti-frost function is disabled if the outdoor temperature is 

higher than 4°C. When the anti-frost function cuts in, a flow temperature of 

10°C is controlled for the heating circuits. If the DHW temperature < 5°C, 

heating to 10°C takes place. 

The pump anti-jamming facility function is enabled in SERVice level. At 00:00 

hours every day, a pump is switched on for 60 seconds if it was not operated 

during the preceding 24 hours. This function is active in all modes except 

manual mode. 

One of the output relays (terminal 10) can be parameterised for a very wide 

variety of functions. This enables the output to be used as a pilot timer 

output, a collective fault alarm, to control a 2nd tank charge pump, a 

circulating pump, for forced control of the heating medium pump or for 

indicating a heat requirement. 

The maximum and minimum setpoints for the flow temperature are limited. If 

the calculation for the setpoint for the flow temperature is outside of the limit, 

then the limit temperature is controlled. The limit value is set in SERVice 

level. In manual mode, flow temperature control is not enabled and so there 

is no flow temperature limit. If the anti-frost function is active, the flow 

temperature limit is disabled. 

The maximum setpoint for TW can be limited in SERVice level. 

The weekly switching programme can be used to increase TW at regular 

intervals. If a higher TW is required for a longer period independently of the 

switching programme, a separate switch is available. 

TRF can be monitored for the maximum actual value. If the temperature 

exceeds a limit for the actual value of TRF, the setpoint for TF is reduced. For 

the heating circuit, a limitation characteristic dependent on the outdoor 

temperature (fixed value-sequence-fixed value) can be defined, and a fixed 

limit value can be defined for the DHW preparation. The limitation function or 

the limit value and the influence on the setpoint for TF are parameterised in 

SERVice level. 

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Flow and power 

limitation 

Minimum flow 

limitation 

Manual mode 

Automatic cut-off 

Optimisation of 

switching times 

Floor drying 

The maximum flow or the maximum power can be limited. Limit values can 

be specified for the heating, DHW preparation and the combination of heating 

and DHW preparation. If the limit value is exceeded the flow temperature is 

reduced. The limit values and intervention intensity when the limit is 

exceeded are parameterised in the SERVice level. 

The minimum flow can be limited. To do so, you can use a pulse signal from 

a flow measuring device or the signal from the auxiliary contacts of a control 

unit. When the function is activated, the valve on the primary side closes and 

does not open again until the setpoint for TF is 5K higher than the actual 

value. 

In manual mode, the relays for the various outputs can be activated 

separately. The setting for this is menu-led if manual mode has been 

enabled, which is done in the SERVice level. The factory setting for manual 

mode is ‘not enabled’. 

With the automatic cut-off facility, the heating controller saves energy without 

any loss of comfort levels, wherever possible. There are several ways of 

having a heating circuit switched off by the heating controller: 

• The current mode for the heating circuit is OFF 

• Summer/winter heating limit is OFF 

• TA ≥ TRs or TA ≥ 15 °C (lower value). Bei TA ≤ TRs – 1 K switches the 

controller back on. 

The optimisation function causes the heating to be switched on/off at the 

optimum time in automatic mode when changing from reduced or back-up 

mode into normal mode. The switching times are chosen so that the room 

temperature's setpoint is reached at the time that is set in the switching 

programme. At the same time, energy is saved by switching on as late as 

possible and off as early as possible. 

EN 1264 Part 4 describes how cement floors must be treated before floor 

coverings are laid with functional heating. Firstly, a flow temperature of 25°C 

must be maintained over 3 days for this purpose. After this, the maximum 

flow temperature should be maintained for 4 more days. This function has 

been implemented in the EQJW 145. In addition, there is now a ready-forlaying 

heating function. This involves raising the flow temperature gradually 

by 5K per day, starting from 25°C, until the maximum flow temperature is 

reached. Thereafter, the flow temperature is reduced again gradually by 5K 

per day until 25°C is reached. You can call the functions up via the SERVice 

level. 

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Switching 

programmes 

Duplication of TA 

Modbus 

communication 

Alarms via SMS 

3 weekly switching programmes with up to 48 switching commands and one 

calendar switching programme with up to 20 switching commands are 

available. The minimum switching interval is 10 minutes or 1 day. Modes 

from weekly and calendar switching programmes with lower energy 

consumption take priority. The commands for the calendar switching 

programme are retained. 

The outdoor temperature is recorded by an EQJW 145 and is made available 

to the remaining controllers as a measured value via the device bus. 

Parameterisation for this purpose is performed in communication level. 

Communication with the EQJW 145 is possible via the RS 485 interface with 

the help of the Modbus RTU protocol. Data can be exchanged. The EQJW 

145 is always used as a slave in this case. 

A modem is used to send alarm texts to a mobile telephone as SMS, via a 

provider. An interface similar to an RS 232 is used for this purpose. The TAP 

(Telocator Alphanumeric Protocol) is used. 

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Overview of controller settings 

15 Overview of controller settings 

15.1 List of SERVice parameters 

If the factory setting for the SERVice parameters is changed, the modified 

values must be entered in the table below. 

Parameter (change) Parameter 

SP01 X.xx SP28 1 

SP02 0 SP29 no 

SP30 no 



SP06 1 SP33 0.0 

SP07 0 SP34 1 

SP08 0 SP35 60 

SP09 0 SP36 5 

SP10 20 SP37 70 

SP11 0 SP38 10 

SP12 0 SP39 -30 

SP13 0 SP40 4 

SP14 0 SP41 1.4 

SP15 40 SP42 10 

SP16 40 SP43 0 

SP17 240 SP44 15 

SP18 240 SP45 21 

SP19 120 SP46 -16 

SP20 180 SP47 2 

SP21 5 SP48 1 

SP22 75 SP49 0 

SP23 90 SP50 0 

SP24 90 SP51 25.10 

SP25 0 SP52 25.03 

SP26 1.0 SP53 0 

SP27 90 SP54 0 

SP60 0 

SP61 0 

Tab. 15: List of SERVice parameters 

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15.2 List of communication parameters 

If the factory setting for the communication parameters is changed, the 

modified values must be entered in the table below. 

Parameter (change) Parameter 

CP01 X CP15 0 

CP02 2 CP16 0 

CP03 19.200 CP17 0 

CP04 CP18 0 

CP05 CP19 - 

CP06 CP20 0 

CP07 CP21 5 

CP08 CP22 5 

CP09 0 CP23 5 

CP10 0 CP24 0 

CP11 0 CP25 0 

CP12 0 CP26 0 

CP13 0 CP27 0 

CP14 0 

Tab. 16: List of communication parameters 

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Overview of controller settings 

15.3 Weekly switching programme: heating 

Day Time Mode (Deleted) 

Daily 06:00 Normal mode 

Daily 22:00 Reduced Mode 

Switching commands added for the weekly switching programme 

Day Time Mode 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

15.4 Calendar switching programme: heating 

Switching commands added for the calendar switching programme 

Day Month Mode 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

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15.5 Weekly switching programme: domestic hot water 


Daily 06:00 Normal Mode 


Day Time Mode 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

15.6 Weekly switching programme: pilot timer/circulating pump 


Daily 06:00 Normal Mode 

Daily 22:00 Reduced Mode 


Day Time Mode 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

____________ ____________ ____________ 

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Table of Figures 

Table of Figures 

Fig. 1: EQJW 145 - Front view ................................................................................... 11 

Fig. 2: EQJW 145 - Top Rotary Switches ................................................................... 12 

Fig. 3: EQJW 145 - Bottom Rotary Switches ............................................................. 12 

Fig. 4: Limitation function ............................................................................................ 29 

Fig. 5: Guideline for the slope of the heating characteristic: ...................................... 33 

Fig. 6: Modbus communication-commandos .............................................................. 68 

Fig. 7: EQJW 145 Control model 1 ............................................................................. 85 

Fig. 8: EQJW 145 control model 1 .............................................................................. 86 

Fig. 9: EQJW 145 control model 1 .............................................................................. 87 

Fig. 10: EQJW 145 control model 2 ............................................................................ 88 

Fig. 11: EQJW 145 control model 3 ............................................................................ 89 

Fig. 12: Consumers of energy in the household ......................................................... 90 

Fig. 13: Wiring diagram............................................................................................... 94 

Fig. 14: Dimension drawing of EQJW 145 ................................................................. 94 

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List of tables 

List of tables 

Tab. 1: SERVice parameter ........................................................................................ 17 

Tab. 2: SERVice parameter ........................................................................................ 24 

Tab. 3: DHW preparation ............................................................................................ 31 

Tab. 4: Communication parameters ........................................................................... 41 

Tab. 5: statuses for domestic hot water...................................................................... 58 

Tab. 6: Modbus data points ........................................................................................ 71 

Tab. 7: Switching commands, heating circuit ............................................................. 72 

Tab. 8: Switching commands, drinking water circuit .................................................. 72 

Tab. 9: Switching commands, pilot timer/circulation pump ........................................ 73 

Tab. 8: Modbus data points coils ................................................................................ 76 

Tab. 11: Display for modem operation ....................................................................... 78 

Tab. 12: Error list ........................................................................................................ 80 

Tab. 13: Resistance value Ni1000 .............................................................................. 92 

Tab. 12: Overview of technical data ........................................................................... 97 

Tab. 15: List of SERVice parameters ....................................................................... 102 

Tab. 16: List of communication parameters ............................................................. 103 

7010015003 B 107 

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Abbreviations 

Abbreviations 

Abbreviations 

BW 

CO 

DHW 

HK 

Imp 

KW 

MOD 

SE 

SP 

TA 

TF 

TFi 

TFS 

TFsmax 

TFsmin 

TR 

TRF 

TRi 

TRmax 

TRmin 

TRS 

TS/W 

TW 

TY 

UP 

Xi 

XP 

Term 

domestic hot water 

communication 

domestic hot water 


pulse 

cold water 

control model 

SERVice 

SERVice parameter 

outdoor temperature 

flow temperature 

actual value for flow temperature 

setpoint for flow temperature 

maximum limitation for setpoint of TF 

minimum limitation for setpoint of TF 

room temperature 

return temperature 

actual value of room temperature 

maximum limitation of adjusting range for TRS 

minimum limitation of adjusting range for TRS 

setpoint for room temperature 

heating limit 

DHW temperature 

valve running time 

heating pump 

actual value 

proportional band 

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Index 

Index 

Abkürzungsverzeichnis ............................................................................. 109 

Accessories ................................................................................................. 94 

Actuator ....................................................................................................... 28 

Address ....................................................................................................... 66 

After-run factor ............................................................................................ 34 

After-run time .............................................................................................. 32 

Anti-frost ................................................................................................ 34, 98 

Automatic cut-off ......................................................................................... 99 

Basic programme .......................................................................................... 9 

Baud rate .................................................................................................... 42 

Charge pump .............................................................................................. 32 

Coil .............................................................................................................. 75 

Collective alarm ........................................................................................... 35 

Communication ........................................................................................... 42 

Communication level ............................................................................. 16, 38 

Connect ....................................................................................................... 27 

Control model .............................................................................................. 25 

Control quality ............................................................................................. 28 

Control station ....................................................................................... 42, 45 

Curtains ....................................................................................................... 90 

Data bit ........................................................................................................ 68 

Data format ................................................................................................. 68 

Date ............................................................................................................ 16 

Date periods ................................................................................................ 54 

Demand requirement ................................................................................... 33 

Design temperature ..................................................................................... 34 

Device status ................................................................................... 25, 77, 80 

DHW ..................................................................................................... 23, 31 

DHW preparation ........................................................................................ 25 

DHW temperature ................................................................................. 32, 57 

Dialling attempt ........................................................................................... 44 

Dialling pause .............................................................................................. 44 

Domestic hot water...................................................................................... 17 

Energy consumption .................................................................................... 90 

Error message ....................................................................................... 45, 77 

Error status ................................................................................................. 44 

Extraneous heat portion .............................................................................. 33 

Factory setting ......................................................................... 7, 25, 102, 103 

Fault ................................................................................................ 48, 50, 80 

Fault dialling ................................................................................................ 45 

Fault messages ........................................................................................... 44 

First-time operation ..................................................................................... 15 

Floor drying ................................................................................................. 38 

Floor heating ............................................................................................... 84 

Flow ............................................................................................................ 99 

Flow temperature ............................................................................ 28, 29, 43 

Flow temperature sensor ............................................................................. 82 

Flow temperatures....................................................................................... 67 

Function heating .................................................................................... 37, 99 

Functions .................................................................................................... 98 

Furniture ...................................................................................................... 90 

7010015003 B 109 

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Index 

Gerätestatus................................................................................................ 81 

Heat requirement .................................................................................. 43, 67 

Heaters ....................................................................................................... 90 

Heating characteristic .................................................................................. 33 

Heating controller .......................................................................................... 9 

Heating limit .................................................................................... 33, 34, 97 

Hilfskontakt ................................................................................................. 26 

Holidays ...................................................................................................... 54 

Incident ....................................................................................................... 64 

Index ......................................................................................................... 110 

Installation ................................................................................................... 64 

Installation instructions .................................................................................. 9 

Intervention intensity ................................................................................... 30 

Kommunikation ........................................................................................... 78 

LC display ................................................................................................... 13 

Legionella function ...................................................................................... 98 

Limit ............................................................................................................ 98 

Limitation ..................................................................................................... 84 

Limiting function .......................................................................................... 29 

Manual mode ........................................................................................ 25, 64 

Maximum limit ............................................................................................. 29 

Maximum limitation ...................................................................................... 28 

Maximum selection ...................................................................................... 43 

Measuring accuracy .................................................................................... 97 

Minimum limitation....................................................................................... 28 

Mobile phone ......................................................................................... 43, 77 

Modbus ............................................................................................... 68, 100 

Mode ............................................................................................... 51, 54, 58 

Modem ...................................................................................... 42, 44, 66, 76 

Modem operation .................................................................................. 48, 50 

Once-only tank charge ................................................................................ 63 

Operating mode .......................................................................................... 61 

Outdoor temperature ..................................................................... 28, 43, 100 

Overview of controller settings .................................................................. 102 

Parallel operation ........................................................................................ 32 

Parity bit ...................................................................................................... 68 

Party ........................................................................................................... 56 

Pilot timer .............................................................................................. 34, 61 

Power .......................................................................................................... 99 

Primary circuit ............................................................................................. 67 

Primary side ................................................................................................ 25 

Priority ......................................................................................................... 32 

Proportional band ........................................................................................ 28 

Protective functions ................................................................................. 9, 28 

Provider ................................................................................................. 42, 77 

Pulse input .................................................................................................. 26 

Pulse measurement .................................................................................... 30 

Pump anti-jamming facility ..................................................................... 35, 98 

Quantity limitation ........................................................................................ 26 

Quantity metering ........................................................................................ 26 

Radiator heating .......................................................................................... 84 

Reset........................................................................................................... 25 

Reset time ................................................................................................... 28 

Resistance values, Ni1000 .......................................................................... 92 

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Index 

Return temperature .................................................. 28, 29, 43, 48, 50, 67, 98 

Room operating unit .............................................................................. 44, 67 

Room sensor ............................................................................................... 44 

Room temperature ...................................................................................... 27 

Room temperature connection .............................................................. 27, 98 

Room temperature recording ....................................................................... 26 

Rotary switch ............................................................................................... 46 

RS485 ......................................................................................................... 42 

Safety thermostat ........................................................................................ 84 

Scanning time ............................................................................................. 27 

Schaltbefehl ................................................................................................ 73 

Secondary side ........................................................................................... 25 

Seepage limitation ................................................................................. 26, 31 

Sensors ....................................................................................................... 92 

Serial number .............................................................................................. 42 

SERVice level ............................................................................................. 19 

SERVice parameters ..................................................................................... 9 

Setpoint boost ............................................................................................. 32 

Slope ..................................................................................................... 29, 84 

SMS .................................................................................................... 42, 100 

Software version ......................................................................................... 25 

Stop bit ........................................................................................................ 68 

Summer/winter time changeover ................................................................. 36 

Switch positions .......................................................................................... 12 

Switching command ............................................................. 25, 51, 54, 58, 61 

Switching difference .................................................................................... 32 

Switching programmes .............................................................................. 100 

Symbols ...................................................................................................... 13 

Taste ............................................................................................................. 7 

Technical data ............................................................................................. 96 

Temperature level ......................................................................................... 9 

Time ...................................................................................................... 15, 67 

Time changeover ........................................................................................ 36 

Time constant .............................................................................................. 97 

Time interval measurement ......................................................................... 30 

Time synchronisation .................................................................................. 43 

Timeout ....................................................................................................... 44 

Valve drive .................................................................................................. 28 

Valve runtime .............................................................................................. 28 

Weekly switching programme ........................................... 51, 58, 61, 104, 105 

Winter/summer time changeover ................................................................. 35 

7010015003 B 111 

© Fr. Sauter AG

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