K Control panel

ENGLISH
K Control panel
For DTG 320 Gas-fired Boilers
30
0
l
6A
Instructions
Electrical connections
Start-up
Operation
08/00 - 94858190 - 8358-4160

CONFORMITY / MARKING
This product complies with the requirements of the
following European Directives and Standards:
- 73/23 CEE Low voltage directive
Relevant standard: EN 60.335.1.
- 89.336 CEE Electromagnetic Compatibility Directive
Relevant standards: EN 50.081.1 / EN 50.082.1 /
EN 55.014.
CONTENTS
1. INTRODUCTION .................................................................................................................................................. 3
2. GENERAL ........................................................................................................................................................... 3
2.1 Overview ...................................................................................................................................................... 3
2.2 Description ................................................................................................................................................... 4
2.3 Operating principle ....................................................................................................................................... 5
3. ELECTRICAL CONNECTIONS ........................................................................................................................... 6
3.1 Installation without optional features ............................................................................................................ 6
3.2 Installation with optional MB2 domestic hot water module .......................................................................... 7
3.2.1 Fitting the MB2 module ....................................................................................................................... 7
3.2.2 Connections ........................................................................................................................................ 8
3.3 Installation with optional SV-matic weather compensator .......................................................................... 10
3.3.1 Fitting the SV-matic weather compensator ....................................................................................... 10
3.3.2 Connections ...................................................................................................................................... 11
3.4 Installation with optional cascade board .................................................................................................... 13
3.5 Connecting the safety thermostat alarm indicator ..................................................................................... 13
3.6 Connecting the hour run meter(s) .............................................................................................................. 13
3.7 Connecting the flue gas thermometer ........................................................................................................ 14
3.8 Connecting the burner + options ................................................................................................................ 14
4. SKELETON DIAGRAMS.................................................................................................................................... 15
4.1 Skeleton diagram 2 stages without optional features ................................................................................ 15
4.2 Skeleton diagram 2 stages with optional domestic hot water priority module ........................................... 16
4.3 Skeleton diagram 2 stages with optional regulator .................................................................................... 17
4.4 Skeleton diagram 2 stages with optional cascade board ........................................................................... 18
5. START-UP AND OPERATION .......................................................................................................................... 19
5.1 Control panel without optional features ...................................................................................................... 19
5.2 Control panel with optional MB2 domestic hot water module .................................................................... 20
5.3 Control panel with optional SV-matic weather compensator ..................................................................... 22
5.4 Control panel with optional cascade board ................................................................................................ 24

1. INTRODUCTION
The K control panel is fitted on the DE DIETRICH
DTG 320 S or DTG 320 Eco.NOx boilers.
2. GENERAL
2.1 Overview
The K control panel allows operating a 2-stage boiler
(DTG 320 S or DTG 320 Eco.NOx).
It may be fitted along with various optional features:
- MB2 domestic hot water priority module
or
- SV-matic weather compensator for 2-stage burners,
regulating the burner only or the burner with one mixing
valve, for heating only or for heating and domestic hot
water
or
- Cascade board (package AD 135). The cascade
board is used in installations where one or more
boilers (up to 9) fitted with K contol panels are
controlled by a boiler fitted with a Diematic-m Delta
control panel for cascaded operation of the entire
boilers system.
The connection between the boilers is carried out via
the 8 m long connecting cable supplied with the
AD 135 package.
- A 12 m long cable - package AD 134 - is available as
an option if required.
- Hour run meter(s) (package BG 40)
- Flue gas thermometer (package BP 28).
3
The electrical connections of the boiler shall
be performed by a qualified professionnal
only.
Strict compliance with these connecting,
starting up and operating instrucions is a
precondition for the correct operation of the
boiler.

2.2 Description
2 allures
1. Three-position switch Auto / Manual / STB TEST
1.1 Boilers fitted with a cascade board
(package AD 135)
11 8 9 1 10 13 6
AUTO: automatic position
This position allows automatic operation of the
installation under the control of the Diematic-m
Delta regulator.
Manual : manual position
The boiler disregards the commands coming
from the cascade board. It is regulated by the
boiler thermostats (item 5)
1.2 Other cases
- either in manual position : boilers not fitted
with a room thermostat or a SV-matic weather
compensator.
- or in AUTO position: boilers fitted with a room
thermostat or a SV-matic weather compensator.
The manual position does not allow
switching off the regulator.
STB Test: temporary action to test the safety
thermostat:
Press the TEST STB switch and set the pump shutoff
switch 2 to the "Summer" position.
2. Double switch Burner/Heating pump:
This double switch controls the burner and the
heating pump.
In the "Winter" position, both heating and
domestic hot water are operating.
In the "Summer" position, only domestic hot water
is operating (if a hot water tank is connected).
If the boiler is fitted with a SV-matic weather
compensator or is part of a cascaded installation,
both switches must be left on the Winter
position.
7
30
3
0
l
4
2
6A
14
3. Main ON/OFF switch
4. Locations for hour run meters
for the first and second stages (BG 40 option)
5. Boiler thermostats (adjustment range from 40°C to 90°C):
A factory-set stop limits the maximum temperature
to 75°C. This stop may be moved if necessary (see
chapter 5.1).
6. Stage 1 or stage 2 indicators:
These indicators only light up if the relevant
thermostat or the regulator require heating and if
the safety contact is closed.
7. Boiler thermometer
8. Location for the flue gas thermometer
(Optional package BP 28)
9. Safety thermostat with manual reset
(cut-off temperature: 110°C).
10. 4 A circuit-breaker
with delayed action and manual reset.
11. Location for the optional MB2 domestic hot
water priority module or SV-matic weather
compensator
13. Switch selecting the number of burner stages
14. Burner alarm indicator
5
4
8502N008

2.3 Operating principle
Boiler regulation
Boiler regulation may be performed:
- either by the boiler thermostats,
- or by the SV-matic weather compensator, if any
(optional),
- or by the DIEMATIC-m Delta control panel in case of
a cascaded installation.
If the boiler is fitted with a SV-matic weather compensator
or is controlled by a DIEMATIC-m Delta control
panel, the boiler temperature is modulated by the
regulator acting on the burner according to the outside
temperature. In this case, the boiler thermostats are set
to the maximum position. Operating safety is provided
by the safety thermostat with manual reset.
If the boiler is fitted with a SV-matic weather compensator
controlling a valve, the heating temperature is
modulated by the regulator acting on the burner and on
the motorised mixing valve according to the outside
temperature.
For a cascaded installation controlled by a boiler fitted
with a DIEMATIC-m Delta control panel, refer to the
instructions supplied with the DIEMATIC-m Delta control
panel.
5
Domestic hot water regulation
With the optional MB2 domestic hot water priority
module or the Type B SV-matic weather compensator:
When the domestic hot water is being reheated, the
burner and the load pump are started while the
heating pump is stopped. The boiler temperature is
then regulated by the limiter thermostat integrated in
the MB2 module or in the SV-matic weather compensator.
Once the need for hot water is met, the burner is
turned off. The load pump continues operating for 4
minutes after the burner stops (This delay is adjustable
from 30 sec to 15 min). This allows using the residual
heat accumulated in the heating elements and complete
heating the tank, especially in summer.
For a cascaded installation controlled by a boiler fitted
with a DIEMATIC-m Delta control panel, refer to the
instructions supplied with the DIEMATIC-m Delta control
panel.

3. ELECTRICAL CONNECTIONS
The electrical wiring has been thoroughly
checked in the factory and the internal
connections of the control panel must in no
case be modified.
3.1 Installation without optional features
All the connections shall be made to the terminal block provided
for that purpose in the boiler control panel.
Proceed as follows to open the control panel:
➀ Remove the boiler top panel.
➁ Unhook the intermediate front panel.
➂ Remove the upper front panel.
Make the connections as shown opposite.
1
7
8
6
9
5
4
3
7
8
6
9
5
4
3
2
3
8358N024
6
The electrical connections shall be made in compliance with
the instructions given in the electrical diagrams supplied with
the device and the guidelines provided in the manual.
The electrical connection must comply with the standards in
force. The device shall be powered by a circuit with an
omnipole switch with an opening distance exceeding 3
mm. Earthing shall comply with the standard in force.
POMPE DE RECYCLAGE
KESSELKREISPUMPE
SHUNT PUMP
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
L N L N L N L N L N
ALI
CS VA - TS VS
230V 50Hz
ALIMENTATION
STROMZUFÜHR
MAIN SUPPLY
6
VOYANT ALARME TS
TS ALARMLEUCHTE
TS ALARM INDICATOR
SAFETY CONTACT
VOYANT ALARME TS
TS ALARMLEUCHTE
TS ALARM INDICATOR
VANNE DE SECURITE
SICHERHEITSVENTIL
SAFETY VALVE
CONTACT DE SECURITE
SICHERHEITSKONTACT
➃ Remove the connection board cover.
➄ After removing the 4 fastening screws, tilt the front
cover to open the control panel.
➅ Fasten the cables to the board supporting plate using
cable clamps (6 cable clamps supplied in a bag) that
are to be assembled as shown opposite.
230V
Main supply
3x 0,75 mm 2 mini.
Heating
pump
3x 0,75 mm 2 mini.
230V 50Hz
ALI
CS VA-TS VS
L N L N L N
L N L N
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
4
5
8502N127
8502N086

3.2 Installation with optional MB2 domestic hot water module
4
3
2
1
5
6
7
8
3.2.1. Fitting the MB2 module
The MB2 module is to be fitted in the left-hand front
side of the control panel.
- Cut off the front panel skin using a cutter.
- Cut off the metal cover along the micro-joints using
pliers.
30
0
l
7
6A
8502N088
The setting and operating instructions for
the MB2 module can be found in the
manual supplied with the option.
8502N089
8502N090

3.2.2. Connections
- Connect module connector B to connector C marked
«MODULE ECS» (DHW MODULE) coming from the
boiler control panel, after removing bridge plug D.
- Connect the loading pump to the three-wire connecting
block at the rear of the module, taking care to connect
the phase (L), neutral (N) and earth ( ) wires correctly.
- Connect the tank sensor to the two-wire connecting
block marked «SB» at the rear of the module.
Then:
- Insert the probe E of the limiter thermostat in the boiler
pocket.
- Insert the tank sensor in the pocket of the domestic
hot water tank.
Note:
If the tank is already fitted with a thermostat, it will not
be used. Replace the tank thermostat bulb with the
tank sensor.
- Fasten the module onto the front of the control panel
with the help of the 2 Philips head screws of the
module.
- Proceed with the other connections.
8
DHW MODULE
MODULE E.C.S
BOILERVORRANGSCHALTUNG
SB
E
SB
C
MB
D
T
1
2 3 4 5 6
B
MINI MAXI
T=0
7
8
TEMPO
L N
MB
In the boiler
pocket
L N
Tank sensor Load pump
1
2 3 4 5 6
7
8
8502N091
8801N112
8502N092

All the connections shall be made to the terminal block provided
for that purpose in the boiler control panel.
Proceed as follows to open the control panel:
➀ Remove the boiler top panel.
➁ Unhook the intermediate front panel.
➂ Remove the upper front panel.
Make the connections as shown opposite.
1
The very low voltage sensor cables must
be separated from the 230 V main supply
cables in order to avoid electromagnetic
interference problems.
Inside the boiler
- Boilers with one cable channel:
Place the 230 V main supply cables on one side of the
cable channel and the sensor cables on the other. The
cables shall be held in place on either side using
plastic ties.
- Boilers with two cable channels:
Place the 230 V main supply cables in one cable
channel and the sensor cables in the other. The cables
shall be held in place using plastic ties.
7
8
6
9
5
4
3
7
8
6
9
5
4
3
2
3
8358N024
9
POMPE DE RECYCLAGE
KESSELKREISPUMPE
SHUNT PUMP
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
L N L N L N L N L N
ALI
CS VA - TS VS
230V 50Hz
ALIMENTATION
STROMZUFÜHR
MAIN SUPPLY
6
VOYANT ALARME TS
TS ALARMLEUCHTE
➃ Remove the connection board cover.
➄ After removing the 4 fastening screws, tilt the front
cover to open the control panel.
➅ Fasten the cables to the board supporting plate using
cable clamps (6 cable clamps supplied in a bag) that
are to be assembled as shown opposite.
230V
Main supply
3x 0,75 mm 2 mini.
Outside the boiler
TS ALARM INDICATOR
SAFETY CONTACT
VOYANT ALARME TS
TS ALARMLEUCHTE
TS ALARM INDICATOR
VANNE DE SECURITE
SICHERHEITSVENTIL
SAFETY VALVE
CONTACT DE SECURITE
SICHERHEITSKONTACT
Heating
pump
3x 0,75 mm 2 mini.
230V 50Hz
ALI
CS VA-TS VS
L N L N L N
L N L N
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Use 2 cable ducts or channels with a minimum
distance of 10 cm between them.
Failure to comply with these instuctions may lead
to interference and regulator malfunction, or even
damage the electronic circuitry.
4
5
8502N127
8502N086

3.3 Installation with optional SV-matic weather compensator
1,5
1
0,5
2 2,5
3
3,5
1
0,5
1,5 2
2,5
3
3,5
50
40
60
30
20 80
14
2
2
14
26
1 2 3 4 5 6 7
1...7 H
Prog.
3.3.1 Fitting the SV-matic weather compensator
OFF
ON
M
R
232 DB
The SV-matic weather compensator is to be fitted in the
left-hand front side of the control panel.
- Cut off the front panel skin using a cutter.
- Cut off the metal cover along the micro-joints using
pliers.
30
0
l
10
6A
8502N093
Optionnal additional wiring (package AV 106)
is required with the SV-matic weather
compensator.
8502N089
8502N090

3.3.2 Connections
All the connections shall be made to the terminal block provided
for that purpose in the boiler control panel.
Proceed as follows to open the control panel:
➀ Remove the boiler top panel.
➁ Unhook the intermediate front panel.
➂ Remove the upper front panel.
Installing the additional wiring package AV 106
1
- With the help of the two screws B supplied for that purpose,
fasten the the connecting strip support A (supplied
with the additional wiring package AV 106) in the location
provided for that purpose in the control panel.
- Plug the 9-pin connector D of the cable form into
connector E, marked «REGULATION» (REGULA-
TOR),which is prepared in the control panel, after
removing bridge plug C.
7
8
6
9
5
4
3
7
8
6
9
5
4
3
2
3
8358N024
11
➃ Remove the connection board cover.
➄ After removing the 4 fastening screws, tilt the front
cover to open the control panel.
➅ Fasten the cables to the board supporting plate using
cable clamps (6 cable clamps supplied in a bag) that
are to be assembled as shown opposite.
C
E
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
L N L N L N L N L N
ALI
CS VA - TS VS
230V 50Hz
D
POMPE DE RECYCLAGE
KESSELKREISPUMPE
SHUNT PUMP
ALIMENTATION
STROMZUFÜHR
MAIN SUPPLY
6
VOYANT ALARME TS
TS ALARMLEUCHTE
TS ALARM INDICATOR
SAFETY CONTACT
VOYANT ALARME TS
TS ALARMLEUCHTE
TS ALARM INDICATOR
VANNE DE SECURITE
SICHERHEITSVENTIL
SAFETY VALVE
CONTACT DE SECURITE
SICHERHEITSKONTACT
RED
A
B
4
5
8502N127
BLUE
8502N094

Carry out the electrical connections.
N L N
AF
SONDE SONDE SONDE SONDE
COMMANDE A DISTANCE
FERNBEDIENUNG
1 2 3 4
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
8502N095
Connecting strip for the connection of the sensors
and the controls of the SV-matic weather compensator.
Refer to the instructions supplied with the regulator and
any remote control used.
Inside the boiler
The very low voltage sensor cables must
be separated from the 230 V main supply
cables in order to avoid electromagnetic
interference problems.
- Boilers with one cable channel:
Place the 230 V main supply cables on one side of the
cable channel and the sensor cables on the other. The
cables shall be held in place on either side using
plastic ties.
- Boilers with two cable channels:
Place the 230 V main supply cables in one cable
channel and the sensor cables in the other. The cables
shall be held in place using plastic ties.
- Bring the blue and red connectors out through the
opening in the control panel.
- Close the control panel.
- Plug both connectors onto the back of the regulator:
● blue connector in the blue socket,
● red connector in the red socket.
- Push the casing into the front of the control panel and
fasten it with the two plastic screws (1/4 turn clockwise)
located on the front side of the regulator.
12
230V
Main supply
3x 0,75 mm 2 mini.
Outside the boiler
3x 0,75 mm 2 mini.
230V 50Hz
ALI
CS VA-TS VS
L N L N L N
L N L N
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
8502N086
Use 2 cable ducts or channels with a minimum
distance of 10 cm between them.
Failure to comply with these instuctions may lead
to interference and regulator malfunction, or even
damage the electronic circuitry.
BLUE
Heating
pump
2,5
1,0
3
0,5
3,5
1,5 2
2,5
1,0
3
0,5
3,5
14 26
20
14
50
40
60
30
20 80
8
1 2 3 4 5 6 7
1...7 - +
Prog
RED
331 DB
1/4
8502N096

3.4 Installation with optional cascade board
Refer to the instructions supplied with the cascade board
(package AD 135).
3.5 Connecting the safety thermostat alarm indicator
Safety thermostat
alarm indicator
2x 0,75 mm 2 mini.
230V 50Hz
ALI
CS VA-TS VS
L N L N L N
L N L N
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
8502N097
3.6 Connecting the hour run meter(s) (package BG 40)
One or two optional hour run meters (stages 1 and 2)
may be fitted to the front of the control panel.
Proceed as follows:
- Cut the cover off with a cutter along the edges of the
coloured rectangle.
- Pull out the 2 wires prepared in the control panel.
- Connect the wires to the hour run meter (the wires
are interchangeable).
- Clip the hour run meter into the control panel.
If the burner used is a one-stage burner, the counter
displays the burner operating time.
If the burner used is a two-stage burner, the counters
display the operating time of each stage.
13
7
6 5 4 3
9 8
2
1
7
6 5 4 3
9 8
2
1
8502N098

3.7 Connecting the flue gas thermometer (package BP 28)
An optional flue gas thermometer may be fitted to the
front of the control panel.
Proceed as follows:
- Cut the cover off with a cutter along the edges of the
coloured rectangle.
- Clip the thermometer into the opening.
- Bring the sensor to the back of the boiler via the cable
channel and insert it in the flue gas pipe.
3.8 Connecting the burner
Connect the following connectors below the control panel:
1. Ignition device circuit
2. Gas pressure switch
3. Gas valves circuit
4. Leak proofing system (option DP 92)
The leak proofing system DP 92 is obligatory
in Austria on boilers DTG 320-20
(Nominal power input ≥ 350 kW)
14
7
6 5 4 3
9 8
2
1
1 2 3
4
7
6 5 4 3
9 8
2
1
8502N099
8358N013

4. SKELETON DIAGRAMS
4.1 Skeleton diagram of installations without optional features
VA-SCS
17
1b
1
BPR-VA
SI
1a
1a
ZG
4 3
7 2
1
1
1a
L
1
BA
DGAI 73
SCS
5 7
1 2
X13 5 4 X2 10 X3
2
1
TAF
1
1
3
1
6
6
5
5
2
2 4
FA
2
ECS
8
6
RG
CA
7
8
CCE
6
CCE
DJ4A TI
1 2 1 3
1
1 TCH1
CCE 2 PSG
ECS
3 1
6
7
RG 3 2
1
9
P
9 7
ZT
1
1
1a 1b
ZEH
2
1a 1b
CA ECS CA
CCE
11
12 4 1
5
CA
CA
6
1
4
1
9
1
TCH2
2
7
4
2
2
9
8
3
2
ZT
2a 2b
1a
RG
4 5
TS 1
3
2
BA 10
3 8
ZB
1
14
CS
2b
CA
13
15
15
4 5 6
(B)
1 1 4
VS VG VP
1 2
1
11
1
7 1 6
BA
CO
1a
VB2 CH2
14
1
BA
4
1
CH1
VB1
1
1
h
h
VS
2
2
5
2
1b
5
2
2
2
A
2
P2
2
7 8 9
15
2a
ZEH
2
7 BA BA 12
1a
VA-TS
1b
CCE**
6 BA
2 BA 13
2 4
TI
BA
5
ZG
2a 2
N
2
BA
8358N055
VP Main valve
VS Safety valve
ZB Burner switch
ZEH Summer/Winter switch
ZG Main switch
ZT Test switch
TCH1 Boiler thermostat
1st stage
TCH2 Boiler thermostat
2nd stage
TI Isolating transformer
TS Safety thermostat
VA-TS Safety thermostat alarm
indicator
VB1 Stage 1 operating indicator
VB2 Stage 2 operating indicator
VG Gas valve
ECS Domestic hot water
FA EMI suppressor
L Phase
N Neutral
P2 Shunt pump
PSG Gas pressure switch
R Relay
RG Regulator
SCS Safety control box
SI Ionisation probe
TAF Draught diverter thermostat
A Heating pump
AE Electrical ignition device
B Burner
BA Connecting strip
BPR-VA Reset button and
burner alarm indicator
CA Cascade
CCE Leak proofing system
CO Flue damper
CS Safety contact
Dj4A 4 A circuit-breaker

4.2 Skeleton diagram with optional domestic hot water priority module
VA-SCS
17
1b
1
BPR-VA
SI
1a
1a
ZG
4 3
7 2
1
1
1a
L
1
BA
DGAI 73
SCS
5 7
1 2
X13 5 4 X2 10 X3
2
1
TAF
1
1
3
1
6
6
5
5
2
2 4
FA
2
ECS
8
6
RG
CA
7
8
CCE
6
CCE
DJ4A TI
1 2 1 3
1
1 TCH1
CCE 2 PSG
ECS
3 1
6
7
RG 3 2
1
9
P
9 7
ZT
1
1
1a 1b
ZEH
2
1a 1b
CA ECS CA
CCE
11
12 4 1
5
CA
CA
6
1
4
1
9
1
TCH2
2
7
4
2
2
9
8
3
2
ZT
2a 2b
1a
RG
4 5
TS 1
3
2
BA 10
3 8
ZB
1
14
CS
2b
13
15
4 5 6
(B)
1 1 4
VS VG VP
1 2
1
11
1
7 1 6
BA
CO
1a
VB2 CH2
14
BA
4
1
1
1
VS
2
2
5
1b
5
2
2
2
A
2
P2
2
7 8 9
15
2a
ZEH
2
7 BA BA 12
1a
VA-TS
1b
CCE**
6 BA
2 BA 13
16
CA
1
CH1
VB1
h
h
2
BA
5
2 4
TI
ZG
2a 2
N
2
BA
8358N058
VP Main valve
VS Safety valve
ZB2 Burner switch
ZEH Summer/Winter switch
ZG Main switch
ZT Test switch
TCH1 Boiler thermostat
1st stage
TCH2 Boiler thermostat
2nd stage
TI Isolating transformer
TS Safety thermostat
VA-TS Safety thermostat alarm
indicator
VB1 Stage 1 operating indicator
VB2 Stage 2 operating indicator
VG Gas valve
ECS Domestic hot water
FA EMI suppressor
L Phase
N Neutral
P2 Shunt pump
PSG Gas pressure switch
RG Regulator
SCS Safety control box
SI Ionisation probe
TAF Draught diverter thermostat
A Heating pump
AE Electrical ignition device
B Burner
BA Connecting strip
BPR-VA Reset button and
burner alarm indicator
CA Cascade
CCE Leak proofing system
CO Flue damper
CS Safety contact
Dj4A 4 A circuit-breaker

4.3 Skeleton diagram with optional regulator
VA-SCS
17
1b
1
BPR-VA
SI
1a
1a
ZG
4 3
7 2
1
1
1a
L
1
BA
DGAI 73
SCS
5 7
1 2
X13 5 4 X2 10 X3
2
1
TAF
1
1
3
1
6
6
5
5
2
2 4
FA
2
ECS
8
6
RG
CA
7
8
CCE
6
CCE
DJ4A TI
1 2 1 3
1
1 TCH1
CCE 2 PSG
ECS
3 1
6
7
RG 3 2
1
9
P
9 7
ZT
1
1
1a 1b
ZEH
2
1a 1b
CA ECS CA
CCE
11
12 4 1
5
CA
CA
6
1
4
1
9
1
TCH2
2
7
4
2
2
9
8
3
2
ZT
2a 2b
1a
RG
4 5
TS 1
3
2
BA 10
3 8
ZB
1
14
CS
2b
17
CA
13
15
4 5 6
(B)
1 1 4
VS VG VP
1 2
1
11
1
7 1 6
BA
CO
1a
VB2 CH2
14
1
BA
4
1
CH1
VB1
1
1
h
h
VS
2
2
5
2
1b
5
2
2
2
A
2
P2
2
7 8 9
15
2a
ZEH
2
7 BA BA 12
1a
VA-TS
1b
CCE**
6 BA
2 BA 13
2 4
TI
BA
5
ZG
2a 2
N
2
BA
8358N057
ZB2 Burner switch
ZEH Summer/Winter switch
ZG Main switch
ZT Test switch
* Eco.NOx Version
** S Version
TCH2 Boiler thermostat
2nd stage
TI Isolating transformer
TS Safety thermostat
VA-TS Safety thermostat alarm
indicator
VB1 Stage 1 operating indicator
VB2 Stage 2 operating indicator
VP1 Stage 1 main valve
VP2 Stage 2 main valve
VS Safety indicator
CS Safety contact
Dj4A 4 A circuit-breaker
ECS Domestic hot water
P2 Shunt pump
PSG Gas pressure switch
RG Regulator
SCS Safety control box
SCS2 Ionisation measurement
TAF Draught diverter thermostat
TCH1 Boiler thermostat
1st stage
A Heating pump
AE Electrical ignition device
B Burner
B2 Burner 2nd stage
BPR-VA Reset button and
burner alarm indicator
CA Cascade
CCE Leak proofing system
CH1 Hour run meter 1st stage
CH2 Hour run meter 2nd stage
CO Flue damper

4.4 Skeleton diagram with optional cascade board
VA-SCS
17
1b
1
BPR-VA
SI
1a
1a
ZG
4 3
7 2
1
1
1a
L
1
BA
DGAI 73
SCS
5 7
1 2
X13 5 4 X2 10 X3
2
1
TAF
1
1
3
1
6
6
5
5
2
2 4
FA
2
ECS
8
6
RG
CA
7
8
CCE
6
CCE
DJ4A TI
1 2 1 3
1
1 TCH1
CCE 2 PSG
ECS
3 1
6
7
RG 3 2
1
9
P
9 7
ZT
1
1
1a 1b
ZEH
2
1a 1b
CA ECS CA
CCE
11
12 4 1
5
CA
CA
6
1
4
1
9
1
TCH2
2
7
4
2
2
9
8
3
2
ZT
2a 2b
1a
RG
4 5
TS 1
3
2
BA 10
3 8
ZB
1
14
CS
2b
18
CA
13
15
1
11
1
7 1 6
BA
CO
1a
VB2 CH2
14
1
BA
4
1
CH1
VB1
1
1
h
h
(B) 4 5 6
1 1 4
VS VG VP
1 2
2 2 5
VS
2
2
5
2
1b
2
A
2
P2
2
7 8 9
15
2a
ZEH
2
7 BA BA 12
1a
VA-TS
1b
CCE**
6 BA
2 BA 13
2 4
TI
BA
5
ZG
2a 2
N
2
BA
8358N056
VP Main valve
VS Safety valve
ZB Burner switch
stage
ZEH Summer/Winter switch
ZG Main switch
ZT Test switch
TCH1 Boiler thermostat
1st stage
TCH2 Boiler thermostat
2nd stage
TI Isolating transformer
TS Safety thermostat
VA-TS Safety thermostat alarm
indicator
VB1 Stage 1 operating indicator
VB2 Stage 2 operating indicator
VG Gas valve
ECS Domestic hot water
FA EMI suppressor
L Phase
N Neutral
P2 Shunt pump
PSG Gas pressure switch
RG Regulator
SCS Safety control box
SI Ionisation probe
TAF Draught diverter thermostat
A Heating pump
AE Electrical ignition device
B Burner
BA Connecting strip
BPR-VA Reset button and
burner alarm indicator
CA Cascade
CCE Leak proofing system
CO Flue damper
CS Safety contact
Dj4A 4 A circuit-breaker

5. START-UP AND OPERATION
5.1 Control panel without optional features
The initial start-up shall be performed by
a qualified professionnal.
Before turning the boiler on, make sure that the
installation is filled with water.
Carry out the start-up operations in the order
indicated below:
● Boiler temperature regulation by means of the
thermostats
Set the boiler thermostats 5 to the selected position.
In case of a two-stage burner, the stage 2 thermostat
must always be set to a value which is approximately 5°C
less than that of the stage 1 thermostat.
If required, move the maximum temperature stop as shown
below.
Moving the thermostat stop:
The stop is factory-set to limit the maximum temperature
to 75°C. To move the stop, proceed as follows:
- Pull the thermostat button out.
- Remove the stop using pliers.
- Place the stop in the hole corresponding to the
desired higher temperature (maximum 90°C).
30
0
l
9 1
19
6A
3 2 5
8502N100
If there is no regulator, it is advised never
to set the boiler thermostats below mark
4 (approximately 40°C) in order to avoid
any risk of combustion products condensing
on the walls of the boiler.
● Set switch 1 to the manual position .
● regulator in heating cabinet
Refer to the instructions supplied with this regulator.
● Make sure that safety thermostat 9 is ready. To do
so, unscrew the hexagonal cap and press the reset
button with a screwdriver.
● Set the burner and heating pump switches 2 to the
Winter position.
● Set the main On/off switch 3 to the On position.
9 8 7 6 5 4 3 2 1
40-
35-
50-
45-
30-
50+
90+
70+
75+
80+
9 8 7 6 5 4 3 2 1
8358N023

5.2 Control panel with optional MB2 domestic hot water module
4
3
2
1
12
5
6
7
8
The initial start-up shall be performed by
a qualified professionnal.
Before turning the boiler on, make sure that the
installation is filled with water.
Carry out the start-up operations in the order
indicated below:
● Boiler temperature regulation by means of the
thermostats
Set the boiler thermostats 5 to the selected position.
In case of a two-stage burner, the stage 2 thermostat
must always be set to a value which is approximately 5°C
less than that of the stage 1 thermostat.
If required, move the maximum temperature stop as shown
on page 17.
● Set button 12 of the module to the desired value.
Position 6 (approximately 60°C) is recommended.
This value always must be less than the stage 2
boiler thermostat setting.
The setting and operating instructions for the
MB2 module can be found in the manual
supplied with the option.
30
0
l
9 1
20
6A
3 2 5
● Set switch 1 to the AUTO position.
8502N087
● Make sure that safety thermostat 9 is ready. To do
so, unscrew the hexagonal cap and press the reset
button with a screwdriver.
● Set the burner and heating pump switches 2 to the
Winter position.
● Set the main On/off switch 3 to the On position.

5.3 Control panel with optional SV-matic weather compensator
1,5
1
0,5
2 2,5
3
3,5
1
0,5
1,5 2
2,5
3
3,5
50
40
60
30
20 80
12
14
2
2
14
26
1 2 3 4 5 6 7
1...7 H
Prog.
OFF
ON
M
R
232 DB
The initial start-up shall be performed by
a qualified professionnal.
Before turning the boiler on, make sure that the
installation is filled with water.
Carry out the start-up operations in the order
indicated below:
● Set the boiler thermostats 5 to the maximum
position.
If required, move the maximum temperature stop as
shown on page 17.
● If an independent hot water tank is used, set button
12 to the desired temperature.
Position 60 (approximately 60°C) is recommended.
The domestic hot water temperature set must always
be less than the boiler operating temperature during
hot water loading.
Carry out the settings of the SV-matic weather
compensator as per the setting and operating
instructions supplied with the unit.
30
0
l
9 1
21
6A
3 2 5
● Set switch 1 to the AUTO position.
8502N101
● Make sure that safety thermostat 9 is ready. To do
so, unscrew the hexagonal cap and press the reset
button with a screwdriver.
● Set the burner and heating pump switches 2 to the
Winter position.
● Set the main On/off switch 3 to the On position.

5.4 Control panel with cascade board
The initial start-up shall be performed by
a qualified professionnal.
Before turning the boiler on, make sure that the
installation is filled with water.
Carry out the start-up operations in the order
indicated below:
● Set the boiler thermostats 5 to the maximum
position.
If required, move the maximum temperature stop as shown
on page 17.
● Set switch 1 to the AUTO position.
● Make sure that safety thermostat 9 is ready. To do
so, unscrew the hexagonal cap and press the reset
button with a screwdriver.
● Set the burner and heating pump switches 2 to the
Winter position.
● Set the main On/off switch 3 to the On position.
30
0
l
9 1
22
6A
3 2 5
8502N100

Fitter :
Servicing company :
BP 30 - 57, rue de la Gare
F-67580 MERTZWILLER
+ 33/3 88 80 27 00 - Fax : + 33/3 88 80 27 99
N° IRC : 347 555 559 RCS STRASBOURG
In the interest of customers, DE DIETRICH THERMIQUE are continuously endeavouring to make improvements in product quality.
All the specifications stated in this document are therefore subject to change without notice.
AD 14 b