Basic Rooftop Focus Guide.pdf - ProLon

Focus Guide 

Basic Rooftop Controller 

Configuration guide for ProLon Focus 

Guide Focus Français 

software 

REV 5.4.0 

www.prolon.net 

info@prolon.net



Régulateur de climatiseur de base 

Table of Contents 

1 Basic Rooftop Controller Icon ............................................................................................. 4 

1.1 Icon Data ........................................................................................................................ 4 

1.2 Icon Colors ..................................................................................................................... 5 

1.3 Icon Right-Click .............................................................................................................. 6 

2 Basic Rooftop Controller Configuration ............................................................................. 7 

2.1 Config Menu ................................................................................................................... 7 

2.1.1 Basic Rooftop Home Screen ..................................................................................... 7 

2.1.1.1 Displayed Parameters ....................................................................................... 8 

2.1.1.2 Icon Quick Jump ............................................................................................... 8 

2.1.1.3 Icon Manual Override ........................................................................................ 9 

2.1.1.4 “Resume Normal” Button ................................................................................ 10 

2.1.2 Display Configuration ............................................................................................... 12 

2.1.3 Fan Configuration .................................................................................................... 14 

2.1.3.1 Unoccupied Mode ........................................................................................... 14 

2.1.3.2 Override mode................................................................................................. 15 

2.1.3.3 Intermittent ...................................................................................................... 15 

2.1.4 Cooling Configuration .............................................................................................. 16 

2.1.4.1 Cooling Setpoints ............................................................................................ 17 

2.1.4.2 Operation ......................................................................................................... 18 

2.1.4.3 Analog Cooling ................................................................................................ 18 

2.1.5 Heating Configuration .............................................................................................. 20 

2.1.5.1 Digital Output 4................................................................................................ 20 

2.1.5.2 Analog Output 1 .............................................................................................. 21 

2.1.5.3 Preheating ....................................................................................................... 22 

2.1.6 Limits ........................................................................................................................ 24 

2.1.6.1 Return Air Temperature .................................................................................. 24 

2.1.6.2 Outside Air Temperature ................................................................................. 25 

2.1.6.3 Supply Air Temperature .................................................................................. 25 

2.1.7 Priority ...................................................................................................................... 27 

2.1.7.1 Priority Mode ................................................................................................... 28 

2.1.8 Calibration ................................................................................................................ 29 

2.1.9 Device Properties ..................................................................................................... 31 

2.2 Network Menu .............................................................................................................. 33 

2.2.1 Slave List ................................................................................................................. 33 

2.2.1.1 Buttons ............................................................................................................ 34 

2.2.2 Math Functions ........................................................................................................ 35 

2.2.3 COM Port Settings ................................................................................................... 38 

2.2.4 Other ........................................................................................................................ 40 

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Table of Figures 

Figure 1.1.1: Typical Master icons ................................................................................................... 4 

Figure 1.2.1: Grey icon .................................................................................................................... 5 

Figure 1.2.2: Green icon .................................................................................................................. 5 

Figure 1.2.3: Orange icon ................................................................................................................ 5 

Figure 1.2.4: Blue icon ..................................................................................................................... 5 

Figure 1.3.1: Icon right-click for Master ........................................................................................... 6 

Figure 2.1.1: Basic Rooftop home screen ....................................................................................... 7 

Figure 2.1.2: Icon quick jump example ............................................................................................ 9 

Figure 2.1.3: Manual override example ........................................................................................... 9 

Figure 2.1.4: Override example ..................................................................................................... 10 

Figure 2.1.5: “Resume Normal” button .......................................................................................... 10 

Figure 2.1.6 Display configuration screen ..................................................................................... 12 

Figure 2.1.7: Fan configuration screen .......................................................................................... 14 

Figure 2.1.8: Cooling configuration screen .................................................................................... 16 

Figure 2.1.9: Heating configuration screen ................................................................................... 20 

Figure 2.1.10: Limits configuration screen .................................................................................... 24 

Figure 2.1.11: Priority configuration screen ................................................................................... 27 

Figure 2.1.12: Calibration configuration screen ............................................................................. 29 

Figure 2.1.13: Device properties screen ....................................................................................... 31 

Figure 2.2.1: Slave list configuration screen ................................................................................. 33 

Figure 2.2.2: Math functions configuration screen ........................................................................ 35 

Figure 2.2.3: COM Port configuration screen ................................................................................ 38 

Figure 2.2.4: Other configuration screen ....................................................................................... 40 

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1 Basic Rooftop Controller Icon 

When a Basic Rooftop Controller is added to a system in the Systems View, it receives 

its own master icon. The master icon displays data about the Basic Rooftop Controller 

device it represents, and this data is updated regularly. You can open the configuration 

screen for a Basic Rooftop Controller by double-clicking on its icon or right-clicking it and 

choosing the “Configure” option. Values are set to “N/A” if the Controller is offline. 

Figure 1.1.1: Rooftop Icon 

It is important to note that when a master icon is created in a system, the icon 

representing that system in the Network View is replaced by that master icon itself. To 

view the system associated with the master icon, right-click it and choose the “View 

System” option. 

1.1 Icon Data 

• Supply Temp: The actual temperature in the duct. Will display “N/A” (not applicable) if 

no supply temperature sensor is attached or if the network does not supply a reading. 

• Return Temp: The temperature of the return air. Will display “N/A” if no return air 

temperature sensor is attached or if the master is offline. 

• Outside Temp: The outside temperature. Will display “N/A” if no outside air 

temperature sensor is attached. 

• Math: The values of the selected math functions. The values of the selected math 

functions. The displayed math functions can be changed in the Display Configuration 

page (p.12). Only the first two selected functions will be displayed. 

• Status Icon: An icon is always visible next to the ProLon logo, indicating if this master 

is in occupied or unoccupied mode. If the icon is lit up in orange, then the master is in 

occupied mode. If the icon is grey, the master is in unoccupied mode. The icon will 

be grey when working offline. 

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1.2 Icon Colors 

The master icon changes color depending on the master’s status and current actions. 

• Grey: The master icon is grey when offline or if data is not being received. 

Figure 1.2.1: Grey icon 

• Green: The master icon is green when no heating or cooling actions are being taken. 

Figure 1.2.2: Green icon 

• Red: The master icon is red when the master is heating. 

Figure 1.2.3: Orange icon 

• Blue: The master icon is blue when the master is cooling. 

Figure 1.2.4: Blue icon 

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1.3 Icon Right-Click 

At any time you can right-click the master icon to access a list of useful functions. 

Figure 1.3.1: Icon right-click for Master 

• Configure: This opens the configuration screen for the master (same as double-clicking 

the icon). 

• Rename: Lets you rename the master. Names are limited to 16 characters. 

• Delete: Removes the master from your network. 

• Get List: Causes the master to automatically retrieve the list of slaves attached to its 

system. A new slave icon is created for all slaves found on the list that do not already 

appear on the icon screen. This function is unavailable offline. 

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2 Basic Rooftop Controller Configuration 

To view the configuration of a Basic Rooftop Controller in detail, double-click on its icon 

to see its configuration screen. Use the menus in the top left corner to navigate between 

the different sections, or simply double-click any item in the Basic Rooftop Controller 

Home screen to transfer you to its corresponding page. (See Icon Quick Jumps for more 

details, p.8). 

2.1 Config Menu 

2.1.1 Basic Rooftop Home Screen 

Figure 2.1.1: Basic Rooftop home screen 

This screen shows the status of all inputs and outputs in the Basic Rooftop device. All 

values will be “N/A” (Not Applicable) if offline. 

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2.1.1.1 Displayed Parameters 

• Outside Temp: The outside temperature. Will display “N/A” if no outside air 


• Return Temp: The temperature of the return air. Will display “N/A” if no return air 


• Supply Temp: The actual temperature in the duct. Will display “N/A” if no supply 

temperature sensor is attached or if the network does not supply a reading. 

• Fan: An icon representing the state of the fan can be seen in the middle of the 

drawing. When the fan is ON, the fan blades rotate, the outside damper is open and 

arrows appear, indicating airflow. When the fan is OFF, the fan blades are stopped, 

the outside damper is closed and there are no more arrows. Set to OFF when offline. 

• Cooling: An icon showing two cooling coils represents the cooling action being taken 

by the unit. Each coil represents a stage of cooling. The first stage of cooling is the 

coil on the right and the second stage is the coil on the left. A cooling stage is ON if it 

is coloured blue and OFF when it is grey. Both stages are set to OFF when offline. 

• Heating: An icon of an electric coil represents the heating action being taken by the 

unit. The icon’s color represents the intensity of the heating action being taken. The 

Icon is grey when there is no heating. 

Status 

The value under the icon is the Total Heat. The Total Heat is calculated with the 

values of Outputs 4 and 5. When Output 4 is set to “Heating Stage”, its activity will 

represent half of the Total Heat, while Output 5 will represent the other half. If an 

output is not contributing to any heating action, its value will not count in the Total 

Heat calculation. 

• Cooling: The state of the cooling outputs. Indicates the highest stage that is currently 

ON. 

• Heating: The state and function of Output 4, as well as the value in percentage of 

Output 5. Output 4 can be a heating stage, preheat permission or be turned off. 

• Occupancy: Shows the current occupancy state of the unit (occupied or unoccupied, 

accompanied by a representative icon). 

Math Functions 

Display the current calculated values of each math function, as defined in the Math 

Functions screen (see p.35). Set to zero when offline. 

2.1.1.2 Icon Quick Jump 

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Certain items in the Home screen will direct you to its corresponding configuration screen 

when they are double-clicked. A red contour will surround the object if this option is 

available, with the exception of the Occupancy section. 

Figure 2.1.2: Icon quick jump example 

The following is a list of the clickable objects and their corresponding destination: 

Items 

Outside Temp Sensor 

Return Temp Sensor 

Supply Temp Sensor 

Cooling Coils 

Fan 

Heating Coil 


Quick Jump 

Limits 

Limits 

Limits 

Cooling Configuration 

Fan Configuration 

Heating Configuration 


Please note that if the advanced password is enabled, you will not be able to double-click 

on any objects. 

2.1.1.3 Icon Manual Override 

Certain components of the Basic Rooftop device can be overridden. To use this feature, 

right-click on the icon of the component you wish to override. A pop-up menu will appear 

if this feature is available. 

Figure 2.1.3: Manual override example 

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• Normal: Selecting the “Normal” button will revert the selected item to its normal 

behaviour. Any override still applied to this object will be disabled. 

• Override: Selecting the “Override” button will allow the user to manually override the 

selected object until normal mode is resumed. 

The following is a list of all items that can be overridden: 

Cooling Stages 

Output 4 

Output 5 

Fan 

Occupancy 

If a master is overridden to “unoccupied” and one of the slaves is then overridden back to 

“occupied”, the master will assume an occupied state as long as the slave remains 

overridden. The other slaves will remain unoccupied. 

Please note that cooling and heating overrides still respect the temperature limits, 

minimum time delays and fan activity. The fan status and the occupancy can be 

overridden at all times. 

When an override is applied to an object, a yellow contour appears around its icon and 

any associated text starts to flash. For example, in the adjacent picture, the fan is 

overridden. 

Figure 2.1.4: Override example 

Please note that if the advanced password is enabled, or if you are offline, you will not be 

able to override any objects. All overrides are removed when the device is reset or loses 

power. 

2.1.1.4 “Resume Normal” Button 

Figure 2.1.5: “Resume Normal” button 

This button allows the Basic Rooftop device to return to its fully automated behaviour. All 

overrides previously applied to the device will be disabled. However, before any action is 

taken, a dialog box will appear to confirm your choice. 

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2.1.2 Display Configuration 

Figure 2.1.6 Display configuration screen 

This screen lets you customize the graphical display of the Home screen. 

• Sensors: This section lets you choose whether or not Focus will display the 

corresponding temperature sensors. 

• Filter: Lets you choose if Focus displays the air filter. 

• Fan: Lets you choose if Focus displays the fan. 

• Math Functions: Lets you select which of the five math functions Focus should display 

in the home screen. The first two will also be displayed on the Rooftop’s main icon. 

• Overrides: This option lets you choose the override mode. By default, manual 

overrides are blocked if the safety of the system is at risk, for example, by blocking a 

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manual override to activate cooling because the fan is stopped or if it is too cold in 

the supply. However, with this option, absolute overrides can be enabled, bypassing 

all limits and restrictions, and therefore should only be used for testing. 

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2.1.3 Fan Configuration 

Figure 2.1.7: Fan configuration screen 

This screen lets you configure the operation of the fan when in unoccupied mode and in 

override mode. The Basic Rooftop will enter u#noccupied mode when indicated by its 

attached timer. The Basic Rooftop will enter override mode from unoccupied mode after 

one of its slaves is overridden by pushing the override button on its thermostat. In 

occupied mode however, the fan is always ON. 

2.1.3.1 Unoccupied Mode 

• Fan OFF when unoccupied: When this is selected, the fan will always be OFF in 

unoccupied mode. 

• Fan INTERMITTENT when unoccupied: When this is selected, the fan will go ON if 

one of the conditions in the “Intermittent” section is met (see below). 

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• Fan ON when unoccupied: When this is selected, the fan will always be ON in 

unoccupied mode. 

2.1.3.2 Override mode 

• Fan OFF when overridden: When this is selected, the fan will always be OFF in 

override mode. 

• Fan INTERMITTENT when overridden: When this is selected, the fan will go ON if one 

of the conditions in the “Intermittent” section is met (see below). 

• Fan ON when overridden: When this is selected, the fan will always be ON when 

overridden. 

2.1.3.3 Intermittent 

• Fan ON if heating demand is greater than: Select this if you want the fan to turn on 

according to a demand of heating. The demand is provided by one of the five math 

functions (defined in the Math Functions screen p.35) chosen in Demand Source. 

The fan will be ON when the heating demand is greater than the value in the 

adjacent box. 

Units MIN MAX Default 

% 0 100 10 

• Fan ON if cooling demand is greater than: Select this if you want the fan to turn ON 

according to a demand of cooling. The demand is provided by one of the five math 

functions (defined in the Math Functions configuration screen p.35) chosen in 

Demand Source. The fan will be ON when the cooling demand is greater than the 

value in the adjacent box. 


% 0 100 10 

• Minimum fan cycle time: This is the minimum amount of time that the fan will stay ON 

once activated. Even if the demand drops below the setpoint, the fan remains ON 

until the time delay is met. After this time, the fan will turn OFF as soon as the 

demand drops under the setpoint. 


Minutes 0 120 15 

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2.1.4 Cooling Configuration 

Figure 2.1.8: Cooling configuration screen 

• Number of Cooling Stages: You can select the number of cooling stages used by the 

Basic Rooftop. 

• NONE: The rooftop controller will not perform any cooling actions. Outputs 2 

and 3 are inert. Cooling Setpoints section below is completely disabled. 

• 1: Only the first stage of cooling is enabled (Output 2). Output 3 is inert. Only 

the first stage in the Cooling Setpoints section below is enabled. 

• 2: Stages 1 and 2 are enabled (Output 2 and 3). The two first stages in the 

Cooling Setpoints section below are enabled. This is the default setting. 

• 3*: Stages 1 to 3 are enabled (Output 2). The three first stages in the Cooling 

Setpoints section below are enabled. 

• 4*: All cooling stages are enabled (Output 2). The Cooling Setpoints section 

below is completely enabled. 

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* When stages 3 and/or 4 are enabled, a DMUX-4J interface must be installed on Output 

2 and set to “Sequenced Relay Control” with a one-second resolution. Output 3 is inert. 

Output 2 pulses with a pulse length proportional to the number of cooling stages enabled. 

This does not mean that the DMUX-4J will pulse. It remains an ON/OFF output. For more 

details on the DMUX-4J device, consult the DMUX-4J Specifications and Installation 

Guides. 

• Cooling Demand Source: All cooling functions are regulated by the same demand 

source. This source is one of the predefined math functions (see Math Functions 

p.35). You can select “Math 1” through “Math 5”. 

2.1.4.1 Cooling Setpoints 

The activation and deactivation of each output is based on the setpoint and differential for 

that output, in relation to the chosen cooling demand source: 

• First Stage 

• Setpoint 


% 5 95 35 

• Differential 


% 8 99 20 

• Second Stage 

• Setpoint 


% 5 95 50 



% 8 99 20 

• Third Stage 

• Setpoint 


% 5 95 80 

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% 8 99 20 

• Fourth Stage 

• Setpoint 


% 5 95 90 

2.1.4.2 Operation 



% 8 99 19 

• Minimum ON Time: Once a stage of cooling is activated, this is the minimum amount of 

time it will remain ON, even if cooling is no longer required. It is also the minimum 

time required to elapse before the next stage can be engaged. 



• Minimum OFF Time: Once a stage of cooling is deactivated, this is the minimum 

amount of time it will remain OFF, even if cooling is required. 



2.1.4.3 Analog Cooling 

This function allows for analog cooling when a PTA2 interface is installed on Output 2. 

Output 3 is inert. Output 2 pulses with a pulse length proportional to the analog output. 

This does not mean that the PTA2 will pulse. For more details on the PTA2 device, 

consult the PTA2 Specifications and Installation Guides or the Rooftop Hardware Guide. 

Setpoint: 

Proportional: 


% 5 95 35 


% 8 95 20 

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• Enable Reverse Acting: The output voltage will be inversely proportional to the 

calculated output value. 

• Output Range: The analog cooling output can work over 2 different voltage ranges 

• 0-10V 

• 2-10V 

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2.1.5 Heating Configuration 

Figure 2.1.9: Heating configuration screen 

• Heating Demand Source: All heating functions are regulated by the same demand 

source. This source is one of the predefined math functions (see Math Functions 

p.35). You can select “Math 1” through “Math 5”. 

2.1.5.1 Digital Output 4 

• Function: Select the function of Output 4. 

• OFF: Output 4 is always OFF. 

• Preheat Permission: Output 4 is used for preheating permission. Permission 

is granted when the fan in ON and when there is no active cooling for a 

specified time period (see Delay between Heating and Cooling, page 27), and 

when the outside air limit is met (See p.24). This is the default setting. 

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• Heating Stage: Output 4 is used as an additional heating stage (enables 

setpoint and differential fields). 

• Setpoint: The setpoint used in the Output 4 heating stage. Only enabled if the Output 4 

Function is set to “Heating Stage”. 


% 5 95 55 

• Differential: The differential used for the Output 4 heating stage. Only enabled if the 

Output 4 Function is set to “Heating Stage”. 


% 8 99 20 

2.1.5.2 Analog Output 1 

• Function: Select the function of Analog Output 1. 

• OFF: Analog Output 1 is always OFF. 

• Preheat ONLY: Analog Output 1 is used only for preheating of the supply air. 

• Preheat AND Heating: Analog Output 1 assumes main heating and supply air 

preheating sequences. The final value of Analog Output 1 will be the maximum 

of the two. This is the default setting. 

• Heating ONLY: Analog Output 1 will only perform heating as specified. 

• Setpoint: The setpoint used in the Analog Output 1 heating stage. Only enabled if the 

Analog Output 1 Function is set to “Preheat AND Heating” or “Heating ONLY’” 


% 1 95 40 

• Proportional: The proportional band used for the Analog Output 1 heating stage. Only 

enabled if the Analog Output 1 Function is set to “Preheat AND Heating” or “Heating 

ONLY”. 


% 5 99 60 

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• Differential: The differential used for the Analog Output 1 heating stage. Only enabled 

if the Analog Output 1 Function is set to “Heating ONLY”. 


% 8 99 N/A 

• Enable Pulsing: Analog Output 1 will use pulse width modulation with a pulse width 

period of 1 second. Only enabled if using proportional. Pulse width modulation is 

designed for solid-state relay-equipped electric duct heaters. 

• Enable Reverse Acting: The output voltage will be inversely proportional to the 

calculated output value 

2.1.5.3 Preheating 

Preheating is calculated using a PI control loop (proportional and integral) to achieve the 

desired setpoint. 

• Setpoint: The setpoint used for the Analog Output 1 preheating control sequence. The 

Master Controller maintains the supply air at this value. Disabled if the Analog Output 

1 Function is set to “OFF” or “Heating ONLY”. 


°C 15 27 21.5 

°F 59 80.6 70.7 

• Proportional: The proportional band used to calculate the proportional component for 

Analog Output 1 preheating. Disabled if the Analog Output 1 Function is set to “OFF” 

or “Heating ONLY”. 


°C 0 50 20 

°F 0 90 36 

• Integral: The integral value used to calculate the integral component for preheating. It 

defines the amount of time required for the integral component to add 100% to the 

output due to an error of 1 °C. Disabled if the Analog Output 1 Function is set to 

“OFF” or “Heating ONLY”. 

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2.1.6 Limits 

2.1.6.1 Return Air Temperature 

Figure 2.1.10: Limits configuration screen 

This section describes all the limits applicable to the return air temperature. If no return 

air temperature sensor is used, then these conditions are assumed to be satisfied. 

• Stop Cooling (1st Stage) when lower than: 


°C 10 40 14 

°F 50 104 57.2 

Re-enabled at 2°C (3.6°F) above this value. 

• Stop Cooling (2nd Stage) when lower than: 


°C 10 40 20 

°F 50 104 68 


• Stop Heating when higher than: 


°C 0 50 35 

°F 32 122 95 

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Re-enabled at 5°C (9°F) below this value. 

2.1.6.2 Outside Air Temperature 

This section describes all the limits applicable to the outside air temperature. If no outside 

air temperature sensor is used, then these conditions are assumed to be satisfied. 

• Stop Cooling (1st Stage) when lower than: 


°C -40 40 -40 

°F -40 104 -40 

Re-enabled at 2°C (3.6°F) above this value. Note that these limits do not 

apply to the economizer sequence of the ProLon advanced rooftop. 

• Stop Cooling (2nd Stage) when lower than: 


°C -40 40 12 

°F -40 104 53.6 


• Stop Heating when higher than: 


°C 0 50 30 

°F 32 122 86 

Re-enabled at 2°C (3.6°F) below this value. 

• Enable Preheating if Lower than: 


°C -100 21 12 

°F -148 69.8 53.6 

Disabled at 2°C (3.6°F) above this value. 

• Restart fan if lower than: This function allows the fan to start even in unoccupied mode 

if the outside temperature gets too cold or too hot. 


Lower °C -40 40 -40 

than °F -40 104 -40 

Higher °C -40 40 40 

than °F -40 104 104 

There is a 2°C (3.6°F) differential applied to these values. 

2.1.6.3 Supply Air Temperature 

This section describes all the limits applicable to the supply air temperature. If no supply 

air temperature sensor is used and if no value is received from the network, these 

conditions are assumed to be satisfied. 

• Stop cooling stages in succession when lower than: When the supply temperature is 

lower than this setpoint, the currently activated cooling stages will turn OFF one by 

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one. There will be a delay between each stage deactivation, which is equal to the 

minimum compressor off time. 


°C -40 40 9 

°F -40 104 48.2 


• Modulating heat limit of Analog Output 1: If Analog Output 1 is configured as 

modulating, it will decrease its signal to keep the supply temperature from exceeding 

this value. 


°C 21.5 55 40 

°F 70.7 131 104 

• Stop heating when higher than: All heating stages will shut off if the supply 

temperature exceeds this value. 


°C 21.5 55 50 

°F 70.7 131 122 

Re-enabled at 5°C (9°F) below this value. 

• Stop Fan if lower than: When the supply air temperature goes below this value, the fan 

will stop. This limit is ignored for a 5-minute period following a transition of the fan 

status from OFF to ON, unless it was first caused to stop by this limit. 


°C 0 21 4 

°F 32 69.8 39.2 

• Restart Fan at: If the fan has been stopped due to the supply low temperature limit 

(see previous limit), this is the temperature at which the fan will restart. 


°C 2+Stop Setpoint 20+Stop Setpoint 8+Stop Setpoint 

°F 3.6+Stop Setpoint 36+Stop Setpoint 14.4+Stop Setpoint 

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2.1.7 Priority 

Figure 2.1.11: Priority configuration screen 

• Deadband Between Heating and Cooling: This specifies the deadband, centered on 

0%, in which no heating and no cooling actions will be taken. This value is applied to 

each math function. 


% 0 30 20 

• Delay Between Heating and Cooling: This is the minimum amount of time that must 

pass after the end of any heating action before any cooling action can begin, and 

vice-versa. 



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2.1.7.1 Priority Mode 

• Auto: Choose this to have the priority switch automatically depending on the outside 

temperature. 

• Outside Temp: The outside temperature around which to switch heating or cooling 

priority. Heating will have priority below this value, while cooling will have priority 

above it. 


°C -20 30 8 

°F -4 86 46.4 

• Differential: The variation of the outside temperature around the setpoint necessary to 

activate a switch in priority. Used to prevent rapid changes in priority due to small 

temperature variations around the setpoint. 


°C 0 20 4 

°F 32 68 39.2 

• Manual: Use this mode to manually set the priority to heating or cooling. 

Please note that if the cooling and heating outputs are controlled by the same math 

function, the priority has no importance because a single math function cannot produce a 

heating and cooling demand at the same time. 

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2.1.8 Calibration 

Figure 2.1.12: Calibration configuration screen 

• Supply Temperature Calibration: This value will be added to the temperature received 

from the supply sensor to calculate the actual supply temperature. This value will 

NOT be added if the network provides the supply temperature to this device. 


°C -20 +20 0 

°F -36 +36 0 

• Return Temperature Calibration: This value will be added to the temperature received 

from the return air sensor to calculate the actual return air temperature. 


°C -20 +20 0 

°F -36 +36 0 

• Outside Temperature Calibration: This value will be added to the temperature received 

from the outside air sensor to calculate the actual outside air temperature. 


°C -20 +20 0 

°F -36 +36 0 

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2.1.9 Device Properties 

Figure 2.1.13: Device properties screen 

This screen shows all the intrinsic properties of the device you are configuring. This helps 

you determine its capabilities without having to visually inspect the device. 

• Device Type: The type of controller you are configuring. 

• Software version: The current software in the controller. The greater the software 

version, the more advanced the device is. Devices can be upgraded by 

reprogramming them (see “Reprogram” below). 

• Hardware version: This is the physical nature of the controller. Different hardware has 

different features. The hardware can only be changed by replacing it physically. 

• Device Number: The network address of the controller, which is configured manually 

using the dipswitches on the board itself. 

• Device Name: This field indicates the current name of the controller, which you can 

modify. Alternatively, you can just right-click on the icon and select the rename 

option. 

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• Reset Device: Causes the device to perform a reset. All configuration properties 

REMAIN SAVED. However, resetting the controller removes all active overrides. This 

function is useful for recalibrating the damper or for other debugging purposes. 

• Reprogram: This function is used to upgrade the controller with a new software 

version. Focus will begin by asking you for the HEX file that contains the software 

update. Software update HEX files can only be provided by ProLon. At the end of the 

procedure, Focus will automatically reapply all the parameters you have previously 

configured into the device. 

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2.2 Network Menu 

A ProLon Master (Basic Rooftop, Advanced Rooftop and Heatpump) controls and 

manages the ProLon Slaves (VAV Controller, Thermostat, Boiler Controller and 

Humidifier Controller) on its system. The data exchanged between the master and its 

slaves is used to calculate the math functions, control the occupancy, activate morning 

warm up functions, and much more. Therefore, a proper network configuration is an 

important element in any zoning system. 

The Network menu, which can be found at the top of the configuration screen of any 

master, gives you access to the network configuration screens, which are explained in 

this section. 

2.2.1 Slave List 

Figure 2.2.1: Slave list configuration screen 

Used mostly for offline configuration, in this screen you can manually add slaves from 

your Focus network list to the master’s slave list. 

• System List: The list of slave icons already existing in the selected system. All icons 

already created on this masters system will be found here. 

• Master’s List: The list of slaves that the master is aware of. If a slave is not on the 

master’s slave list, the master will NOT attempt to communicate with it. This means 

that the demand of this slave will not be included in any math function calculation, 

and it will not receive the system-shared supply temperature or occupancy status. In 

addition, ProLon Focus will NOT be able to communicate with the slave (its icon 

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becomes grey). This is because the master assumes that the slave does not exist 

and therefore blocks any related network traffic. 

Updating the master’s slave list is useful when offline because it allows you to 

configure certain network properties. 

When online, updating the master’s slave list can be done quickly by simply pressing 

the “Check Network” button, by right-clicking the master icon and choosing “Get List”, 

or by pressing the reset button on the master physically. 

2.2.1.1 Buttons 

• Add>>: Add all the selected slaves from the system’s slave list to the master’s slave 

list. To select a slave, simply click on its name in the list. To select multiple slaves, 

hold CTRL while clicking on their names. 

• Add All>>: Add all the slaves from the system’s slave list to the master’s slave list. 

• Remove: Remove all selected slaves from the master’s slave list. To select a slave to 

remove, simply click on its name in the list. To select multiple slaves, hold CTRL 

while clicking on their names. 

• Remove All: Remove all the slaves from the master’s slave list. 

• Create Icons: Create Focus icons for each slave in the master’s slave list, unless the 

icon already exists. 

• Check Network: Causes the master to automatically retrieve the list of slaves attached 

to it. All slaves found will be displayed in the “Master’s List” box. This function is 

unavailable offline. 

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2.2.2 Math Functions 

Figure 2.2.2: Math functions configuration screen 

This screen is used to configure a ProLon Master’s math functions. A ProLon Master 

does not produce its own demand; it must first retrieve the demand of each slave on its 

network. With the demand of each slave on hand, it can process these values using 

certain general math functions. The results of the math functions are then applied to the 

cooling, heating and other functions of the master, as defined by the user. There are five 

available slots to program. For each slot, you have the following options: 

• Source: This is the type of math function used. 

• Weighted Average: The weighted average of all the slaves included in the 

calculation. The weighted average is calculated by multiplying the demand of 

each slave by its respective weight and adding them together. The result is 

then divided by the total weight in the calculation. This provides a math function 

whose final result is more influenced by the zones with greater weight. 

• Max Heating: This returns the highest demand of heating of all the slaves 

included in the calculation. 

• Max Cooling: This returns the highest demand of cooling of all the slaves 

included in the calculation. 

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• Weighted Average (heating only): This is the same as “Weighted Average”, 

except only zones with a heating demand are included in the calculation. 

• Weighted Average (cooling only): This is the same as “Weighted Average”, 

except only zones with a cooling demand are included in the calculation. 

• Occupancy: If there is at least one slave found in this calculation that is 

occupied (or overridden to be occupied), this math function will return 100%, 

otherwise it will be 0%. 

• Override: If there is at least one slave found in this calculation that is 

overridden from unoccupied to occupied mode, this math function will return 

100%, otherwise it will be 0% 

• Global: When this is selected, ALL slaves on the system are included in the 

calculation. The global weight of each slave device will be used in the calculations. 

• Group Code: When this is selected, ONLY the slaves belonging to this group are 

included in the calculation. There are 250 groups available, numbered 1 through 250. 

The group weight of each slave controller belonging to that group will be used in the 

calculation. When Group Codes are not being used, they are automatically set to 

zero. 


N/A 1 250 0 (Not used) 

• Poll Rate: The rate at which this master will update all the slaves on the system and 

receive new information from them. Increase this value to alleviate network traffic. 


Seconds 1 250 3 

During a Master/Slave data transaction, the exchanged data is as follows: 

Master Slave: 

• Supply temperature 

• Outside temperature 

• Occupancy status of the master 

• Morning warm up command 

• Override of Outputs 3, 4 or 5 based on the outside temperature 

• Damper Override 

Slaves Master 

• Demand 

• Group codes and weights 

• Global weight 

• Override status 

• Supply temperature, if this slave is the source of the system’s supply 

temperature (see below) 

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• List Refresh Rate: The interval at which this device will attempt to scan the network for 

slaves and create a new slave list. When set to zero, the device will refrain from 

searching for slaves. 



• Demand Filter: The demand filter is used to limit the rate of change of the math 

functions. When a math value changes, it is first compared to its previous value. The 

difference between the two is multiplied by the demand filter and added to the 

previous value. Example: 

- Demand Filter = 30% 

- Previous math value = 50% 

- Desired math value = 75% 

- Final math value = (75-50) x 30% + 50 = 57.5% 

Therefore, instead of the math value suddenly jumping from 50% to 75% in the span 

of 1 second, it will instead jump to 57.5 % and gradually reach the 75% mark. Note 

that the demand filter is not applied if the difference between the previous math value 

and the desired math value is equal or less than 3%. 


% 0 100 10 

• Unoccupied Mode: This option lets you decide if the master should modify the math 

calculation strategies during unoccupied mode. 

• Max demand: During unoccupied mode, “Averaging” type math functions will 

be replaced by “Max demand” type functions: 

o “Weighted Average” is replaced by “Max Demand”. In the case 

where there are conflicting demands between different slaves 

(cooling and heating), priority is used to decide between them (p.28). 

o “Weighted Average (Cooling Only)” is replaced by “Maximum 

o 

Cooling” 

“Weighted Average (Heating Only)” is replaced by “Maximum 

Heating” 

• Normal: Math functions will always be calculated the same way, regardless 

of occupancy. 

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2.2.3 COM Port Settings 

Figure 2.2.3: COM Port configuration screen 

Changes to the settings in this section will only take effect once the ProLon Master is 

reset or powered OFF/ON. Each port on the master has the same options. The NET port 

is the port with two screw terminals. 

• Baud Rate: This sets the baud rate value for the COM port. The default baud rate used 

by a master is 57600bps but may be set to any of these standard values: 

• 9600 bps 

• 19200 bps 

• 38400 bps 

• 57600 bps 

• 76800 bps 

• 115200 bps 

• Parity: This sets the parity for communication on the COM port. The default parity used 

by a master is “None” but may be set to any of these standard values: 

• None 

• Odd 

• Even 

• Stop Bits: Sets the number of stop bits used by the COM port. By default, it is set to 1, 

but can also be set to 2. 

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2.2.4 Other 

Figure 2.2.4: Other configuration screen 

This screen lets you configure various network parameters. 

• System Supply Temperature Source: The desired device to be the source of the 

system supply temperature. The master retrieves the supply temperature from this 

device and distributes it to all other slaves. Any slave that already has its own supply 

temperature sensor will ignore this value. By default, it is set to the system’s master 

device. 

Morning Warm Up Sequence 

• Disable Outputs 3 / 4 / 5 on All Slaves: When the master detects a switch from 

unoccupied mode to occupied mode (not including overrides), it commands all slaves 

to disable their Outputs 3 and/or 4 and/or 5 (output = 0 V) for the amount of time 

specified by Delay time. Because Outputs 3, 4 and 5 are generally used for zone 

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terminal heating, this function can help maximize energy savings by relegating all 

morning heating to the central unit. 

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• Delay Time: The amount of time Outputs 3 and 4 remain disabled. 


Minutes 1 300 OFF 

Cooling priority zones 

When a zone is specified as a cooling priority zone, the master will use the cooling 

demand of that zone as soon as its demand surpasses the math output assigned to 

cooling. A maximum of three high-priority cooling zones may be selected. 

WARNING: This option should only be used by experienced building automation 

specialists. 

Outside Temperature Override 

This function commands selected slaves to set their Output 3/4/5 to the minimum value 

specified when a certain condition on the outside temperature is met. This override can 

be activated when the outside temperature is either greater or less than the temperature 

setpoint: 


°C -30 40 -20 

°F -22 104 -4 

If you set the override to zero, the output will remain deactivated (0%). The overrides will 

remain active as long as the outside temperature satisfies the specified condition. By 

default, these overrides are deactivated. 

Clicking the “Set Participation” button opens a window that allows you to select the slaves 

that will participate in the corresponding outside temperature override. 

Slave Damper Override 

Override all slave dampers to the desired position (between 0 and 100%). This function is 

useful during air balancing procedures. This parameter will be lost if the master loses 

power or is reset. 

© Copyright 2013 ProLon. All rights reserved. 

No part of this document may be photocopied or reproduced by any means, or translated to another language without prior written consent 

of ProLon. All specifications are nominal and may change as design improvements are introduced. ProLon shall not be liable for damages 

resulting from misapplication or misuse of its products. All trademarks are the property of their respective owners. 

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