56
NexPolar
Function Parameter
Description
Value
range
Default
value
Set
value
Water pump run
time
144
The code indicates how long the water pump has been operating.
-
-
-
Lock
Current water set
point
145
The code indicates the current water set point set by the system control.
-
-
-
Lock
Clean contact off
146
Code used to set the various SWITCHING OFF logics
1. Standard OFF
2. Controlled OFF cycle (only if the Heat Pump is controlled by clean contact)
1
2
1
Alarm/ ambient
air temperature
reached
147
Code used to select the output connected to PIN 5 of the terminal board
1. Alarm signal
2. Signal that the air temperature set point has been reached
1
2
1
External heat source
air temperature limit
148
This code is used to set the outside air temperature threshold value below
which only the external heat source will be operative as per algorithm.
(Heat Pump Stop)
-20°C
65°C
-20°C
Temperature list
149
Code used to set which temperature the control panel should display in
the temperature zone.
1. Indoor air temperature
2. Outlet water temperature (from LWT sensor)
3. Not available
4. Refrigerant temperature (from TR sensor)
5. Suction temperature (from TS sensor)
6. Discharge temperature (from TD sensor)
7. Refrigerant temperature (from TE sensor)
1
7
1
Auxiliary outdoor air
temperature limit
150
This code is used to set the outside air temperature threshold value below
which both the heat pump and the external heat source will be operative
as per algorithm.
-20°C
30°C
0°C
Auxiliary delay
151
This code is used to set the delay time after which, when (temperature set
in code 148) < Outside Air Temperature < (temperature set in code 150), the
external heat source will switch on.
The counting of the time starts when the activation of the external heat
source is required as per algorithm.
1 Min 60 Min
10 Min
Auxiliary hysteresis
152
This code is used to set the hysteresis temperature needed to activate the
external heat source.
1°C
20°C
5°C
Domestic hot water
in off mode
153
Code to establish whether, when the system is in off mode, the domestic
hot water production logic can be activated:
1. Yes, the domestic hot water logic is always active
2. No, the domestic hot water logic can be activated only in Heating or
Cooling mode
1
2
1
Status of external
heat source
154
Code used to establish the status of the external heat source when this
later is activated and the outside air temperature is below the temperature
value set with parameter 148:
0. Always active
1. On/Off depending by actual room temperature vs room temperature set-
point (same hysteresis of the thermostat function). If the command is not
installed or the room sensor is unavailable, On/Off depends on the water
set-point (+1/-4 °C of hysteresis)
2. On/Off depending on the water set-point (+1/-4 °C of hysteresis).
0
2
1
Main water pump vs
external heat source
status
155
This code is used to de
fi
ne the water pump logic when the external heat
source is activated and the outside air temperature < temperature value
set in Code 148
0. Always off
1. On/Off depending on the On/Off status of the external heat source
2. Always on
0
2
1
Electric trace heater/
additional water
pump
156
Code used to select the output connected to PIN 12 on the terminal board.
In case an additional water pump option is active, this code is used to
select its operating system with respect to the domestic hot water request
(ACS) (if outside air temperature > (temperature value set with Code 148).
0. Electric heat tracing installed for the antifreeze system
1. Additional water pump On/Off depending on the main water pump
logic. This means that if the DHW is on, the additional water pump is ON.
2. Additional water pump On/Off depending on the main water pump
logic, but always OFF when the DHW is on.
0
2
1
Additional water
pump
157
This code is used to establish the additional water pump, if it has been
installed, when the outside air temperature < temperature value set with
Code 148:
0. Always off
1. On/Off depending on the On/Off status of the external heat source
2. Always on
0
2
2
Delta air set point
158
Code used to establish the hysteresis with respect to the ambient
temperature set point to switch off the unit when control panel system is
installed and used as a thermostat (100 control panel code = 4).
0.2°C
1°C
0.3 °C
Function Parameter
Description
Value range Default value Set value
Min Max
Unit con
fi
guration
302
This code is used to con
fi
gure the unit:
0. Cooling only
1. Heating and cooling
2. Heating only
0
2
1
Table of factory parameters and functions
