CENTRAL HEATING Chofu - System Configuration; System A: Heating Only Configuration

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The following is a list of common congurations that are typically used. If you require something specic to your
installation please contact us for a tailored list of parameters.
System A: Heat pump switched On/O by room thermostat(s) Heating Only
System B: Heat pump switched On/O by room thermostat(s) Heating + DHW
System C: Heat pump switched On/O by room thermostat(s) Heating & Cooling
System D: Heat pump switched On/O by room thermostat(s) Heating & Cooling + DHW
System A: Heat Pump Switched On/O by Room
Thermostat(s) Heating Only
System Configuration
Parameter Description
Value
Default Set To
2101
Flow temperature set point for heating
35 to 45 underoor (depending on oor covering)
60 – radiators
45
See
description
4301 Start temp of frost protection on room air temperature 14 5
5120
Terminal 20-21: On/O remote contact or EHS Alarm input
0 = Disable (Remote controller only)
1 = On/O remote contact
2 = EHS Alarm input
0 1
5126
Flow switch input, terminals 26-27:
0 = Disable
1 = Enable
1 0