61
Multi-functional DC inverter air/water heat pump
GB
Setting of booster heaters
and second heat source
4.1
Control of pumps and valves
4.2
Temperature setting
ranges
4.3
Pumps
C1: Integrated circulation pump
C2: Optional auxiliary pump or heating circuit pump (parameter P65)
C3: DHW circulation pump
Valves:
G1: Electrical 3-way valve – changeover heating and DHW heating
G2: Electrical 3-way valve – changeover Cooling - Heating
G3: Electrical 3-way valve – changeover solar heat and heat pump
Also see electrical diagrams in 3.4.
The G2 relay is currentless in cooling mode.
Space cooling mode
• The temperature setting range is b10 and +30 °C, standard setting is +12 °.
Space heating mode
• The temperature setting range is b10 and +60 °C, standard setting is +45 °C.
DHW mode
• The temperature setting range is b10 and +60 °C, standard setting is +50 °C.
(From +50 °C and higher an E1 electrical booster heater sets in).
Start conditions:
• Outside temperature < [P22]
• Return temperature ≤ A/C target temperature Heating [P02] A/C return temperature
[P24] ∆
• Flow temperature ≤ target temperature Heating [P02]
If the conditions above are all fulfilled simultaneously and the compressor runtime is
> [P36], the E2 electrical booster heater will be switched on.
Stop conditions:
• Outside temperature ≥ [P22] +2 °C
• Flow temperature ≤ A/C target temperature Heating [P02]
If one of the conditions above is fulfilled, the E2 electrical booster heater will be switched
off.
Remarks:
In A/C heating mode, the E2 electrical booster heater is switched on at the beginning of
the defrosting process and switched off at the end of the process.
If there is a problem with the heat pump in A/C heating mode (except sensor failure of
the flow temperature), the E2 electrical booster heater will be switched on and will work
normally according to the set temperature of the A/C heating mode.
Function of second heat source:
Outside temperature < [P82], the heat pump is switched off and the second heat source is
switched on.
Outside temperature ≥ [P82], the heat pump is switched on and the second heat source is
switched off.
