24
External connections to the heat pump
The external connections must be made for the heat pump:
Power supply 1-phase:
The power supply is connected to terminals L, N, and Earth.
Mixing valve on the heating circuit:
If a second heat curve with a mixing valve is to be used, the mixing valve is connected to
terminal block SV1.
External main pump in the heating system G1 (P1):
The external main pump must be connected to the terminal block if a bypass is required. The
pump is connected to terminal P1.
Return sensor T1 (GT1):
Must always be connected. Connect to terminal GT1.
Outdoor sensor T2 (GT2):
Must always be connected. Connect to terminal GT2.
Hot water sensor T3 (GT3):
Is connected to terminal GT3 X on the terminal block.
Mixing valve sensor T4 (GT4):
Is connected when a mixing valve for a second heat curve is to be used. Connect to terminal
GT4.
Room sensor T5 (GT5):
Is connected if room sensor infl uence is required.
Mixing
valve
G1 (P1)
Terminal board
230 V
Retur
n sensor
Outdoor sensor
Hot water
Mixing valve
Room sensor
Terminal board
for external
connections
Connecting the heat pump to the power supply
