104
Procedure Explanations and references
Electric booster heater Enabling the integral instantaneous heating water heater
■
Function not available The instantaneous heating water heater is not enabled for room heating or DHW
heating:
Instantaneous heating water heater only is switched on only for frost protection
of the heat pump and the system.
■
Heating only The instantaneous heating water heater only is switched on for room heating,
e.g. if the heat pump output is insufficient.
Note
In conjunction with an external heat generator, room heating is always provided
via the external heat generator.
■
Only DHW The instantaneous heating water heater only is switched on for DHW reheating,
e.g. if the set DHW temperature value is not reached with the heat pump alone.
■
Heating and DHW The instantaneous heating water heater only is switched on for room heating
and DHW reheating, e.g. if the heat pump output is insufficient.
Note
In conjunction with an external heat generator, room heating is always provided
via the external heat generator.
■
Maximum output, elec-
tric booster heater
Output restriction for the instantaneous heating water heater
Depending on the power supply to the instantaneous heating water heater, the
max. output must be limited as follows:
Max. output with 230 V~ power supply
■
1-phase: 3 kW
■
2-phase: 5 kW
■
3-phase: 8 kW
Max. output with 400 V~ power supply
■
2-phase: 5 kW
■
3-phase: 8 kW
Digital input 1 Function of the floating contact connected to connection 143.2 on the bottom
PCB
■
No function No floating contact connected
■
External demand, DHW
circulation pump
If the connected button is pressed, the DHW circulation pump runs for 5 minutes.
■
External blocking Refrigerant circuit and instantaneous heating water heater are blocked.
■
Blocking heating/cooling
circuit 1
If the temperature limiter to restrict the maximum temperature for underfloor
heating circuit 1 responds, the room heating for this heating/cooling circuit is
switched off.
Digital input 2 Function of the floating contact connected to connection 143.3 on the bottom
PCB
■
No function No floating contact connected
■
Fault message input External appliance fault message, e.g. external heat generator
■
Blocking heating/cooling
circuit 2
If the temperature limiter to restrict the maximum temperature for underfloor
heating circuit 2 responds, the room heating for this heating/cooling circuit is
switched off.
Commissioning, inspection, maintenance
Commissioning the system (cont.)
6222080
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