60
FOR THE INSTALLER
Connecting the heat pump to
the power supply
Make sure the electricity has been switched off before connecting the heat
pump to the mains. Check that cables and printed circuit cards are intact.
High and low current cables should be routed separately in order to avoid
interference on the sensors.
Wiring diagram supplied with the heat pump.
A description of external connections is given in this section. Examples of
external connections include room and outdoor sensors and mixing valves.
Safety switch and earth-fault breaker
Safety switch
All heat pumps must be fi tted with a safety switch.
Earth-fault breaker
If the heat pump is to be connected across an earth-fault breaker then a
separate earth-fault breaker for the heat pump is recommended. Comply
with applicable regulations.
Warning
The electrical installation may only be
performed by a qualifi ed electrician.
For reasons of safety the main power
supply must be disconnected before
working on the heat pump.
Connecting the heat pump to the power supply
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