Danfoss DHP-AT, Installation And Service Instructions Manual

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7 Electrical installation
DANGER! Hazardous electrical voltage! The terminal blocks are live and can be highly dangerous due to
the risk of electric shock. All power supplies must be isolated before electrical installation is started. The
heat pump is connected internally at the factory, for this reason electrical installation consists mainly of
the connection of the power supply.
Warning! Electrical installation may only be carried out by an authorised electrician and must follow
applicable local and national regulations.
Warning! The electrical installation must be carried out using permanently routed cables. It must be
possible to isolate the power supply using a multi-pole circuit breaker with a minimum contact gap of 3
mm.
The electrical installation includes connecting the following components to the heat pump:
•
Operator panel
•
Circulation pump
•
Power supply
•
Buffer tank sensor
Optional components:
•
Hot water tank electrical heater
•
External electrical heater
•
Hot water tank sensor
•
Reversing valve, hot water
For details about the connection points, see the Connection diagram, Page 1 and Wiring diagram, Page 1. For
details about the components, see Figure 6. Example, system solution Page 17.
7.1 Connecting the operator panel
Connect the communication (signalling) cable from the operator panel to the connector marked Operator panel in
the heat pump. The cable has prepared connectors that will fit only one way.
Installation and service instructions VMGFI202 – 21