Danfoss DHP-R 26, Installation Instructions Manual, Page: 3 / 46

VWBMD102 Electrical Installation Instructions DHP-R – 3
Important information
Before the heat pump is supplied with voltage you must ensure that the heating system and coolant
system are filled and bled of air otherwise the circulation pumps can be damaged.
If the electrician wishes to test his connections before the above is carried out, this should only done
when it has been checked that the coolant pump, the condenser pump, the hot gas pump and the
compressor are disconnected.
⚠ ⚠
24 VAC 1 must not be connected together with:
• 24 VAC 2
• 24 VDC
• Other equipment that uses 0-10V control signal
• Signal ground GND
24 VAC 2 must only be used as power supply to:
• External equipment that requires 0-10V control
signal
• Auxiliary modules
The two separate 24 VAC circuits must never be connected to each other or to protective ground.
The total power load on 24 VAC 1 respectively 24 VAC 2 must not exceed 50VA.