Electrical installation
instructions
Danfoss Heat Pumps
DHP-AL
VWBME102
Electrical installation – Page 2
DHP-AL
VWBME102
Contents
DHP-AL
DHP-AL 6 SP 230V 1N 3–6
DHP-AL 8 SP 230V 1N 7–10
DHP-AL 10 SP 230V 1N 11–14
DHP-AL 12 SP 230V 1N 15–18
DHP-AL 6 400V 3N 19–22
DHP-AL 8 400V 3N 23–26
DHP-AL 10 400V 3N 27 –30
DHP-AL 12 400V 3N 31–34
Electrical installation
Danfoss heat pumps are factory-wired internally. The leads that are to be con-
nected are the mains supply (5-wire DPH or 3-wire DPH SP), outdoor
temperature sensor and room sensors (if any).
• All electrical wiring must be carried out by a certified electrician in compli-
ance with local and national codes and regulations. When in doubt, contact the
local electricity distributor.
• The mains lead is passed through the top of the unit.
• Remove the front panel to get access to the terminal blocks. Connect the
mains lead to the terminal block according to the accompanying schematic dia-
gram.
• The connection of the heat pump to the mains supply must be hard-wired and
a multi-pole switch
(safety switch) must be installed in the power supply line to the unit.
WARNING! To disconnect the power supply to the heat pump, the safety switch
must be switched off.
NOTE! The cables to the outdoor and indoor sensors carry low voltage.
Interference from surrounding cables may affect these and cause incorrect
information to be sent to the control unit. It is therefore vitally important that
careful consideration be given to positioning of cables. Low-voltage cables must
be kept well separated from high-voltage cables. It is important that low-voltage
cables are run parallel to high- voltage cables and separated by a distance of at
least 25 cm for cable lengths up to 100 m. For longer cable lengths, the distance
between cables should be increased.
Important information
Before switching on the power supply to the heat pump, you must ensure that
the heating system, chilled water line and hot water heater are filled and vented.
Otherwise, the circulation pumps can be severely damaged.
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VWBME102
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