Danfoss DHP-L Series User manual

Electrical
installation instructions
Danfoss Heat Pumps
DHP-L
VWBMI302

DHP-L
Electrical installation – Page 2 VWBMI302
Contents
DHP-L 4, 400V 3N ......................................3–5
DHP-L 6, 400V 3N ......................................6–8
DHP-L 8, 400V 3N .................................... 9-11
DHP-L 10, 400V 3N...............................12–14
DHP-L 12, 400V 3N...............................15–17
DHP-L 16, 400V 3N...............................18–20
DHP-L 4 SP, 230V 1N............................21–23
DHP-L 6 SP, 230V 1N............................24–26
DHP-L 8 SP, 230V 1N.............................27-29
DHP-L 10 SP, 230V 1N .........................30–32
DHP-L 12 SP, 230V 1N .........................33–35
DHP-L Opti 6, 230V 1N .......................36–39
DHP-L Opti 8, 230V 1N .......................40–43
DHP-L Opti 10, 230V 1N.....................44–47
DHP-L Opti 12, 230V 1N.....................48–51
DHP-L Opti 6, 400V 3N .......................52–55
DHP-L Opti 8, 400V 3N .......................56–59
DHP-L Opti 10, 400V 3N.....................60–63
DHP-L Opti 12, 400V 3N.....................64–67
DHP-L Opti 16, 400V 3N.....................68–71
Electrical installation
Danfoss heat pumps are factory-wired internally. The leads that are to
be connected are the mains supply (5-wire DPH), outdoor temperature
sensor and room sensors (if any).
• All electrical wiring must be carried out by a certified electrician in
compliance 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 diagram.
• 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 incor-
rect 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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