Electrical installation instructions

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Electrical installation instructions. Danfoss Heat Pumps. DHP-A. VWBMG402 ... All electrical wiring must be carried out by a certified electrician in compliance ...
Electrical installation instructions Danfoss Heat Pumps DHP-A VWBMG402

DHP-A

Contents Electrical installation

DHP-A 6, 400V 3N.......................................4–7 DHP-A 8, 400V 3N.................................... 8–11 DHP-A 10, 400V 3N...............................12–15 DHP-A 12, 400V 3N...............................16–19

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 hardwired and a multi-pole switch (safety switch) must be installed in the power supply line to the unit.

DHP-A 6 SP, 230V 1N............................20–23 DHP-A 8 SP, 230V 1N............................24–27 DHP-A 10 SP, 230V 1N..........................28–31 DHP-A 12 SP, 230V 1N..........................32–35 DHP-A Opti 6, 230V 1N........................36–40 DHP-A Opti 8, 230V 1N........................41–45 DHP-A Opti 10, 230V 1N.....................46–50 DHP-A Opti 12, 230V 1N.....................51–55

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 high­voltage 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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Connect outdoor unit NOTE! The power cable may only be connected to the terminal block intended for this pur⚠⚠ pose. No other terminal blocks may be used! For correct connection between the heat pump and the outdoor unit, 8 connections must be made. Ground 0V Phase high speed Phase low speed

Motor protection fan Defrost sensor

Accessories

230V Heating, drip tray

Heat pump

Heating cable

Outdoor unit

Connecting the outdoor unit.

1. Route the power cable through the opening in the top panel of the heat pump to the terminal blocks. 2. Connect the power cable to the terminal block.

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If these instructions are not followed during installation, operation and maintenance, the obligations of Danfoss under the warranty regulations are no longer binding.

Danfoss A/S www.danfoss.com

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