Technical data

ManualsBrandsDanfoss ManualsHeat PumpHeat Pump

VMBMD302

6 Electrical Installation

6.1 Electrical connection

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The electrical installation must only be carried out by

an authorized electrician (and must follow applicable

local and national regulations). The electrical instal-

lation must be carried out using permanently routed

cables. It must be possible to isolate the power sup-

ply using an all-pole circuit breaker for the intended

current. For information regarding maximum load

for externally connected devices. see electrical instal-

lation instructions.

Electrical current!

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The terminal blocks are live and can be highly dan-

gerous due to the risk of electric shock. The power

supply must be isolated before electrical installation

is started. The heat pump is internally connected

at the factory. The electrical installation therefore

mainly covers the following points:

Connection to the power supply

• Remove the front cover from the heat pump.

• Pull the power supply cable through the opening in the

rear of the heat pump to the terminal blocks.

• Connect the supply cable to the designated terminal

block.

See separate manual for the control system.

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Note that the power supply cable must only be con-

nected to the intended terminal block. No other ter-

minal blocks may be used!

Electrical cabinet layout

K1 Contactor compressor

K2 Contactor brine pump

F10 Over current relay compressor.

F11 Over current relay brine pump

F1 Fuse brine pump

F2 Control fuse regulation. overheating protection

compressor

F3 Control fuse condensation pump

F100 Fuse 24 VAC 1

F101 Fuse 24 VDC

F102 Fuse 24 VAC 2

X1 Terminal blocks for incoming supply and tempera-

ture sensor as well as terminal blocks for external

components

T1 Transformer 24 VAC 2x50 VA

E1 WM HPC

E2 HPC RM

6.2 Connecting pump hot gas

Connect the hot gas pump to the designated terminal

block. The voltage is 230 VAC. The pump is designed to be

placed outside the heat pump casing and must be con-

nected with flexible hoses.

This pump runs in parallel with the compressor.

6.3 Connecting sensor for outside temper-

ature

Position the outdoor sensor on the north or north west

facing side of the house. away from direct sunlight. The

outdoor sensor should not be placed on reflective panel

walls. The sensor must be positioned at least 1 m from

openings in the walls that emit hot air.

If the sensor cable is connected through a pipe. the pipe

must be sealed so that the sensor is not affected by out-

going indoor air.

• Remove the rear piece from the heat pump.

• Route the outdoor sensor’s connecting cable through

the opening in the rear of the heat pump up to the con-

necting block.

• Connect the sensor to the designated terminal block.

See separate manual for the control system.

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Note that the outdoor sensor is connected with

extra low protection voltage.

Also follow the applicable installation instructions for out-

door sensors!

NOTE! The bridge is

removed in the event

of separate control

circuit.

Bridged at delivery

Incoming cable

Incoming cable control circuit

F100

F101

F102

F11

F10

Sensor outdoor

PT1000

Pump hot gas