Electrical Installation - Danfoss DHP-H Installation And Service Instructions Manual

6 Electrical Installation
Electrical current! The terminal blocks are live and can
⚠
be highly dangerous due to the risk of electric shock. The
power supply must be isolated before electrical installation is
started. The heat pump is connected internally at the factory,
for this reason electrical installation consists mainly of the
connection of the power supply.
• Electrical installation may only be carried out by an authorized
electrician and must follow applicable local and national regula-
tions.
• The electrical installation must be carried out using permanently
routed cables. It must be possible to isolate the power supply
using an all-pole circuit breaker with a minimum contact gap of 3
mm. (The maximum load for externally connected units is 2A).
• Electrical connection can also cause noise so this installation
must be carried out appropriately. The figure below shows an
appropriate installation. There is approximately 300mm free cable
between the heat pump and building, however, this requires the
cable to be securely installed onto the top panel so that the cable
cannot be fed into the heat pump. It is inappropriate to bolt
trunking between the heat pump and the wall. This is because
vibrations can then be transmitted from the heat pump through
the trunking to the walls of the house.
Figure 29: Recommended distance between trunking on the wall and trunking on
1
5
6
7
10
the heat pump is 300mm .
Figure 30: The location of the components on the electrical panel .
Position Name
1 Terminal block (applies to the expansion card)
2 Terminal block (applies to DHP-A)
3 Defroster card (applies to DHP-A)
4 Terminal block
5 Space for Thermia/Danfoss Online
6 Warning decal
7 Space for expansion card
8 Contactor for compressor
9 Automatic fuses
10 Resetting overheating protection
11 Control computer
12 Soft starter card
2 3 4
8
9
11 12
6 .1 Connecting the power supply,
three phase 400V AC
⚠ NOTE! The power cable may only be connected to the terminal
block intended for this purpose. No other terminal blocks may be
used!
Figure 31: Incoming cable to heat pump with circuit breaker .
⚠
NOTE! Supplied with the jumpers shown in the figure.
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.
6 .2 Connecting the power supply, single
phase 230V AC
NOTE! The power cable may only be connected to the terminal
⚠
block intended for this purpose. No other terminal blocks may be
used!
Incoming 230V heat pump
Incoming 230V external auxiliary heater
Figure 32: Incoming cable to heat pump .
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.
6 .3 Connecting the outdoor sensor
NOTE! The outdoor sensor is connected with extra low protec-
⚠
tion voltage. Follow the specific installation instructions for
the outdoor sensor!
Figure 33: Connecting the outdoor sensor .
• Position the outdoor sensor on the north or north west side of
the house.
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