7.1.4
DHP-AQ Maxi electrical components in the control centre
Symbol explanation
2
3
4
1
5
6
7
1
Terminal block
2
Terminal block for internal electrical auxiliary heater (IH)
3
Hub card
4
Space for expansion card (accessory)
5
Space for communications card (accessory)
6
Space for terminal block for expansion card (accessory)
7
Overheating protection
7.2
Electrical cabinet in heat pump
Symbol explanation
3
4
5
2
1
6
1
Heat pump card
2
Expansion valve card
3
Soft starter
4
Overcurrent protection
5
Terminal block
6
Capacitor (only for 230V 1N)
7.3
Cable connection
Note! Laying electrical wiring can also cause noise so this installation must be carried out appropriately.
An appropriate installation is where there is approximately 300 mm free cable between the heat pump
and the building. 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.
UV resistant cable must be used for outdoor power cables. Cable choice must follow applicable local and national
regulations.
UV resistant, twinned pair date/telephone cable must be used for outdoor communication cables. The cable must
be screened with the one end of the screening (it does not matter which end) earthed in a ground block. The cable
section area must be a minimum of 0.25 mm
2
.
When the power cable is connected to the terminal block a screwdriver is used to open the terminal block.
1
2
3
5
OK!
4
1.
Insert the screwdriver.
2.
Straighten the screwdriver.
3.
Push the screwdriver down to release the cable lock.
Installation instructions VMGFD102 – 33
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