Thermia ATEC Installation Guide

5.2.4 Atec Total electrical components in the control centre
2
3
4
1
5
6
7
Fig. 3: Control unit
Position
Description
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
5.3 Electrical cabinet in heat pump
3
4
5
2
1
6
Fig. 4: Electrical cabinet
Position
Description
1 Heat pump card
2 Expansion valve card
3 Soft starter
4 Overcurrent protection
5 Terminal block
6 Capacitor (only for 230V 1N)
5.4 Cable connection
N
Laying electrical wiring can also cause noise so this installation must be carried out appropriately. An appro-
priate installation is where there is approximately 300 mm free cable between the heat pump and the build-
ing. 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.
Installation Guide
Atec
Thermia Värmepumpar VMBQY102
25

Thermia ATEC Specifications

General

Brand	Thermia
Model	ATEC
Category	Heat Pump
Language	English