8 Electrical Connection
8.1 Electrical wiring illustration
Warning! Electrical installation may only be carried out by an authorised electrician and must follow
applicable local and national regulations.
L
PE
N
1 2
3 4
θ
78-100˚C
U1
U2
M
1
20
11
12
29 30
26
22
T3
T4
T5U
T5L
TP
TH
G
C
Figure 12. Wiring diagram
Position Explanation
11 TCO
12 MTCO
20 Compressor
26 Electrical heater
22 Controller
29 Compressor relay, K1
30 Electrical heater relay (UE), K2
8.2 Connecting external supply voltage
DANGER! Electrical voltage! The terminal blocks are live and can be highly dangerous due to the risk of
electric shock. All power supplies 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.
1. Route the power cable through the opening of the terminal block cover on the side of the unit and to the
terminal block. See Figure 1. Exploded view, unit components Page 7.
2. Connect the power cable to the terminal blocks according to the wiring diagram. See Figure 12. Wiring dia-
gram Page 18.
18 – Installation, Service and User Manual VMGFK202
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