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Installation instructions geoTHERM VWS/VWW 0020057444_01
6.3 Electrical
control
box
2
1
3
5
6
4
Fig. 6.1 Electrical control box
Key to Fig. 6.1
1 Controller PCB (under the cover plate) with connection strip for
sensors and external components
2 Cable
clamps
3 Start-up current limiter PCB (accessory), lower level of control
box
4 Safety thermostat (STL) for the auxiliary heating
5 Contactors for the auxiliary heating element and compressor,
for the VWW only: Well pump contactor with motor protection
switch
6 Power supply connection terminals
The exact allocation of the connection terminals (
6
) can
be found in Chap. 6.4.
Additionally, there are two coiled cables hanging inside
the control box (not shown here):
– small two-way plug:
connecting cable for the operating console
– large three-way plug:
power supply for vrnetDIALOG
A control cable for the vrnetDIALOG is also supplied (ac-
cessories).
6.4
Connecting the power supply
Different types of power supply are provided for heat
pumps by the power companies. The heat pump can be
operated with various types of mains feed. Three types
of connection are described on the following pages.
• Pass the power supply cable(s) through the elongated
hole in the rear of the unit.
• Pass the cables through the unit, through the appro-
priate strain relief clamps and on to the connection
terminals on the connector strip.
• Carry out the wiring of the connection as illustrated in
the following wiring diagrams.
a
Caution!
The appliance covers must be fitted
after completion of the installation work.
Electrical installation 6
Summary of Contents for 0010002778
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