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3.6.3
3.6.4
76
Terminal
Type
1
Earth
2
Live
3
Neutral
Note
Fit cables in the strain relief.
Caution
The controller, as the controller of the water heater, is phase-sensitive. It is absolutely
essential to connect the mains live (L) to the live of the water heater, and the mains
neutral (N) to the neutral of the water heater.
Caution
There must be no potential difference between neutral (N) and earth ( ). If this is the
case, then an isolating transformer must be used in the supply circuit.
Connecting DHW pump
The Theta dual service module is supplied with a DHW-pump (3-wire connection,
230 V
). You must connect this pump to the controller of the dual service system.
AC
Note
This pump is only suitable for drinking water.
Terminal
Type
17
Earth
18
Neutral
20
Live
Note
Fit cables in the strain relief.
Connecting heating pump
The heating pump (3-wire connection, max. 0,8A) is mounted in the heating system. You
must connect this pump to the controller.
Terminal
Type
14
Earth
15
Live
16
Neutral
Note
Fit cables in the strain relief.
Colour
Description
yellow/green
Earth control.
brown
Live input control via isolator.
blue
Neutral control.
Colour
Description
yellow/green
Earth DHW-pump.
blue
Neutral DHW-pump.
brown
Live output of controller to DHW-pump.
Colour
Description
yellow/green
Earth heating pump.
brown
Live output of controller to heating pump.
blue
Neutral heating pump.
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