Viessmann VITOCAL 350-A Installation And Service Instructions Manual page 45

Air/water heat pump with electric drive, 400 v~
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Electrical connections: Heat pump control unit
Fitting the casing front
B
4.
7.
B
A
3.
6.
8.
Fig. 39
Cross connect PCB
A
ON/OFF switch plug-in connection
B
X3
X2
X3
X2
5.
(cont.)
2.
1.
C
X20
D
Casing front
C
Controller and sensor PCB
D
Installation sequence
45

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