Viessmann Vitocal 242-S Installation And Service Instructions Manual page 59

Electrical connection
External unit: Overview of connections
Vitocal 242-S, type AWT-AC
241.A04
A
A Wiring chamber:
■ BUS connection to the internal
unit
Note
Do not interchange the BUS con-
nection wires between the internal
and external units.
■ Compressor power supply
(cont.)
241.A07
A
Installation sequence
241.A10 and A13
A
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