Overview Of Electrical Connections - Viessmann BW 30 .CS Series Installation And Service Instructions Manual

Electrical connections

Overview of electrical connections

Note
Route 230 V~ cables and LV leads separately and
■
bundle them tightly together at the terminals. This
ensures that, in the event of a fault, e.g. if a wire
becomes detached, the wires cannot drift into the
adjacent voltage area.
Strip the cables of a small amount of insulation close
■
to the terminals.
■ If 2 components are connected to the same terminal,
press both cores together in a single wire ferrule.
Wiring chamber, front
Fig. 19
Note
Diagram without terminal covers (see also page 56)
Power supply, power circuit (compressor)
A
3 x 400 V/50 Hz with ON/OFF switch
Circuit breaker, LV HRC fuse for power circuit,
B
compressor 2
(only type BW 302.CS090, BW 302.CS110,
BW 302.CS140, BW 302.CS180 and
BW 302.CS230)
(cont.)
Soft starter, compressor 2
C
(only type BW 302.CS090, BW 302.CS110,
BW 302.CS140, BW 302.CS180 and
BW 302.CS230)
Circuit breaker, LV HRC fuse for power circuit,
D
compressor 1
Soft starter, compressor 1
E
Power supply unit 230 V AC/24 V DC
F
Installation sequence
29