Viessmann BW 301.A090, Installation And Service Instructions Manual

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55
D Terminal strip for system compo-
nents (consumers)
3 x 400 V~/230 V~ (for connection,
see separate "Connection and wir-
ing diagram" sheet 13).
Switched phase can be used for on-
site system components. Observe
max. output.
E Only type BW 302.A09,
BW 302.A120, BW 302.A150,
BW 302.A180, BW 302.A250,
WW 302.A125, WW 302.A155,
WW 302.A200, WW 302.A250,
WW 302.A300:
EEV PCB 2 for compressor 2 (stage
2)
F EEV PCB 1 for compressor 1 (stage
1)
G Main PCB with extension PCB
H F3 MCB/Fuse 6.3 A (slow)
K Controller and sensor PCB
L X24 Slot for LON communication
module
M X31 Coding card slot
Wiring chamber, front
N
O
P
R
S
T
A
B
N Only type BW 302.A09,
BW 302.A120, BW 302.A150,
BW 302.A180, BW 302.A250,
WW 302.A125, WW 302.A155,
WW 302.A200, WW 302.A250,
WW 302.A300:
MCB/fuse, power circuit, compres-
sor 2 O Only type BW 302.A09,
BW 302.A120, BW 302.A150,
BW 302.A180, BW 302.A250,
WW 302.A125, WW 302.A155,
WW 302.A200, WW 302.A250,
WW 302.A300:
Contactor, compressor 2
Installation sequence
Overview of electrical connections
(cont.)
5848 164 GB
Installation