Terminal Strip For System Components - Viessmann Vitocal 300-G Pro Installation And Service Instructions For Contractors

Installation sequence
Electrical connections
Contactors for primary and secondary pumps
D
EEV PCB
E
X24 Slot for LON communication module
F
Controller and sensor PCB (Heat pump control
G
unit)
Wiring chamber, front
Fig. 24
Note
Diagram without terminal covers (see also page 70)
ON/OFF switch (all types)
M ■
Power supply, power circuit, compressor
■
3 x 400 V/50 Hz (only type BW 301.C090,
BW 301.C120, BW 302.C090, BW 302.C110 and
BW 302.C140, see also pos.
MCB/fuse, power circuit, compressor 2 (only type
N
BW 302.C090, BW 302.C110, BW 302.C140,
BW 302.C180 and BW 302.C230)

Terminal strip for system components

■ Primary pump(s):
On-site connection, see separate "Connection and
wiring diagram".
Factory wiring on main and expansion PCB (termi-
nals 211.1, 224.2), see separate "Connection and
wiring diagram".
32
(cont.)
in fig. 23)
A
F3 Fuse 6.3 A (slow)
H
Main PCB with expansion PCB
K
X31 Coding card slot
L
MCB/fuse, power circuit, compressor 1
P
Soft starter, compressor 2 (only type
R
BW 302.C090, BW 302.C110, BW 302.C140,
BW 302.C180 and BW 302.C230)
MCB/fuse, power circuit, system components (con-
S
sumers at terminal strip
MCB/fuse, control circuit (see separate "Connec-
T
tion and wiring diagram")
Soft starter, compressor 1
U
■ Secondary pump(s):
On-site connection, see separate "Connection and
wiring diagram".
Factory wiring on main and expansion PCB (termi-
nals 211.2, 224.3), see separate "Connection and
wiring diagram".
, see fig. 23)
C