Viessmann WB2B 45 - Page 46

Control Connections
46
Electrical Connections (continued)
Accessories electrical connections
See the following pages for connection to the individual accessories.
5418 909 v1.6
N
40962035100
12
3
4
56
7
X4
X3
L
145
145
5
2
230 VAC
Boiler Control Board GC130
X9.3
X9.4
X
X11
LON
KMK
9
X
8
X
7
LON
X2
LON
X1
1 20 40
NL
145144143
50
202120A
28
L G N
40
L2
NLNLNL
EXTERNAL
DEMAND
EXTERNAL
SIGNAL
0--10 V
-- +
120VAC
M
120VAC
M
120VAC
M M
120VAC
120VAC
DHW
RE--CIRC.
PUMP
FAULT
ALARM
OUTPUT
BOILER
PUMP
DHW
PUMP
SYSTEM
PUMP
1 2 3 1 2 3 1 2 3
L1 G N
31 2
145
SAFETY DEVICE
LOW WATER CUT--OFF
120VAC
RECEPTACLE
WALL
--TYPICAL
A
P2
P1
L2
L1
SWITCH
DISCONNECT
MAIN POWER SUPPLY
120V, 60HZ, 12A
N
MAIN
L
G
31 2
145
31 2
144
31 2
143
50
202120A40
NL
Vitotronic 200--H
HK1M
LON
120/230
Transformer
Fig. 40
Power/Pump module