Viessmann Vitodens 200-W Series Installation Instructions Manual page 46

Control Connections
Electrical Connections
Connection between the Power/Pump module and boiler
MAIN POWER SUPPLY
120V, 60HZ, 12A
N G L
MAIN
DISCONNECT
SWITCH
L2
L1
120/230 Transformer
P1
P2
A
120VAC
WALL
RECEPTACLE
5
LON LON
X
X2
X1
7
KMK1 KMK2
X8.10
X1
X8.11
1 2 3 4
X
8
X
9
A8
X11
LON
KMK
Fig. 39
46
(continued)
Power/Pump module
L N L N L
L N
40 20A 21 20
40 20A 21 20
L2 L1G N
145
X4 7 6 5 4 3 2 1 100 35
X3
Boiler Control Board GC131
1.
1 2 3 1 2 3 1 2 3
143 144 145
N L N
143
144 145
50
1 2 3 1 2 3 1 2 3
28
50
L G N
L N
20
230 VAC
40
20 96
2.
1. Remove and discard the green
factory test lead plug
40
equipped) from the boiler control
board.
2. Install the Power/Pump module plug
onto the boiler control board.
40
Legend
120 VAC supply
Power supply (230 VAC)
Boiler pump
KM-BUS to Power/Pump module
(if