Viessmann BWC 201.B - Sheet 5: Expansion PCB

13
L
Output relay for instantaneous heating water
heater, stage 2
M
Output relay for instantaneous heating water
heater, stage 1
Sheet 5: Expansion PCB
0 1
2 3 4
5 6 7
8 9
0 1
2 3 4
5 6 7
8 9
viesmann
Expansion PCB
Sheet 5
2 1
1 2 3 4 1 2 1 12 3 4 5 6 7 23
-L1´
4.5
4.2
-225
-224-223
-222
-220
X1
A
B
Fig. 7
A
Ribbon cable to the controller and sensor PCB
B
Instantaneous heating water heater output relay,
stage 2
Connection and wiring diagram
Sheet 4: Main PCB (cont.)
6152053
Service