Viessmann Vitocal 350-A Installation And Service Instructions Manual page 217

Safety chain, control circuit, main power...
1x3.9
1x3.8
2
26
1
26
6
116
5
116
4
2
3
116
116
1
4
X3
3
4
7
8
3
X3
2x8.1
K1
2x8.2
1
X4
2
X4
K2
7
X3
K1
2 N'
I Thermal circuit breaker - fan
J Message input
K Safety high pressure switch
L Low pressure message
M Control high pressure message
2x10.7
2x10.12
2x10.13
2x10.14
2x10.15
N For type AWH-I/AWH-O 120 only:
P For type AWH-I/AWH-O 120 only:
Connection and wiring diagrams
(cont.)
Motor protection
Electronic motor control
217