Viessmann Vitocal 300-G BW, Installation And Service Instructions Manual

Page: 180 / 216

180
A
1
M
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x x
x
x
x
x
= x
= x
x
K
B
C
D
E
F
G
H
L
1 Terminal 1 on the 10-pole terminal
block behind the contact shield (see
page 59)
A Power supply
B Connection, control circuit (part 1),
see page 182
C External demand
D Fault message, lag heat source
E Flow switch
F External blocking
G Power-OFF
H Message input, power-OFF
K Switching contact, three phase
monitor
L
Message input, three phase monitor
M
Connection, safety chain (part 2),
see page 181
Connection and wiring diagrams
Safety chain (part 1)
5368 522 UAE