Viessmann Vitocal 300-G Installation And Service Instructions Manual page 78

Installation sequence
Electrical connections
Connecting a temperature limiter as maximum temperature limiter for under-
floor heating system
General connection
X2.N
X1.
?
A
B
C
A Connection on the main PCB (211.2
or 212.2 in accordance with the
table above)
B Temperature limiter
C Heating circuit pump
78
(cont.)
Connection with temperature limiter
(part no. 7151 728, 7151 729)
X2.N
X1.
M
1~
A Connection on the main PCB (211.2
B Temperature limiter
C Heating circuit pump
?
A
B
M
C
1~
or 212.2 in accordance with the
table above)
sÖ