Viessmann Vitocal 300-G Installation And Service Instructions Manual page 79

Connection of electrical components
Connection to heating circuit A1,
M2
A Terminals on PCB 2
B Temperature limiter (maximum
limit for underfloor heating sys-
tems)
C Heating circuit pump A1, M2
Installation sequence
(cont.)
Connection to heating circuit A1,
M2
A Terminals on PCB 2 (remove plug
on temperature limiter)
B Temperature limiter (maximum
limiter for underfloor heating sys-
tem, part no. 7151 728, 7151 729)
C Heating circuit pump A1, M2
79