Viessmann VITOCAL 300-A Installation And Service Instructions Manual page 85

Electrical connections in the control unit
Heating circuit
Heating circuit A1 without heating
water buffer cylinder
Heating circuit A1 with heating water
buffer cylinder
Heating circuit M2
Connection with temperature lim-
iter (part no. 7151 728, 7151 729) to
extension kit for heating circuit
with mixer
A Plug sÖ for extension kit
B Temperature limiter
C Heating circuit pump M3
Further components
Equipment
Directly controlled mixer motor,
heating circuit M2, without KM
BUS (page 51)
(cont.)
Connection to PCB 2
2X8.7
2X7.9
2X8.11
Connection Required parameters:
Parameter (ID) Ó Setting
2X8.9VOPEN "System definition"
&
1X1.? "System diagram" (7000)
Ó with heating circuit M2
1X2.N
2X8.10vCL-
OSE
(see page 51)
Installation sequence
85