Viessmann Vitocal 242-S Installation And Service Instructions Manual page 53

Electrical connection
Heating circuit without mixer A1/
HC1
■ Without heating water buffer cylin-
der
■ With heating water buffer cylinder
Connecting the temperature limiter,
part no. 7151 728, 7151 729 B to
mixer extension kit
A
sÖ
B
M
C
1~
A Connect plug sÖ to mixer extension
kit
B Temperature limiter
C Heating circuit pump for heating cir-
cuit with mixer
Internal unit: Expansion PCB on main PCB (function compo-
nents 230 V~)
Make no on-site connections.
Internal unit: Luster terminals (message and safety connections)
Set the required parameters during com-
missioning; see from page 83.
(cont.)
Connection
A to control
unit
211.2
212.2
sÖ
Installation sequence
Circulation pump C
Secondary pump
Heating circuit pump A1/
HC1
53