Viessmann Vitocal 222-A - Page 39

39
Plug
sXG
Terminals Function Explanation
225.1
M2
r
Heating circuit pump of the heating
circuit with mixer M2/HC2
Connect a temperature limiter to restrict the maximum
temperature for underfloor heating circuits (if installed)
in series.
Connection values:
■
Output: 100 W
■
Voltage: 230 V~
■
Max. control current: 4(2) A
225.2
M2
Mixer motor control, heating circuit
M2/HC2
Signal mixer CLOSE
Connection values:
■
Output: 10 W
■
Voltage: 230 V~
■
Max. control current: 0.2(0.1) A
225.3
M2
Mixer motor control, heating circuit
M2/HC2
Signal mixer OPEN
Connection values:
■
Output: 10 W
■
Voltage: 230 V~
■
Max. control current: 0.2(0.1) A
Installation sequence
Electrical connection (cont.)
5831412
Installation