Viessmann VITOCAL 300-G PRO Installation And Service Instructions Manual page 63

Overview of electrical connections
Plug sXG
Terminals Function
225.1 Heating circuit pump of the
heating circuit with mixer
M2
M2/HC2
r
225.2 Mixer motor control, heating
circuit M2/HC2
M2
Signal mixer CLOSE
225.3 Mixer motor control, heating
circuit M2/HC2
M2
Signal mixer OPEN
Installation sequence
(cont.)
Explanation
Connect the temperature limiter in series
as a maximum temperature limiter for
underfloor heating circuit (if installed).
Connection values:
■ Output: 100 W
■ Voltage: 230 V~
■ Max. switching current: 4(2) A
On-site connection, see separate "con-
nection and wiring diagram" sheet 130.
Use contactor, if required; see separate
"connection and wiring diagram"
sheet 131, sheet 132.
Connection values:
■ Output: 10 W
■ Voltage: 230 V~
■ Max. switching current: 0.2(0.1) A
On-site connection, see separate "con-
nection and wiring diagram" sheet 130.
Use contactor, if required; see separate
"connection and wiring diagram"
sheet 131, sheet 132.
Connection values:
■ Output: 10 W
■ Voltage: 230 V~
■ Max. switching current: 0.2(0.1) A
On-site connection, see separate "con-
nection and wiring diagram" sheet 130.
Use contactor, if required; see separate
"connection and wiring diagram"
sheet 131, sheet 132.
63