Viessmann Vitocal 300-G Pro BW 302.D090, Installation And Service Instructions For Contractors

Page: 38 / 92

38
Plug sXG
Clamps Function Explanation
225.1
M2
r
Heating circuit pump for 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
Connection, see separate "Connection and wiring dia-
gram".
Use contactor if required, see separate "Connection
and wiring diagram".
225.2
M2
Switching of the mixer motor, heating
circuit M2/HC2
Mixer CLOSE signal Connection values:
■
Output: 10 W
■
Voltage: 230 V~
■
Max. control current: 0.2(0.1) A
Connection, see separate "Connection and wiring dia-
gram".
Use contactor if required, see separate "Connection
and wiring diagram".
225.3
M2
Switching of the mixer motor, heating
circuit M2/HC2
Mixer OPEN signal Connection values:
■
Output: 10 W
■
Voltage: 230 V~
■
Max. control current: 0.2(0.1) A
Connection, see separate "Connection and wiring dia-
gram".
Use contactor if required, see separate "Connection
and wiring diagram".
Installation sequence
Electrical connections
(cont.)
5838144
Installation