Viessmann Vitocal 300-G Installation And Service Instructions Manual page 35

Electrical connection
Plug
sXF
Terminals Function
224.7
Circulation pump for DHW reheating
or
Control of immersion heater (in DHW
cylinder)
Immersion heater EHE 400 V~
224.7
B
X2.N
A
Fig. 28
Immersion heater EHE, power supply 3/N/PE
A
400 V/50 Hz
B Terminals of the heat pump control unit
Plug
sXG
Terminals Function
225.1 Heating circuit pump of the heating
circuit with mixer M2/HC2
M2
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
(cont.)
L1 L2 N
L3
?
Explanation
Connection values
Output: 100 W
■
Voltage: 230 V~
■
Max. switching current: 4(2) A
■
Explanation
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 values:
Output: 10 W
■
Voltage: 230 V~
■
Max. control current: 0.2(0.1) A
■
Connection values:
Output: 10 W
■
Voltage: 230 V~
■
Max. control current: 0.2(0.1) A
■
Installation sequence
35