30
Control and power circuit of the instantaneous
heating water heater
211.3
224.4
X2.N
N
L3
L2
L1
?
!
?
A
B
Fig. 18
A
Instantaneous heating water heater
B
Connection to the main PCB and expansion PCB
211.3 stage 1
224.4 stage 2
Immersion heater EHE 400 V~
224.7
X2.N
N
L3
L2
L1
?
B
A
Fig. 19
A
Immersion heater EHE, power supply 3/N/PE
400 V/50 Hz
B
Terminals of the heat pump control unit
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.)
5855006
Installation
