6.3
Description of the safety unit
9 Isolation valve
17 Drain valve
27 Non-return valve
28 Domestic cold water inlet
29 Pressure reducer
30 Safety unit
54 End of the discharge pipe free and visible 2 to 4 cm above the flow
funnel
55 Domestic hot water diaphragm safety valve, sealed and calibrated
to 7 bar
6.4
Electrical connection diagrams with external unit
6.4.1
Electrical connection without off-peak/peak rate cables
Fig.22
C1 C2
538 kW/h
1
0
15 / 45 A
500 mA
TEST
16 A
40 A
30
mA
L
N
Electrical
Heating
Timer 1
On Off
Timer 2
On Off
Set Temp
Error
Electrical
Heating
Heating
Timer /
Clock
Enter
MW-2000381-2
HN
HL
4
3
2
5
7
6
1
1 Domestic hot water tank
2 Outdoor unit:
HL: Phase of the immersion heater power supply
HN: Neutral of the immersion heater power supply
3 Control panel
4 Electricity meter
5 Connection circuit breaker
6 AC-type differential circuit breaker
7 Circuit breaker
Fig.21
L000370-C
(54)
2 cm
9
9
55
29
17
27
30
28
6 Connecting diagrams
7689749 - v03 - 25112019
27
