*****INTERNAL*****30 R_D proof- 26.10.2022 / 09:15:46- VaillantGroup\DOC-agt\Brand\VIH_QW_190_6\ENG\OI-II_GB_0020291525
34 Installation and maintenance instructions 0020291525_04
6.7.2 1~/230V dual power supply
1
2
3
4
5
6
L1
L1
L2
L3
N
X300X310
X311
2
1
L1
N
3
4
1
2
N
L
N
L
N
L
1. Note the specifications on the sticker on the electronics
box.
2. Install two disconnectors for the product.
3. Use the enclosed 3-pole power supply cable and an
additional 3-pole power supply cable with a temperat-
ure resistance of 90 °C.
– Note that commercially available power supply
cables do not usually have sufficient temperature
resistance.
4. Connect the enclosed power supply cable (from the
heat pump electricity meter) to connection X300.
5. Remove the 2-pole bridge between connections X310
and X311.
6. Connect the additional power supply cable (from the
household electricity meter) to connection X311.
7. Use the strain relief clamps to secure the cables in
place.
6.8 Establishing the power supply, 3~/400V
▶ Determine the type of connection:
Case Connection type
Energy supply company lockout not
provided
Single power supply
Energy supply company lockout
provided, shutdown via connection
S21
Energy supply company lockout
provided, shutdown via partition
Dual power supply
6.8.1 3~/400V single power supply
1
2
3
4
5
6
L1
L1
L2
L3
N
L1
L2
L3
N
X300X310X311
2
1
L1
N
3
4
1
2
N
L
L
1. Note the specifications on the sticker on the electronics
box.
2. Install a disconnector for the product.
3. Use the enclosed 5-pole power supply cable.
4. Remove the 2-pole bridge from between contacts L1
and L2 on connection X311.
5. Connect the power supply cable to connection X300.
6.8.2 3~/400V dual power supply
1
2
3
4
5
6
L1
L1
L2
L3
N
X300X310X311
2
1
L1
N
3
4
1
2
N
L
L
N
L
L1
L2
L3
N
1. Note the specifications on the sticker on the electronics
box.
2. Install two disconnectors for the product.
3. Use the enclosed 5-pole power supply cable (low tariff)
and the enclosed 3-pole power supply cable (high tar-
iff).
4. Remove the 2-pole bridge from between contacts L1
and L2 on connection X300.
5. Remove the 2-pole bridge between connections X310
and X311.
6. Connect the 5-pole power supply cable (from the heat
pump electricity meter) to connection X300.
7. Connect the 3-pole power supply cable (from the
household electricity meter) to connection X311.
8. Use the strain relief clamps to secure the cables in
place.
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