Power Supply With Power-Off: With On-Site Load Disconnect - Viessmann VITOCAL 200-G Series Installation And Service Instructions Manual

Installation sequence
Power supply
(cont.)
Note
Observe the technical connection requirements of the
relevant power supply utility.
400 V appliances: Type BWC 201.A
X3.7
A
X3.6
3
D
3
G
kWh
E
3/N
F
4
Fig. 19 Diagram excluding fuses and RCDs
Heat pump control unit
A
Instantaneous heating water heater (accessories)
B
Compressor
C
Heat pump control unit power supply
D
Premium tariff meter
E
Ripple control receiver backup fuse
F
Ripple control receiver (contact open: Power-OFF
G
enabled) TNC system feed
H Economy tariff meter
Feed: TNC system
K

Power supply with power-OFF: With on-site load disconnect

The power-OFF signal is connected to the on-site con-
tactor of the economy tariff power supply and to the
heat pump control unit. When power-OFF is enabled,
the compressor and the instantaneous heating water
heater (accessories) are "forced" off.
Note
Observe the technical connection requirements of the
relevant power supply utility.
28
B C
5
3
kWh
3/N
H
4
4
K
230 V appliances: Type BWC-M 201.A
X3.7
A
X3.6
3
D
4
kWh
G
E
1/N
F
Fig. 20 Diagram excluding fuses and RCDs
Heat pump control unit
A
Instantaneous heating water heater (accessories)
B
Compressor
C
Heat pump control unit power supply
D
Premium tariff meter
E
Ripple control receiver backup fuse
F
Ripple control receiver (contact open: Power-OFF
G
enabled) TNC system feed
Economy tariff meter
H
Feed: TNC system
K
B C
7
kWh
1/N
H
K
3