Viessmann Vitocal 200-G Series Installation And Service Instructions Manual page 45

Power supply
(cont.)
X3.7
A
X40
X3.6
3
≈
3
kWh
G
3/N
H
F
4
E
Fig. 38 Diagram excluding fuses and RCD
Heat pump control unit
A
Instantaneous heating water heater
B
Compressor
C
Economy tariff meter
D
Feed: TNC system
E
Backup fuse, ripple control receiver
F
Ripple control receiver (contact open: Power-OFF
G
enabled)
Premium tariff meter
H
Power supply with power-OFF, 400 V appliances: 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. The compressor and instanta-
neous heating water heater are "forced" off when
power-OFF is enabled.
Note
Observe the technical connection conditions of the rel-
evant power supply utility.
B C
7 3
3
kWh
3/N
D
4
4
Installation sequence
45