Viessmann Vitocal 350-A Installation And Service Instructions Manual page 111

Power supply
(cont.)
1X3.7
A
1X3.6
3
3
kWh
3/N
D
4
Shown excluding fuses and RCD
A Heat pump control unit
B Instantaneous heating water heater
(accessory)
C Compressor
D High tariff meter
Power-OFF with on-site load discon-
nection
The power-OFF signal is connected to
the on-site contactor of the low tariff
power supply and in the heat pump con-
trol unit. The compressor and instanta-
neous heating water heater (accessory)
are "forced" off when power-OFF is ena-
bled.
≈
E
F
4
G
Installation sequence
B
C
5
3
kWh
3/N
H
4
E Ripple control receiver (contact
open: power-OFF enabled)
F Backup fuse ripple control receiver
G TNC system feed
H Low tariff meter
Note
Observe the technical connection condi-
tions of the relevant power supply util-
ity.
4
111