Operating instructions

34
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 control unit. The
compressor and instantaneous heating
water heater (accessory) are "forced" off
when power-OFF is enabled.
Note
Observe the technical connection condi-
tions of the relevant power supply util-
ity.
Vitocal 242-G, 400 V~
C
B
A
≈
F H
5
4
3
4
4
3
3/N
3/N
G
K
4
kWh
kWh
3
E
D
X3.7
X3.6
Diagram excluding fuses and RCD.
A
Control unit (for connection to luster
terminals, see page 125)
B
Instantaneous heating water heater
(accessory)
C
Compressor
D
Control unit power supply
E
Main isolator
F
High tariff meter
Installation sequence
Power supply
(cont.)
5441 603 GB