44
Power supply with power-OFF: Without on-site load disconnect
The power-OFF signal is connected directly to the heat
pump control unit. The compressor is "forced" off when
power-OFF is enabled.
Parameter
"Output for instant. heating water heater
at power-OFF 790A"
determines whether and at what
stage an instantaneous heating water heater remains
operational during the power-OFF period.
Note
Observe the technical connection conditions of the rel-
evant power supply utility.
X3.7
X3.6
3
3
4
4
3
3/N
3/N
≈
4
kWh
kWh
5
3
(400 V~)
7 (230 V~)
X3.18/X2.1/X1.1
Fig. 44
Diagram excluding MCB/fuses and RCD
A
Heat pump control unit (internal unit, luster termi-
nals, see chapter "Internal unit: Overview of con-
nections")
B
Instantaneous heating water heater
C
Heat pump compressor (external unit)
D
Heat pump control unit power supply: See chapter
"Heat pump control unit power supply 230 V~".
E
Premium tariff meter
F
Ripple control receiver backup fuse
G
Ripple control receiver (contact open: power-OFF
enabled)
Feed: TN-C system
H
Economy tariff meter
K
Feed: TN-C system
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. 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.
Installation sequence
Power supply
(cont.)
5700 582 GB
Installation
