42
Instantaneous heating water heater power supply 400 V~
!
Please note
Operating the instantaneous heating water
heater without heating water damages the indi-
rect coil.
Only connect the instantaneous heating water
heater to the power supply after the heating sys-
tem has been completely filled and vented.
L1
L2
L3
N
L1
L2
L3
3/N/PE 400 V/50 Hz
N
Fig. 31
■
Economy tariff and power-OFF can be used
■
No parameters need to be set when using economy
tariff with power-OFF. The compressor is shut down
during the power-OFF time.
Cable
Max. cable length
Fuse rating
5 x 2.5 mm
2
25 m
16 A
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.
X40
X3.7
X3.6
C
B
A
D
H
F
G
5
5
3
3
4
4
3
3/N
3/N
≈
4
E
kWh
kWh
Fig. 32
Diagram excluding fuses and RCD
A
Heat pump control unit
B
Instantaneous heating water heater
C
Compressor
D
Economy tariff meter
E
Feed: TNC system
F
Backup fuse, ripple control receiver
G
Ripple control receiver (contact open: Power-OFF
enabled)
H
Premium tariff meter
Installation sequence
Power supply
(cont.)
6153640
Installation
