56
Heat pump control unit power supply 230 V~
L1
X3.18
N
X2.1
?
X1.1
A
1/N/PE
230 V / 50 Hz
max.16 A
A
Mains terminals inside the heat
pump control unit
Note
This supply must never be blocked.
■ Max. fuse rating 16 A
■ Standard tariff: No optional economy
tariff with power-OFF for the heat
pump control unit
■ Recommended power cable:
3 x 1.5 mm
2
■ Recommended power cable with
power-OFF for compressor/ instanta-
neous heating water heater:
5 x 1.5 mm
2
Compressor power supply (400 V~)
L1
400 V/50 Hz
?
L2
L3
N
PE
3/N/PE
L1
L2
L3
N
■ Fuse protection in accordance with the
compressor rating (see "specifica-
tion").
■ Economy tariff and power-OFF can be
applied.
■ No parameters need to be set when
applying economy tariffs with power-
OFF facility. The compressor is shut
down during the power-OFF time.
■ Recommended power cable:
5 x 4.0 mm
2
Max. cable length:
50 m
Power supply with power-OFF
Power-OFF without on-site load disconnection
The power-OFF signal is connected
directly to the heat pump control unit.
When power-OFF is enabled, the com-
pressor is "forced" off, and in the 2-stage
version (type BW + BWS),
both
com-
pressors are switched off.
Parameter
"Output for instant. heating
water heater at power-OFF 790A"
determines whether and at what stage
an instantaneous heating water heater (if
installed) remains operational during
power-OFF.
Installation sequence
Power supply
(cont.)
5546 267 GB
