22
■ Install hydraulic connections on site
stress-free.
■ Establish hydraulic connections
between heat pump stage 1 and stage
2 on site.
■ All required components (with a suita-
bly designed plate heat exchanger) for
the cooling circuit must be provided on
site.
Cable lengths in the heat pump plus wall clearance:
Type
BW 351.A18
BWS 351.A18
Heat pump control unit pow-
er supply (230 V~)
1.0 m
A connecting cable is used
for the power supply
Compressor power supply
(400 V~)
1.0 m
1.0 m
Additional power cables
1.5 m
Connecting cable
Recommended power cables:
Type
Heat pump con-
trol unit (230 V~)
Compressor (400 V~)
Cable cross-sec-
tion
Cable cross-sec-
tion
Max. cable length
BW 351.A18
3 x 1.5 mm
2
(5 x 1.5 mm
2
with
power-OFF)
4 x 4.0 mm
2
50 m
BWS 351.A18
—
4 x 4.0 mm
2
50 m
Note
An instantaneous heating water heater
(on site) can only be installed outside
the heat pump. The flow temperature
sensor system must be installed in the
direction of flow downstream of the
instantaneous heating water heater.
Preparing for installation
Requirements regarding on-site connections
(cont.)
5546 267 GB
