Siting Requirements - Viessmann Vitocal 350-G Installation And Service Instructions For Contractors

Preparing for installation
Requirements regarding on-site connections
Install hydraulic connections on site
stress-free.
Cable lengths in the heat pump plus wall clearance:
Type
Heat pump control unit pow-
er supply (230 V~)
Compressor power supply
(400 V~)
Additional connecting ca-
bles
Recommended power cables for all types:
Component
Heat pump control unit (230 V~)
■ Without power-OFF contact
■ With power-OFF contact
Compressor (400 V~)
Instantaneous heating water
heater (400 V~, if installed):

Siting requirements

!
Please note
Prevent damage to the appliance
during handling.
Never put weight on the top, front
or side panels of the appliance.
Installation room requirements
!
Please note
The installation room must be dry
and free from the risk of frost.
Ensure ambient temperatures
between 0 and 35 °C.
22
BW and BWC
1.0 m
1.0 m
1.0 m
Cable cross-section
2
3 x 1.5 mm
2
5 x 1.5 mm
2
5 x 2.5 mm
2
5 x 2.5 mm
!
!
(cont.)
BWS
The power is supplied via
connecting cable.
1.0 m
Connecting cable
Max. cable length
40 m
40 m
50 m
50 m
Please note
Tilting the compressor at a steep
angle inside the heat pump can
result in appliance damage.
Max. tilting angle 45 °
Please note
Avoid risks of explosion due to
dust, gases and vapours.
Avoid dust, gases and vapours in
the installation room.