Installation Room Requirements - Viessmann VITOCAL 350-G Series Installation And Service Instructions For Contractors

Preparing for installation
Siting and transport requirements
!
Please note
Impacts, compression and tensile loads can
cause damage to the outside panels of the
appliance.
Never put weight on the top, front or side panels
of the appliance.

Installation room requirements

!
Please note
Unfavourable ambient conditions can lead to
malfunctions and appliance damage.
The installation room must be dry and free from
the risk of frost:
Ensure ambient temperatures between 0 and
■
35 °C.
■ Max. 70 % relative humidity (corresponds to
an absolute humidity of approx. 25 g water
vapour/kg dry air)
Danger
Dust, gases and vapours can be damaging to
health and trigger explosions.
Avoid dust, gases and vapours in the installation
room.
!
Please note
Overloading the floor can result in damage to
the building structure.
Observe the permissible floor load. Take the
total weight of the appliance into account.
Total weight
Type Weight in kg
BW 351.B20
351.B27
351.B33
351.B42
Type Weight in kg
BWS 351.B20
351.B27
351.B33
351.B42
To prevent the transmission of structure-borne noise,
never site the appliance above ceilings with wooden
joists, e.g. in the attic.
12
(cont.)
!
Please note
Tilting the compressor at a steep angle inside
the heat pump can result in appliance damage.
Max. tilting angle: 45° for a very short time
Minimum room volume (to EN 378)
Type
BW 351.B20
■
BWS
■
351.B27
351.B33
351.B42
Minimum clearances for 1-stage (type BW 351.B)
≥ 400
270
Fig. 3
285
310
Clearance subject to on-site installation and site
A
315
conditions
Note
265
Observe clearances for installation and mainte-
■
280
nance.
305 Additional strain relief clamps are required for the
■
power cables if the clearance behind the heat pump
310
is more than 80 mm.
Refrigerant Minimum
charge in kg room volume
3
in m
5.3
7.0
8.6
8.7
A
≥ 400
12.1
15.9
19.6
19.8