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INSTALLATION
Installation
9.3.1 Minimum clearances
≥360
≥670
f Maintain the minimum clearances.
f
9.4
Heat source (air draw-off point)
- The air draw-off point must be free from flammable, highly
combustible gases and substances, as well as high levels of
dust.
- The intake air must not contain aggressive materials such as
chlorine, ammonia or sulphur.
- There should be a high average air temperature at the air
draw-off point.
- When selecting the air draw-off point, always factor in the
required air volume and air flow rate (see chapter "Specifica-
tion / Data table").
- If using ventilation accessories, the connection ducts must
have a minimum diameter of 160 mm.
- The total length of the supply air and extract air ducts must
not exceed 20 m. A maximum of three right-angled bends
may be installed. For each additional bend installed, the total
duct length must be reduced by 2.5 m.
- Always use profiles with lip seals when connecting an air
duct.
- Install the air ducts in straight lines. Avoid installing ducts
along sharp edges or around tight corners.
- Install the air ducts horizontally and sloping slightly to the
intake and discharge apertures. You may also install an
evaporation bag.
- Insulate the air duct and all connections in line with insula-
tion standards if used for waste heat or outside air to prevent
condensation on these components.
- If restricted space conditions mean that an air flow "short
circuit" could occur between the air discharge and air intake
in recirculation air mode, we recommend fitting a 45° bend
to the air discharge.
Material losses
!
If the air duct and its connections are not insulated,
condensate may form on the air duct depending on the
appliance operating mode. Condensate can damage the
appliance. Dripping condensate can damage furniture or
floor coverings.
f Insulate the air duct, including the air connector to
f
the appliance, so that it is vapour diffusion-proof.
www.stiebel-eltron.com
140
≥500
Material losses
!
There is a risk of frost damage if the appliance draws
in outdoor air and the temperature of this air may fall
below 0 °C.
Fit ventilation flaps with low resistance for outdoor instal-
lation. When the heat pump is idle, the ventilation flaps
prevent cold air flowing into the building. Otherwise the
appliance may enter a fault state (fault message Er57).
Note
The output data applies to recirculation air mode. If the
air is channelled through an air duct, the output and
efficiency data may fall.
10. Installation
WARNING Injury
!
Incorrect installation can lead to serious injury or ma-
terial losses.
Before any work, ensure sufficient clearances for the
installation.
Handle sharp-edged components carefully.
Note
The low weight of the appliance means that it can be
mounted on a wall.
f If mounting the appliance on a wall, only use the
f
supplied wall mounting bracket with anti-vibration
mounts.
10.1 Wall mounting bracket installation
Material losses
!
The appliance must be positioned horizontally to prevent
damage.
f When assembling the wall mounting bracket, ensure
f
that the rail supports are aligned horizontally.
f Ensure that the wall structure is able to bear the weight force
f
exerted by the heat pump plus wall mounting bracket.
f Select suitable screws and rawl plugs to secure the wall
f
mounting bracket on the wall.
f Mark out the positions of the holes to be drilled on the wall.
f
To do this, hold the rail supports against the wall at the re-
quired installation height.
f Ensure that no electrical cables are damaged through drilling
f
the holes.
f Drill the holes and insert rawl plugs.
f
f Secure the rail supports to the wall using the screws
f
provided.
f Ensure that the wall mounting bracket is flush with the wall.
f
f Check that the rail supports are horizontally and vertically
f
level, using a spirit level.
f Level the rail supports by undoing and tightening the screws.
f
f Tighten all screws.
f
WWS 20 |
51
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