INSTaLLaTION
appliance installation
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| WPL 15 IKS | WPL 25 IK
www.stiebel-eltron.com
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After routing the condensate hose, check that the condensate
can drain correctly.
If required, you can mount a ribbon heater on the condensate pan
and the condensate hose on site.
Note
We recommend that you install a ribbon heater if the rou-
ting of the condensate hose means it is at risk of frost or is
fully exposed to the elements. If the appliance is mounted
on a wall mounting bracket or T-support, a ribbon heater
must be fitted. See also chapter "Electrical connection /
Outdoor unit".
Depending on the weather conditions, condensate may form on
the sheet metal parts of the outdoor unit which cannot be chan-
nelled away via the condensate drain. It is therefore possible that
condensate may drip from the unit.
10.4 Installing supply lines and supply cables
Supply lines and supply cables comprise all electrical cables and
refrigerant lines that run between the internal and external unit.
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Only use weather-resistant cables.
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When installing refrigerant lines, separate them with diffusi-
on-proof thermal insulation.
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Provide thermal insulation in accordance with applicable
regulations.
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Protect supply lines and cables routed along an external wall
from moisture, damage and UV radiation by routing them
through a cable duct.
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Protect the supply lines and cables routed through the
ground from moisture and damage by routing them through
a conduit.
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Please also observe chapter „Installing refrigerant lines“.
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Protect all pipe fixings and wall transitions with anti-vibrati-
on insulation.
≥ 20 mm
> 1%
26
�0
6�
01
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63
3
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Install wall outlets with a slight slope to the outside.
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Seal the wall outlets with suitable sealant.
10.5 Installing refrigerant lines
!
Material damage
Prevent dirt and moisture from penetrating the refrige-
rant circuit. For this purpose, install the refrigerant lines
just before the system is commissioned.
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Cut the pipes using suitable tools without creating
any swarf or burrs. Prevent the ingress of swarf into
the pipes.
Where possible, carry out the installation steps in one go
to prevent any contamination from entering refrigerant
lines between individual steps.
10.5.1 Safety
WARNING Burns
Work on the refrigerant circuit and the split lines must
only be carried out by qualified contractors. The cont-
ractor must be certified to ChemKlimaSchutzV Category I
[or local regulations].
WARNING Burns
Wear suitable safety goggles and gloves when handling
refrigerant.
Note
Observe the appropriate safety instructions and guide-
lines during service, modification, repair and similar
work. Observe the accident prevention instructions in
particular.
10.5.2 Notes on the installation of refrigerant lines
Please refer to chapter „Specification / Data table“ for the nominal
dimension of refrigerant lines.
!
Material damage
Only use copper pipes that are suitable for refrigerant
(DIN 12735-1). Observe the wall thicknesses. In the case
of pipes with thin walls, the pressure resistance may be
insufficient. There is a risk of burst pipes.
When installing the refrigerant lines, observe the following in-
formation:
- Never saw refrigerant lines; use a pipe cutter instead. Always
keep the pipe ends closed.
- Deburr the ends of the pipes.
Note
Bend the refrigerant lines only once into their final po-
sition. Refrigerant lines that are bent several times can
leak or break.
- Use the largest possible pipe bends to avoid high pressure
losses.
The refrigerant lines can generate general and flow noise.
