INSTALLATION
Installation
www.stiebel-eltron.com WWK 223-303 electronic | 19
ENGLISH
Minimum clearances
≥150
≥350
≥400
≥400
≥500
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f Maintain the minimum clearances.
!
Material losses
The appliance must be positioned vertically to avoid
damage.
f Level the appliance horizontally using the height-ad-
justable feet.
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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.
10.1 Water connection
!
Material losses
Carry out all water connection and installation work in
accordance with regulations.
!
Material losses
The corrosion protection provided by the anode can only
be guaranteed when the electrical conductivity of the do-
mestic hot water is within the limits stated in the chapter
"Specification/ Data table".
Cold water line
Galvanised steel, stainless steel, copper and plastic are approved
materials.
A safety valve is required.
DHW line
Stainless steel, copper and plastic pipework are approved.
!
Material losses
When using plastic pipework, observe the manufacturer's
data and the chapter "Specification/ Fault conditions".
f Thoroughly flush the pipework before connecting the ap-
pliance. Foreign bodies, such as welding pearls, rust, sand
or sealant can impair the operational reliability of the
appliance.
!
Material losses
To protect the connections against corrosion the water
connection must be made with flat gaskets. The use of
hemp on connections is not permissible.
The insulated screw fittings included in the standard
delivery serve to prevent and insulate against cathodic
scaling due to highly conductive water.
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2 31 4
1 Union nut
2 Insulating sleeve
3 Flanged pipe
4 Gasket
f Using the gaskets, insulating sleeves and union nuts provid-
ed, connect the flanged pipes included in the standard deliv-
ery to the "Cold water inlet" and "DHW outlet" connections.
f Check the insulated screw fitting for tightness.
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