Operating Instructions and Installation Instructions

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Installation - for qualied contractors
9.2 Water installation
◦ A safety valve is not required.
» Flush the water line thoroughly.
» Ensure that the ow rate (see chapter “Specication /
Data table”, On) for switching on the appliance is
achieved. If the ow rate is not achieved, remove the
ow limiter (see chapter “Installation / Removing the
ow limiter”).
» Increase the mains water pressure if the required
ow rate is not achieved with the draw-off valve fully
opened.
Taps
Use appropriate pressure taps. Open taps are not per-
mitted.
Note
Never use the shut-off valve in the cold water inlet
to reduce the ow rate. It is intended to shut off the
appliance.
Permissible water pipe materials
◦ Cold water inlet pipe:
Galvanised steel pipe, stainless steel pipe, copper
pipe or plastic pipe
◦ DHW outlet pipe:
Stainless steel pipe, copper pipe or plastic pipe
!
Material losses
If plastic pipework systems are used, take into ac-
count the maximum inlet temperature and the max-
imum pressure (see chapter “Specication / Data
table”).
Flexible water connection lines
» If the appliance is installed with exible water con-
nection lines, ensure that the bayonet ttings of
the pipe bends do not become twisted inside the
appliance.
» Secure the back panel at the bottom with two addi-
tional screws.
10. Installation
10.1 Standard installation
◦ Electrical connection from above; installation on un-
nished walls
◦ Water connection, installation on unnished walls
◦ DDLE LCD 18/21/24: Connected load 21 kW preset
For further installation options, see chapter “Installation
alternatives”:
◦ Electrical connection from below on unnished walls
◦ Electrical connection for nished walls
◦ Connecting a load shedding relay
◦ Undersink installation, water connections – from
above
◦ Water installation for nished walls
◦ Operation with preheated water
◦ Temperature limit
Opening the appliance
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» Open the appliance by releasing the snap lock.
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T-
so
X1
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» Remove the back panel by pressing the two locking
hooks and pulling the lower part of the back panel
forwards.
Preparing the power cable
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≥ 30
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Fitting the wall mounting bracket
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» Mark out the holes for drilling with the installation
template. If the appliance is to be installed with water
connections on nished walls, also mark out the x-
ing holes on the lower part of the template.
» Drill the holes and secure the wall mounting bracket
with 2 screws and 2 rawl plugs (screws and rawl
plugs are part of the standard delivery).
» Fit the threaded stud provided.
» Mount the wall mounting bracket.