Operating Instructions and Installation Instructions

21
Installation – for qualied contractors
Note
» Mount the appliance on the wall. The wall must
have a sufcient load-bearing capacity.
9.2 Water installation
◦ A safety valve is not required.
» Flush the water line thoroughly.
» Ensure that the ow rate for switching on the appli-
ance is achieved (see chapter "Installation / Spec-
ication / Data table", On). If the ow rate is not
achieved, remove the ow limiter (see chapter "In-
stallation / Installation, Removing the ow limiter").
» If the required ow rate is not achieved when the
draw-off valve is fully opened, increase the water line
pressure.
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. The shut-off valve is intended
to shut off the appliance.
Permissible water line materials
◦ Cold water inlet line:
Galvanised steel pipe, stainless steel pipe, copper
pipe or plastic pipe
◦ DHW outlet line:
Stainless steel pipe, copper pipe or plastic pipe
!
Material losses
If plastic pipework is used, take into account the
maximum inlet temperature and the maximum per-
missible pressure (see chapter "Installation / Spec-
i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 on unnished walls
◦ DDLE Basis 18/21/24: Connected load 21 kW preset
For further installation options, see chapter "Installation /
Installation / Installation options":
◦ Electrical connection from below on unnished walls
◦ Electrical connection on nished walls
◦ Connecting a load shedding relay
◦ Undersink installation, water connections from above
◦ Water installation on nished walls
◦ Operation with preheated water
◦ Temperature limit
Opening the appliance
D0000041615
» Open the appliance by releasing the snap lock.
NT
T-
so
X1
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» Remove the back panel by pressing the two locking
hooks and pulling the lower section of the back panel
forwards.
Preparing the power cable
160
≥ 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 in 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.