21
Installation – for qualified contractors
Note
»
Mount the appliance on the wall.
The wall must
have a sufficient load-bearing capacity.
9.2
Water installation
◦
A safety valve is not required.
» Flush the water line thoroughly.
»
Ensure that the flow rate for switching on the appli
-
ance is achieved (see chapter "Installation / Spec-
ification / Data table", On).
If the flow rate is not
achieved, remove the flow limiter (see chapter "In
-
stallation / Installation, Removing the flow limiter").
»
If the required flow 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 flow 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
-
ification / Data table").
Flexible water connection lines
»
If the appliance is installed with flexible water con
-
nection lines, ensure that the bayonet fittings 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-
finished walls
◦ Water connection on unfinished 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 unfinished walls
◦ Electrical connection on finished walls
◦
Connecting a load shedding relay
◦
Undersink installation, water connections from above
◦ Water installation on finished walls
◦
Operation with preheated water
◦
Temperature limit
Opening the appliance
D
00000
41
61
5
» Open the appliance by releasing the snap lock.
NT
T-
so
X1
26
_0
2_0
2_0
76
2
» 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
26
_0
2_0
2_0
88
7
Fitting the wall mounting bracket
26
_0
2_0
2_0
97
2
» Mark out the holes for drilling with the installation
template. If the appliance is to be installed with water
connections on finished walls, also mark out the fix
-
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.
Summary of Contents for 222388
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