22
Installation
WARNING Electrocution
Ensure that the appliance is earthed.
!
Material losses
Observe the type plate.
The specified voltage must
match the mains voltage.
» Connect the power cable to the mains terminal (see
chapter «Specification / Wiring diagram»).
Fitting the lower back panel
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L3’
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L2’
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L1’
2
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» Position the lower back panel onto the main back
panel and click into place.
»
Align the mounted appliance by loosening the fixing
toggle, aligning the power supply and back panel,
and then re-tightening the fixing toggle.
If the back
panel is not flush with the wall, the appliance can be
secured at the bottom with two additional screws.
10.2
Alternative installation options
10.2.1
Electrical connection from below on
unfinished walls
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» Fit the cable grommet.
!
Material losses
If you break out the wrong knock-out by mistake, you
should use a new back panel.
» Break out the cable grommet knock-out in the
back panel.
Deburr the sharp edges with a file if
necessary.
» Reposition the mains terminal in the appliance from
the top to the bottom.
» Push the back panel over the threaded stud and the
cable grommet. Pull the cable grommet by the lock-
ing hooks into the back panel using pliers, until both
locking hooks audibly click into place.
»
Press the back panel firmly into place and lock the
fixing toggle by turning it clockwise through 90°.
10.2.2
Electrical connection on finished walls
Note
This type of connection changes the protection rat
-
ing of the appliance.
»
Change the type plate.
Cross out "IP 25" and
mark the box "IP 24".
Please use a ballpoint pen
to do this.
!
Material losses
If you break out the wrong knock-out by mistake, you
should use a new back panel.
» Cleanly cut or break out the required cable entries in
the back panel (for positions, see chapter «Specifi
-
cation / Dimensions and connections»). Deburr the
sharp edges with a file if necessary.
» Route the power cable through the cable grommet
and connect it to the mains terminal.
10.2.3
Connecting a load shedding relay
Install a load shedding relay in the distribution board in
conjunction with other electric appliances, e.g. electric
storage heaters. The relay responds when the instanta-
neous water heater starts.
!
Material losses
Connect the phase that switches the load shedding
relay to the indicated terminal of the mains terminal
in the appliance (see chapter "Specification / Wiring
diagram").
10.2.4
Water installation on finished walls
Note
This type of connection changes the protection rat
-
ing of the appliance.
»
Change the type plate.
Cross out "IP 25" and
mark the box "IP 24".
Please use a ballpoint pen
to do this.
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» Fit water plugs with gaskets to seal the connection
on unfinished walls.
» Fit a suitable pressure tap.
