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appliance shutdown
f Make the user aware of potential dangers, especially the risk
f
of scalding.
f Hand over these instructions.
f
11.2 Recommissioning
Material losses
!
To ensure that the bare wire heating system is not dam-
aged following an interruption to the water supply, the
appliance must be restarted by taking the following steps.
f Disconnect the appliance from the power supply by
f
removing the fuses/tripping the MCBs.
f Open the tap for one minute until the appliance and
f
its upstream cold water inlet line are free of air.
f Switch the mains power back on again.
f
12. Appliance shutdown
f Isolate all poles of the appliance from the power supply.
f
f Drain the appliance (see chapter "Installation / Maintenance /
f
Draining the appliance").
13. Alternative installation methods
13.1 Electrical connection from above on unfinished
walls
f Cut open the cable grommet for the power cable.
f
f Push down the locking hook for securing the mains terminal.
f
Pull out the mains terminal.
f Reposition the mains terminal in the appliance from the bot-
f
tom to the top. Secure the mains terminal by sliding it under
the locking hook.
f Route the control wires under the wire guide.
f
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13.2 Electrical connection on finished walls
Note
This type of connection changes the IP rating of the ap-
pliance.
f Change the type plate. Cross out "IP 25" and mark
f
the box "IP 24". Use a ballpoint pen to do this.
Material losses
!
If you break open the wrong knock-out in the back panel
by mistake, you must use a new back panel.
f Cleanly cut or break out the required cable entry in the back
f
panel (for positions, see chapter "Installation / Specification /
Dimensions and connections"). Deburr sharp edges with a
file if necessary.
f Route the power cable through the cable grommet and con-
f
nect the power cable to the mains terminal.
13.3 Large conductor cross-section for electrical
connection from below
If you use cables with a large cross-section, you can fit the cable
grommet after the appliance has been installed.
1.
3.
f Before installing the appliance, use a screwdriver to push out
f
the cable grommet.
f Slide the cable grommet over the power cable. Use the
f
installation aid supplied in the standard delivery. If the
cross-section is > 6 mm², enlarge the hole in the cable
grommet.
f Push the cable grommet into the back panel. Click the cable
f
grommet into place.
13.4 Connecting a load shedding relay
Install a load shedding relay in the distribution board in conjunc-
tion with other electric appliances, e.g. electric storage heaters.
The relay responds when the instantaneous water heater starts.
2.
4.
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