INSTALLATION
Cleaning, care and maintenance
ENGLISH
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Following an interruption to the water supply
!
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 taking the following steps.
Disconnect the appliance from the power supply by
removing the fuses/tripping the MCBs.
Open the tap for one minute until the appliance and
its upstream cold water inlet line are free of air.
Switch the power back ON.
5. Cleaning, care and maintenance
Never use abrasive or corrosive cleaning agents. A damp
cloth is sufficient for cleaning the appliance.
Check the taps regularly. Limescale deposits at the tap out-
lets can be removed using commercially available descaling
agents.
6. Troubleshooting
Problem Cause Remedy
The appliance will not start despite the
DHW valve being fully open.
There is no power. Check the fuses/MCBs in your fuse box/distribution board.
The aerator in the tap or the shower head is
scaled up or soiled.
Clean and/or descale the aerator or shower head.
The water supply has been interrupted. Vent the appliance and the cold water inlet line.
When hot water is being drawn off, cold
water flows for a short period.
The air detector detects air in the water. It
switches off the heating output briefly.
The appliance restarts automatically after 1minute.
The required temperature cannot be set. Internal anti-scalding protection is activated. The internal anti-scalding protection can only be adjusted by the qualified
contractor.
Note
After a power failure
Programming unit displays and selected settings are re-
tained following a power failure.
If you cannot remedy the fault, contact your qualified contractor.
To facilitate and speed up your request, provide the number from
the type plate (000000-0000-000000).
Nr. 000000-0000-00000
D0000053312
INSTALLATION
7. Safety
Only a qualified contractor should carry out installation, commis-
sioning, maintenance and repair of the appliance.
7.1 General safety instructions
We guarantee trouble-free function and operational reliability only
if original accessories and spare parts intended for the appliance
are used.
!
Material losses
Observe the maximum inlet temperature. Higher tem-
peratures may damage the appliance. You can limit
the maximum inlet temperature by installing a central
thermostatic valve (see chapter "Appliance description/
Accessories").
WARNING Electrocution
This appliance contains capacitors which are discharged
when disconnected from the power supply. The capacitor
discharge voltage may briefly reach >60VDC.
7.2 Shower operation
CAUTION Burns
When supplying a shower, set the internal an-
ti-scalding protection to 55°C or less; see chapter
"Commissioning/ Preparations".
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