STIEBEL ELTRON 074301, Operation And Installation Manual, Page: 19 / 112

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www.stiebel-eltron.com DHF C | 19
OPERATION | INSTALLATION
Cleaning, care and maintenance
Recommended setting for operation with a thermostatic valve
f Set the output selector to full output.
Following an interruption of the water supply
!
Material losses
To ensure that the tubular heater heating system is not
damaged following an interruption to the water supply,
the appliance must be recommissioned by taking the fol-
lowing steps.
f
Disconnect the appliance from the power supply by
removing the fuses/tripping the MCBs.
f
Open the tap for one minute until the appliance and
its upstream cold water supply line are free of air.
f
Switch on the power supply again.
5. Cleaning, care and maintenance
f Never use abrasive or corrosive cleaning agents. A damp
cloth is sufficient for cleaning the unit.
f 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 / distribu-
tion board.
The flow rate is too low
for the appliance to start
heating at the selected
output. The aerator in
the tap is scaled up or
dirty.
Clean and/or descale the
aerator.
If you cannot remedy the fault, contact your qualified contractor.
To facilitate and speed up your enquiry, please provide the serial
number from the type plate (000000-0000-00000).
Nr.: 000000-0000-00000
D
00000
42
70
4
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 ther-
mostatic valve.
7.2 Instructions, standards and regulations
Note
Observe all applicable national and regional regulations
and instructions.
Protection rating IP 24 (splashproof) can only be guaranteed with
a correctly fitted cable grommet.
8. Appliance description
8.1 Standard delivery
The following are delivered with the appliance:
- Wall mounting bracket
- Installation template (in the centre section of these
instructions)
- 2 twin nipples
- 3-way ball shut-off valve for cold water
- Tee for domestic hot water
- Flat gaskets
- Strainer
- Plastic profile washer
- 2 cover guides (for surface-mounted installation)
8.2 Accessories
Taps
- MEKD mono lever kitchen pressure tap
- MEBD mono lever bath pressure tap
- WSH 10 / WSH 20 washbasin sensor tap
Water plugs G ½ A
If you use surface-mounted pressure taps other than those recom-
mended in the accessories, please use the water plugs.