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OPERATION
Appliance description
Damage to the appliance and environment
!
Protect the appliance and its tap against frost.
2.3
CE designation
The CE designation shows that the appliance meets all essential
requirements according to the:
- Low Voltage Directive
- Electromagnetic Compatibility Directive
The maximum permissible mains impedance is indicated in
chapter "Specification".
2.4
Test symbols
See type plate on the appliance
Information for Australia/New Zealand:
Installation complies with standard AS/NZS 3500.4.
3.
Appliance description
The electronically controlled instantaneous water heater with
automatic output matching maintains a consistent outlet temper-
ature. This occurs irrespective of the inlet temperature, up to the
maximum output. The DHW outlet temperature can be variably
adjusted.
DHW temperature
The DHW outlet temperature can be variably adjusted.
Temperature limit / Anti-scalding protection
The maximum outlet temperature for the appliance can be limited
to 43 °C. For this, contact your local heating contractor.
Heating system
The heating system is suitable for hard and soft water areas; it
has low susceptibility to scale build-up. This system ensures rapid
and efficient DHW availability.
Note
The appliance is equipped with an air detector that large-
ly prevents damage to the heating system. If, during op-
eration, air is drawn into the appliance, heating output
is shut down automatically for one minute, thereby pro-
tecting the heating system.
4
| DHB-E AU
4.
Settings
DHB-E 13 AU
DHB-E 18 AU | DHB-E 27 AU
Should the outlet temperature fail to reach the required level with
the draw-off valve fully open and the temperature selector set to
maximum, then more water is flowing through the appliance than
can be heated by the heating element.
f Reduce the flow rate at the draw-off valve.
f
Recommended setting for operation with a thermostatic valve
and water preheated by solar energy
f Set the temperature at the appliance to the max.
f
temperature.
4.1
Following an interruption of the water supply
Material losses
!
Following an interruption of the water supply the appli-
ance must be recommissioned by carrying out the follow-
ing steps, in order to prevent the destruction of the bare
wire heating system.
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
5.
Cleaning, care and maintenance
f Never use abrasive or corrosive cleaning agents. A damp
f
cloth is sufficient for cleaning the appliance.
f Check the taps regularly. Limescale deposits at the spouts
f
can be removed using commercially available descaling
agents.
www.stiebel-eltron.com
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Troubleshooting
