STIEBEL ELTRON HDB-E 18 Si - OPERATION

OPERATION
Appliance description
20 | HDB-E Si www.stiebel-eltron.com
2.3 Test symbols
See type plate on the appliance.
Country-specific approvals and certifications: Germany
A general test certificate [Germany] as verification of suitability
regarding noise emissions has been issued for this appliance.
based on the State Building Regulations [Germany].
DIN 4109
PA-IX 6816/I
3. Appliance description
The appliance heats potable water that flows through it. When
a DHW valve is opened. the heater starts automatically as soon
as the start-up volume has been reached. The heating output
is determined and matched by the flow rate and the cold water
temperature.
Heating system
The heating system is suitable for hard and soft water areas; it
is not susceptible to scale build-up. The heating system ensures
quick 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. the heater shuts
down automatically for one minute. thereby protecting
the heating system.
Thermostatic valve
The appliance is suited to operation with a thermostatic valve.
4. Operation
The heating system of the appliance starts automatically and heats
the water as soon as you open the DHW valve at the tap.
Setting the DHW temperature
Should the outlet temperature fail to reach the required level with
the draw-off valve fully open. then more water flows through the
appliance than can be heated by the heating system.
 Reduce the flow rate with the draw-off valve.
Outlet capacities
Subject to season. different maximum mixed water or outlet ca-
pacities can result from varying cold water temperatures (see
chapter “Specification”).
Following an interruption of the water supply
See chapter “Restarting”
5. Cleaning. care and maintenance
 Never use abrasive or corrosive cleaning agents. A damp
cloth is sufficient for cleaning the appliance.
 Check the taps/valves regularly. You can remove limescale
deposits at the tap outlets using commercially available des-
caling agents.
6. Troubleshooting
Fault Cause Remedy
The appliance will not
start in spite of a fully
open DHW valve.
There is no power. Check the fuse/MCB in
your fuse box/distribu-
tion panel.
Starting volume is not
achieved. The jet control-
ler in the tap or shower
head is scaled up or con-
taminated.
Clean and/or descale the
jet controller or shower
head.
The water supply has
been interrupted.
Vent the appliance and
the cold water inlet line
(see chapter “Commis-
sioning/ Restarting”).
Cold water flows briefly
while hot water is being
drawn.
The air sensor detects air
in the water and briefly
switches the heater off.
The appliance restarts
automatically after
1minute.
If you cannot remedy the fault. notify your heating contractor. To
facilitate and speed up your enquiry. please provide the serial
number from the type plate (000000-0000-000000):
HDB-E .. Nr.: 000000-0000-000000
26�02�02�1366