Settings; Setting The Temperature Limit; Shutdown; Troubleshooting - Stiebel Eltron SNU 5 SL 1 kW Utilisation Et Installation

INSTALLATION

Settings

11. Settings

11.1 Setting the temperature limit

1
2
1 Temperature selector
2 Limiting ring
Placing the limiting ring behind the temperature selector allows
you to limit the setting range of the temperature selector to a
specific maximum temperature.
f Turn the temperature selector to zero (fully anti-clockwise to f
"°C").
f Pull off the temperature selector and the limiting ring. f
f Push the limiting ring with the required maximum setting f
onto the controller shaft.
f Install the temperature selector set to zero (°C). f

12. Shutdown

f Isolate the appliance from the power supply by removing the f
plug or by tripping the MCB in the fuse box.
f Drain the appliance (see chapter "Installation / Maintenance / f

Draining the appliance").

13. Troubleshooting

Problem Cause
The appliance does The high limit safety
not supply hot water. cut-out has responded.
The strainer is contam-
inated.
Loud boiling noises The appliance is scaled
inside the appliance. up.
The tap drips for a The residual water
while after it has is not held in the tap
been closed. outlet.
The tap drips when An unsuitable tap is
the appliance is being used, e.g. a WAT
heating up. anti-drip tap.
The anti-drip function
is faulty.
20 | SNU 5
Remedy
Remedy the cause of the fault.
If necessary, replace the tem-
perature controller. Allow the
appliance to cool down. If you
have isolated the appliance from
the power supply, the high limit
safety cut-out will be reset au-
tomatically.
Clean / replace the strainer in
the "cold water inlet" connec-
tion.
Descale the appliance.
Replace the aerator in the tap
outlet or the tap.
Replace the tap (see chapter
"Installation / Appliance de-
scription / Accessories").
Replace the appliance.

14. Service

WARNING Electrocution
Before any work on the appliance, disconnect all poles
of the appliance from the power supply.
f Dismantle the appliance for maintenance work. f
14.1 Draining the appliance
WARNING Burns
Hot water may escape during the draining process.
f Drain the appliance via its connectors. f

14.2 Opening the appliance

f Pull off the temperature selector and the limiting ring. f
f Remove the screws from underneath the temperature f
selector.
f Open the appliance cover by lowering the bolt screws in- f
wards and pivot the cover upwards, then remove it.

14.3 Descaling the appliance

Material losses
!
Never treat the cylinder surface with descaling agents.
f Remove the flanged immersion heater. f
f Carefully tap the heating element to remove large limescale f
deposits.
f Immerse the heating element up to the flange plate in desca- f
ling agent.
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