Maintenance; Dealing With Malfunctions - Nibe ES Series Installation And Maintenance Instructions Manual

GB

Maintenance

Maintenance
Safety valve
The safety valve should be checked about four times a
year. When the safety valve knob is turned anti­clock­
wise, water should stream through the overflow pipe. If
this does not happen then the safety valve is defective
and must be replaced.
The safety valve sometimes releases a little water after
hot water has been tapped. This discharge is caused by
the expansion of the cold water taken into the water
heater, resulting in a pressure increase, whereby the
safety valve opens.
Emptying
1. Turn off the power to the water heater.
2. Shut off the cold water inlet with valve (A).
3. Loosen the cover of the drain valve (8) and mount
the supplied hose connector and hose.
4. Turn the drain valve (8).
5. During draining, air must be let into the water
heater by loosening the hot water connection (42)
or opening a hot water tap. In order to ensure the
complete emptying of the water heater, the hose
connection must be completely tight and the outlet
must be below the lowest point of the water heater.
When mounted in locations exposed to the risk of frost,
the water heater must be emptied whenever not in op­
eration. Freezing can result in the water heater bursting.
10

Dealing with malfunctions

Check the installation's fuses and the setting of the
thermostat and mixing valve.
Wait a few hours without tapping any hot water and
then check whether the temperature level has risen. If
there is still no hot water, contact the installation
engineer.
Resetting the temperature limiter
If the temperature limiter (5) tripped, the water heater
must cool for at least one hour before it can be reset.
1. Remove the plastic cover (2).
2. Press the button on the temperature limiter lightly,
max 15 N (approx. 1.5 kg).
NOTE!
6
Max 15 N (approx. 1.5 kg)
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Reconnecting sensors
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Reconnection of sensors for thermostat and tempera­
ture limiter.
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Service
For service, contact the installer. The serial number
(95), (14 digits) and installation date should always be
stated. Only electrical equipment supplied by NIBE AB in
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Markaryd may be used.
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ES
Electrical installation and service must be
carried out under the supervision of a
qualified electrician.
5
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2­phase installation
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2­phase installation
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Max 40 N (approx. 4 kg)
LEK
STB TR
3­phase installation
LEK
Limit Therm
STB TR
3­phase installation
LEK
LEK