Cleaning the fan
1. Check the cleanliness of the fan once a year. Clogging by dust and
other particles impairs the heat pump's performance.
8.2.4
Impressed current anode
No maintenance operations are required on an impressed current anode.
Note
The control panel for the appliance must be powered on to ensure
that the impressed current anode can operate.
8.2.5
Checking the safety valve or safety unit
Operate the safety valve or safety unit at least once a month to check that
it is running correctly. This check helps to protect against any pressure
surges that may damage the water heater.
Caution
Failure to comply with this maintenance rule may cause damage
to the water heater tank and invalidate its warranty.
8.2.6
Descaling the thermodynamic water heater
Note
Fit a new leak tight gasket to the inspection hatch.
In hard water regions, you are recommended to ask the installer to des
cale the water heater exchanger once a year in order to maintain its per
formance levels.
1. Shut off the domestic cold water inlet.
2. Drain the water heater.
3. Turn on a hot water tap.
4. Open the valve on the safety unit.
5. Remove the insulation from the inspection hatch.
6. Take out the domestic hot water sensor.
7. Remove the inspection hatch (13-mm spanner).
8. Until December 2015: Remove the two bulbs from the safety ther
mostat.
From January 2016: Take out the safety thermostat bulb.
9. Remove the limescale deposited in the tank in the form of sludge or
strips. Leave the limescale on the walls of the tank: it provides effec
tive protection against corrosion and enhances the water heater's in
sulation.
10. Then replace all the parts in reverse order.
Note
Each time it is opened, the lip gasket must be replaced to guaran
tee tightness. Place the positioning lug on the gasket towards the
outside of the water heater.
11. After each intervention, ensure that the installation is watertight.
Note
The screws must be tightened to 6 Nm + 1/-0. Use a torque
wrench.
8.2.7
Cleaning the condensate discharge pipe
A dust obstruction may cause poor condensates flow or even a risk of ex
cessive accumulation of water.
1. Check the cleanliness of the condensate discharge pipe.
Fig.50
M002839-B
8 Maintenance
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