Cleaning Of The Ventilation Filter; Magnesium Anodes; Emptying The Boiler; Installation And User Manual - Daikin EKHH2E200AAV3 Manuel D'installation Et D'utilisation

9.4 Cleaning of the ventilation
filter
In the upper part of the equipment there is a ventilation
filter. This must be periodically cleaned in order to
maintain the perfect efficiency of the system.
After every 1000 hours of operation, the display of the
equipment shows the "FiL" alarm that indicates the
need to check the cleanliness of the filter.
To remove the filter, it is necessary to grab it with the
fingers from the dedicated side opening and pull it
outside (Fig. 20).
The filter can be cleaned with rinsing, water gush or
slamming. Since the filter is made of stainless steel,
it does not need to be periodically substituted.
Side slot
Ventilation
filter
Fig. 20 – Details of the ventilation filter
N.B.
The filter obstruction reduces the heat pump
system performance causing insufficient, or,
even total lack of ventilation.
Page 36
9.5

Magnesium anodes

The magnesium anode (Mg), also called "sacrificial"
anode, avoids any parasitic currents that are generated
inside the boiler that can trigger corrosion processes on
the device surface.
In fact, magnesium is a metal with a lower
electrochemical potential when compared to the
material that lines the inside of the boiler, therefore it
first attracts the negative charges that form with the
heating of the water and that cause it to corrode.
Therefore, the anode "sacrifices" itself by corroding
instead of the tank. The boiler has two anodes, one that
has been mounted in the lower part and another in the
upper part of the tank (the area that is most subject to
corrosion).
The integrity of the magnesium anodes must be
checked at least every two years (even better if
checked on an annual basis). The operation must be
carried out by qualified personnel.
Before performing the inspection, it is necessary to:
Close the cold water input supply;
Empty the water from the boiler
(see paragraph 9.6);
Unscrew the upper anode and check its state of
corrosion, if more than 30% of the anode surface
is corroded then it is necessary to replace it;
Carry out the same operation for the lower anode.
The anodes have appropriate sealing gaskets,
in order to avoid causing water leaks, it is
recommended to use anaerobic sealant for
threads compatible for use on sanitary and heating
systems. The gaskets must be substituted both in
case of inspection as well as the replacement of
anodes with new gaskets.
9.6

Emptying the boiler

It is advisable to drain the water from the boiler if the
boiler is not in use for a certain period of time,
especially in low temperatures.
It is recommended to drain the water from the boiler if
the boiler remains stationary for a certain period of time,
especially at low temperatures.
Before draining the water, the appliance must be
switched off and disconnected from the mains. Proceed
as follows to drain the water from the boiler: switch off
the appliance and disconnect the power supply cable
from the mains, close the water shut-off valve (see 2 fig.
8 paragraph 6.4), operate the drain tap (see 5 fig. 8
paragraph 6.4). To facilitate the flow of water to the
drain it is recommended (if it is not already present), to
install a hose connector on the drain tap.
N.B.
It is important to empty the system in case of
low temperatures in order to avoid the water
freezing.

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