7
Frost protection mode “NO FROST”. When EWH is plugged, but switched off using
“On/Off” button, and water temperature is less than 5 ℃ the frost protection mode is
automatically enabled. When water temperature reaches 10 ℃ the frost protection
mode is automatically disabled. When frost protection mode is enabled, power indicator
is on.
If you do not use the EWH in the winter time and there is a possibility of freezing
of the main waterways and the water heater itself, it is recommended to turn off the power
and drain the water from the EWH in order to avoid damage to the inner tank.
TECHNICAL MAINTENANCE
Maintenance and timely replacement of magnesium anode are obligatory condi-
tions for long-term operation of EWH. Failure to comply with these requirements is
grounds for release from the warranty service. Maintenance and replacement of magne-
sium anode are not part of the warranty of the manufacturer.
When performing maintenance condition of magnesium anode and scale on TÈH
are checked. At the same time residue that may accumulate in the bottom of the EWH
is removed.
Magnesium anode must be replaced at least once in 2 years. If water contains high
levels of chemical contaminants, the magnesium anode must be replaced more often.
Scaling at TEH can result in its malfunction, that is not a warranty case, and its replace-
ment is not included in the warranty of the manufacturer and the seller. If there is scale
on TEH, then it can be removed by using scale removing means or mechanically. When
removing residuals from EWH do not apply excessive force and do not use abrasive
cleaners not to damage the protective coating of the inner tank.
Importance of the first maintenance is that by intensity of scale and residues, mag-
nesium anode consumption terms for next maintenance services can be decided and,
consequently, service life can be extended. In case of non-observance of the above re-
quirements EWH service life reduces, increases the probability of EWH breakdown and
validity of warranty expires.
Note: Damages to TEH due to scale formation are not subject to warranty. Regular
maintenance is not included in the warranty of the manufacturer and the seller.
The following shall be carried out for maintenance:
Turn off EWH power;
Cool hot water or discharge it through the mixer;
Cut off supply of cold water into EWH;
Unscrew the relief valve or open drain valve;
To put on the cold water supply inlet or discharge valve a rubber hose, send-
ing the other end down the drain;
Open hot water tap on mixer and drain water from the EWH through the hose;
Remove the protective cover, disconnect wires, unscrew and remove from the
casing the removable flange;
Clean if necessary THEs from scale and remove residue from the tank;
