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21
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2.5
HEATER CLEANING AND
ANODE ROD EXCHANGE
Repetitive water heating causes limestone sediment on both the enamelled tank walls and chiefly the
flange lid.
Lime scale settling depends on hardness of heated water, its temperature and on the volume of
hot water used.
We recommend checking and cleaning the tank from scale and eventual replacement of
the anode rod after two years of operation.
The anode life
is theoretically calculated for two years of operation; however, it changes with water
hardness and chemical composition in the place of use.
Based on such an inspection, the next term of
anode rod exchange may be determined.
Have a company in charge of service affairs deal with the cleaning
and exchanging of the anode.
When draining water from the heater, the combination faucet valve for hot
water must be open, preventing the occurrence of under
-
pressure in the heater tank which would stop
water from draining.
To prevent the occurrence of bacteria (e.g. Legionella pneumophila) within stack heating it
is recommended, if absolutely necessary, to increase the temperature of hot service water
(HSW) periodically for a transitional period of time to at least 70
℃
. It is also possible to
make use of another way of disinfecting HSW.
2.6
SPARE PARTS
-
flange lid
-
flange lid seal
-
set of M12 (or M10) bolts
-
thermostat and thermal fuse
-
magnesium anode
-
insulation flange lid
-
control lights with wires
-
control button for the thermostat
-
capillary thermometer
-
heating element
When ordering spare parts, give part name, type, and type number from the heater label.
