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7. Operation and maintenance
7.1.
In the course of EWH operation user can adjust water heating temperature using temperature
adjustment knob located on the control panel (fig. 1). To set the desired temperature, press in on the
adjustment knob thus putting it out of EWH housing, set the desired temperature and drown the knob
with one more pressing in order to avoid accidental changes in temperature.
When water temperature exceeds the value of the +95° C temperature switch is actuated shutting
down the EWH.
7.2.
Maintenance
When performing maintenance scale presence on TÈH is checked. At the same time residue that
may accumulate in the bottom of the EWH is removed. If there is scale on TEH, then it can be
removed by using scale removing means or mechanically.
It is recommended to perform the first maintenance in a year from the date of EWH connection by
experts of specialized organization and on the basis of intensity of scale and residue to determine
dates for follow-up maintenances. This action will maximally extend the lifespan of EWH.
ATTENTION! Accumulation of scale on TEH may cause damage.
NOTE: damage to TEH due to scale formation is not subject to warranty obligations. Regular
maintenance is not included in the basic warranty obligations of the manufacturer and the
seller.
To perform maintenance follow the steps:
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.
Put the rubber hose on the cold water supply inlet pipe and direct the second end to the
drain.
Open the hot water faucet on the mixer and drain water from the EWH through cold water
supply inlet pipe.
Remove the protective cover, disconnect wires, unscrew and remove from the casing the
removable flange.
Clean the TEH if necessary from scale and remove residue..
Assemble, fill EWH with water and power on.
When conducting EWH maintenance by forces of specialized organization relevant note
shall be made in the warranty and service book.
Fig. 1 Control board
On/off button.
Save heating mode
Temperature
adjustment knob
Full heat mode button
5


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