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the approximate temperature and quantity of hot water within the water tank.
WARNING! Do never switch the appliance if there is a chance that the
water in the water tank is frozen! This shall damage both heater and the
tank.
WARNING! This appliance may be used by children of age over eight
years old and persons with reduced physical, sensory or mental
capabilities, or lack of experience and knowledge, where they are under
supervision or instructed about the safe use of the appliance and
understand the dangers. Children must not be allowed to play with the
unit! It is absolutely forbidden that children undertake cleaning or
servicing of this appliance!
Within the combined valve is built a special controller which during water
heater normal operation allows the expanded during heating water not to
leak through the valve side hole, but to pass into cold water plumbing. The
quantity of this water is negligible and usually is with low temperature.
During normal operation of the water heater, as well as in present of
additional return valve, it is possible that through the valve side opening leak
some water drops. This should not be perceived as defect and the side hole
of combined valve should not be blocked because it shall cause destruction
of the tank. The built-in controller in the valve prevents, in case of cutting
water supply, the water in the water tank to return to cold water pipeline.
Using the built-in heater exchangers (for appliances equipped with) to heat
the water in the tank must take place in accordance with the instruction
provided for by the persons who carried out the design and installation of the
system for heating water from alternative electric sources. Compliance with
the instruction in such guides is mandatory.
When the appliance is used in areas with soft water rich in limestone it is
possible to hear some noises during water heating. The noise is due to the
limestone stitching on the heater and contained within the tank. The quantity
of limestone contained depends of the type of water and its heating
temperature. When the latter is higher than 60 °С the quantity of separate
limestone increases. Accumulated limestone impedes the heater efficiency
and may even cause its failure, while increasing the time for water heating.
When using the appliance it is possible to hear some weak noise due to the
water flow through the pipelines and the appliance, as well as to the natural
process of expanding and heating.
When the heater is regularly used to heat water to a lower temperature, it is
recommended to turn the thermostat knob at least once monthly to its
maximum position, then to heat the water to maximum degrees and keep it
such at least for 24 hours. The purpose it to prevent bacteria growth.
ADDITIONAL CORROSION PROTECTION
Enameled water heater tanks. In each water heater with enameled tank is
installed additional corrosion protection. It consists of an anode protector
(anode) of special alloy operating only when the water tank is full. The anode
is a consumable (i.e. a device with normal wear during the appliance
operation) and its average operational life is up to 3 years. This period
depends much of the type of operating the appliance and the characteristics
of the heated water. After the period of operational life, a manufacturer
authorized specialist or dealer service company must check the conditions
of the anode. Where necessary it should be replaced with new one.
Compliance with the inspection deadline and timely replacement of the
anode is important for the effective protection of the tank from corrosion.
Both the assessment and replacement of the anode are not subject of
manufacturer and seller warranty liabilities.
Water heater with enamel tank and anode tester. The availability of the
anode tester as control device is essential for the heater operation. Some
water heater modifications with traditional thermostat are equipped with
electromechanical anode tester (Fig. 10). It consists of a arrow-indicating
system with a scale and switch (button). The scale has two sections – red
and green. In tank normal operating condition the tester pointer is in the red
section – the tester is not switched on and the anode is working properly.
Checking the anode efficiency is carried out when the water is fully heated
(the thermostat is in position OFF, i.e. the key is not lit) by pressing for few
seconds the button on the tester. The arrow shall depart in the direction of
the scale green sector. The magnitude of the variation is strongly affected by
the parameters of the water and its temperature, as the boundary between
the two sectors correspond to the water average values. The anode
efficiency criterion is its arrow deflection. When at the time of pressing the
tester button, the arrow does not divert or is hold at the beginning of the red
section, you should contact the specialists at your nearest manufacturer or
vendor authorized service company. Their specialist shall review the tank
corrosion protection and repair, if necessary. In some water heaters
modifications the electronic control board indicates the anode efficiency and
degree of wear with periodic regular display blinking. With advanced wear
the size of lighted part decreases. More specifically the process is described
in the additional instruction manual concerning the electronic control board
functions. Once the lighted part of the display switches off completely you
may contact the closest service company to review and eventually replace
the anode.
Water tanks of high quality chrome-nickel alloy steel. Corrosion
protection and guaranteed long life are secured by correct choice of steel,
adequate design and engineering construction during tank manufacture
process.
SERVICE, PREVENTION, MAINTENANCE
In order to secure reliable operation of the water tank in areas with highly
calcareous water it is recommended to clean the limestone accumulated
within. This operation should take place at least once every two years, while
in areas with higher limestone content even more frequently. The
depositions on the enamel coating should not be removed otherwise than
wiped with dry cotton cloth and without using hard tools. Regular limestone
removal and cleaning is particularly important for appliance reliable
operation. It is recommended that during this maintenance operation you
carry out a review of the enameled tank anode condition. These services are
not subject to warranty coverage and must be performed only by qualified
person.
WARNING! In order to secure water heater safe and trouble-free
operation, the combined valve should be checked regularly for reduced
permeability. This is carried out by lifting the lever and waiting 30 to 60
seconds from the valve side edge to run thick and plenty water. This
operation obligatory carried out after connecting the heater to the
plumbing and when filling of the tank with water in the process of using
the heater not less than once every two weeks, as well as eventually
after stop and start of water supply. If at full tank by opening the valve
does not leak or water flow is weak, there is a failure and probably the
valve is clogged by impurities in the sewage. Using water heater
combined with a defective valve is strictly prohibited. Switch off
immediately the appliance from the power supply and contact the
nearest authorized by manufacturer service company. Otherwise, it will
cause damage to the water tank, and could cause tangible and
intangible damages in the room where the water heater is located.
The water heater outer shell and plastic parts can be cleaned using only a
slightly damp soft cotton cloth and never with invasive and/or abrasive
substances and preparations. Before cleaning the appliance, it MUST be
disconnected from the power supply with the additional disconnection
device. IT IS FORBIDDEN to clean the appliance with steam generator.
Particular attention should be paid to prevent wetting of the appliance light
switch on its control panel. The water heater may be switched on in
operation only after complete removal of moisture.
The rules for checking the anode protection and anode replacement (please
refer to previous section), as well as removal of the accumulated limestone,
must be strictly observed both during and after the appliance warranty
period.
During the appliance usage and maintenance do not damage the metal
plate with its technical data and serial number. Should you take it off, keep it
with the warranty form because it is the document serving to identify the
water heater.
FAILURES
When the heater does not heat the water, check if the external disconnecting
device is not switched off, if the lighting key is switched off and if the
thermostat knob is not turned to the lowest position.
If the power supply is in order, the lighting key is switched on and the
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