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a) Gas consumption tap knob in the position
"Minimal consumption"
At water consumption reduction to 2...2,5 l/min or less the appliance automatically switches off.
Note 1. Water overheating in the heat exchanger causes the appearance of noise during the appliance's operation and
causes fast scale deposit appearance in the heat exchanger's pipes and narrowing of their flow sections, what in some
time will lead to the appliance's operation efficiency reduction and weakening of hot water jet. So in order to reduce the
appliance's output water temperature it is not recommended to use a mixing vessel, adding cold water but to use the
above listed methods.
Note 2. It is not recommended to set high hot water temperature by the appliance's outlet if not necessary, as water
overheating in the heat exchanger causes the appearance of noise during the appliance's operation and causes fast
scale deposit appearance in the heat exchanger's pipes and narrowing of their flow sections, what in some time will
lead to the appliance's operation efficiency reduction and weakening of hot water jet. So in order to reduce the
appliance's output water temperature it is not recommended to use a mixing vessel, adding cold water but to set the
temperature needed in the water pumping point by means of gas consumption knob.
3.3. Switching the appliance off
3.3.1
In order to switch the appliance off it is enough to stop water flow through it, closing all hot water taps. After
closing all hot water taps it is necessary to make sure that the main burner's flame has completely gone out.
ATTENTION! If after closing all hot water taps the main burner is still operating, it is necessary to
immediately block gas supply by means of the gas stop valve of the appliance's inlet, and call a specialized
service organization for the appliance's repair.
3.3.2 When you finish using the appliance (at night time, not being at home etc.) it is necessary to switch it off,
following the following sequence:
a) Close the hot water taps;
b) Close the stop gas valve by the appliance's inlet;
c) Close the cold water stop valve by the appliance's inlet
In case of hard water, in order to reduce scale deposit appearance it is recommended to reduce water
consumption by the hot water tap before closing it until the main burner switches off (less than 2 l/min) and let
the water run through the appliance until it is warm. Then close the hot water tap.
3.4. Replacing the appliance's power elements
The indicator of the power element's discharge is absence or substantial weakening of the spark discharges
3.4.2.
between the plug and ignition burner after start of water flow through the appliance (at consumption more than
2,5 l/min)
3.4.3.
The new power element of typical size D is installed into the battery section 13 (see scheme. 10, scheme11,
scheme. 12).
When installing the power element it is necessary to observe polarity in accordance with the scheme on the inner
side of the section's cover.
It is recommended to install alkaline power element type LR20 with high energy output ratio that ensures more
durable operation of the appliance. Installation of low-quality power elements or elements with low energy output ratio
may lead to their quick discharge and the appliance's loss of function..
3.5. Protection from freezing
If after switching the appliance off water freezing in it is possible, it is necessary to drain the water out of it as
follows:
a) Close the gas stop valve and cold water tap by the appliance's inlet;
b) Open the hot water tap and turn the knob of the tap 15 (scheme 10, scheme 11, scheme 12) to the rightmost
position;
c) Unscrew the gag 14 and let the water leak into a tank;
d) Screw the gag 14 back up to the stop and close the hot water tap.
3.6. Actions in emergency situations
In case of emergency situation during the appliance's operation it is necessary to:
Close the gas stop valve by the appliance's inlet;
a)
b) Close the cold water stop valve by the appliance's inlet (in case of water leakage);
c) Call a specialized service organization for the appliance's repair..
ATTENTION! In case of failures in the combustion products removal system gas supply to the burner
stops. In case of the appliance's switching off by a signal from the thermo relay (draught sensor 16, Scheme
10, Scheme 11, Scheme 12) it is necessary to close the hot water tap and ventilate the premise.
Restarting of the appliance will be possible after the thermo relay cools down (in 1-2 minutes). In case of
the appliance's repeated switching off by the draught sensor it is necessary to address to the specialized
service organization for gas removal system failure elimination. Disconnecting the draught sensor or its
incompetent handling is unacceptable and may lead to sweetdamp poisoning.
In order to ensure long-term and failure-free-free operation of the appliance and keep its operating characteristics it
is necessary to regularly effectuate its examination, treatment and technical service.
Scheme 3. Positions of the gas consumption tap knob
4.
APPLIANCE TREATMENT
b) Gas consumption tap knob in the position
"Maximal consumption"
12
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