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7.3.
Air draught regulator adjustment
After the boiler reaches desirable temperature (70 ÷ 90 °C), comparing with the
readings of thermal gauge (
16
) installed in the boiler, set regulator (
17
) at similar
temperature
Note. Regulator’s dial misalignment with readings of thermal pressure gauge is
possible.
Shorten the chain so, that the primary air supply valves (
2
) would be closed or the
gap would be not bigger than 2 mm. Set the desired temperature by turning regulator
knob to relevant position.
As well the boiler may be supplied with different regulator, which has different
temperature's range marking.
7.4.
Boiler firing
For adding more fuel into the boiler:
-
Open the ignition damper (
13
) (
see picture 1
);
-
Open hearth service door (
1
) and check fire grate (29) holes for clogging, preventing
air to enter the hearth (
4
). If needed, use poker to move the bottom layer of the fuel.
Close the door (
1
);
-
By turning air draught adjuster handle (
17
), close the primary air supply valves (
2
)
located in the door;
-
Open a little fuel loading door (
6
) and keep for 15...20 seconds (for how long to
keep the door a little opened, observe, when there is no more smoke in the
chamber);
-
Open the door fully and add more fuel in the hearth;
-
Tightly close fuel loading door (
6
) and ignition damper (
13
).
-
According to the selected temperature, with the means of air draught adjuster (
17
),
open the primary air supply valves (
2
).
Notice. We recommend to refuel only having completely burned previous fuel load.
Otherwise refuel only in urgent cases if there is no other option.
Secondary air
The combustion process control not having the measuring devices could be done
by monitoring the color of the smoke going out of the chimney. The combustion
quality to be checked at water temperature ≥ 80º C. If the combustion process is good,
smoke than is thin, grey. If the smoke is thick and dark, means that fuel is not fully
burn, secondary air supply is insufficient. In such case open more the secondary air
valves. Using the birch logs moisture contain 25 %, the smoke ecological pollution is
the lowest (the carbon monoxide (CO) emission) is obtained when the secondary air
valves are open by 11 mm. Using other type of fuel for the secondary air supply valve
adjustment we recommend call to specialist, which have the gas analyzer. It is
appropriate to do so having the big quantity of homogeneous high-quality fuel.
Firing efficiency
During combustion remains the ash, which covers the fire grates. Accordingly
drops the burning intensity and boiler output. Therefore the fuel need to be poked. The
Summary of Contents for K-2-70
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