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ÜKY/Duopel Boilers User Manual
INFORMATION ABOUT COMBUSTION
As a general rule, the air supplied to the fuel should be at a certain rate to
ensure correct combustion. So the fan speed should be adjusted well.
The air required for a certain amount of fuel should not be too much. If
the amount of air varying depending on the type of fuel is less than
necessary, carbon monoxide is formed, the energy produced decreases,
processing begins, the combustion efficiency decreases, when the
amount of air is more than necessary, while the carbon monoxide
decreases, the air that does not enter the combustion is removed from
the chimney by being heated in the furnace, combustion deteriorates,
combustion efficiency. It decreases.
If the flue gas temperature is above the accepted values, much energy
will be thrown from the flue to the atmosphere. The material,
construction and connection of the chimneys are important in terms of high combustion efficiency,
low heating costs and environmental protection.
For the combustion to be good, the chimney must also be good. High temperature resistant firebrick
and stainless steel chimneys are recommended as a material. Horizontal smoke channels should be
connected to the chimney with a rising slope of at least 5% and its length should never exceed 1/4 of
the chimney height. The height of the chimney should be determined well and the chimney rising
from the building should rise at least 80 cm from the ridge. Unless compulsory, the chimney sections
should be circular.
Perforated bricks should never be used on chimney walls. Ideally, it is knitted with firebrick. ÜNMAK
boilers should be connected to an independent chimney that can provide the minimum desired
minimum draft. Minimum draft is generally min. It should be measured with a manometer in 20 Pa.
The part of the waste gas line between the boiler and the chimney should be insulated with glass
wool. The flue gas pipe and chimney should be made of steel sheet or material resistant to around
400 °C. All connections on the flue gas pipe must be sealed for better combustion and efficiency. The
waste gas pipe should be connected to the chimney in the shortest way, within the dimensions given
in the diagram below. Horizontal connections and equipment such as elbows that reduce draft
should be avoided.
A vertical singular steel pipe
should not be used as a chimney,
the chimney must have an inner
and an outer surface. The outer
surface may be steel or brick
braided. For the inner surface of
the chimney, corrosion-resistant
stainless steel can be preferred.
To prevent condensation, thermal
insulation should be made in the
gap between the inner and outer
surface of the chimney.
At the lowest level of the
chimney, there should be a
cleaning cover made of all kinds of
sealed steel.
