Wood Energy Solutions E-COMPACT 40, Руководство по установке и эксплуатации

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3.5. HOW THE E-COMPACT OVERCOMES ISSUES CAUSED BY DRAUGHT
DEFECTS IN THE FLUE
Of all the weather and geographical conditions which affect the
operation of a flue pipe (rain, fog, snow, exposure to sunlight, direction
of facing), the
wind is unquestionably the most decisive. In fact, along
with thermal depression caused by the difference in temperature
inside and outside of the chimney, there is another type of depression
or over-pressure: dynamic pressure caused by the wind. An updraft
always increases depression and hence draught. A crosswind increases
depression provided the cowl has been installed properly. A downdraft
always decreases depression, at times inverting it.
Besides the direction and force of the wind, the position of the flue and
the cowl with respect to the roof of the building and the surrounding
landscape is important.
The E-Compact Air Draft Regulation System is equipped to deal with
the conditions referenced above by regulating the air flow through the
combustion chamber. An air flow sensor mounted on the air intake
duct measures the volume of air drawn pulled through the burner pot
by the exhaust fan. If downdraught conditions are present and air flow
increases, the exhaust fan increases speed to maintain the required air
flow. The opposite reaction occurs in up-draft conditions.
IMPORTANT!
In areas of extreme weather, especially wind, additional
measures may need to be provided for, in consultation
with WES. Flue draft stabilisers will be required where
natural draft of >100pa is present or anti-downdraught
cowls will be required where downdraft of >10Pa exists.
ECOMPACT 40
Page 11
Pre-Installation Considerations
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Considerations for naturally ventilated chimneys