Ventis HE200, Инструкция по установке и эксплуатации, Страница: 67 / 96

HE200 - Installation and Operation Manual
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8.10.1 Air Supply in Conventional Houses
The safest and most reliable supply of combustion air for your wood fireplace is from the room in which it is
installed. Room air is already preheated so it will not chill the fire, and its availability is not affected by wind
pressures on the house. Contrary to commonly expressed concerns, almost all tightly ‐ sealed new houses
have enough natural leakage to provide the small amount of air needed by the fireplace. The only case in
which the wood fireplace may not have adequate access to combustion air is if the operation of a powerful
exhaust device (such as a kitchen range exhaust) causes the pressure in the house to become negative
relative to outdoors.
If you do install an air supply through the wall of the house, be aware that its pressure can be affected
during windy weather. If you notice changes in wood fireplace performance in windy weather, and in
particular if smoke puffs from the fireplace, you should disconnect the outdoor air duct from the fireplace
and remove the duct. In some windy conditions, negative pressure at the duct weatherhood outside the
house wall may draw hot exhaust gases from the fireplace backwards through the duct to outdoors. Check
the outdoor air duct for soot deposits when the full system is cleaned and inspected at least once each
year.