Drolet HeatPack DF00500, Installation And Operating Instructions Manual

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HeatPack Furnace Installation and Operation Manual
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Reducing the combustion air will do two things. First, the combustion rate will decrease,
which will spread the thermal energy of the fuel over a longer period of time. In addition,
the velocity of the exhaust gas decreases, which allows better heat transfer in the heat
exchanger and chimney.
The closure of the main air intake reduces the intensity of the flames which indicates the
achievement of optimum performance. If the flames diminish in intensity at a point where it
almost disappears, it is an indication that the air inlet damper was closed too soon or the
firewood used is dry enough. If the wood is dry enough and the air control is closed when
the unit is at a stable temperature, the flames will decrease but remain strong and stable to
provide efficient heating.
10.4 Additional fresh air supply
When the furnace and the chimney are completely cold, it may be necessary to provide
fresh air by opening a door or a window for a few minutes while lighting the fire.
Take note that a house constructed or renovated in order to be airtight may lack the
volume of fresh air necessary for the proper combustion of a solid-fuel heating appliance.
In such a case, when starting up the fire, do not operate appliances that evacuate air
outside the house, such as:
•
Range hood
•
Air exchanger
•
Clothes dryer
•
Bathroom blower
•
Ventilated central vacuum system
Exhaust blowers that are in a fuel storage room should be installed so as not to create
negative pressure in the room where the solid fuel appliance is located.
A fresh air supply may be necessary to prevent solid fuel units from rejecting products of
combustion into the house. The indications used to determine if an additional fresh air
supply is necessary are not appropriate for all the situations. When in doubt, it is
recommended to install a fresh air supply.
A fresh air supply may be needed if:
-
Solid fuel units present anomalies, such as irregular draft, smoke return, bad
combustion, and/or reversed draft (whether there is combustion or not);
-
Existing solid fuel units such as a stove or fireplace release odours, heat badly, cause
smoke returns, or reversed draft (whether there is combustion or not );
-
The opening of a window, even slightly, in calm weather (windless), eliminates every
problem mentioned above ;
-
The house is equipped with a tight vapour barrier and adjusted windows, and/or is
equipped with an interior air mechanical evacuation device ;
- There is excessive condensation on the windows in winter; and
-
The house is equipped with a ventilation system.
If, according to these symptoms or other similar ones, there is insufficient combustion air, it
is necessary to ensure an additional combustion air supply