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DAMPER
The barometric control must be adjusted so that the maximum draft measured at the furnace outlet is limited to -
0.06 in. w.c. Please note that a draft higher than -0.06 in. w.c. could result in an uncontrollable fire. On the other
hand, the minimum draft to be respected is -0.04 in. w.c. in the evacuation pipe on the solid fuel side.
3.4 COMBUSTION AIR
In the event that the furnace and the chimney are completely cold, it might be necessary to provide fresh air by
opening a door or a window for a few minutes during the lighting procedure.
Take note that a house constructed or renovated in order to be airtight is liable to lack fresh air necessary for a
proper combustion and operation of flame producing heating appliance.
In such a case, when starting up the fire, do not operate appliances which evacuate air outside the house such
as:
- Range hood
- Air exchanger
- Clothes dryer
- Bathroom fan
- Ventilated central vacuum system
NOTE:
It is recommended to install an outside air inlet of minimum 4” diameter in the room where the heating appliance is
installed (see drawing below). To do so, it is preferable to choose a wall that is not exposed to dominant winds,
depending on the conditions surrounding your house.
.B. The owner of the furnace is responsible for the room salubrity in case of negative pressure or