9
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. H2O 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, no matter what
type of furnace.
COMBUSTION AIR
In the event that the furnace and the chimney are completely cold, it might be necessary before lighting, to provide
fresh air by opening a door or a window for a few minutes.
Take note that a house constructed or renovated in order to be airtight is liable to lack fresh air which is necessary
for a proper combustion and a proper operation of heating units.
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
- Cloths 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 which is not exposed to extreme winds,
according to the conditions surrounding your house.
N.B. The owner of the furnace is responsible for the room salubrity in case of negative pressure or temporary
negative pressure.
Insulated conduit full lenght
Fresh air
intake
Exterior
all
Free air
entr
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