9
2. A minimum upward slope of 1/4 inch per horizontal foot must be
respected.
DAMPER
The barometric damper must be adjusted so that the maximum draft measured at the
furnace outlet is limited to -0.06 in. w.c..
However, the minimum draft to be respected at all
times is -0.04 in. w.c. on the solid fuel side.
WARNING: DRAFT HIGHER THAN -0.06” W.C. MAY CAUSE AN UNCONTROLLABLE
FIRE.
COMBUSTION AIR
When 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 while lighting.
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 operation of heating appliances.
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” in diameter in or near the
room where the heating appliance is installed (see drawing on the next page). When doing
so, it is preferable to choose a wall which is not exposed to dominant winds, depending on the
conditions surrounding your house.
