Humidex
5
Warning!!!
Combustion Appliance Present in Dwelling
Read this Section Carefully
With the presence of appliances evacuating air outside the building envelope (such as range hood,
bathroom fan, dryer, Humidex, etc.) a negative pressure could be created inside the building. As the
pressure inside the building gets lower than the barometric pressure outside, the smoke and gases
from any combustion appliance (oil furnace, gas/wood stove, fireplace, etc.)
may be drawn into
the building rather than go out the chimney.
This problem is usually curable by introducing make-up air inside the building. A fresh air kit (Air
Supply Ventilator) is available from your Humidex dealer, to help relieve the effects of negative air
pressure in the building.