DRAFT – SETUP
WHAT IS DRAFT
Chimneys operate on the principle that hot air rises above cold air – thus, the hot gas in a chimney rises
because it is less dense than the air outside the house. The rising gas creates a pressure difference
called draft, which draws combustion air into the furnace and expels the exhaust gas outside through the
chimney. The hotter the gas compared with the air outside, the stronger the draft.
Draft is a function of the chimney flue, not the furnace. Many factors including chimney height, cross
sectional area of the chimney, flue gas temperature, insulation value of the chimney wall, dilution air and
total volume of flue gases determine natural chimney draft.
Typical symptoms of an inadequate or poorly functioning flue include:
Smoke spillage into the room or visible smoke out the chimney.
Excessive buildup of condensation or soot in the chimney.
Creosote buildup in the flue.
Poor heating performance.
Improved Draft:
NOTE: The WinterGreen Furnace requires the use of a Draft Inducer which must be used in con-
junction with a Barometric Damper. Both these components must be installed on the furnace
stovepipe prior to furnace operation.
DO NOT OPERATE THE FURNACE WITHOUT THESE 2 (TWO) KEY COMPONENTS INSTALLED.
What is the Draft Inducer:
A Draft Inducer is basically a fan that is installed inline on a stove pipe to improve draft flow up a chim-
ney. This unit is installed on the WinterGreen Furnace to improve wood burning efficiency and to reduce
smoke spillage when opening the loading door to re-fuel.
The WinterGreen Furnace is designed to operate with the draft inducer running when draft boost is re-
quired. The Draft Inducer can be turned off when the furnace is not in use by manual switch located on
the Control panel at the front of the furnace.
Be sure to have the draft inducer switch turned on during re-fueling to prevent smoke spillage
into the room.
What is the Barometric Damper:
The Barometric Damper acts as a draft regulator and
must be used in conjunction with the draft in-
ducer.
It automatically regulates the draft by way of a manually adjusted counter balance pivoting gate.
This unit can be either an insert which is installed into a “tee connector” or as complete assembly.
WinterGreen recommends that you have a qualified Technician or Chimney Specialist perform
the installation of the Draft Inducer and Barometric Damper.
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