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Report prepared for Guillaume Thibodeau-Fortin (Stove Builder International Inc.) on
6/8/2020 7:48:41 AM
MANUAL INSTALLATION AND OPERATION WFP-75 8411 ENGLISH
OF 40)
8.7
Non combustible Shelf Installation
It is possible to install a shelf but it must be made of non combustible materials. It must be
installed at, at least, 52" from the base of the fireplace. THE SHELF WILL BE HOT. DO NOT
PUT COMBUSTIBLE MATERIALS ON THE SHELF.
9. The Venting System
The venting system, acts as the engine that drives your wood heating system. Even the best
fireplace will not function safely and efficiently as intended if it is not connected to a suitable
chimney. The heat in the flue gases that pass from the fireplace into the chimney is not waste
heat. This heat is what the chimney uses to make the draft that draws in combustion air, keeps
smoke inside the fireplace and safely vents exhaust to outside. Heat in the flue gas can be seen
as the fuel the chimney uses to make draft.
9.1
Location
The location of the chimney is crucial for the proper functioning of the appliance. The chimney
should be installed within the house rather than up an outside wall and should rise straight up
through the tallest part of the house. This installation benefits from being enclosed within the
warm house environment, produce stronger draft, accumulate fewer creosote deposits and will
be unaffected by cold temperatures or harsh winds. Outside chimneys will lead to cold back
drafting when there is no fire in the fireplace, slow kindling of new fires, and smoke roll-out when
the door is open for loading.
On the other hand, excessive draft will make the fire uncontrollable, creating very high
temperatures in the unit as well as in the chimney and seriously damaging them. A reddish glow
on the unit and on the chimney components indicates overheating. Excessive temperatures can
cause a chimney fire.
9.2
Supply of Combustion Air
The safest and most reliable supply of combustion air for a fireplace is from the room in which
it is installed. Room air is already preheated so it will not chill the fire, and its availability is
not affected by wind pressures on the house. The only case in which the fireplace may not
have adequate access to combustion air is if the operation of a powerful exhaust device (such
as a kitchen range exhaust) causes the pressure in the house to become negative relative to
outdoors.
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Stove Builder International Inc. | 46345 | Rev: Apr 13 2020 12:33PM | Uncontrolled Copy
WFP-75 8411
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