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Chimneys
Factory Built Chimney Model 2R Type HT is listed for continuous internal temperatures of 1000°F US &
600°F Canada, intermittent temperatures of 2100°F. This system is ideally suited for commercial and
industrial application for the removal of smoke and heat, and is rated for use at a maximum 60 inch water
column internal pressure when used in positive pressure applications. Chimney system size and capacity
information may be obtained from the ASHRAE Handbook – Fundamentals or from the Air Pollution
Engineering Manual of the US Environmental Protection Agency.
NOTE: Model 2R Type HT Chimney Systems used for positive pressure applications must be
sealed with the recommended sealant listed in this manual. NO SEALANT SUBSTITUTES MAY BE
USED. Model 2R Type HT Chimney Systems used for neutral or negative pressure applications do
not require joints to be sealed.
When wood is burned slowly, it produces tar and other organic vapors which combine with expelled
moisture to form creosote. The creosote vapors condense in a relatively cool chimney flue of a slow
burning fire. As a result, creosote residue accumulates on the flu lining. When ignited this creosote makes
an extremely hot fire.
Chimney installations require provisions for cleaning the interior of the chimney. Creosote and soot
formations need to be removed. The chimney should be inspected once every two months during the
heating season to determine if creosote or soot buildup has occurred. If creosote or soot has accumulated,
it should be removed to reduce the risk of fire. Clean-out requirements are as follows:
1. A clean-out must be provided at each change of direction, except where the entire length of chimney
can be inspected and cleaned from either the equipment or the chimney cap.
2. Openings must be at the side or the top, whichever is more accessible.
3. The chimney inspection should be done every two months during the heating season.
4. If creosote or soot has accumulated it should be removed to reduce the risk of fire.
5. Insert the chimney cleaning brush and brush in a downward motion, be sure to scrub all sides of the
chimney thoroughly and remove all debris.
6. Contact local building or fire officials about restrictions and inspections in your area.
NOTE: Model 2R Type HT Factory Built Chimney Systems are intended for commercial and
industrial applications. This system is not intended for family dwellings. Chimney Systems should
be sized in accordance with the appliance manufacturer’s instructions.
When the chimney system is installed in accordance with these installation instructions and the joints are
sealed properly with the recommended sealant, the system will contain a fire within the chimney. A fire can
burn at extremely high temperatures. The system should be dismantled and inspected after any exposure
to a fire. Any section that is distorted or discolored should be replaced. All joints in the system should be
examined.
The sealant expands to ensure a positive seal in the case of a fire, and any sealant that has been exposed
to high temperature must be replaced. This will ensure that the system maintains its integrity against fire
conditions in the future. The manufacturer of this chimney system cannot be responsible for chimney
systems that are not properly maintained or have been subjected to one or more fire conditions.
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