CHIMNEY REQUIREMENTS
A fireclay lined masonry or Class A 103HT
If at all possible, use the factory built, class A 103HT chim- ney mentioned above. They are safer and perform better than traditional masonry chimneys. If a masonry chimney is a must, be certain it has a fire clay liner and that it is intact, clean and recently inspected. And remember, masonry chimneys are far more prone to the formation of hazardous creosote.
1.The furnace should be the only heating using the
chimney flue . One furnace per flue outlet.
2.A masonry chimney should have a tile or stainless steel liner.
3.The masonry chimney should not have any missing mortar or loose bricks.
4.There should be no mortar or parts of the chimney blocking the chimney flue.
5.There should be a two inch clearance between any chimney (masonry or metal) and combustibles. (such as the house)
6.The chimney should extend at least 2 foot above the highest point of the house, or 2 foot above the point at which the chimney is 10 foot from the roof.
7.The chimney should be relatively straight and vertical.
8.The portion of an
9.A masonry chimney should be built on footings and not attached to the house.
10.A rain cap, complete with an animal or bird screen, should be installed on top of the chimney.
CREOSOTE - FORMATION AND NEED
FOR REMOVAL
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 the rela- tively cool chimney flue of a
The chimney connector and chimney should be inspected at least twice monthly during the heating season to deter- mine if a creosote
SMOKE PIPE INSTALLATION
Clearances to combustible materials (i.e. paneling, ceil- ing tile, sheet rock, plaster, draperies, casements or wood trim, etc.) will vary with the type of flue connection used. Be sure to maintain the specified clearances for your type of installation.
TYPE OF FLUE | REQUIRED | ||||||||||||||||||
CONNECTION | CLEARANCE | ||||||||||||||||||
24 Gauge or Heavier | 18” | ||||||||||||||||||
Single Wall Stainless Steel |
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or Black Pipe |
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Double Wall, Stainless Steel or | 6” Model 1602 | ||||||||||||||||||
Double Wall, Black Pipe w/ | 8” Model 1802 | ||||||||||||||||||
Stainless Steel Inner wall |
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Class A 103HT | 2” | ||||||||||||||||||
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According to NFPA standards, single wall stove pipes can be within 9” of combustibles provided an approved fire retardant material covered with 28 gauge sheet metal, spaced out 1” on
When using a Class A or double wall flue pipe connection, follow the manufacturer’s instructions.
When constructing a single wall smoke pipe, the following guidelines must be observed.
1.The connector pipe should be 24 gauge or heavier stainless steel or black pipe.
2.Secure all joints with three #8 screws.
3.If the connector pipe must pass through a wall, an ap- proved insulated or ventilated thimble, at least three times the diameter of the smoke pipe must be used. (i.e. a 6” diameter smoke pipe needs an 18” thimble).
4.The connector pipe should never be used as a chimney.
USSC | 3 |