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NOTE: Type of chimney: Class A All-Fuel also referred to as
Low-Heat appliance type chimney per Uniform Mechanical
Code:
Chimney, low-heat appliance type is a factory built, masonry
or metal chimney suitable for removing the products of
combustion from fuel-burning low-heat appliances produc-
ing combustion gases not in excess of 1000°F (538°C) under
normal operating conditions but capable of producing com
bustion gases of 1400°F (760°C) during intermittent forced
firing for periods up to one hour. All temperatures are
measured at the appliance flue outlet.
1.The wood furnace should be the only heating appliance
using a chimney flue. One furnace per flue.
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' above the
highest point of the house, or 2' above the point at
which the chimney is 10' from the roof.
7.The chimney should be relatively straight and vertical.
8.The portion of an all-fuel metal chimney that extends
above the roof should be well secured.
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 NEEDCREOSOTE — FORMATION AND NEED
CREOSOTE — FORMATION AND NEEDCREOSOTE — FORMATION AND NEED
CREOSOTE — FORMATION AND NEED
FOR REMOVALFOR REMOVAL
FOR REMOVALFOR REMOVAL
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 relatively cool
chimney flue of a slow-burning fire. As a result, creosote
residue accumulates on the flue lining. When ignited, this
creosote makes an extremely hot fire.
The chimney connector and chimney should be inspected at
least twice monthly during the heating season to determine if a
creosote build-up has occurred. If creosote has accumulated, it
should be removed to reduce the risk of a chimney fire.
SMOKE PIPE INSTALLATIONSMOKE PIPE INSTALLATION
SMOKE PIPE INSTALLATIONSMOKE PIPE INSTALLATION
SMOKE PIPE INSTALLATION
Clearances to combustible materials (i.e. paneling, ceiling 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" (45.72cm)
Single Wall Stainless Steel
or Black Pipe
Double Wall Stainless Steel 6" (15.24cm) Model 1600
8" (20.32cm) Model 1800
Class A All-Fuel or Equivalent 2" (5.08cm)
CEILING OR WALL
18" (45.72cm)
COMBUSTIBLES
SMOKE PIPE
2 FT. (60.96cm) MINIMUM
3 FT. (91.44cm)
MINIMUM
CAP SHOULD HELP
PREVENT DOWNDRAFT
WHILE STILL PROVIDING
ADEQUATE EXHAUST.
RECOMMENDED
MINIMAL 20 FT.
(6.10m) HEIGHT
CHIMNEY FLUE
SHOULD BE
CONSTANT DIAMETER
THROUGHOUT ITS
ENTIRE HEIGHT.
CHIMNEY FLUE
MUST BE AS
LARGE OR
LARGER THAN
FURNACE FLUE
PIPE
APPROVED
CHIMNEY
CLEANOUT DOOR
SHOULD HAVE
AIRTIGHT FIT. DO
NOT LEAVE OPEN
WHEN FURANCE IS
IN OPERATION.
CHIMNEY THIMBLE SHOULD BE
CONSTRUCTED OF FIRE CLAY, AND
SHOULD FIT TIGHTLY TO FLUE PIPE.
According to NFPA standards, single wall stove pipes can be
within 9" (22.86cm) of combustibles provided an approved fire
retardant material covered with 28 gauge sheet metal, spaced
out 1" (2.54cm) on non-combustible spacers, is utilized. See
illustration.
When using a Class A or double wall flue pipe connection,When using a Class A or double wall flue pipe connection,
When using a Class A or double wall flue pipe connection,When using a Class A or double wall flue pipe connection,
When using a Class A or double wall flue pipe connection,
follow the manufacturer's instructions.follow the manufacturer's instructions.
follow the manufacturer's instructions.follow the manufacturer's instructions.
follow the manufacturer's instructions.
TOP OF CHIMNEY MUST BE
2 FT. (60.96cm) ABOVE
HIGHEST POINT OF ROOF
MINIMAL 3 FT.
(91.44cm) FROM TOP
OF CHIMNEY TO
POINT AT WHICH IT
PASSES THROUGH
THE ROOF.
9" (22.86cm)
18" (45.72cm)
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