12
© 2023 United States Stove Company
INSTALLATION
much draft may cause excessive temperatures in the
appliance. Inadequate draft may cause back puffing into
the room and ‘plugging’ of the chimney. Inadequate draft
will cause the appliance to leak smoke into the room
through appliance and chimney connector joints. An
uncontrollable burn or excessive temperature indicates
excessive draft. Do not operate with the flue draft
exceeding .06 water column/14.93 Pascals. The draft
can be checked with a draft gauge or manometer. Take
into account the chimney’s location to ensure it is not
too close to neighbors or in a valley which may cause
unhealthy or nuisance conditions.
MASONRY CHIMNEY
Sheathing
Airtight
Cleanout
Door
Floor
Protector
Thimble
12” of Brick
Combustible Wall
1” Clearance
with Firestop
Rafter
Concrete Cap
Flashing
To Stove
1” Clearance
Eave
Flashing
Fireclay Flue
Liner With
Airspace
CAUTION:
BE SURE THAT IF A MASONRY CHIMNEY IS
USED, IT IS SAFELY CONSTRUCTED AND IN GOOD
REPAIR. HAVE THE CHIMNEY INSPECTED BY THE
FIRE DEPARTMENT OR AN INSPECTOR.
Ensure that a masonry chimney meets the minimum
standards of the National Fire Protection Association
(NFPA) by having it inspected by a professional. Make
sure there are no cracks, loose mortar or other signs of
deterioration and blockage. Have the chimney cleaned
before the furnace is installed and operated. When
connecting the furnace through a combustible wall to
a masonry chimney, special methods are needed as
explained in the “Combustible Wall Chimney Connector
Pass-Throughs” Section.
WARNING:
DO NOT CONNECT THIS FURNACE TO A CHIMNEY
FLUE SERVING ANOTHER APPLIANCE.
COMBUSTIBLE WALL CHIMNEY
CONNECTOR PASS-THROUGHS
METHOD A -
12” (304.8 mm) Clearance to Combustible
Wall Member: Using a minimum thickness 3.5” (89 mm)
brick and a 5/8” (15.9 mm) minimum wall thickness clay
liner, construct a wall pass-through. The clay liner must
conform to ASTM C315 (Standard Specification for
Clay Fire Linings) or its equivalent. Keep a minimum of
12” (304.8 mm) of brick masonry between the clay liner
and wall combustibles. The clay liner shall run from the
brick masonry outer surface to the inner surface of the
chimney flue liner but not past the inner surface. Firmly
grout or cement the clay liner in place to the chimney flue
liner.
METHOD B -
9” (228.6 mm) Clearance to Combustible
Wall Member: Using a 6” (152.4 mm) inside diameter,
listed, factory-built Solid-Pak chimney section with
insulation of 1” (25.4 mm) or more, build a wall pass-
through with a minimum 9” (228.6 mm) air space
between the outer wall of the chimney length and wall
combustibles. Use sheet metal supports fastened
securely to wall surfaces on all sides, to maintain the
9” (228.6 mm) air space. When fastening supports to
chimney length, do not penetrate the chimney liner (the
inside wall of the Solid-Pak chimney). The inner end of
the Solid-Pak chimney section shall be flush with the
inside of the masonry chimney flue, and sealed with a
non-water soluble refractory cement. Use this cement to
also seal to the brick masonry penetration.
