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GENERAL INSTALLATION NOTES (CONT'D)
and two-family dwellings, chimneys which extend
through another story must have an enclosure with a
fire resistance rating equal to or greater than that of
the floor or roof assembly through which they pass.
11. Do not fill the 2" space around the chimney with
household insulation or any other material unless
specified otherwise. Insulation placed in this area
could cause adjacent combustibles to overheat.
12. Self-tapping stainless screws are not required, but
may be used to reinforce the connection and avoid
accidental unlocking of chimney lengths. Use only
1/2" self-tapping screws. Do not penetrate the inner
wall of the chimney.
13. When penetrating an exterior wall or ceiling/roof
assembly, the vapor barrier must be repaired. This
is easily accomplished by attaching the vapor barrier
to the outer perimeter of any wall thimble, Firestop,
or ceiling support component using approved
sealant or tape, while also maintaining the minimum
clearances-to-combustibles to the chimney's outer
wall. When penetrating the building envelope, the
gap between the outer layer of chimney and any
Firestop or wall thimble can be sealed using high-
temperature rated (316°C / 600°F) silicone caulking.
Should you require further clarification, consult your
local authority having jurisdiction.
13. The safe operation of a factory-built chimney as-
sembly is based on the use of parts supplied by the
manufacturer and the performance of the assembly
may be affected if the combination of these parts is
not used in actual building construction.
Acceptance of the assembly is void if the installation
instructions are not followed.
15. Provisions must be made to ensure that all interior
portions of the chimney be accessible for inspection
and cleaning.
The clearance between the chimney and combustible
material must not be less than 2", except where
established by the support. Do not fill this area with
insulation unless directed otherwise in these
instructions.
WARNING
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
2 ft
MIN.
10 ft
2" MIN.
ATTIC
RADIATION
SHIELD
FIRESTOP
7 1/2"
MIN.
BASE TEE
* 18"
MINIMUM
* CLEARANCE CAN BE REDUCED IF A LISTED CHIMNEY CONNECTOR
IS USED.
** CLEARANCES CAN BE LESS THAN 2" WHERE ESTABLISHED BY THE
SUPPORT.
3 ft
MIN.
ROOF RADIATION
SHIELDS (US only)
ENCLOSURE
2" MIN.
SUPPORT
* 18"
MINIMUM
Figure 2
5
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