9
ROOF JACKS
WARNING
1. The roof jack as determined from the appropriate
chart on Page 7 must be used.
2. Theinnerfluepipemustbepresent.
3. The outer combustion air tube must be attached to
the top of the furnace with sheet metal screws.
4. Improper installation may damage the equipment,
can create a hazard, and will void the warranty.
CAREFULLY FOLLOW ALL INSTRUCTIONS AND
WARNINGS IN THIS BOOKLET TO AVOID FIRE, EX-
PLOSION, OR ASPHYXIATION.
CAUTION
Do not exceed the maximum height as determined from
Table 1 and 2 on Page 7. Installer should allow an addi-
tional 1-1/2” travel before the flue pipe assembly is fully
extended against the built-in stop. This provides an ad-
ditional safeguard against the flue assembly being
pulled from the roof jack due to upward movement
which may occur when home is being transported or
subjected to other stress conditions.
Failure to follow these instructions may result in fire, ex-
plosion, or asphyxiation.
1. IT IS MANDATORY THAT THE COMBUSTION AIR
PIPE AND FLUE PIPE ASSEMBLY BE FULLY EN-
GAGED, AND THE COMBUSTION AIR PIPE SE-
CURELY FASTENED TO THE FURNACE WITH
SHEET METAL SCREWS IN THE SCREW HOLES
PROVIDED.
2. USE 1/2” BLUNT OR SHARP END SHEET METAL
SCREWS TO FASTEN ROOF JACK COMBUSTION
AIR PIPE TO FURNACE COMBUSTION AIR COL-
LAR. SCREW HOLES ARE PROVIDED IN THE PIPE
AND COLLAR. EXCESSIVELY LONG SCREWS MAY
EXTEND TO FLUE PIPE AND PUNCTURE IT. IF SUB-
STITUTE SCREWS ARE USED, THEY MUST NOT EX-
CEED 1-1/2” IN LENGTH.
Locating and Cutting Roof Jack Opening
To facilitate the proper installation of the roof jack, it is very
important that the roof jack opening in the ceiling and roof
beonthesameverticalcenterlineasthefurnacefluecollar.
SeeFigure5.
The dimensions shown in Figure 5 may be used if the fur-
nace is flush with the walls or adjusted to allow for any spac-
ing away from either wall.
Mark this location on ceiling and scribe a circle with a 5” ra-
dius (10” diameter) around this mark. Cut opening for roof
jack through ceiling and roof. (If furnace was installed
during construction, cover furnace and flue opening to
prevent waste from entering flue when hole is cut for
roof jack.)
Figure 5
9-3/4”
12-1/4”
SAVE
TEMPLATE FRONT
These dimensions may be
used if furnace fits snug
against wall.
Mark Center
Installing Roof Jack in Roof
(See Figure 6 & 7 for Dimensional require-
ments.)
Insert roof jack into opening in the roof. The roof jack
should be secured to the furnace before roof flange
(flashing) is secured to the roof. This will insure a better
alignment of the flue pipe and furnace flue collar. Caulk
around under roof flange to provide a rain tight seal, then
secure roof jack flashing to roof.
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