
11
ROOF JACKS
Only use the appropriate roof jack.
See TABLE 4 & TABLE 5 for correct application.
Do not exceed the maximum height as determined from
TABLE 4 & TABLE 5. Installer should allow an addition-
al 1--
1
/
2
” travel before the flue pipe assembly is fully ex-
tended against the built--in stop. This provides an addi -
tional safeguard against the flue assembly being pulled
from the roof jack during transportation or other stress
conditions.
Improper installation may d amage the equipment, can
create a hazard, and will void the warranty.
Carefully follow all instructions and warnings to avoid
Fire, Explosion, Or Asphyxiation.
Locating and Cuttin g Roof Jack Openin g
To facilitate the proper installation of the roof jack, it is very
important that the roof jack opening in the ceiling and roof be
on the same vertical center line as the furnace flue collar.
SeeFigure7.
The dimensions shown in Figure 7 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 dur-
ing construction, cover furnace and flue opening to
prevent debris from entering flue and combustion air
when hole is cut for roof jack.)
9--3/4”
12--1/4”
Mark Center
Figure 7 — Location of Roof Jack Opening
TEMPLATE FRONT
These dimensions may be
used if furnace fits snug
against wall.
Installing Roof Jack in Roof
(Se e Figure 8 & Figure 9 for Dime nsiona l re quire ment s.)
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 in-
sure a better alignment of the flue pipe and furnace flue col-
lar. Caulk completely around the underside of the roof jack
flashing to provide a rain tight seal, before securing roof jack
flashing to roof. After roof jack flashing has been secured to
the roof, caulk carefully all around swivel joint with sealant
supplied by furnace manufacturer.
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