Roof Jacks; Locating And Cutting Roof Jack Opening; Installing Roof Jack In Roof; Figure 7 - Location Of Roof Jack Opening - Evcon DGAM056BDD Installation Instructions Manual

CAUTION
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-
1
al 1-- / " travel before the flue pipe assembly is fully ex-
2
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 damage 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 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
be on the same vertical center line as the furnace flue collar.
See Figure 7.
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
during construction, cover furnace and flue opening to
prevent debris from entering flue and combustion air
when hole is cut for roof jack.)

ROOF JACKS

Figure 7 — Location of Roof Jack Opening

Installing Roof Jack in Roof

(See Figure 8 & Figure 9 for Dimensional requirements.)
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.
11
Mark Center
9--- 3/4" 12--- 1/4"
These dimensions may be
used if furnace fits snug
against wall.
TEMPLATE FRONT