StyleCrest Installation Manual

11
Installing The Roof Jack
1. Apply caulking compound on underside of roof flashing
to form a continuous strip at least 3/8” wide around the
underside of the perimeter of the flashing. For flat roof,
see Figure 20 or see Figure 21 if roof is pitched.
2. Connect roof jack assembly to the furnace. Insert
telescoping roof jack assembly through the opening
cut on the roof.
3. Connect inner flue pipe to vent collar of the furnace.
See Figure 22.
4. Connect combustion air pipe to furnace collar with sheet
metal screw. See Figure 22.
NOTES:
• It is recommended that the connection of the combustion
air pipe to the furnace be made before the flashing is
secured to the roof to maintain alignment of roof jack
and furnace connections.
• For replacement furnaces, be sure the inner flue pipe
connects over the furnace vent collar. DO NOT use a
smaller diameter inner flue pipe which could slide
inside the furnace vent collar and restrict the flow
of furnace flue products.
5. Attach roof flashing. If necessary, shift roof flashing
slightly in the roof opening so that assembly is in
alignment with furnace.
NOTE: If flashing is mounted on 12 degree angle, it
may be necessary to adjust the angle to match the roof
pitch; (1/12 - 4/12 maximum).
6. Press down firmly on roof flashing (over caulking) to
make the seal with roof water tight.
7. Secure flashing with appropriate fasteners. NOTE: For
added protection against leaks, coat the flashing plate
and fasteners with approved roofing compound.
NOTE: Upper roof jack crown to be stored in a
prominent location inside manufactured home until
on-site installation.
Installing Transit-Mode Venting System
(Before Home is Moved to Site)
NOTE: For transit purposes, the transit kit (P/N 903838)
should be installed before home is moved to site.
1. Furnace must be installed in accordance to furnace
installation manual.
2. Select appropriate roof jack from Table 3, (page 10)
3. Roof jack (less upper roof jack crown), with weather
cap to be installed as described in Installing The Roof
Jack section.
4. Install the four warning tags (factory supplied) on these
items:
• Weather cap
• Fuel line connection point
• Furnace flame observation door
• Furnace wall thermostat
Figure 20. Flat Roof
Secure roof jack with
appropriate fasteners
after connecting to
furnace
Caulk under roof
flashing to prevent
water leakage
Roof
Ceiling
Optional 2-piece ceiling
ring #902521
Upper Roof Jack Section
Secure lower roof
jack section with
no. 10 S.M. screws
Caulk under roof
ashing to prevent
water leakage
Optional Slant
Deck Flashing
Secure ashing
with appropriate
fasteners
Ceiling
Figure 21. Pitched Roof
CONNECT OUTER
FLUE SHIELD
INNER FLUE PIPE
VENT COLLAR
MOUNTING
FLANGE
Figure 22. Combustion Air Pipe Connection