Locating & Cutting Roof Openings - Nordyne M1B Installation Instructions Manual

CEiLiNG OPENING
Figure 17. Example of Fiat Jack
with Flashing
0
Figure 18. Example of 21/2112Slant Jack
with Flashing
If the home is located in regions where snow
accumulation exceeds 7" (HUD snowload zones)
use an external roof jack extension (p/n 901937).
Extensions are optional accessories and may be
purchased through your NORDYNE distributor.
Locating and Cutting Roof & Ceiling Openings
DO NOT ALLOW DEBRIS TO FALL INTO THE
FURNACE. THIS COULD CAUSE UNSAFE
OPERATION AND VOIDS THE FURNACE
WARRANTY. Use the top cap that comes with
the furnace packaging (or alternate protector) to
prevent debris from falling intothe furnace before
the final roof jack connection is made
1. Locate centerof Roof Jackopening, measure
13 1/2" from the rear wall of closet or alcove
along the center line of furnace and floor
opening. See Figure 19.
2. Cut ceiling and roof holes as follows:
, Ceiling = 8 3/4" (222 mm) diameter
Roof = 9 3/8" (238 mm) diameter
IMPORTANT:
Refer to the installation
instructions provided with
optional air conditioning
packages when installing
furnaces with optional cooling
coil cabinet or with optional
C* series indoor coils.
0 _=
/ CUT-OUT FOR _ +
_ FLUE AND ) ¢'-
LL \ ROOF JACK /
FURNACE
7 OUTER
DOOR
Figure 19. Cut-Out Dimensions for
Flue & Roof Jack
12
ROOF JACK SERIES
"F Series
"S" Series (2.5 / 12
Pitch only)
IF ROOF PITCH IS:
2"in 12"
2-1/2" in 12"
3"in 12"
3-1/2" in 12"
4"in 12"
4-1/2" in 12"
5"in 12"
5-1/2" in 12"
6"in 12"
6-1/2" in 12"
Optional Deck Flashings for Flat and
SLANT DECK
FLASHING NUMBER
903893 (2.5/12)
903893 (2.5/12)
903894 (3/12)
903894 (3/12)
903895 (4/12)
903895 (2.5/12)
903895 (2.5/12)
903894 (3/12)
903894 (3/12)
903895 (4/12)
2.5/12 Pitch Roof Jacks. 4/12
"X" FACTOR
IS:
2-1/8"
2-1/2"
2-7/8"
3-1/4"
3-5/8"
2-1/8"
2-1/2"
2-7/8"
3-1/4"
3-5/8"
Pitch Roof Jacks not applicable.
Table 5. Slant Deck Flashings