Duct Connector Selection - Nordyne M1GH 056 Installation Instructions And Owner's Manuals

APPLICATION NOTES:
a. FAW, FAWT, SAW and SAWT Series Roof Jacks with
a 5" diameter inner vent pipe may be used with all
models of M1 Series gas and oil furnaces.
b. F=Flat Flashing; flexes from 0/12 to 1/12 roof slope.
c. S=Slant Flashing. 2.5/12 Slope flexes from 1/12 to
4/12 roof slope, 4/12 flexes from 3/12 to 5/12.
d. Stainless steel roof jacks are available.
e. If the roof jack crown is covered or blocked with snow,
the furnace will not operate properly. If the home is
located in regions where snow accumulation exceeds
7" (HUD snowload zones) use an external roof jack
extension p/n 901937.
f. M1 furnaces may be used with roof jacks as tall as 170"
(except M1M 056 & M1B 066 models, which are
limited to 120"). An internal roof jack extension (p/n
901935 - 10", p/n 903107 - 18") can be used to
increase roof jack height. All connections inside the
home must be made below the ceiling.
These extensions are available as optional accessories and
may be purchased through your NORDYNE distributor.
Model Number
(F,S)AW(T)1523-(0,2,4)(A,S)
(F,S)AW(T)2135-(0,2,4)(A,S)
(F,S)AW(T)2747-(0,2,4)(A,S)
(F,S)AW(T)3563-(0,2,4)(A,S)
(F,S)AW(T)5195-(0,2,4)(A,S)
S AW T
F= FLAT FLASHING
S= SLANT FLASHING
TYPE:
BLANK=NON-TRANSIT
AW= ALL WEATHER
T= TRANSIT MODE
Figure 5a. All Weather Roof Jack Assemblies
MODEL
NUMBER
FO1323 -5
FO2343 -5
SO1835 -5
SO2447 -5
SO3263 -5
SO4895 -5
SOT2442 -5
SOT2745 -5
SOT4581 -5
FOT2846 -5
S O
S= SLAT FLASHING
T= TRANSIT
F= FLAT FLASHING
MODE
TYPE
O= TYPE; STANDARD
H= HIGH WIND
A= ARCTIC ROOF JACK
Table 5b. Roof Jack Assemblies
Approx. Length
Below Flashing
15" - 23"
21" - 35"
27" - 47"
35" - 63"
51" - 95"
20 32 - 2 S
FLUE STEEL TYPE
A= ALUMINIZED
S=STAINLESS
MIN. ADJ.
FLASHING
LENGTH
PITCH/12" RISE
MAX. ADJ.
0=FLAT
LENGTH
2=2.5/12
4=4/12
APPROX. ADJ.
LENGTHS*
BELOW FLASHING
13" - 23"
23" - 43"
18" - 35"
24" - 47"
32" -63"
48" - 95"
24" - 42"
27" - 45"
45" - 81"
28" - 46"
T 27 45 -5
5 = 5" FLUE DIA.
MAX. ADJ.
LENGTH
MIN. ADJ.
LENGTH
Roof Jack
Flat Roof
Ceiling Cavity
Ceiling
Flue Pipe
Combustion
Air Pipe
Furnace
Figure 6. Roof Jack Assemblies
PITCHED
ROOF
CEILING CAVITY
CEILING
Figure 7.
ROOF JACK WITH
1 2
2 /12 SLANT
FLASHING
5/12 ROOF SLOPE

10. DUCT CONNECTOR SELECTION

a. Determine depth of floor cavity from surface of floor to
top of supply air duct (See Figure 9).
b. Select appropriate model from Table 7 which matches
X-dimension of the floor cavity. To maximize air delivery,
remove reducer "C" (see Figure 11) to obtain the
largest open area that will fit the duct/floor construction.
This joint
may be
above ceiling
Flashing
"A"
"B"
56" or 76"
ROOF JACK
SLANT DECK
FLASHING
"X" (SEE TABLE 1)
ROOF OPENING
CEILING OPENING
1 2
/12
2
SLANT DECK
Figure 8.
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