Allied Air Enterprises WARM AIR GAS FURNACE 92G1UH - Manual (Page 30)

506724-01 Page 30 of 57 Issue 1108
Details of Exhaust Piping Terminations for Non-Direct
Vent Applications
Exhaust pipes may be routed either horizontally through an
outside wall or vertically through the roof. In attic or closet
installations, vertical termination through the roof is preferred.
Figures 39 through 42 show typical terminations.
1. Exhaust piping must terminate straight out or up as
shown. The termination pipe must be sized as listed in
Table 6. The specified pipe size ensures proper velocity
required to move the exhaust gases away from the
building.
2. On field supplied terminations for side wall exit, exhaust
piping may extend a maximum of 12 inches (305 mm)
for 2” PVC and 20” (508 mm) for 3” (76 mm) PVC beyond
the outside wall. See Figure 40.
FIGURE 35
DIRECT VENT CONCENTRIC ROOFTOP TERMINATION
71M80, 69M29 or 60L46 (US)
44W92 or 44W93 (Canada)
Minimum
Above Average
Snow
Accumulation
SHEET METAL STRAP
(Clamp and sheet metal strap
must be field installed to support
the weight of the termination kit.)
FLASHING
(Not Furnished)
CLAMP
FIELD−PROVIDED
REDUCER MAY BE REQUIRED
TO ADAPT LARGER VENT
PIPE SIZE TO TERMINATION
1 1/2" (38mm) accelerator
provided on 71M80 & 44W92
12” (305mm) INTAKE
AIR
EXHAUST
VENT
12" (305mm) Min.
above grade or
average snow
accumulation.
FIGURE 36
DIRECT VENT CONCENTRIC WALL TERMINATION
71M80, 69M29 or 60L46 (US)
44W92 or 44W93 (Canada)
INTAKE
AIR
INTAKE
AIR INTAKE
AIR
OUTSIDE
WALL
GRADE
CLAMP
(Not Furnished)
FIELD−PROVIDED
REDUCER MAY BE REQUIRED
TO ADAPT LARGER VENT
PIPE SIZE TO TERMINATION
EXHAUST
VENT
1−1/2" (38mm) accelerator
provided on 71M80 & 44W92
EXHAUST
VENT
FIGURE 37
EXHAUST
VENT
INTAKE
AIR
5−1/2"
(140mm)
Front View
12"
(305mm)
5"
(127mm)
18" MAX.
(457mm)
EXHAUST VENT
INTAKE
AIR
OPTIONAL VENT TERMINATION FOR MULTIPLE UNIT
INSTALLATION OF DIRECT VENT WALL TERMINATION KIT
Inches (mm)
Side View
12" (305mm) Min.
above grade or
average snow
accumulation.
optional intake elbow
DIRECT VENT APPLICATION
USING EXISTING CHIMNEY
NOTE − Do not discharge exhaust gases directly into any chimney or vent st ack. If ver-
tical discharge through an existing unused chimney or stack is required, insert piping
inside chimney until the pipe open end is above top of chimney and terminate as illus-
trated. In any exterior portion of chimney, the exhaust vent must be insulated.
FIGURE 38
3" − 8"
(76mm−
203mm)
STRAIGHT−CUT OR
ANGLE−CUT IN DIRECTION
OF ROOF SLOPE *
EXHAUST VENT
1/2" (13mm)
WEATHERPROOF
INSULATION
SHOULDER OF FITTINGS
PROVIDE SUPPORT
OF PIPE ON TOP PLATE
ALTERNATE
INTAKE PIPE
INTAKE PIPE
INSULATION (optional)
EXTERIOR
PORTION OF
CHIMNEY
INSULATE
TO FORM
SEAL
SHEET
METAL TOP
PLATE
*SIZE TERMINATION
PIPE PER TABLE 6.
Minimum 12" (305MM)
above chimney top
plate or average snow
accumulation
8" − 12"
(203mm − 305mm)
3"−8"
(76mm−203mm)