Lennox ELITE Series Installation Instructions Manual page 30

EL195UH DIRECT VENT APPLICATION
USING EXISTING CHIMNEY
8" − 12"
(203mm − 305mm)
Minimum 12" (305MM)
above chimney top
plate or average snow
accumulation
*SIZE TERMINATION
PIPE PER TABLE 6.
NOTE − Do not discharge exhaust gases directly into any chimney or vent stack. 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.
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 pre-
ferred. Figures 41 through 44 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 veloc-
ity required to move the exhaust gases away from the
building.
2 − On field supplied terminations for side wall exit, ex-
haust piping may extend a maximum of 12 inches
(305mm) for 2" PVC and 20 inches (508mm) for 3"
(76mm) PVC beyond the outside wall. See figure 42.
12" (305mm)
ABOVE AVE.
SNOW
ACCUMULATION
3" (76mm) OR
2" (51mm) PVC
PROVIDE SUPPORT
FOR EXHAUST LINES
NON−DIRECT VENT ROOF TERMINATION KIT
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STRAIGHT−CUT OR
ANGLE−CUT IN DIRECTION
3"−8"
OF ROOF SLOPE *
(76mm−203mm)
EXHAUST VENT
1/2" (13mm)
WEATHERPROOF
INSULATION
SHOULDER OF FITTINGS
INTAKE PIPE
PROVIDE SUPPORT
INSULATION (optional)
OF PIPE ON TOP PLATE
SHEET
METAL TOP
PLATE
3" − 8"
(76mm−
203mm)
INSULATE
TO FORM
SEAL
FIGURE 40
SIZE TERMINATION
PIPE PER TABLE 6.
1/2" (13mm) FOAM
INSULATION
UNCONDITIONED
ATTIC SPACE
(15F75 or 44J41)
FIGURE 41
search engine
1/2" (13mm) ARMAFLEX
UNCONDITIONED SPACE
FIELD−PROVIDED
REDUCER MAY
BE REQUIRED TO
ADAPT LARGER
VENT PIPE SIZE
TO TERMINATION
ALTERNATE
INTAKE PIPE
NON−DIRECT VENT FIELD SUPPLIED WALL TERMINATION OR
EXTERIOR
PORTION OF
CHIMNEY
3 − If exhaust piping must be run up a side wall to position
above snow accumulation or other obstructions, pip-
ing must be supported every 24 inches (610mm) as
shown in figure 43. When exhaust piping must be run
up an outside wall, any reduction in exhaust pipe size
must be done after the final elbow.
UNCONDITIONED
SPACE
*WALL SUPPORT
FIELD−PROVIDED
REDUCER MAY BE
REQUIRED TO
ADAPT LARGER
VENT PIPE SIZE TO
TERMINATION
1/2" (13mm) FOAM
INSULATION IN
UNCONDITIONED
SPACE
NON−DIRECT VENT FIELD SUPPLIED WALL TERMINATION
EXTENDED OR (15F74) WALL TERMINATION VENT PIPE
*Use wall support every 24" (610). Use two supports if extension is
Page 30
12" (305mm) MAX. for 2" (51mm)
20" (508mm) MAX. for 3" (76mm)
INSULATION IN
SIZE TERMINATION
PIPE PER TABLE 6.
(15F74) WALL TERMINATION KIT
FIGURE 42
12" (305mm) MAX. for 2" (51mm)
20" (508mm) MAX. for 3" (76mm)
6" (152mm)
Max
OUTSIDE WALL
EXTENDED
greater than 24" but less than 48".
FIGURE 43
1/2" (13mm)
ARMAFLEX
INSULATION
PVC REDUCER
12" MIN.
(305mm)
Above Grade or
average snow
accumulation
SIZE TER-
MINATION
PIPE PER
TABLE 6.
12" (305mm)
ABOVE GRADE OR
AVERAGE SNOW
ACCUMULATION
1/2" (13mm) FOAM
INSULATION