Lennox G51MP SERIES Installation Instructions Manual page 28

EXHAUST
12" (305) ABOVE
TERMINATION
AVERAGE SNOW
ACCUMULATION
INTAKE
TERMINATION
EXHAUST
DIRECT VENT CONCENTRIC ROOFTOP TERMINATION
(71M80, 69M29 or 60L46)
FIGURE 33
Inches (mm)
EXHAUST
INTAKE
FIELD−PROVIDED
REDUCER MAY
BE REQUIRED TO
ADAPT LARGER
VENT PIPE SIZE
TO TERMINATION
DIRECT VENT CONCENTRIC WALL TERMINATION
(71M80, 69M29 or 60L46)
FIGURE 34
Inches(mm)
UNCONDITIONED
SPACE
OUTSIDE WALL
PROVIDE SUPPORT
FOR INTAKE AND
EXHAUST LINES EVERY
36" (914)
FIELD−PROVIDED
REDUCER MAY
BE REQUIRED TO
ADAPT LARGER
VENT PIPE SIZE
TO TERMINATION
1/2" (13) FOAM
INSULATION IN
UNCONDITIONED
SPACE
SIDE VIEW
DIRECT VENT WALL RING TERMINATION
(15F74)
See venting table 7 for maximum venting lengths with this arrangement.
FIGURE 35
Inches (mm)
FIELD−PROVIDED
REDUCER MAY BE REQUIRED
TO ADAPT LARGER VENT
PIPE SIZE TO TERMINATION
INTAKE
INTAKE
TERMINATION
EXHAUST
TERMINATION
12" (305) Min.
above grade or
average snow
accumulation
12" (305) MAX. for 2" (51)
8 (203)
MIN.
SIZE
TERMINATION
PIPE PER
TABLE 8.
12" (305) ABOVE
AVERAGE SNOW
ACCUMULATION
1/2" (13) FOAM
INSULATION
INTAKE
VENT
1/2" (13) Foam Insulation
in Unconditioned Space
FIELD−
PROVIDED
REDUCER MAY
BE REQUIRED
TO ADAPT
LARGER VENT
PIPE SIZE TO
TERMINATION
Inches (mm)
DIRECT VENT WALL TERMINATION KIT
(22G44, 44J40, 30G28 or 81J20)
EXHAUST
VENT
INTAKE
VENT
Inches (mm)
OPTIONAL VENT TERMINATION FOR MULTIPLE UNIT
INSTALLATION OF DIRECT VENT WALL TERMINATION KIT
(22G44, 44J40, 30G28 or 81J20)
Page 28
EXHAUST VENT
Front View
Top View
EXHAUST VENT
INTAKE VENT
OUTSIDE WALL
FIGURE 36
12"
(305)
5" 5−1/2"
(127)
(140)
18" MAX.
Front View
(457)
EXHAUST VENT
INTAKE
Side View
FIGURE 37
VENT