Lennox MERIT ML193UH Installation Instructions Manual page 29

EXHAUST
VENT
12" (305mm)
Minimum
Above Average
Snow
Accumulation
CLAMP
DIRECT VENT CONCENTRIC ROOFTOP TERMINATION
71M80, 69M29 or 60L46 (US)
44W92 or 44W93 (Canada)
FIGURE 40
FIELD−PROVIDED
REDUCER MAY BE REQUIRED
TO ADAPT LARGER VENT
PIPE SIZE TO TERMINATION
OUTSIDE
WALL
EXHAUST
VENT
INTAKE
CLAMP
AIR
(Not Furnished)
DIRECT VENT CONCENTRIC WALL TERMINATION
71M80, 69M29 or 60L46 (US)
44W92 or 44W93 (Canada)
FIGURE 41
EXHAUST
VENT
5"
(127mm)
INTAKE
AIR
18" MAX.
(457mm)
EXHAUST VENT
Inches (mm)
optional intake elbow
Side View
OPTIONAL VENT TERMINATION FOR MULTIPLE UNIT
INSTALLATION OF DIRECT VENT WALL TERMINATION KIT
(22G44, 44J40, 30G28 or 81J20)
FIGURE 42
1 1/2" (38mm) accelerator
provided on 71M80 & 44W92
kits for ML193UH045P24B,
070P24B & 070P36B
FLASHING
INTAKE
(Not Furnished)
AIR
SHEET METAL STRAP
(Clamp and sheet metal strap
must be field installed to support
the weight of the termination kit.)
FIELD−PROVIDED
REDUCER MAY BE REQUIRED
TO ADAPT LARGER VENT
PIPE SIZE TO TERMINATION
1−1/2" (38mm) accelerator
provided on 71M80 & 44W92
kits for ML193UH045P24B,
070P24B & 070P36B
INTAKE
AIR
EXHAUST
VENT
INTAKE
12" (305mm) Min.
AIR
above grade or
average snow
accumulation.
GRADE
12"
(305mm)
5−1/2"
(140mm)
Front View
12" (305mm) Min.
above grade or
average snow
INTAKE
accumulation.
AIR
Front View
INTAKE
AIR
Top View
1/2" (13mm) Foam Insulation
in Unconditioned Space
FIELD−
PROVIDED
REDUCER MAY
BE REQUIRED
TO ADAPT
LARGER VENT
PIPE SIZE TO
TERMINATION
DIRECT VENT WALL TERMINATION KIT
Front View
INTAKE
AIR
1/2" (13MM) Foam Insulation
in Unconditioned Space
FIELD−
PROVIDED
REDUCER MAY
BE REQUIRED
TO ADAPT
LARGER VENT
PIPE SIZE TO
TERMINATION
DIRECT VENT WALL TERMINATION KIT
2" EXTENSION FOR 2" PVC
PIPE1" EXTENSION FOR 3"
PVC PIPE
FURNACE
INTAKE
PIPE
FLUSH−MOUNT SIDE WALL TERMINATION
Page 29
EXHAUST VENT
SIZE
TERMINATION
PIPE PER
TABLE 8.
EXHAUST VENT
INTAKE AIR
6 (152mm) MIN.
OUTSIDE WALL
(30G28 or 81J20)
FIGURE 43
EXHAUST VENT
SIZE
TERMINATION
PIPE PER
TABLE 8.
Top View
EXHAUST VENT
INTAKE AIR
8" (206MM) MIN.
OUTSIDE WALL
(22G44 or 44J40)
FIGURE 44
FURNACE
EXHAUST
4''
PIPE
GLUE EXHAUST
END FLUSH INTO
TERMINATION
FLAT
1−1/2" ACCELERATOR
SIDE
(
all −45, −070 and −090 units)
51W11
FIGURE 45