Page 21
7 - If intake and exhaust piping must be run up a side
wall to position above snow accumulation or other
obstructions, piping must be supported. At least one
bracket must be used within 6” from the top of the
elbow and then every 24” (610mm) as shown in
gure 29, to prevent any movement in any direction.
When exhaust and intake piping must be run up an
outside wall, the exhaust piping must be terminated
with pipe sized per table 7.The intake piping may
be equipped with a 90° elbow turndown. Using
turndown will add 5 feet (1.5m) to the equivalent
length of the pipe.
8 - Based on the recommendation of the manufacturer,
a multiple furnace installation may use a group
of up to four terminations assembled together
horizontally, as shown in gure 27.
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
INTAKE
12” (305mm)
FIGURE 25
12” (305mm) Min.
above grade or
cumulation.
DIRECT VENT CONCENTRIC WALL TERMINATION
71M80, 69M29 or 60L46 (US)
41W92 or 41W93 (Canada)
INTAKE
AIR
EXHAUST
AIR
INTAKE
AIR
INTAKE
AIR
EXHAUST
AIR
OUTSIDE
WALL
GRADE
CLAMP
(Not Furnished)
FIELD-PROVIDED
QUIRED TO ADAPT
LARGER VENT PIPE
SIZE TO TERMINATION.
FIGURE 26
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
(30G28 or 81J20)
Inches (mm)
Side View
12” (305mm) Min.
above grade or
cumulation.
optional intake elbow
FIGURE 27
PIPE1” EXTENSION FOR 3”
PVC PIPE
1-1/2” ACCELERATOR
FURNACE
EXHAUST
PIPE
FURNACE
INTAKE
PIPE
4''
GLUE EXHAUST
END FLUSH INTO
TERMINATION
FLAT
SIDE
FLUSH-MOUNT SIDE WALL TERMINATION KIT
51W11 (US) or 51W12 (Canada)
FIGURE 28
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