Page 30
7. If intake and exhaust piping must be run up a side wall
to position above snow accumulation or other ob
structions, piping must be supported. At least one
bracket must be used within 6” from the top of the el
bow and then every 24” (610mm) as shown in figure
36, 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 17.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. A multiple furnace installation may use a group of up to
four terminations assembled together horizontally, as
shown in figure 34.
FIGURE 32
DIRECT VENT CONCENTRIC ROOFTOP TERMINATION
71M80, 69M29 or 60L46 (US)
41W92 or 41W93 (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
1-1/2” (38mm) accelerator
provided on 71M80 & 44W92
kits for ML193DF045P36B- &
070P36B
12” (305mm)
12” (305mm) Min.
above grade or
average snow ac
cumulation.
FIGURE 33
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
REDUCER MAY BE
REQUIRED TO ADAPT
LARGER VENT PIPE
SIZE TO TERMINA
TION
1-1/2” (38mm) accelerator
provided on 71M80 &
44W92 kits for
ML193DF045P36B- &
070P36B
FIGURE 34
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
average snow ac
cumulation.
optional intake elbow
FIGURE 35
2” EXTENSION FOR 2” PVC
PIPE1” EXTENSION FOR 3”
PVC PIPE
1-1/2” ACCELERATOR
(
all -45, -070 and -090 units)
FURNACE
EXHAUST
PIPE
FURNACE
INTAKE
PIPE
4''
GLUE EXHAUST
END FLUSH INTO
TERMINATION
FLAT
SIDE
FLUSH-MOUNT SIDE WALL TERMINATION
51W11 (US) or 51W12 (Canada)
