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2" EXTENSION FOR 2" PVC
PIPE1" EXTENSION FOR 3"
PVC PIPE
FURNACE
INTAKE
PIPE
Figure 33. Flush-Mount Side Wall Termination 51W11
EXHAUST
VENT
12" (305mm)
Minimum
Above Average
Snow
Accumulation
CLAMP
Figure 34. Direct Vent Concentric Rooftop
Termination
71M80, 69M29 or 60L46 (US)
41W92 or 41W93 (Canada)
FIELD-PROVIDED
REDUCER MAY BE REQUIRED
TO ADAPT DIFFERENT VENT
PIPE SIZE TO TERMINATION
OUTSIDE
WALL
EXHAUST
VENT
INTAKE
CLAMP
AIR
(Not Furnished)
Figure 35. Direct Vent Concentric Wall Termination
71M80, 69M29 or 60L46 (US)
41W92 or 41W93 (Canada)
508405-01
FURNACE
EXHAUST
4''
PIPE
GLUE EXHAUST
END FLUSH INTO
TERMINATION
FLAT
1-1/2" ACCELERATOR
SIDE
(
all -45, -070 and -090 units)
1 1/2" (38mm) accelerator
provided on 71M80 & 44W92
kits for -045 and -070 models
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 DIFFERENT VENT
PIPE SIZE TO TERMINATION
1-1/2" (38mm) accelerator
provided on 71M80 & 44W92
kits for -045 and -070 models
INTAKE
AIR
EXHAUST
VENT
12" (305mm) Min.
INTAKE
AIR
above grade or
average snow
accumulation.
GRADE
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 every 24" (610
mm) as shown in Figure 38.
When exhaust and intake piping must be run up an
outside wall, the exhaust piping must be terminated
with pipe sized per Table 9. The intake piping may be
equipped with a 90° elbow turndown. Using turndown
will add 5 feet (1.5 m) 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 Figure 36.
EXHAUST
VENT
INTAKE
AIR
Inches (mm)
optional intake elbow
Figure 36. Optional Vent Termination for Multiple Unit
Installation of Direct Vent Wall Termination Kit
8" - 12"
(203mm - 305mm)
Minimum 12" (305mm)
INSULATION (optional)
above chimney top
plate or average snow
accumulation
* SIZE TERMINATION
PIPE PER EXHAUST
PIPE TERMINATION
SIZE REDUCTION
TABLE
NOTE: Do not discharge exhaust gases directly into any chimney
or vent stack. If vertical 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 terminates as
illustrated. In any exterior portion of chimney, the exhaust vent
must be insulated.
Figure 37. Direct Vent Application Using Existing
Issue 2332
(305mm)
5-1/2"
5"
(140mm)
(127mm)
18" MAX.
Front View
(457mm)
EXHAUST VENT
12" (305mm) Min.
above grade or
INTAKE
cumulation.
AIR
Side View
STRAIGHT-CUT OR
ANGLE-CUT IN DIRECTION
OF ROOF SLOPE *
3" - 8"
EXHAUST VENT
(76mm -
203mm)
WEATHERPROOF
SHOULDER OF FITTINGS
INTAKE PIPE
PROVIDE SUPPORT
OF PIPE ON TOP PLATE
SHEET
METAL TOP
PLATE
3" - 8"
(76mm -
203mm)
INSULATE
TO FORM
SEAL
Chimney
12"
1/2" (13mm)
INSULATION
ALTERNATE
INTAKE PIPE
EXTERIOR
PORTION OF
CHIMNEY
Page 27 of 53
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