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Exhaust
Pipe
Figure 32. Exiting Exhaust and Intake Vent
(no common pressure zone)
Roof T erminated
Exhaust Pipe
Figure 33. Exiting Exhaust and Intake Vent
(no common pressure zone)
8" - 12"
(203mm - 305mm)
INTAKE PIPE
Minimum 12" (305mm)
INSULATION (optional)
above chimney top
plate or average snow
SHEET
METAL TOP
accumulation
PLATE
* SIZE TERMINATION
PIPE PER EXHAUST
INSULATE
PIPE TERMINATION
TO FORM
SIZE REDUCTION
SEAL
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 terminate as illustrated.
In any exterior portion of chimney, the exhaust vent must be
insulated.
Figure 34. Direct Vent Application Using Existing
Page 28 of 55
Inlet Air
Minimum 12 in.
Furnace
(305MM) above
grade or snow
accumulation
Inlet Air
Minimum 12 in.
Furnace
(305MM) above
grade or snow
accumulation
STRAIGHT-CUT OR
ANGLE-CUT IN DIRECTION
OF ROOF SLOPE *
3" - 8"
EXHAUST VENT
(76mm -
1/2" (13mm)
203mm)
WEATHERPROOF
INSULATION
SHOULDER OF FITTINGS
PROVIDE SUPPORT
OF PIPE ON TOP PLATE
ALTERNATE
INTAKE PIPE
3" - 8"
(76mm -
203mm)
EXTERIOR
PORTION OF
CHIMNEY
Chimney
FIELD−PROVIDED
REDUCER MAY BE REQUIRED
TO ADAPT LARGER VENT
PIPE SIZE TO TERMINATION
EXHAUST
VENT
INTAKE
AIR
Figure 35. Direct Vent Concentric Wall Termination
EXHAUST
VENT
INTAKE
AIR
Inches (mm)
optional intake elbow
Figure 36. Optional Vent Termination for Multiple Unit
Installation of Direct Vent Wall Termination Kit
EXHAUST
VENT
12" (305mm)
Minimum
Above Average
Snow
Accumulation
CLAMP
Figure 37. Direct Vent Concentric Rooftop
Issue 2223
71M80, 69M29 or 60L46 (US)
44W92 or 44W93 (Canada)
1−1/2" (38mm) accelerator
provided on 71M80 & 44W92
OUTSIDE
INTAKE
WALL
AIR
INTAKE
CLAMP
AIR
(Not Furnished)
5-1/2"
5"
(140mm)
(127mm)
18" MAX.
(457mm)
EXHAUST VENT
12" (305mm) Min.
above grade or
INTAKE
AIR
Side View
71M80, 69M29 or 60L46 (US)
44W92 or 44W93 (Canada)
1 1/2" (38mm) accelerator
provided on 71M80 & 44W92
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
Termination
507769-05G / 31-5000656
EXHAUST
VENT
12" (305mm) Min.
above grade or
average snow
accumulation.
GRADE
12"
(305mm)
Front View
cumulation.
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