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