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Figure 37. Exiting Exhaust and Intake Vent
(no common pressure zone)
EXHAUST
VENT
12" (305mm)
Minimum
Above Average
Snow
Accumulation
CLAMP
Figure 38. Direct Vent Concentric Rooftop
Termination
71M80, 69M29 or 60L46 (US)
41W92 or 41W93 (Canada)
2" EXTENSION FOR 2" PVC
PIPE1" EXTENSION FOR 3"
PVC PIPE
FURNACE
INTAKE
PIPE
Figure 39. Flush-Mount Side Wall Termination
508390-01
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
FURNACE
EXHAUST
4''
PIPE
GLUE EXHAUST
END FLUSH INTO
TERMINATION
FLAT
1-1/2" ACCELERATOR
SIDE
(
all -45, -070 and -090 units)
51W11
FIELD-PROVIDED
REDUCER MAY BE REQUIRED
TO ADAPT DIFFERENT VENT
PIPE SIZE TO TERMINATION
EXHAUST
VENT
INTAKE
AIR
Figure 40. Direct Vent Concentric Wall Termination
71M80, 69M29 OR 60L46 (US)
41W92 or 41W93 (Canada)
EXHAUST
VENT
INTAKE
AIR
Inches (MM)
optional intake elbow
Figure 41. Optional Vent Termination for Multiple
Unit Installation of Direct Vent Wall Termination
(203MM - 305MM)
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 terminates as
illustrated. In any exterior portion of chimney, the exhaust vent
must be insulated.
Figure 42. Direct Vent Application Using Existing
Issue 2327
1-1/2" (38mm) accelerator
provided on 71M80 & 44W92
kits for -045 and -070 models
OUTSIDE
INTAKE
WALL
AIR
INTAKE
CLAMP
AIR
(Not Furnished)
12"
(305MM)
5-1/2"
5"
(140mm)
(127MM)
18" MAX.
Front View
(457MM)
EXHAUST VENT
12" (305MM) Min.
above grade or
average snow
INTAKE
accumulation.
AIR
Side View
ANGLE-CUT IN DIRECTION
3"-8"
(76MM-203MM)
8" - 12"
SHOULDER OF FITTINGS
INTAKE PIPE
INSULATION (optional)
OF PIPE ON TOP PLATE
SHEET
METAL TOP
PLATE
INSULATE
TO FORM
SEAL
Chimney
EXHAUST
VENT
12" (305mm) Min.
above grade or
average snow
accumulation.
GRADE
STRAIGHT-CUT OR
OF ROOF SLOPE *
PROVIDE SUPPORT
ALTERNATE
INTAKE PIPE
3" - 8"
(76MM-
203MM)
EXTERIOR
PORTION OF
CHIMNEY
Page 29 of 60
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