Use and Care Manual

507277-03C Page 25 of 53mrcool.com
Figure 32. Exiting Exhaust and Intake Vent
Exhaust
Pipe
Furnace
Inlet Air
Minimum 12 in.
(305MM) above
grade or snow
accumulation
Roof T
erminated
Exhaust Pipe
Furnace
Inlet Air
Minimum 12 in.
(305MM) above
grade or snow
accumulation
Figure 33. Exiting Exhaust and Intake Vent
3” - 8”
(76MM-
203MM)
STRAIGHT-CUT OR
ANGLE-CUT IN DIRECTION
OF ROOF SLOPE
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
Minimum 12” (305MM)
above chimney top
plate or average snow
accumulation
8” - 12”
(203MM - 305MM)
3”-8”
(76MM-203MM)
* SIZE TERMINATION PIPE
PER EXHAUST PIPE TERMINATION
SIZE REDUCTION TABLE
NOTE
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 BEREQUIRED
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
average snow
accumulation.
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 BEREQUIRED
TO ADAPT LARGER VENT
PIPE SIZE TO TERMINATION
1 1/2" (38mm) accelerator
provided on 71M80 & 44W92
12” (305mm)
INTAKE
AIR
EXHAUST
VENT