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Figure 33. Flush Mount Side Wall Termination
6.
On field supplied terminations, a minimum distance
between the end of the exhaust pipe and the end of
the intake pipe without a termination elbow is 8" and a
minimum distance of 6" with a termination elbow. See
Figure 38.
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
12" (305mm)
Minimum
Above Average
Snow
Accumulation
CLAMP
Figure 34. Direct Vent Concentric Rooftop
Termination
71M80, 69M29 or 60L46 (US)
41W92 or 41W93 (Canada)
Page 26 of 52
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
FIELD-PROVIDED
REDUCER MAY BE REQUIRED
TO ADAPT DIFFERENT VENT
PIPE SIZE TO TERMINATION
EXHAUST
VENT
INTAKE
AIR
(Not Furnished)
Figure 35. Direct Vent Concentric Wall Termination
71M80, 69M29 OR 60L46 (US)
41W92 or 41W93 (Canada)
Figure 36. Optional Vent Termination for Multiple Unit
Installation of Direct Vent Wall Termination Kit
(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 37. 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
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
508391-01
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