Table of Contents
Advertisement
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 39.
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 39. When exhaust and intake
piping must be run up an outside wall, the exhaust
piping must be terminated with pipe sized per Table 8.
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.
A multiple furnace installation may use a group of up to
four terminations assembled together horizontally, as
shown in Figure 41.
Figure 40.
Figure 41.
507768-05G / 31-5000655
DIRECT VENT CONCENTRIC ROOFTOP TERMINATION
12" (305mm)
Minimum
Above Average
Snow
Accumulation
CLAMP
DIRECT VENT CONCENTRIC WALL TERMINATION
FIELD-PROVIDED REDUCER
MAY BE REQUIRED TO
ADAPT DIFFERENT VENT
PIPE SIZE TO TERMINATION
EXHAUST
AIR
INTAKE
AIR
8" - 12"
(203mm - 305mm)
Minimum 12" (305mm)
above chimney top
plate or average snow
accumulation
* SIZE TERMINATION
PIPE PER EXHAUST
PIPE TERMINATION
SIZE REDUCTION
TABLE
Figure 44. Direct Vent Application Using Existing
Issue 2223
71M80, 69M29 or 60L46 (US)
44W92 or 44W93 (Canada)
FLASHING
INTAKE
(Not Furnished)
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
Figure 42.
71M80, 69M29 or 60L46 (US)
44W92 or 44W93 (Canada)
OUTSIDE
INTAKE
WALL
AIR
12" (305mm) Min.
INTAKE
CLAMP
(Not Furnished)
AIR
Figure 43.
ANGLE-CUT IN DIRECTION
3" - 8"
(76mm -
203mm)
SHOULDER OF FITTINGS
INTAKE PIPE
PROVIDE SUPPORT
INSULATION (optional)
OF PIPE ON TOP PLATE
SHEET
METAL TOP
PLATE
3" - 8"
(76mm -
203mm)
INSULATE
TO FORM
SEAL
Chimney
EXHAUST
AIR
above grade or
cumulation.
GRADE
STRAIGHT-CUT OR
OF ROOF SLOPE *
EXHAUST VENT
1/2" (13mm)
WEATHERPROOF
INSULATION
ALTERNATE
INTAKE PIPE
EXTERIOR
PORTION OF
CHIMNEY
Page 31 of 56
Advertisement
Table of Contents
