Haier GE APPLIANCES NF96US Service Manual page 36

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 44.
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. At least one
bracket must be used within 6" from the top of the
elbow and then every 24" (610mm) as shown in Figure
44, to prevent any movement in any direction. When
exhaust and intake piping must be run up an outside
wall, the exhaust piping must be terminated with pipe
sized per Table 12.The intake piping may be equipped
with a 90° elbow turndown. Using turndown will add 5
feet (1.5m) 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 37.
2" Extension for
2" PVC Pipe
1" Extension for
3" PVC Pipe
Furnace
Intake
Pipe
Figure 36. Flush-Mount Side Wall Termination 51W11
Exhaust Vent
5"
(127mm)
Intake
Air
18" MAX.
(457mm)
Optional intake elbow
Figure 37. Optional Vent Termination for Multiple Unit
Installation of Direct Vent Wall Termination
4''
Furnace
Exhaust
Glue exhaust
end flush into
Termination
Flat
1-1/2" Accelerator
Side
(all -45, -070 and
-090 units)
12"
(305mm)
5-1/2"
(140mm)
Front View
Exhaust Vent
12" (305mm) min.
above grade or
average snow
Intake
accumulation
Air
Side View
12" (305mm)
Minimum
Above Average
Snow
Accumulation
CLAMP
Figure 38. Direct Vent Concentric Wall Termination
FIELD-PROVIDED
REDUCER MAY BE REQUIRED
TO ADAPT DIFFERENT VENT
PIPE SIZE TO TERMINATION
EXHAUST
VENT
INTAKE
Pipe
AIR
Figure 39. Direct Vent Concentric Wall Termination
Minimum 12" (305mm)
above chimney top
plate or average snow
accumulation
* SIZE TERMINATION
PIPE PER EXHAUST
PIPE TERMINATION
SIZE REDUCTION
TABLE
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 40. Direct Vent Application Using Existing
Page 36
1 1/2" (38mm) accelerator
provided on 71M80 & 44W92
EXHAUST
kits for -045 and -070 models
VENT
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
71M80, 69M29 or 60L46 (US)
44W92 or 44W93 (Canada)
1-1/2" (38mm) accelerator
provided on 71M80 & 44W92
kits for -045 and -070 models
OUTSIDE
INTAKE
WALL
INTAKE
CLAMP
AIR
(Not Furnished)
71M80, 69M29 or 60L46 (US)
44W92 or 44W93 (Canada)
3" - 8"
(76mm -
8" - 12"
203mm)
(203mm - 305mm)
INTAKE PIPE
INSULATION (optional)
SHEET
METAL TOP
PLATE
INSULATE
TO FORM
SEAL
Chimney
FLASHING
AIR
EXHAUST
VENT
12" (305mm) Min.
above grade or
average snow
accumulation.
GRADE
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
3" - 8"
(76mm -
203mm)
EXTERIOR
PORTION OF
CHIMNEY
31-5000728 Rev. 0