Lennox EL296UHE Installation Instructions Manual page 28

7 - If intake and exhaust piping must be run up a side wall
to position above snow accumulation or other ob­
structions, piping must be supported. At least one
bracket must be used within 6" from the top of the el­
bow and then every 24" (610mm) as shown in figure
41, 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 8.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 39.
2" EXTENSION FOR 2" PVC
PIPE1" EXTENSION FOR 3"
PVC PIPE
4''
FURNACE
INTAKE
PIPE
FLAT
SIDE
FLUSH-MOUNT SIDE WALL TERMINATION
51W11 (US) or 51W12 (Canada)
FIGURE 36
EXHAUST
VENT
12" (305mm)
Minimum
Above Average
Snow
Accumulation
CLAMP
DIRECT VENT CONCENTRIC ROOFTOP TERMINATION
71M80, 69M29 or 60L46 (US)
44W92 or 44W93 (Canada)
FIGURE 37
FURNACE
EXHAUST
PIPE
GLUE EXHAUST
END FLUSH INTO
TERMINATION
1-1/2" ACCELERATOR
(
all -45, -070 and -090 units)
1 1/2" (38mm) accelerator
provided on 71M80 & 44W92
kits for EL296UH045E36B, &
070E36B
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 LARGER VENT
PIPE SIZE TO TERMINATION
FIELD-PROVIDED
REDUCER MAY BE REQUIRED
TO ADAPT LARGER VENT
PIPE SIZE TO TERMINATION
EXHAUST
VENT
INTAKE
AIR
(Not Furnished)
DIRECT VENT CONCENTRIC WALL TERMINATION
71M80, 69M29 or 60L46 (US)
44W92 or 44W93 (Canada)
EXHAUST
VENT
INTAKE
AIR
Inches (MM)
optional intake elbow
OPTIONAL VENT TERMINATION FOR MULTIPLE UNIT
INSTALLATION OF DIRECT VENT WALL TERMINATION KIT
EL296UHE DIRECT VENT APPLICATION
USING EXISTING CHIMNEY
*SIZE TERMINATION
PIPE PER TABLE 8.
8" - 12"
(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 re­
quired, 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 ex­
haust vent must be insulated.
Page 28
1-1/2" (38mm) accelerator
provided on 71M80 & 44W92
kits for EL296UH045E36B, &
070E36B
OUTSIDE
INTAKE
WALL
AIR
INTAKE
12" (305mm) Min.
CLAMP
AIR
above grade or
average snow
accumulation.
GRADE
FIGURE 38
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
(30G28 or 81J20)
FIGURE 39
STRAIGHT-CUT OR
ANGLE-CUT IN DIRECTION
3"-8"
OF ROOF SLOPE *
(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
FIGURE 40
EXHAUST
VENT
ALTERNATE
INTAKE PIPE
EXTERIOR
PORTION OF
CHIMNEY