Lennox International Inc. MERIT SERIES GAS FURNACE DOWNFLOW AIR DISCHARGE Electric Heater User Manual


 
Page 24
FIGURE 30
DIRECT VENT CONCENTRIC ROOFTOP TERMINATION
71M80, 69M29 or 60L46 (US)
41W92 or 41W93 (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 BE REQUIRED
TO ADAPT LARGER VENT
PIPE SIZE TO TERMINATION
INTAKE
1−1/2" (38mm) accelerator
provided on 71M80 & 44W92
kits for ML193DF045P36B− &
070P36B
12” (305mm)
12" (305mm) Min.
above grade or
average snow ac-
cumulation.
FIGURE 31
DIRECT VENT CONCENTRIC WALL TERMINATION
71M80, 69M29 or 60L46 (US)
41W92 or 41W93 (Canada)
INTAKE
AIR
EXHAUST
AIR
INTAKE
AIR
INTAKE
AIR
EXHAUST
AIR
OUTSIDE
WALL
GRADE
CLAMP
(Not Furnished)
FIELD−PROVIDED
REDUCER MAY BE
REQUIRED TO ADAPT
LARGER VENT PIPE
SIZE TO TERMINATION
1−1/2" (38mm) accelerator
provided on 71M80 &
44W92 kits for
ML193DF045P36B− &
070P36B
FIGURE 32
EXHAUST
VENT
INTAKE
AIR
5−1/2"
(140mm)
Front View
12"
(305mm)
5"
(127mm)
18" MAX.
(457mm)
EXHAUST VENT
INTAKE
AIR
OPTIONAL VENT TERMINATION FOR MULTIPLE UNIT
INSTALLATION OF DIRECT VENT WALL TERMINATION KIT
(22G44, 44J40, 30G28 or 81J20)
Inches (mm)
Side View
12" (305mm) Min.
above grade or
average snow ac-
cumulation.
optional intake elbow
FIGURE 33
1/2" (13mm) Foam Insulation
in Unconditioned Space
EXHAUST VENT
INTAKE AIR
OUTSIDE WALL
EXHAUST VENT
INTAKE
AIR
Front View
Top View
DIRECT VENT WALL TERMINATION KIT
(30G28 or 81J20)
6 (152mm) MIN.
SIZE
TERMINATION
PIPE PER
TABLE 8.
FIELD−PROVIDED
REDUCER MAY
BE REQUIRED TO
ADAPT LARGER
VENT PIPE SIZE
TO TERMINATION
FIGURE 34
1/2" (13mm) Foam Insulation
in Unconditioned Space
EXHAUST VENT
INTAKE AIR
OUTSIDE WALL
EXHAUST VENT
INTAKE
AIR
Front View
Top View
DIRECT VENT WALL TERMINATION KIT
(22G44 or 44J40)
8" (206mm) MIN.
SIZE
TERMINATION
PIPE PER
TABLE 8.
FIELD−PROVIDED
REDUCER MAY
BE REQUIRED TO
ADAPT LARGER
VENT PIPE SIZE
TO TERMINATION