Lennox Merit ML193UH User Manual

Page 29
FIGURE 40
DIRECT VENT CONCENTRIC ROOFTOP TERMINATION
71M80, 69M29 or 60L46 (US)
44W92 or 44W93 (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
1 1/2" (38mm) accelerator
provided on 71M80 & 44W92
kits for ML193UH045P24B,
070P24B & 070P36B
12” (305mm)
INTAKE
AIR
EXHAUST
VENT
12" (305mm) Min.
above grade or
average snow
accumulation.
FIGURE 41
DIRECT VENT CONCENTRIC WALL TERMINATION
71M80, 69M29 or 60L46 (US)
44W92 or 44W93 (Canada)
INTAKE
AIR
INTAKE
AIR
INTAKE
AIR
OUTSIDE
WALL
GRADE
CLAMP
(Not Furnished)
FIELD−PROVIDED
REDUCER MAY BE REQUIRED
TO ADAPT LARGER VENT
PIPE SIZE TO TERMINATION
EXHAUST
VENT
1−1/2" (38mm) accelerator
provided on 71M80 & 44W92
kits for ML193UH045P24B,
070P24B & 070P36B
EXHAUST
VENT
FIGURE 42
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
accumulation.
optional intake elbow
FIGURE 43
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 44
EXHAUST VENT
INTAKE
AIR
Front View
SIZE
TERMINATION
PIPE PER
TABLE 8.
Top View
1/2" (13MM) Foam Insulation
in Unconditioned Space
EXHAUST VENT
INTAKE AIR
OUTSIDE WALL
DIRECT VENT WALL TERMINATION KIT
(22G44 or 44J40)
8" (206MM) MIN.
FIELD−
PROVIDED
REDUCER MAY
BE REQUIRED
TO ADAPT
LARGER VENT
PIPE SIZE TO
TERMINATION
FIGURE 45
2" EXTENSION FOR 2" PVC
PIPE1" EXTENSION FOR 3"
PVC PIPE
1−1/2" ACCELERATOR
(all −45, −070 and −090 units)
FURNACE
EXHAUST
PIPE
FURNACE
INTAKE
PIPE
4’’
GLUE EXHAUST
END FLUSH INTO
TERMINATION
FLAT
SIDE
FLUSH−MOUNT SIDE WALL TERMINATION
51W11

Lennox Merit ML193UH Specifications

General

Efficiency	Up to 93% AFUE
Heating Stages	Single-stage
Blower Motor	PSC
Gas Valve	Single-stage
Energy Star Certified	No
Fuel Type	Natural Gas or Propane
Cabinet Type	Upflow/Horizontal
Ignition Type	Hot Surface Ignition
Heat Exchanger	Aluminized Steel
Heating Capacity	44, 000-132, 000 BTU/h