Lennox ML193UH User manual

GAS FURNACES
ML193UH
MERIT® SERIES
Upow / Horizontal
Bulletin No. 210588
October 2010
Supersedes September 2010
ENGINEERING DATA
AFUE - 93%
Input - 44,000 to 132,000 Btuh
Nominal Add-on Cooling - 2 to 5 Tons
ML 1 93 UH 070 P 36 B
Unit Type
ML = Merit® Series
Stages
1 = One-Stage
Nominal Gas Heat Input
045 = 44,000 Btuh
070 = 66,000 Btuh
090 = 88,000 Btuh
110 = 110,000 Btuh
135 = 132,000 Btuh
Blower
P = PSC Multi-Speed Blower Motor
Nominal Add-On Cooling Capacity
24 = 2 tons
36 = 3 tons
48 = 4 tons
60 = 5 tons
Conguration
UH = Upow/Horizontal
MODEL NUMBER IDENTIFICATION
1 Indoor coils with the same letter designation will physically match the furnace.
1 Cabinet Width
B = 17-1/2 in.
C = 21 in.
D = 24-1/2 in.
AFUE
93 = 93%

ML193UH / Page 2
WARRANTY
Duralok Plus™ Aluminized Steel Heat Exchanger -
Limited twenty warranty in residential applications, ten
years in non-residential applications.
All other covered components - Limited ve year
warranty in residential applications, one year in non-
residential applications.
Refer to Lennox Equipment Limited Warranty certicate
included with equipment for details.
APPROVALS
Units are Certied by AHRI.
Units tested and rated according to US DOE test
procedures and FTC labeling regulations.
ISO 9001 Registered Manufacturing Quality System.
Blower data from unit tests conducted in Lennox
Laboratory air test chamber.
APPLICATIONS
Input capacities of 44,000, 66,000, 88,000, 110,000 and
132,000 Btuh.
Energy efciency (AFUE) of 93%.
Compact cabinet for upow, horizontal-left or horizontal-
right applications without any modications.
Utility room, alcove, closet, crawl space, basement or
attic installation.
Lennox add-on indoor coils, high-efciency air cleaners
and humidiers can easily be added to furnace.
Shipped factory assembled with all controls installed
and wired.
Ready for installation in upow, horizontal right-hand or
horizontal left-hand position without any modications.
Removable bottom seal panel shipped in place for side
return air is easily removed for bottom/end return air
applications.
A
Each unit factory test operated to ensure proper
operation.
HEATING SYSTEM
Lennox Duralok Plus™ Heat Exchanger Assembly
Lennox developed heat exchanger assembly consists
of primary heat exchanger
and secondary condenser
coil assembly.
Main multi-pass crimped
seam design clamshell
type heat exchanger.
Constructed of heavy-
gauge, aluminized steel.
Designed for normal
expansion and contraction
with maximum efciency and minimum resistance to air
ow.
Secondary heat exchanger condenser coil constructed
of aluminum ns tted to stainless steel tubes.
Coil is factory tested for leaks.
Condensate drain header box assembly located on front
of coil.
Compact size of complete heat exchanger assembly
permits low overall design of furnace cabinet.
Heat exchanger assembly has been laboratory life cycle
tested in excess of industry standards..
B
C
FEATURES
Contents
Blower Data . . . . . . . . . . . . . . . . . . . . . . 17
Dimensions - Furnace/Coil Combined Dimensions . . 13
Dimensions - Horizontal Position . . . . . . . . . . . 11
Dimensions - Upow Position. . . . . . . . . . . . . 10
Features. . . . . . . . . . . . . . . . . . . . . . . . 2
Gas Heat Accessories . . . . . . . . . . . . . . . . 8
Installation Clearances . . . . . . . . . . . . . . . . 7
Model Number Identication . . . . . . . . . . . . . 1
Optional Accessories . . . . . . . . . . . . . . . . . 8
Optional Accessory Dimensions . . . . . . . . . . . 12
Specications . . . . . . . . . . . . . . . . . . . . . 6
Termination Kits Usage . . . . . . . . . . . . . . . . 9
Vent Lengths . . . . . . . . . . . . . . . . . . . . . 9
B
C
D
E
F
G
H
I
J
K
L

ML193UH / Page 3
HEATING SYSTEM (CONTINUED)
Lennox Designed Header Box
Header box on end of condenser coil collects ue
condensate for disposal through condensate drains.
The drains are located on each side of the cabinet for
easy eld installation of condensate drain trap.
Only one drain is used, the other drain is sealed.
Condensate drain trap is included with the unit for eld
installation.
Lennox Designed Flue Condensate Trap Assembly
Condensate trap assembly is mounted outside the
conditioned air stream.
Assembly can be mounted on either side of cabinet
in upow applications. Assembly is mounted below
the cabinet in horizontal applications. See Dimension
Drawing and Installation Instructions. Can also be
mounted remotely (up to 5 ft. away) from unit.
Drain connection can be made with eld provided PVC
pipe or PVC coupling.
Drain cap on trap allows easy cleaning and winterizing.
Inshot Burners
Aluminized steel inshot burners provide efcient,
trouble-free operation.
Burner venturi mixes air and gas in correct proportion
for proper combustion.
Burner assembly is removable from the unit as a single
component for ease of service.
Hot Surface Nitride Ignitor
Unique, non-porous, high strength proprietary
ceramic material provides long life and trouble-free
maintenance.
Low mass element provides fast heat−up and consistent
igniter temperature with low power usage.
Cemented to alumina block for positive mounting and
protection against current leakage.
High temperature Teon® insulated ignition lead wires
for dependable operation.
Gas Control Valve
24 volt redundant combination gas control valve
combines manual shut off switch (On-Off), automatic
electric valve (dual) and gas pressure regulation into a
compact combination control.
Combustion Air Inducer
Shaded pole heavy duty blower prepurges heat
exchanger and safely vents ue products.
Operates only during heating cycle.
Pressure Switch
Proves Combustion Air Inducer operation before
allowing gas valve to open.
D
E
F
G
Flame Rollout Switches (2)
Manual reset switches are factory installed on burner box.
Switch provides protection from abnormal operating
conditions.
Limit Control
Automatic reset, primary limit is accurately located on
vestibule panel on all units.
OPTIONS
High Altitude Orice Kit − natural gas models only
Required on all natural gas units for proper unit
operation at altitudes from 7,501 to 10,000 ft.
High Altitude Pressure Switch Kit
Required for proper unit operation on installations above
4500 ft.
Natural Gas to LPG/Propane Conversion Kit
Required for eld changeover from natural gas to LPG/
Propane.
LPG/Propane to Natural Gas Conversion Kit
Required for eld changeover from LPG/Propane to
natural gas.
DIRECT VENT / NON-DIRECT VENT
Furnace can be installed in either Direct Vent or Non-
Direct applications.
In Direct Vent applications, combustion air is supplied
from outdoors and ue gases are discharged outdoors.
In Non-Direct Vent applications, combustion air is
supplied from indoors and ue gases are discharged
outdoors.
OPTIONS
Termination Kits
Facilitates installation of combustion air intake pipe and
ue exhaust pipe.
Refer to venting table in this bulletin to determine pipe
size needed and proper termination kit required.
See Optional Accessories table and dimension
drawings.
Termination Kit - Concentric - Direct Vent
Applications
2 or 3 inch kit contains concentric termination
assembly, reducer bushing and 45° elbow.
2 inch kit for -045-070 models contains an outdoor
exhaust accelerator.
Kit requires single hole penetration of roof or wall for
installation.
Roof Termination Flashing Kit is available for use with
2 inch Kits.
CSA certied.
Termination Kit - Flush-Mount
Kit contains ush-mount termination, accelerator,
mounting template and hardware.
Kit may be used with 2, 2-1/2 or 3 in. pipe.
H
FEATURES

ML193UH / Page 4
DIRECT VENT (CONTINUED)
Termination Kits - Wall Assembly
Close Couple (US Only) - Direct Vent Applications
2 or 3 inch kit consists of close-couple, side-by-side
PVC piping with galvanized steel wall cover plate for
sealing and isolating piping penetration of the wall.
Piping spacing and length is sized for proper wall
installations.
CSA certied.
Close Couple WTK (Canada Only) - Direct Vent
Applications
2 or 3 inch kit contains one insulated faceplate, one
insulated exhaust pipe, elbow and ttings.
Wall Ring - Direct Vent or Non-Direct Vent
Applications
2 inch kit contains 2 stainless steel outside seal caps,
2 galvanized steel inside seal caps, 4 seal rings for
the caps and 18 inch insulation sleeve for sealing and
isolating intake and exhaust piping penetration of wall.
Maintain a maximum of 6 inches between the inlet and
outlet openings in the installation of the pipes.
Roof Termination Flashing Kit
2 or 3 inch kit contains two neoprene rubber roof
ashings for vertical venting through a roof.
Vent pipe and insulation not furnished.
Also available for use with 2 inch (use 3 inch ashing)
Concentric Vent Termination Kits used in vertical
venting rooftop applications.
CONTROLS
Integrated Furnace Control Board
Board contains all necessary controls and relays to
operate furnace.
Combustion air inducer is controlled by board. Prior to
ignition, a pre-purge cycle for 15 seconds is initiated.
After the main burners are turned off, a post-purge cycle
for 5 seconds is run.
Ignition control board continuously monitors line voltage
and maintains the igniter power at a constant level to
provide consistent lighting and maximum igniter life.
Electronic ame sensor assures safe and reliable
operation.
Should loss of ame occur, ame sensor controls will
initiate 4 re-attempts at ignition before locking out unit
operation for 60 minutes.
Watchguard type circuit automatically resets ignition
controls after one hour of continuous thermostat demand
after unit lockout, eliminating nuisance calls for service.
Fan control consists of adjustable blower timed-off delay
(60, 90, 120, 180 seconds - factory setting 90 seconds)
and xed blower timed-on delay (30 seconds).
For air-conditioning applications, blower is automatically
energized on thermostat demand for cooling.
I
FEATURES
Two accessory terminals furnished for additional power
supply requirements for 120 volt (less than 1 amp)
power humidiers and powered air cleaners.
Ignition control has two LED’s to indicate status and as
an aid in troubleshooting.
24 Volt Transformer
Furnished and factory installed in control box. 40VA
transformer has fuse wired in series.
Field Wiring Make-up Box
Furnished for line voltage wiring.
Factory installed internally on left side of furnace.
Box may be installed internally or externally on either
side of furnace.
OPTIONS
Furnace Twinning Kit
Required to operate two furnaces simultaneously.
Kit consists of twinning control and two fan sensors.
Thermostat
Thermostat (programmable/non-programmable) is not
furnished with unit.
See Thermostat bulletins in Controls Section and
Lennox Price Book for selection.
Night Service Kit
Contains most commonly used service parts:
• Control board
• Igniter
• Flame sensor
• Gas valve
• Transformer
• Service Manual
BLOWER
Multi-speed direct drive blower.
Statically and dynamically balanced.
Resiliently mounted.
Blower assembly easily removed for servicing.
Blower speeds are easily changed on the integrated
furnace control board. See blower performance tables.
J

ML193UH / Page 5
FEATURES
CABINET
Low-prole, narrow width cabinet allows easy
installation in upow or horizontal applications.
Heavy-gauge, cold rolled steel construction.
Pre-painted cabinet nish.
Flanges provided on supply air opening for ease of
plenum connection or alignment with indoor coil.
Insulated cabinet with foil faced insulation on sides and
back of heating compartment.
Sealed blower compartment.
Complete service access.
Safety interlock switch automatically shuts off power to
unit when blower compartment access door is removed.
Gas piping and electrical inlets are provided in both
sides of cabinet.
Return Air Entry:
For bottom/end return-air entry for upow/horizontal
applications, remove furnished bottom seal panel from
cabinet.
For side return-air entry (upow applications only),
corners are marked on either side of cabinet for return
air cut-outs.
See dimension drawings.
NOTE - 60C and 60D size units that require air
volumes over 1800 cfm must have one of the
following:
1. Single side return air with transition, to accommodate
20 x 25 x 1 in. cleanable air lter. Required to
maintain proper air velocity.
2. Single side return air with Optional Return Air Base
3. Bottom return air.
4. Return air from both sides.
5. Bottom and one side return air.
See Blower Performance Tables for additional
information.
Coil Match-up
All furnaces exactly match C33 and CX34 cased upow
indoor coils and CH33 horizontal indoor coils with
same letter designation in model number. No adaptor
required. Engaging holes furnished on cabinet for
alignment.
C33 uncased coils match furnaces without any
overhang but require an optional adaptor base or eld
fabricated transition to match furnace opening. See C33
coil bulletin for additional information.
OPTIONS
Condensate Drain Heat Cable Kits
Self-limiting wattage heat cable prevents condensate
drain from freezing in unconditioned areas.
Available in 6, 24 or 50 ft. lengths.
K
L
Heat Cable Tape:
66 ft. length, 1/2 in. wide berglass.
60 ft. length, 2 in. wide aluminum foil.
Horizontal Suspension Kit
Provides suspension of unit and coil in horizontal
applications.
Allows complete service access.
Consists of corner mounted hanging brackets with
vibration isolators, return air end support rail and
hardware for assembly.
Metal hanging straps must be eld provided.
Crawl Space Vent Drain Kit
Allows venting through a crawl space for upow and
horizontal applications.
Includes 2 or 3 in. sanitary tee, 2 in. PVC assembly,
PVC boot and clamp.
Return Air Base
On furnaces with side return air and condensate trap on
the same side of the cabinet, a eld fabricated transition
or Return Air Base is required when using an IAQ
product higher than 14-3/16 in. installed next to the unit
and serviced from the front.
IAQ products higher than 20 in. require a eld fabricated
transition.
Must be used for 60C and 60D models with air volumes
over 1800 cfm in upow applications when only one
side return is required.
Cabinet is shipped at for easy eld assembly and is
pre-painted steel to match the furnace.
See Dimension Drawing.
FILTER (NOT FURNISHED)
Filter and provisions for external mounting must be eld
provided.
OPTIONS
Air Filter and Rack Kit for Horizontal Return Air
(End) Applications
Washable or vacuum cleanable polyurethane frame
type lter and external end return air rack available for
eld installation.
Rack has lter door for easy lter servicing.
Flanges on rack allow easy duct connection.
See dimension drawing.
Air Filter and Rack Kit for Upow Side Return Air
Applications - Not for use with Return Air Base
Washable or vacuum cleanable polyurethane frame
type lter and external side return air rack available for
eld installation.
Available in single and ten pack kits.
Rack has lter door for easy lter servicing.
Flanges on rack allow easy duct connection.
Field installs on either side of unit cabinet. See
dimension drawing.

ML193UH / Page 6
SPECIFICATIONS
Gas
Heating
Performance
Model No. ML193UH045P24B ML193UH045P36B ML193UH070P24B
1 AFUE 93% 93% 93%
Input - Btuh 44,000 44,000 66,000
Output - Btuh 41,000 42,000 62,000
Temperature rise range - °F 40 - 70 25 - 55 50 - 80
Gas Manifold Pressure (in. w.g.)
Nat. Gas / LPG/Propane
3.5 / 10.0 3.5 / 10.0 3.5 / 10.0
High static - in. w.g. 0.50 0.50 0.50
Connections
in.
Intake / Exhaust Pipe (PVC) 2 / 2 2 / 2 2 / 2
Gas pipe size IPS 1/2 1/2 1/2
Condensate Drain Trap (PVC pipe) - i.d. 1/2 1/2 1/2
with eld supplied (PVC coupling) - o.d. 3/4 3/4 3/4
Indoor
Blower
Wheel nom. dia. x width - in. 10 x 8 10 x 8 10 x 8
Motor output - hp 1/5 1/3 1/5
Tons of add-on cooling 1.5 - 2 2.5 - 3 1.5 - 2
Air Volume Range - cfm 390 - 1140 700 - 1600 390 - 1140
Electrical
Data
Voltage 120 volts - 60 hertz - 1 phase
Blower motor full load amps 3.1 6.1 3.1
Maximum overcurrent protection 15 15 15
Shipping Data lbs. - 1 package 120 122 125
NOTE - Filters and provisions for mounting are not furnished and must be eld provided.
1 Annual Fuel Utilization Efciency based on DOE test procedures and according to FTC labeling regulations. Isolated combustion system rating for non-weatherized
furnaces.
SPECIFICATIONS
Gas
Heating
Performance
Model No. ML193UH070P36B ML193UH090P36C ML193UH090P48C
1 AFUE 93% 93% 93%
Input - Btuh 66,000 88,000 88,000
Output - Btuh 62,000 83,000 83,000
Temperature rise range - °F 40 - 70 50 - 80 40 - 70
Gas Manifold Pressure (in. w.g.)
Nat. Gas / LPG/Propane
3.5 / 10.0 3.5 / 10.0 3.5 / 10.0
High static - in. w.g. 0.50 0.50 0.50
Connections
in.
Intake / Exhaust Pipe (PVC) 2 / 2 2 / 2 2 / 2
Gas pipe size IPS 1/2 1/2 1/2
Condensate Drain Trap (PVC pipe) - i.d. 1/2 1/2 1/2
with eld supplied (PVC coupling) - o.d. 3/4 3/4 3/4
Indoor
Blower
Wheel nom. dia. x width - in. 10 x 8 10 x 8 10 x 10
Motor output - hp 1/3 1/3 1/2
Tons of add-on cooling 2.5 - 3 2 - 3 3 - 4
Air Volume Range - cfm 660 - 1615 695 - 1620 900 - 2025
Electrical
Data
Voltage 120 volts - 60 hertz - 1 phase
Blower motor full load amps 6.1 6.1 8.2
Maximum overcurrent protection 15 15 15
Shipping Data lbs. - 1 package 127 143 146
NOTE - Filters and provisions for mounting are not furnished and must be eld provided.
1 Annual Fuel Utilization Efciency based on DOE test procedures and according to FTC labeling regulations. Isolated combustion system rating for non-weatherized
furnaces.

ML193UH / Page 7
SPECIFICATIONS
Gas
Heating
Performance
Model No. ML193UH110P48C ML193UH110P60C ML193UH135P60D
1 AFUE 93% 93% 93%
Input - Btuh 110,000 110,000 132,000
Output - Btuh 104,000 104,000 124,000
Temperature rise range - °F 50 - 80 40 - 70 45 - 75
Gas Manifold Pressure (in. w.g.)
Nat. Gas / LPG/Propane
3.5 / 10.0 3.5 / 10.0 3.5 / 10.0
High static - in. w.g. 0.50 0.50 0.50
Connections
in.
Intake / Exhaust Pipe (PVC) 2 / 2 2 / 2 2 / 2
Gas pipe size IPS 1/2 1/2 1/2
Condensate Drain Trap (PVC pipe) - i.d. 1/2 1/2 1/2
with eld supplied (PVC coupling) - o.d. 3/4 3/4 3/4
Indoor
Blower
Wheel nom. dia. x width - in. 10 x 10 11 ½ x 10 11 ½ x 10
Motor output - hp 1/2 1 1
Tons of add-on cooling 3 - 4 4 - 5 4 - 5
Air Volume Range - cfm 850 - 2030 1210 - 2525 1340 - 2800
Electrical
Data
Voltage 120 volts - 60 hertz - 1 phase
Blower motor full load amps 8.2 11.5 11.5
Maximum overcurrent protection 15 15 15
Shipping Data lbs. - 1 package 155 161 178
NOTE - Filters and provisions for mounting are not furnished and must be eld provided.
1 Annual Fuel Utilization Efciency based on DOE test procedures and according to FTC labeling regulations. Isolated combustion system rating for non-weatherized
furnaces.
INSTALLATION CLEARANCES - INCHES (MM)
Sides 1 0 inches (0 mm)
Rear 0 inches (0 mm)
Top/Plenum 1 inch (25 mm)
Front 0 inches (0 mm)
Front (service/alcove) 24 inches (610 mm)
Floor 2 Combustible
NOTE − Air for combustion must conform to the methods outlined in the National Fuel Gas Code (NFPA 54/ANSI−Z223.1)
or the National Standard of Canada CAN/CSA−B149.1 Natural Gas and Propane Installation Code”.
NOTE − In the U.S. ue sizing must conform to the methods outlined in the current National Fuel Gas Code (NFPA 54/
ANSI−Z223.1) or applicable provisions of local building codes. In Canada ue sizing must conform to the methods
outlined in National Standard of Canada CAN/CSA−B149.1.
1 Allow proper clearances to accommodate condensate trap and vent pipe installation.
2 Do not install the furnace directly on carpeting, tile, or other combustible materials other than wood ooring.

ML193UH / Page 8
GAS HEAT ACCESSORIES
Input
High Altitude
Pressure Switch Kit
Natural Gas to
LPG/Propane Kit
LPG/Propane
to Natural Gas Kit
Natural Gas
High Altitude
Orice Kit
4501 - 7500 ft. 7501 - 10,000 ft. 0 - 7500 ft. 0 - 7500 ft. 7501- 10,000 ft.
all models 74W90 74W91 69W73 73W81 73W37
OPTIONAL ACCESSORIES - MUST BE ORDERED EXTRA
“B” Width
Models
“C” Width
Models
“D” Width
Models
CABINET ACCESSORIES
Horizontal Suspension Kit - Horizontal only 51W10 51W10 51W10
Return Air Base - Upow only 50W98 50W99 51W00
CONDENSATE DRAIN KITS
Condensate Drain Heat Cable 6 ft. 26K68 26K68 26K68
24 ft. 26K69 26K69 26K69
50 ft. 26K70 26K70 26K70
Heat Cable Tape Fiberglass - 1/2 in. x 66 ft. 36G53 36G53 36G53
Aluminum foil - 2 in. x 60 ft. 16P89 16P89 16P89
Crawl Space Vent Drain Kit 51W18 51W18 51W18
CONTROLS
Twinning Kit 15L38 15L38 15L38
FILTER KITS
1 Air Filter and
Rack Kit
Horizontal (end) Size of lter - in. 87L96 - 18 x 25 x 1 87L97 - 20 x 25 x 1 87L98 - 25 x 25 x 1
Side Return Single 44J22 44J22 44J22
Ten Pack 66K63 66K63 66K63
Size of lter - in. 16 x 25 x 1 16 x 25 x 1 16 x 25 x 1
NIGHT SERVICE KITS
Night Service Kit 51W03 51W03 51W03
TERMINATION KITS
See Installation Instructions for specic venting information.
Termination Kits -
Direct Vent
Applications Only
Concentric US - 2 in. 71M80 69M29 - - -
3 in. - - - 60L46 60L46
Canada - 2 in. 44W92 44W92 - - -
3 in. - - - 44W93 44W93
Flush-Mount 2, 2-1/2 or 3 in. 51W11 51W11 51W11
Wall - Close
Couple
US - 2 in. 22G44 - - - - - -
3 in. 44J40 44J40 44J40
Wall - Close
Couple WTK
Canada - 2 in. 30G28 - - - - - -
3 in. 81J20 81J20 81J20
Termination Kits -
Direct or Non-
Direct vent
Roof 2 in. 15F75 15F75 - - -
Wall Ring Kit 2 in. 15F74 3 15F74 - - -
Roof Termination Flashing Kit - Direct or
Non-Direct Vent (2 ashings)
2 in. 44J41 44J41 44J41
1 Cleanable polyurethane frame type lter.
2 Kits contain enough parts for two, non−direct vent installations.
3 Non-direct vent only.
NOTE - Termination Kits 44W92, 44W93, 30G28, 81J20 are certied to ULC S636 standard for use in Canada only.

ML193UH / Page 9
VENT LENGTHS - FEET
STANDARD TERMINATION AT ELEVATION 0 - 10,000 ft.
Pipe Size 2 in. 2-1/2 in. 3 in.
Input 045 070 090 110 135 045 070 090 110 135 045 070 090 110 135
No. of
90 ELL
1 81 66 44 24 N/A 115 100 68 43 N/A 137 137 118 118 114
2 76 61 39 19 N/A 110 95 63 38 N/A 132 132 113 113 109
3 71 56 34 14 N/A 105 90 58 33 N/A 127 127 108 108 104
4 66 51 29 N/A N/A 100 85 53 28 N/A 122 122 103 103 99
5 61 46 24 N/A N/A 95 80 48 23 N/A 117 117 98 98 94
6 56 41 19 N/A N/A 90 75 43 18 N/A 112 112 93 93 89
7 51 36 14 N/A N/A 85 70 38 13 N/A 107 107 88 88 84
8 46 31 N/A N/A N/A 80 65 33 N/A N/A 102 102 83 83 79
9 41 26 N/A N/A N/A 75 60 28 N/A N/A 97 97 78 78 74
10 36 21 N/A N/A N/A 70 55 23 N/A N/A 92 92 73 73 69
CONCENTRIC TERMINATION ELEVATION 0 - 10,000 ft.
Pipe Size 2 in. 2-1/2 in. 3 in.
Input 045 070 090 110 135 045 070 090 110 135 045 070 090 110 135
No. of
90 ELL
1 73 58 42 22 N/A 105 90 64 39 N/A 121 121 114 114 105
2 68 53 37 17 N/A 100 85 59 34 N/A 116 116 109 109 100
3 63 48 32 12 N/A 95 80 54 29 N/A 111 111 104 104 95
4 58 43 27 N/A N/A 90 75 49 24 N/A 106 106 99 99 90
5 53 38 22 N/A N/A 85 70 44 19 N/A 101 101 94 94 85
6 48 33 17 N/A N/A 80 65 39 14 N/A 96 96 89 89 80
7 43 28 12 N/A N/A 75 60 34 N/A N/A 91 91 84 84 75
8 38 23 N/A N/A N/A 70 55 29 N/A N/A 86 86 79 79 70
9 33 18 N/A N/A N/A 65 50 24 N/A N/A 81 81 74 74 65
10 28 13 N/A N/A N/A 60 45 19 N/A N/A 76 76 69 69 60
TERMINATION KITS USAGE
Input
Size
Vent Pipe
Diameter
in.
Concentric Terminations Standard Terminations
Concentric
Kits
Close Couple
Kits
Wall
Ring
Kit
Flush
Mount
kit
Outdoor Exhaust
Accelerator
(Diameter X Length)
For use with Close
Couple and Wall Ring Kits
2 in. 3 in. 2 in. 3 in. 2 in. 2, 2-1/2
or 3 in. 1-1/2 x 12 in. 2 x 12 in.
3 71M80
3, 4 44W92 69M29 60L46 4 44W93
22G44
4 30G28
44J40
4 81J20 15F74 51W11 Field Provided
045
2 Yes - - - - - - Yes 1 Yes Yes Yes Yes - - -
2-1/2 Yes - - - - - - Yes 1 Yes Yes Yes Yes - - -
3 Yes - - - - - - Yes 1 Yes Yes Yes Yes - - -
070
2 Yes - - - - - - Yes 1 Yes Yes Yes Yes - - -
2-1/2 Yes - - - - - - Yes 1 Yes Yes Yes Yes - - -
3 Yes - - - - - - Yes 1 Yes Yes Yes Yes - - -
090
2 - - - Yes Yes - - - Yes 2 Yes Yes - - - Yes
2-1/2 - - - Yes Yes - - - Yes 2 Yes Yes - - - Yes
3 - - - Yes Yes - - - Yes 2 Yes Yes - - - Yes
110
2 - - - Yes Yes - - - Yes - - - Yes - - - Yes
2-1/2 - - - Yes Yes - - - Yes - - - Yes - - - Yes
3 - - - Yes Yes - - - Yes - - - Yes - - - Yes
135 3 - - - - - - Yes - - - Yes - - - Yes - - - Yes
1 Requires eld provided 1-1/2 in. outdoor exhaust accelerator.
2 Requires eld provided 2 in. outdoor exhaust accelerator.
3 Concentric Kits 71M80 and 44W92 include 1-1/2 in. outdoor exhaust accelerator, required when used with 045, 070 input models. Accelerator is not used with 090, 110,
135 input models.
4 Termination Kits 44W92, 44W93, 30G28, 81J20 are certied to ULC S636 standard for use in Canada only.

ML193UH / Page 10
DIMENSIONS - INCHES (MM) - UPFLOW POSITION
Model No. A B C D
in. mm in. mm in. mm in. mm
ML193UH045P24B
ML193UH045P36B
ML193UH070P24B
ML193UH070P36B
17-1/2 446 16-3/8 416 16 406 7-5/8 194
ML193UH090P36C
ML193UH090P48C
ML193UH110P48C
ML193UH110P60C
21 533 19-7/8 505 19-1/2 495 9-3/8 238
ML193UH135P60D 24-1/2 622 23-3/8 594 23 584 11-1/8 283
6-9/16 (167)
Left
9 (229)
Right
23
(584)
(19)
3/4
(19)
1 Bottom Return
Air Opening
GAS PIPING INLET
(Either Side)
Side Return
Air Opening
(Either Side)
1
Bottom Return
Air Opening
EXHAUST AIR
OUTLET
ELECTRICAL
INLET
(Either Side)
SUPPLY AIR
OPENING
FRONT VIEW SIDE VIEW
TOP VIEW
A
B9/16 (14)
C
3/4
27-3/4
(705)
19-7/16
(494)
23-1/2
(597)
1-1/2
(38)
6-1/2 (165)
(Either Side)
33
(838)
3-3/8
(86)
1-15/16 (49)
14
(356)
9/16
(14)
12-5/8 (321)
(Either Side)
2 OPTIONAL
SIDE RETURN
AIR FILTER KIT
(Either Side)
16
(406)
14-3/4
(375)
2 OPTIONAL
SIDE RETURN
AIR FILTER KIT
(Either Side)
5/8
(16)
1
3-1/4
(83)
23-3/4
(603)
25
(635)
D
1 (25)
Front Panel
COMBUSTION
AIR INTAKE
2 (51)
(Either Side)
2 (51)
CONDENSATE
TRAP CONNECTION
(Either Side)
2
Optional Side Return Air Filter Kit is not for use
with the Optional Return Air Base.
1
NOTE - 60C and 60D size units that require air volumes
over 1800 cfm must have one of the following:
1. Single side return air with transition, to accommodate
20 x 25 x 1 in. cleanable air filter.
Required to maintain proper air velocity.
2. Single side return air with Optional Return Air Base
3. Bottom return air.
4. Return air from both sides.
5. Bottom and one side return air.
See Blower Performance Tables for additional information.
2-7/8
(73)
AIR FLOW
Flue Condensate Trap
Assembly
Furnished for external
field installation
on either side of unit.
(See installation
instructions for
additional information.)
7
(178)
OUT
VENT
CLEAN OUT PVC MATL
IN

ML193UH / Page 11
DIMENSIONS - INCHES (MM) - HORIZONTAL POSITION
Model No. A B C D
in. mm in. mm in. mm in. mm
ML193UH045P24B
ML193UH045P36B
ML193UH070P24B
ML193UH070P36B
17-1/2 446 16-3/8 416 16 406 7-5/8 194
ML193UH090P36C
ML193UH090P48C
ML193UH110P48C
ML193UH110P60C
21 533 19-7/8 505 19-1/2 495 9-3/8 238
ML193UH135P60D 24-1/2 622 23-3/8 594 23 584 11-1/8 283
D
A
TOP VIEW
27-3/4
(705) 33
(838)
27-3/4
(705)
27-3/4
(705)
A
GAS PIPING INLET
(Top or Bottom)
RETURN
AIR
OPENING
ELECTRICAL INLET
(Top or Bottom)
SUPPLY
AIR
OPENING
FRONT VIEW
TOP VIEW
C
A
END VIEW
END VIEW
33
(838)
27-3/4
(705)
19-7/16
(494)
9/16
(14)
B
23-1/2
(591)
3-1/4
(95)
(19)
2 (51)
Top or Bottom
6-1/2 (165)
Bottom
3-3/8 (86)
EXHAUST AIR
OUTLET
LEFT-HAND AIR DISCHARGE
FRONT VIEW
END VIEW END VIEW
AIR
FLOW
ELECTRICAL INLET
(Top or Bottom)
RIGHT-HAND AIR DISCHARGE
9/16
(14)
3/4
AIR
FLOW
AIR
FLOW
19-7/16
(494)
9/16
(14)
B
9/16
(14)
D
A
(86)
3-3/8
SUPPLY
AIR
OPENING
RETURN
AIR
OPENING
C
23-1/2
(591)
3-1/4
(95)
(19)
3/4
AIR
FLOW
COMBUSTION
AIR INTAKE
EXHAUST AIR
OUTLET
COMBUSTION
AIR INTAKE
2 (51)
2 (51)
6-9/16 (167) Top
9 (229) Bottom
12-5/8 (321)
Bottom
CONDENSATE
TRAP CONNECTION
6-9/16 (167) Bottom
9 (229) Top
12-5/8 (321)
Bottom
2 (51)
Top or Bottom
6-1/2 (165)
Bottom
(Bottom)
GAS PIPING INLET
(Top or Bottom)
CONDENSATE
TRAP CONNECTION
(Bottom)
1 (25)
Front Panel
1 (25)
Front Panel
2-7/8
(73)
2-7/8
(73)

ML193UH / Page 12
OPTIONAL ACCESSORY DIMENSIONS - INCHES (MM)
1-1/4
HORIZONTAL (END) FILTER KIT
FRONT VIEW
24−3/4
(629)
AB
23−1/2
(597)
5/8
(16)
RETURN
AIR
OPENING
SIDE VIEW
AIR FLOW
AIR FILTER
(Furnished)
(32)
5/8
(16)
5/8
(16)
5/8
(16)
Optional Return Air Base
(Upflow Applications Only - For use with B, C and D cabinets)
NOTE- Optional Side Return Air Filter Kits are not for use with Optional Return Air Base.
1Both the unit return air opening and the base return air opening must be covered by a single plenum or IAQ cabinet.
Minimum unit side return air opening dimensions for units requiring 1800 cfm or more of air (W x H): 23 x 11 in. (584 x 279 mm).
The opening can be cut as needed to accommodate plenum or IAQ cabinet while maintaining dimensions shown.
Side return air openings must be cut in the field. There are cutting guides stenciled on the cabinet for the side return air
opening. The size of the opening must not extend beyond the markings on the furnace cabinet.
2To minimize pressure drop, the largest opening height possible, up to 14 in. (356 mm), is preferred.
FURNACE
FRONT
1 Unit side return air
Opening
SIDE VIEW
3-1/4
(83)
1 23 (584)
Overall
(Maximum)
(584)
23
3/4
(19)
1 22-7/16
(570)
Overall
(Maximum)
SIDE RETURN
AIR OPENINGS
(Either Side)
5-5/8
(143)
1Minimum
11 (279)
2 Maximum
14 (356)
(683)
26-7/8
7-1/4
(184)
IF BASE
IS USED
WITHOUT
IAQ CABINET,
A SINGLE
RETURN AIR
PLENUM
MUST
COVER BOTH
UNIT AND
RETURN
AIR BASE
OPENINGS
INDOOR AIR
QUALITY
CABINET
(PCO, Filter
Cabinet, etc.)
AIR BASE
OPTIONAL
RETURN
CONDENSATE
TRAP
17-1/2 (446) B Width (50W98)
21 (533) C Width (50W99)
24-1/2 (622) D Width (51W00)
Furnace
Cabinet
Width
Catalog
Number
A B
in. mm in. mm
B 89L96 18 457 16-3/4 425
C 89L97 21 533 18-3/4 476
D 89L98 25 635 23-3/4 603

ML193UH / Page 13
DIMENSIONS - INCHES (MM) - FURNACE/COIL COMBINED DIMENSIONS
UPFLOW POSITION
Model No Cased Uncased
(CX34 - cased only)
A B A B
CX34 C33 in. mm in. mm in. mm in. mm
CX34-18/24B-6F
CX34-18/24C-6F
C33-24B
C33-24C 16-1/2 419 49-1/2 1257 13-7/8 352 46-7/8 1191
CX34-25B-6F C33-25B 18-1/2 470 51-1/2 1308 15-7/8 403 48-7/8 1241
CX34-30B-6F
CX34-30C-6F
C33-30B
C33-30C 20-1/2 521 53-1/2 1359 17-3/4 451 50-3/4 1289
CX34-31B-6F C33-31B 22-1/2 572 55-1/2 1410 20-1/4 514 53-1/4 1353
CX34-36B-6F C33-36B 24-1/2 622 57-1/2 1461 21-7/8 556 54-7/8 1394
CX34-36C-6F C33-36C 24-1/2 622 57-1/2 1461 21-1/4 540 54-1/4 1378
CX34-38B-6F C33-38B 24-1/2 622 57-1/2 1461 22 559 55 1397
CX34-42B-6F C33-42B 24-1/2 622 57-1/2 1461 21-7/8 556 54-7/8 1394
CX34-43B-6F C33-43B 27-1/2 699 60-1/2 1537 26-1/4 667 59-1/4 1505
CX34-43C-6F C33-43C 27-1/2 699 60-1/2 1537 25-3/4 654 58-3/4 1492
- - - C33-44C 24-1/2 622 57-1/2 1461 21-1/2 546 54-1/2 1384
CX34-44/48B-6F C33-48B 24-1/2 622 57-1/2 1461 22-1/8 562 55-1/8 1400
CX34-44/48C-6F C33-48C 24-1/2 622 57-1/2 1461 21-1/2 546 54-1/2 1384
CX34-49C-6F C33-49C 29-1/2 749 62-1/2 1588 28-1/2 724 61-1/2 1562
CX34-50/60C-6F C33-50/60C 27-1/2 699 60-1/2 1537 24-3/4 629 57-3/4 1467
CX34-60D-6F C33-60D 25-1/2 648 58-1/2 1486 24-3/4 629 57-3/4 1467
CX34-62C-6F C33-62C 31-1/2 800 64-1/2 1638 30-5/8 778 63-5/8 1616
CX34-62D-6F C33-62D 29-1/2 749 62-1/2 1588 28-3/4 730 61-3/4 1568
HORIZONTAL POSITION
Model
Number
A B
in. mm in. mm
CH33-36B-2F
CH33-36C-2F
CH33-42B-2F
CH33-48C-2F
CH33-60D-2F
26-1/2 673 59-1/2 1511
CH33-44/48B-2F
CH33-50/60C-2F
CH33-62D-2F 31-1/2 800 64-1/2 1638
33
(838)
A
B
A
B
33
(838)

ML193UH / Page 14
OPTIONAL ACCESSORY DIMENSIONS - INCHES (MM)
FLUSH-MOUNT VENT TERMINATION KIT (51W11)
With 2 or 2-1/2 in. (51 or 64 mm) PVC pipe With 3 in. (76 mm) PVC pipe
3 (76) PVC pipe
2 (51) PVC pipe
2-1/2 (64) PVC pipe
When required Use
Field Provided
2-1/2 to 2 in. (64 to 51 mm)
Coupling
Seal all openings
(typical)
2-3/8 (60)
12 (305) minimum
(recommended)
Intake
(Behind Plate)
Exhaust Intake
(Behind Plate)
Exhaust
NOTE - PVC pipe and fittings are not furnished
and must be field furnished.

ML193UH / Page 15
OPTIONAL ACCESSORY DIMENSIONS - INCHES (MM)
CONCENTRIC WALL
TERMINATION APPLICATIONS
INTAKE
AIR EXHAUST
AIR
INTAKE
AIR
INTAKE
AIR
EXHAUST
AIR
OUTSIDE
WALL
12 (305)
Minimum
Above Grade
or Average Snow
Accumulation
12 (305)
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
GRADE
6−1/2
(165)
(Field Supplied)
ELBOW
INTAKE AIR
EXHAUST
AIR
TERMINATION
ASSEMBLY
(Furnished)
71M80 / 69M29 / 44W92 − 2 inch kits
60L46 / 44W93 − 3 inch kits
See Installation Instructions for additional information.
CONCENTRIC ROOF
TERMINATION APPLICATIONS
CLAMP
(Not Furnished)
6
(152)
A
3−1/2 (89) − 2 in. kits
4−1/2 (114) − 3 in. kits
Outdoor Exhaust Accelerator
included with 71M80/44W92
NOTE − Typical illustration for dimensions only. Design may vary depending on kit ordered.
Cat. No. AB
in. mm in. mm
71M80
69M29 33−3/8 848 16−3/4 425
44W92
(Canada) 29 737 15−1/2 394
60L46 38−7/8 987 21−3/16 538
44W93
(Canada) 36−1/8 918 19−1/2 495
Note - Field provided reducer may be
required to adapt larger vent pipe size to termination.
12 in. (305 mm) - 2 in. (51 mm) dia. exhaust pipe
20 in. (508 mm) - 3 in. (76 mm) dia. exhaust pipe
maximum length without
support
NON-DIRECT VENT APPLICATION
NOTE - EXHAUST PIPE SHOWN
Kit Contains Enough Parts For Two Installations
8 in. (203 mm)
minimum
6 in. (152 mm)
maximum
DIRECT VENT APPLICATION
WALL ASSEMBLY TERMINATION KIT − RING KIT 15F74 − 2 inch (51 mm)
See Installation Instructions for additional information.
NOTE − 12 in. (305 mm) minimum height above
average snow accumulation
(from bottom of vent pipe).
12 in. (305 mm) - 2 in. (51 mm) dia. exhaust pipe
20 in. (508 mm) - 3 in. (76 mm) dia. exhaust pipe
maximum length without support
NOTE − 12 in. (305 mm) minimum height above
average snow accumulation
(from bottom of vent pipe).
Note - Field provided reducer may be required to adapt larger vent pipe size to termination.

ML193UH / Page 16
OPTIONAL ACCESSORY DIMENSIONS - INCHES (MM)
12 (305) Minimum
Above Grade or Average
Snow Accumulation
1/2 (13)
FOAM INSULATION
(Field Furnished)
5
(127)
5-1/2
(140)
EXHAUST
AIR
INTAKE
AIR
GRADE
12
(305)
INTAKE
AIR
EXHAUST
AIR
GRADE
8 (203) MIN. Between Ends of Exhaust and Intake Pipe
12 (305) MAX. for 2 (51) Dia. Exhaust
20 (508) MAX. for 3 (76) Dia. Exhaust
WALL SUPPORT
12 (305) MAX. for 2 (51) Dia. Exhaust
20 (508) MAX. for 3 (76) Dia. Exhaust
12 (305) Minimum
Above Grade or Average
Snow Accumulation
WALL TERMINATION KITS (CLOSE-COUPLE)
EXTENDED VENT FOR GRADE CLEARANCE
2 inch (51 mm) 22G44 (US)
3 inch (76 mm) 44J40 (US)
See Installation Instructions for additional information.
6 (152)
Maximum
If Intake and Exhaust Pipe is less than12 in. (305 mm)
above snow accumulation or other obstructions,
field fabricated piping must be installed.
8 (203) MIN.
Note - Field provided reducer may be required to adapt larger vent pipe size to termination.
12 (305) Minimum
Above Grade or Average
Snow Accumulation
1/2 (13)
FOAM INSULATION
(Field Furnished)
5
(127)
5-1/2
(140)
EXHAUST
AIR
INTAKE
AIR
GRADE
12
(305)
INTAKE
AIR
EXHAUST
AIR
GRADE
WALL SUPPORT
12 (305) Minimum
Above Grade or Average
Snow Accumulation
WALL TERMINATION KITS (CLOSE-COUPLE)
EXTENDED VENT FOR GRADE CLEARANCE
2 inch (51 mm) 30G28 (WTK Canada)
3 inch (76 mm) 81J20 (WTK Canada)
See Installation Instructions for additional information.
6 (152)
Maximum
If Intake and Exhaust Pipe is less than12 in. (305 mm)
above snow accumulation or other obstructions,
field fabricated piping must be installed.
12 (305) MAX. for 2 (51) Dia. Exhaust
20 (508) MAX. for 3 (76) Dia. Exhaust
12 (305) MAX. for 2 (51) Dia. Exhaust
20 (508) MAX. for 3 (76) Dia. Exhaust
Note - Field provided reducer may be required to adapt larger vent pipe size to termination.
6 (152) MIN.
6 (152)
MIN.

ML193UH / Page 17
BLOWER DATA
ML193UH070P24B PERFORMANCE (Less Filter)
External
Static
Pressure
in. w.g.
Air Volume / Watts at Various Blower Speeds
High Medium-
High
Medium-
Low Low
cfm Watts cfm Watts cfm Watts cfm Watts
0.00 1140 455 920 365 765 295 710 265
0.10 1135 445 900 360 765 290 690 255
0.20 1125 430 895 350 755 285 680 255
0.30 1090 415 870 340 725 280 660 250
0.40 1065 405 870 325 715 270 635 245
0.50 1020 390 825 315 675 260 605 235
0.60 945 365 780 300 640 250 555 225
0.70 910 350 740 295 585 240 505 220
0.80 790 325 670 275 510 225 455 205
0.90 735 310 575 255 460 220 390 195
ML193UH090P36C PERFORMANCE (Less Filter)
External
Static
Pressure
in. w.g.
Air Volume / Watts at Various Blower Speeds
High Medium-
High
Medium-
Low Low
cfm Watts cfm Watts cfm Watts cfm Watts
0.00 1620 745 1340 620 1130 500 965 405
0.10 1610 720 1335 595 1135 490 975 395
0.20 1565 695 1335 565 1145 465 970 385
0.30 1525 665 1300 555 1135 455 970 370
0.40 1485 635 1295 520 1110 435 960 355
0.50 1431 600 1260 495 1090 405 940 345
0.60 1365 570 1210 475 1035 390 900 330
0.70 1295 535 1155 445 995 365 860 305
0.80 1200 505 1065 415 930 340 745 270
0.90 1060 460 955 375 820 305 695 260
ML193UH090P48C PERFORMANCE (Less Filter)
External
Static
Pressure
in. w.g.
Air Volume / Watts at Various Blower Speeds
High Medium-
High
Medium-
Low Low
cfm Watts cfm Watts cfm Watts cfm Watts
0.00 2025 900 1690 780 1395 645 1200 540
0.10 1995 880 1705 760 1390 635 1205 525
0.20 1925 835 1675 715 1405 605 1205 505
0.30 1850 795 1640 680 1400 580 1170 490
0.40 1790 760 1575 645 1395 560 1170 475
0.50 1700 725 1540 625 1350 535 1140 450
0.60 1610 690 1455 580 1295 505 1100 430
0.70 1540 645 1365 550 1225 480 1030 405
0.80 1415 615 1265 510 1125 445 980 385
0.90 1270 565 1165 470 1060 420 900 350
ML193UH110P48C PERFORMANCE (Less Filter)
External
Static
Pressure
in. w.g.
Air Volume / Watts at Various Blower Speeds
High Medium-
High
Medium-
Low Low
cfm Watts cfm Watts cfm Watts cfm Watts
0.00 2030 905 1750 805 1425 665 1225 530
0.10 1950 865 1755 770 1430 630 1215 515
0.20 1935 840 1675 735 1455 610 1230 505
0.30 1885 810 1660 685 1410 585 1200 485
0.40 1830 780 1585 645 1385 570 1190 470
0.50 1750 740 1565 630 1320 535 1165 455
0.60 1660 695 1485 585 1280 505 1105 425
0.70 1540 665 1380 555 1230 485 1060 405
0.80 1420 615 1290 520 1140 445 945 375
0.90 1290 575 1175 470 1045 410 850 350
ML193UH045P36B PERFORMANCE (Less Filter)
External
Static
Pressure
in. w.g.
Air Volume / Watts at Various Blower Speeds
High Medium-
High
Medium-
Low Low
cfm Watts cfm Watts cfm Watts cfm Watts
0.00 1600 700 1370 590 1160 475 1005 400
0.10 1600 685 1355 565 1155 465 1015 390
0.20 1550 650 1330 540 1150 445 1000 380
0.30 1480 625 1295 515 1140 430 975 365
0.40 1425 590 1280 490 1105 415 975 350
0.50 1355 565 1190 460 1085 395 940 335
0.60 1320 545 1165 435 1030 375 900 315
0.70 1225 500 1110 425 975 355 855 310
0.80 1135 480 1050 395 920 330 780 280
0.90 1025 445 950 360 800 295 700 255
ML193UH070P36B PERFORMANCE (Less Filter)
External
Static
Pressure
in. w.g.
Air Volume / Watts at Various Blower Speeds
High Medium-
High
Medium-
Low Low
cfm Watts cfm Watts cfm Watts cfm Watts
0.00 1615 680 1355 570 1140 480 1030 400
0.10 1565 660 1365 545 1150 465 1020 385
0.20 1535 630 1340 525 1150 440 1025 375
0.30 1440 600 1300 500 1110 420 1000 350
0.40 1405 570 1255 470 1075 400 975 345
0.50 1340 535 1200 445 1045 380 945 330
0.60 1255 500 1125 420 995 355 875 310
0.70 1165 475 1080 395 935 335 820 290
0.80 1060 455 990 365 870 315 750 265
0.90 955 425 895 345 750 285 660 245
ML193UH045P24B PERFORMANCE (Less Filter)
External
Static
Pressure
in. w.g.
Air Volume / Watts at Various Blower Speeds
High Medium-
High
Medium-
Low Low
cfm Watts cfm Watts cfm Watts cfm Watts
0.00 1140 455 920 365 765 295 710 265
0.10 1135 445 900 360 765 290 690 255
0.20 1125 430 895 350 755 285 680 255
0.30 1090 415 870 340 725 280 660 250
0.40 1065 405 870 325 715 270 635 245
0.50 1020 390 825 315 675 260 605 235
0.60 945 365 780 300 640 250 555 225
0.70 910 350 740 295 585 240 505 220
0.80 790 325 670 275 510 225 455 205
0.90 735 310 575 255 460 220 390 195

ML193UH / Page 18
BLOWER DATA
ML193UH110P60C PERFORMANCE (Less Filter)
External
Static
Pressure
in. w.g.
Air Volume / Watts at Different Blower Speeds
Bottom Return Air, Side Return Air with Optional Return
Air Base, Return Air from Both Sides or Return Air from
Bottom and One Side.
Single Side Return Air − Air volumes in bold require eld
fabricated transition to accommodate 20 x 25 x 1 in. air lter
in order to maintain proper air velocity.
High Medium-High Medium-Low Low High Medium-High Medium-Low Low
cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts
0.00 2525 1560 2175 1165 1820 905 1465 725 2520 1545 2135 1150 1750 905 1445 720
0.10 2585 1545 2200 1135 1860 900 1475 710 2555 1545 2135 1115 1775 890 1470 715
0.20 2515 1505 2150 1110 1840 890 1490 705 2465 1480 2105 1085 1775 875 1465 705
0.30 2445 1445 2135 1065 1790 870 1500 690 2370 1430 2045 1055 1750 855 1460 690
0.40 2340 1385 2065 1035 1770 845 1500 675 2275 1375 1990 1010 1730 830 1460 680
0.50 2230 1350 1985 985 1755 810 1470 665 2185 1345 1930 970 1690 800 1460 655
0.60 2130 1295 1920 950 1685 785 1425 640 2060 1290 1850 935 1650 780 1420 635
0.70 2030 1250 1815 905 1640 760 1405 625 1930 1230 1760 900 1580 750 1355 610
0.80 1920 1190 1735 865 1560 725 1350 605 1825 1180 1660 855 1505 710 1290 585
0.90 1735 1135 1620 830 1450 685 1270 575 1665 1130 1520 810 1415 675 1210 560
ML193UH135P60D PERFORMANCE (Less Filter)
External
Static
Pressure
in. w.g.
Air Volume / Watts at Different Blower Speeds
Bottom Return Air, Side Return Air with Optional Return
Air Base, Return Air from Both Sides or Return Air from
Bottom and One Side.
Single Side Return Air − Air volumes in bold require eld
fabricated transition to accommodate 20 x 25 x 1 in. air lter
in order to maintain proper air velocity.
High Medium-High Medium-Low Low High Medium-High Medium-Low Low
cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts
0.00 2800 1715 2155 1160 1730 900 1375 695 2720 1685 2110 1135 1670 905 1355 705
0.10 2770 1665 2170 1145 1740 895 1415 700 2660 1650 2110 1115 1725 895 1390 700
0.20 2690 1635 2150 1110 1770 890 1450 700 2600 1585 2125 1090 1750 885 1450 695
0.30 2590 1560 2140 1080 1785 870 1455 695 2535 1525 2075 1065 1750 865 1465 685
0.40 2500 1535 2105 1055 1785 855 1475 690 2400 1490 2055 1030 1715 845 1460 680
0.50 2420 1465 2050 1025 1770 835 1465 665 2335 1420 2000 1005 1725 825 1455 660
0.60 2330 1410 2015 995 1720 810 1460 655 2270 1385 1950 970 1720 800 1445 650
0.70 2225 1370 1965 960 1690 785 1450 650 2175 1335 1895 950 1665 780 1430 635
0.80 2150 1335 1875 925 1655 755 1435 630 2075 1295 1840 910 1605 745 1400 620
0.90 2025 1290 1830 890 1575 720 1375 605 1975 1255 1755 875 1540 725 1340 590

ML193UH / Page 19

NOTE - Due to Lennox’ ongoing commitment to quality, Specications, Ratings and Dimensions subject to change without notice and without incurring liability.
Improper installation, adjustment, alteration, service or maintenance can cause property damage or personal injury.
Installation and service must be performed by a qualied installer and servicing agency. ©2010 Lennox Industries, Inc.
Visit us at www.lennox.com
For the latest technical information, www.lennoxdavenet.com
Contact us at 1-800-4-LENNOX
REVISIONS
Sections Description of Change
Document Added Specications, Ratings Blower Data and Dimensions for ML193UH045P24B
model.
Specications Changed Btuh output values on certain models.