Lennox MERIT ML14XC1 User manual

AIR CONDITIONERS
ML14XC1
MERIT®Series
R-410A
Bulletin No. 210760
November 2017
Supersedes August 2017
SEER up to 17.00
1.5 to 5 Tons
Cooling Capacity - 17,800 to 60,000 Btuh
MODEL NUMBER IDENTIFICATION
PRODUCT SPECIFICATIONS
Nominal Cooling Capacity
018 = 1.5 tons
024 = 2 tons
030 = 2.5 tons
036 = 3 tons
041 = 3.5 tons
042 = 3.5 tons
047 = 4 tons
048 = 4 tons
059 = 5 tons
060 = 5 tons
ML 14 X C 1 - 036 - 230 A 01
Nominal SEER
14 = 14 SEER
Refrigerant Type
X = R-410A
Revision Level
Voltage
230 = 208/230V-1 phase-60hz
Product Tier
ML = Merit®Series
Unit Type
C = Air Conditioner (Condenser)
Cooling Stages
1 = Single Stage Compressor
Ratings Revision Level
Regional Standards
– (dash) = All Regions or Southwest Region (dependent on size)
S = North and South Regions
ML14XC1 - 1.5-5 TON AIR CONDITIONERS

ML14XC1 - 1.5 to 5 Ton Air Conditioner / Page 2
WARRANTY
Compressor - limited warranty for ve years in
residential installations and ve years in non-residential
installations.
All other covered components - ve years in
residential installations and one year in non-residential
installations.
Note - Refer to Lennox Equipment Limited Warranty
certicate included with unit for specic details.
APPROVALS
AHRI Certied to AHRI Standard 210/240-2008.
Sound rated in Lennox reverberant sound test room
in Accordance with test conditions included in AHRI
Standard 270-2008.
Tested in the Lennox Research Laboratory
environmental test room.
Rated According to U.S. Department of Energy (DOE)
test procedures.
Region specic models meet the minimum efciency
requirements for U.S DOE Federal Regional Standards
in that area.
Units and components within bonded for grounding to
meet safety standards for servicing required by UL,
NEC and CEC.
Units are ETL certied for the U.S. and Canada.
ISO 9001 Registered Manufacturing Quality System.
For expanded ratings, see www.LennoxPROs.com.
APPLICATIONS
SEER up to 17.00.
1.5 through 5 ton.
Single-phase power supply.
Sound levels as low as 73 dB.
Vertical air discharge allows concealment behind shrubs
at grade level or out of sight on a roof.
Matching add-on furnace indoor coils or air handlers
provide a wide range of cooling capacities and
applications. See AHRI System Matches.
See Indoor Coils and Air Handlers sections for data.
Units shipped completely factory assembled, piped and
wired. Each unit test operated at the factory ensuring
proper operation.
Installer must set air conditioner, connect refrigerant
lines and make electrical connections to complete job.
REFRIGERATION SYSTEM
R-410A Refrigerant
Non-chlorine, ozone friendly, R-410A.
Unit pre-charged with refrigerant.
See Specication table.
Outdoor Coil Fan
Direct drive fan moves large air volumes uniformly
through entire condenser coil for high refrigerant cooling
capacity.
Vertical air discharge minimizes operating sounds and
eliminates damage to lawn and shrubs.
Fan motor has sleeve bearings (-018 through -048
and -060 models), ball bearings (-059 model) and is
inherently protected.
Motor totally enclosed for maximum protection from
weather, dust and corrosion.
Rain shield on motor provides additional protection from
moisture.
Louvered steel top fan guard furnished as standard.
Fan service access accomplished by removal of top
panel.
High Pressure Switch
Shuts off unit if abnormal operating conditions cause the
discharge pressure to rise above setting.
Protects compressor from excessive condensing
pressure.
Manual reset.
Lennox Quantum™ Coil
Enhanced aluminum alloy tube/enhanced n coil for
superior corrosion resistance.
Lennox designed and fabricated coil.
Ripple-edged aluminum ns.
Aluminum tube construction.
Lanced ns provide maximum exposure of n surface to
air stream resulting in excellent heat transfer.
Fin collars grip tubing for maximum contact area.
Flared shoulder tubing connections/silver soldering
construction.
Coil is factory tested under high pressure to ensure
leakproof construction.
Steel louvered panels provide complete coil protection.
Panels can be completely removed for servicing.
A
B
C
B
C
D
E
F
FEATURES
CONTENTS
AHRI System Matches - All Regions ......................... 11
AHRI System Matches - North / South Regions........ 36
AHRI System Matches - Southwest Regions ............ 78
Dimensions - Unit ........................................................ 8
Electrical Data.............................................................. 6
Features....................................................................... 2
Field Wiring.................................................................. 5
Installation Clearances ................................................ 5
Model Number Identication........................................ 1
Optional Accessories ................................................... 6
Sound Data.................................................................. 9
Specications............................................................... 6

ML14XC1 - 1.5 to 5 Ton Air Conditioner / Page 3
REFRIGERATION SYSTEM
R-410A Refrigerant
Non-chlorine, ozone friendly, R-410A.
Unit pre-charged with refrigerant.
See Specication table.
Outdoor Coil Fan
Direct drive fan moves large air volumes uniformly
through entire condenser coil for high refrigerant cooling
capacity.
Vertical air discharge minimizes operating sounds and
eliminates damage to lawn and shrubs.
Fan motor has sleeve bearings (-018 through -048
and -060 models), ball bearings (-059 model) and is
inherently protected.
Motor totally enclosed for maximum protection from
weather, dust and corrosion.
Rain shield on motor provides additional protection from
moisture.
Louvered steel top fan guard furnished as standard.
Fan service access accomplished by removal of top
panel.
High Pressure Switch
Shuts off unit if abnormal operating conditions cause the
discharge pressure to rise above setting.
Protects compressor from excessive condensing
pressure.
Manual reset.
Lennox Quantum™ Coil
Enhanced aluminum alloy tube/enhanced n coil for
superior corrosion resistance.
Lennox designed and fabricated coil.
Ripple-edged aluminum ns.
Aluminum tube construction.
Lanced ns provide maximum exposure of n surface to
air stream resulting in excellent heat transfer.
Fin collars grip tubing for maximum contact area.
Flared shoulder tubing connections/silver soldering
construction.
Coil is factory tested under high pressure to ensure
leakproof construction.
Steel louvered panels provide complete coil protection.
Panels can be completely removed for servicing.
A
B
C
High Capacity Liquid Line Drier
Furnished with unit for eld installation.
Approved for use with R-410A systems.
Traps any moisture or dirt that could contaminate the
refrigerant system.
Refrigerant Flow Control
Units applicable to
expansion valve
systems or RFC
systems when
matched with
specic indoor coils.
RFCIV:
Accurately meters
refrigerant in
system.
Refrigerant control
is accomplished by exact sizing of refrigerant metering
orice.
The principle involves matching indoor coil with proper
bore size of orice in metering device.
Equalizes pressure shortly after compressor stops, unit
starts unloaded, eliminating need for additional controls.
Furnished with air conditioner.
Optional Accessories
Expansion Valve Kits
Must be ordered extra and eld installed on certain
indoor units. See Refrigerant Metering Devices table.
Chatleff-style ttings.
Freezestat
Installs on or near the vapor line of the indoor coil or on
the suction line.
Senses suction line temperature and cycles the
compressor off when suction line temperature falls
below it’s setpoint.
Opens at 29°F and closes at 58°F.
Loss of Charge Switch Kit
Helps protect the compressor from damage due low
refrigerant charge conditions.
SPST, normally-closed switch, automatic reset switch
mounted on suction line.
Refrigerant Line Kits
Refrigerant lines (suction & liquid) are shipped
refrigeration clean. Lines are cleaned, dried,
pressurized and sealed at factory.
Suction line fully insulated.
Lines are stubbed at both ends.
Not available for -059-060 models. Must be eld fabricated.
O−RING
RFCIV METERING SYSTEM
RFCIV
ORIFICE
ORIFICE BODY
(On Coil)
SEAL
NUT SWEAT
CONNECTION
LIQUID
LINE
LIQUID
LINE SCREEN
FEATURES

ML14XC1 - 1.5 to 5 Ton Air Conditioner / Page 4
COMPRESSOR
Scroll Compressor
Compressor features high
efciency with uniform suction
ow, constant discharge ow, high
volumetric efciency and quiet
operation.
Compressor consists of two
involute spiral scrolls matched
together to generate a series of
crescent shaped gas pockets
between them.
During compression, one scroll
remains stationary while the other
scroll orbits around it.
Gas is drawn into the outer pocket, the pocket is sealed
as the scroll rotates.
As the spiral movement continues, gas pockets are
pushed to the center of the scrolls. Volume between the
pockets is simultaneously reduced.
When the pocket reaches the center, gas is now at high
pressure and is forced out of a port located in the center
of the xed scrolls.
During compression, several pockets are compressed
simultaneously resulting in a smooth continuous
compression cycle.
Continuous ank contact, maintained by centrifugal
force, minimizes gas leakage and maximizes efciency.
Scroll compressor is tolerant to the effects of slugging
and contaminants. If this occurs, scrolls separate,
allowing liquid or contaminants to to be worked toward
the center and discharged.
Low gas pulses during compression reduces
operational sound levels.
Compressor motor is internally protected from
excessive current and temperature.
Compressor is installed in the unit on resilient rubber
mounts for vibration free operation.
Compressor Crankcase Heater (-041, -047, -048, -059
& -060 Models)
Protects against refrigerant migration that can occur
during low ambient operation.
Optional Accessories
Compressor Crankcase Heater (Optional for 018-
024-030-036-042)
Protects against refrigerant migration that can occur
during low ambient operation.
Compressor Sound Cover
A reinforced vinyl compressor cover containing a 1-1/2
inch thick batt of berglass insulation.
All open edges are sealed with a one-inch wide hook
and loop fastening tape.
D
CONTROLS
Optional Accessories
Compressor Hard Start Kit
Single-phase units are equipped with a PSC
compressor motor. This type of motor normally doesn’t
need a potential relay and start capacitor.
In conditions such as low voltage, this kit may be
required to increase the compressor starting torque.
Compressor Low Ambient Cut-Off Switch
Non-adjustable switch (low ambient cut-out) prevents
compressor operation when outdoor temperature is
below 35°F.
Compressor Time-Off Control
Kit prevents compressor short-cycling and allows time
for suction and discharge pressure to equalize.
Permits compressor start-up in an unloaded condition.
Automatic reset with 5 minute delay between
compressor shut-off and start-up.
Indoor Blower Off Delay Relay
Delays the indoor blower-off time during the cooling
cycle.
See AHRI System Matches for usage.
Low Ambient Kit
Air conditioners operate satisfactorily in the cooling
mode down to 45°F outdoor air temperature without any
additional controls.
Kit can be added in the eld enabling unit to operate
properly down to 30°F in the cooling mode.
Crankcase heater and freezestat should be installed on
compressors equipped with a Low Ambient Kit.
A compressor lock-out thermostat should be added to
terminate compressor operation below recommended
operation conditions.
Thermostat
Thermostat not furnished with unit. See Thermostat
bulletins in Controls Section and Lennox Price Book.
FEATURES

ML14XC1 - 1.5 to 5 Ton Air Conditioner / Page 5
CABINET
Heavy gauge steel cabinet with ve station metal wash
process.
Louvered heavy gauge steel panels surround unit on all
four sides to prevent damage to the coil.
Powder paint nish provides superior rust and corrosion
protection.
Control box is conveniently located with all controls
factory wired.
Corner patch plate allows access to compressor
components.
Drainage holes are provided in base section for
moisture removal.
PermaGuard™ Unit Base
Durable zinc-coated base section resists rust and
corrosion.
Refrigerant Line Connections, Electrical Inlets,
Service Valves
Sweat connection suction and liquid lines are located on
corner of unit cabinet.
Fully serviceable brass service valves prevent corrosion
and provide access to refrigerant system. Suction valve
can be fully shut off, while liquid valve may be front
seated to manage refrigerant charge while servicing
system.
Refrigerant line connections and eld wiring inlets are
located in one central area of cabinet for easy access.
See dimension drawing.
E
F
B
DISCONNECT
SWITCH
(By Others)
LENNOX
AIR
CONDITIONER
LENNOX
HEATING UNIT
OR
AIR HANDLER
UNIT
DISCONNECT
SWITCH
(By Others)
THERMOSTAT
(Optional)
C
D
A
See
NOTES
See NOTES
See NOTES
See
NOTES
CONTROL
BOX
A - Two Wire Power (not furnished). See Indoor Unit Electrical Data
B - Two Wire Power (not furnished). See Electrical Data
C - Four Wire Low Voltage (not furnished). 18 ga. minimum
D - Five Wire Low Voltage (not furnished). 18 ga. minimum
All wiring must conform to NEC or CEC and local electrical codes.
NOTES:
Service clearance of 30 in. (762 mm) must be maintained on
one of the sides adjacent to the control box.
Clearance to one of the other three sides must be
36 in. (914 mm)
Clearance to one of the remaining two sides may be
12 in. (305 mm) and the nal side may be 6 in. (152 mm).
A clearance of 24 in. must be maintained between two units.
48 in. (1219 mm) clearance required on top of unit.
Optional Accessories
Unit Stand-Off Kit
Black high density polyethylene feet are available to
raise unit off of mounting surface away from damaging
moisture.
Four feet are furnished per order number.
FEATURES
FIELD WIRING INSTALLATION CLEARANCES - IN. (MM)

ML14XC1 - 1.5 to 5 Ton Air Conditioner / Page 6
SPECIFICATIONS
General
Data
Model No. All Regions - - - - - - - - - - - - ML14XC1-041
North / South Regions ML14XC1S018 ML14XC1S024 ML14XC1S030 ML14XC1S036 - - -
Southwest Region ML14XC1-018 ML14XC1-024 ML14XC1-030 ML14XC1-036 - - -
Nominal Tonnage 1.5 2 2.5 3 3.5
Indoor Unit Expansion Valve (TXV) (If needed) 12J18 12J18 12J18 12J19 12J20
RFCIV Metering Orice Usage 0.052 0.060 0.060 0.071 N/A
Connections
(sweat)
Liquid line o.d. - in. 3/8 3/8 3/8 3/8 3/8
Suction line o.d. - in. 3/4 3/4 3/4 7/8 7/8
1 Refrigerant (R-410A) furnished 4 lbs. 9 oz. 4 lbs. 9 oz. 5 lbs. 8 oz. 7 lbs. 1 oz. 9 lbs. 0 oz.
Outdoor
Coil
Net face area
sq. ft.
Outer coil 13.22 16.33 21.00 16.33 21.00
Inner coil - - - - - - - - - 15.75 20.25
Tube diameter - in. 5/16 5/16 5/16 5/16 5/16
Number of rows 1 1 1 2 2
Fins per inch 26 26 26 22 22
Outdoor
Fan
Diameter - in. 18 22 22 22 22
Number of blades 3 3 3 3 3
Motor hp 1/10 1/6 1/6 1/6 1/6
Cfm 2290 3160 3160 3160 3050
Rpm 1075 825 825 825 825
Watts 160 215 215 190 190
Shipping Data - lbs. 1 package 134 152 169 175 192
ELECTRICAL DATA
Line voltage data - 60 hz - 1ph 208/230V 208/230V 208/230V 208/230V 208/230V
2 Maximum overcurrent protection (amps) 20 25 25 30 30
3 Minimum circuit ampacity 11.9 14.6 17 18 19.3
Compressor Rated load amps 9.0 10.9 12.8 13.6 14.7
Locked rotor amps 48 59.3 67.8 79 75
Power factor 0.97 0.97 0.97 0.96 0.96
Condenser
Fan Motor
Full load amps 0.7 1 1 1 1
Locked rotor amps 1.3 1.9 1.9 1.9 1.9
OPTIONAL ACCESSORIES - ORDER SEPARATELY
Compressor Crankcase Heater 93M04 • • • •
Factory •
Compressor Hard
Start Kit
Copeland 10J42 • • •
LG 88M91 • • • • •
Compressor Low Ambient Cut-Off Switch 45F08 • • • • •
Compressor Sound Cover 69J03 • • • • •
Compressor Time-Off Control 47J27 • • • • •
Freezestat 3/8 in. tubing 93G35 • • • • •
5/8 in. tubing 50A93 • • • • •
Indoor Blower Off Delay Relay 58M81 • • • • •
Loss of Charge Switch Kit 84M23 • • • • •
4Low Ambient Kit (Fan Cycling) 34M72 • • • • •
Refrigerant Line
Sets
L15-41-20, L15-41-30,
L15-41-40, L15-41-50
•••
L15-65-30, L15-65-40,
L15-65-50
• •
Unit Stand-Off Kit 94J45 • • • • •
NOTE - Extremes of operating range are plus 10% and minus 5% of line voltage.
1 Refrigerant charge sufcient for 15 ft. length of refrigerant lines. For longer line set requirements see the Installation Instructions for information about line set length and
additional refrigerant charge required.
2HACR type circuit breaker or fuse.
3Refer to National or Canadian Electrical Code manual to determine wire, fuse and disconnect size requirements.
4Crankcase Heater and Freezestat are recommended with Low Ambient Kit.

ML14XC1 - 1.5 to 5 Ton Air Conditioner / Page 7
SPECIFICATIONS
General
Data
Model No. All Regions - - - ML14XC1-047 ML14XC1-048 ML14XC1-059 ML14XC1-060
North / South Regions ML14XC1S042 - - - - - - - - - - - -
Southwest Region ML14XC1-042 - - - - - - - - - - - -
Nominal Tonnage 3.5 4 4 5 5
Indoor Unit Expansion Valve (TXV) (If needed) 12J20 12J20 12J20 12J20 12J20
RFCIV Metering Orice Usage 0.081 N/A 0.083 N/A 0.096
Connections
(sweat)
Liquid line o.d. - in. 3/8 3/8 3/8 3/8 3/8
Suction line o.d. - in. 7/8 7/8 7/8 1-1/8 1-1/8
1 Refrigerant (R-410A) furnished 8 lbs. 12 oz. 11 lbs. 0 oz. 9 lbs. 12 oz. 11 lbs. 13 oz. 12 lbs. 0 oz.
Outdoor
Coil
Net face area
sq. ft.
Outer coil 21.00 22.17 21.00 29.09 29.09
Inner coil 20.25 21.33 20.25 28.16 28.16
Tube diameter - in. 5/16 5/16 5/16 5/16 5/16
Number of rows 2 2 2 2 2
Fins per inch 22 22 22 22 22
Outdoor
Fan
Diameter - in. 22 26 22 26 26
Number of blades 3 4 4 4 4
Motor hp 1/6 1/3 1/4 1/3 1/3
Cfm 3050 4400 3600 4550 4550
Rpm 825 825 825 820 825
Watts 190 310 310 215 310
Shipping Data - lbs. 1 package 211 231 218 253 267
ELECTRICAL DATA
Line voltage data - 60 hz - 1ph 208/230V 208/230V 208/230V 208/230V 208/230V
2 Maximum overcurrent protection (amps) 40 35 40 45 50
3 Minimum circuit ampacity 23.4 21.9 24.2 28.8 29.6
Compressor Rated load amps 17.9 16.1 18 20.8 22.2
Locked rotor amps 112 105.5 117 127.1 127.9
Power factor 0.96 0.98 0.96 0.98 0.98
Condenser
Fan Motor
Full load amps 1 1.8 1.7 2.8 1.8
Locked rotor amps 1.9 2.9 3.2 - - - 2.9
OPTIONAL ACCESSORIES - ORDER SEPARATELY
Compressor Crankcase Heater 93M04 •
Factory • • • •
Compressor Hard
Start Kit
Copeland 10J42 • •
LG 88M91 • • • • •
Compressor Low Ambient Cut-Off Switch 45F08 • • • • •
Compressor Sound Cover 69J03 • • • • •
Compressor Time-Off Control 47J27 • • • • •
Freezestat 3/8 in. tubing 93G35 • • • • •
5/8 in. tubing 50A93 • • • • •
Indoor Blower Off Delay Relay 58M81 • • • • •
Loss of Charge Switch Kit 84M23 • • • • •
4Low Ambient Kit (Fan Cycling) 34M72 • • • •
68M04 •
Refrigerant Line
Sets
L15-65-30, L15-65-40,
L15-65-50
• • •
Field Fabricate • •
Unit Stand-Off Kit 94J45 • • • • •
NOTE - Extremes of operating range are plus 10% and minus 5% of line voltage.
1 Refrigerant charge sufcient for 15 ft. length of refrigerant lines. For longer line set requirements see the Installation Instructions for information about line set length and
additional refrigerant charge required.
2HACR type circuit breaker or fuse.
3Refer to National or Canadian Electrical Code manual to determine wire, fuse and disconnect size requirements.
4Crankcase Heater and Freezestat are recommended with Low Ambient Kit.

ML14XC1 - 1.5 to 5 Ton Air Conditioner / Page 8
SUCTION AND
C
SIDE VIEW
DISCHARGE AIR
SIDE VIEW
A
B
A
LIQUID LINE
CONNECTION
OUTDOOR
COIL FAN
COMPRESSOR
OPTIONAL UNIT
STANDOFF KIT (4)
(FIELD INSTALLED)
4-3/
8
INLET
AIR
INLET
AIR
TOP VIEW
INLET AIR
INLET AIR
SUCTION LINE
CONNECTION
LIQUID LINE
CONNECTION 6-3/8
(162)
TOP VIEW BASE SECTION
COMPRESSOR
COIL DRAIN OUTLETS
(Around perimeter of base)
OPTIONAL UNIT
STAND-OFF KIT (4)
(Field Installed)
(111
)
4-3/8
4-3/8
4-3/84-3/8
6-3/8
(162)
(111)(111)
(111
)(
111)
4-3/8
(111)
2 (51)
3/4 (19)
2-3/4 (70)
ELECTRICAL
INLETS
Model A B C
inches mm inches mm inches mm
018 24-1/4 616 29-1/4 743 28-1/2 724
024 28-1/4 718 29-1/4 743 28-1/2 724
030 28-1/4 718 37-1/4 946 36-1/2 927
036 28-1/4 718 29-1/4 743 28-1/2 724
041 28-1/4 718 37-1/4 946 36-1/2 927
042 28-1/4 718 37-1/4 946 36-1/2 927
047 32-1/4 817 33-1/4 845 32-1/2 826
048 28-1/4 718 37-1/4 946 36-1/2 927
059 32-1/4 817 43-1/4 1099 42-1/2 1080
060 32-1/4 817 43-1/4 1099 42-1/2 1080
DIMENSIONS - UNIT - INCHES (MM)

ML14XC1 - 1.5 to 5 Ton Air Conditioner / Page 9
SOUND DATA
1Unit
Model
Octave Band Linear Sound Power Levels dB, re 10-12 Watts
Center Frequency - HZ 1 Sound Rating
Number (dB)
125 250 500 1000 2000 4000 8000
018 53.0 58.5 66.5 69.5 65.0 62.5 54.5 73
024 56.0 66.0 72.0 71.0 67.0 63.0 56.5 76
030 55.0 64.5 70.5 72.5 67.5 61.0 54.0 76
036 58.0 67.5 71.5 70.5 66.5 61.5 55.0 76
041 56.5 64.0 70.0 69.0 66.0 62.5 56.0 74
042 56.0 65.0 71.0 71.5 67.5 62.0 55.0 76
047 61.5 71.5 76.5 75.5 71.5 65.5 56.5 80
048 61.5 68.0 73.5 72.5 69.0 64.0 56.5 78
059 62.0 69.5 73.0 71.0 69.0 63.5 55.0 77
060 63.5 70.0 75.0 75.0 70.5 68.0 61.0 80
NOTE - the octave sound power data does not include tonal correction.
1Tested according to AHRI Standard 270-2008 test conditions.

ML14XC1 - 1.5 to 5 Ton Air Conditioner / Page 10
AHRI STANDARD 210/240
Cooling or heating capacities are net values, including
the effects of blower motor heat, and do not include
supplementary heat. Power input is the total power input
to the compressor(s) and fan(s), plus any controls and
other items required as part of the system for normal
operation.
Units which do not have an indoor air-circulating blower
furnished as part of the model, i.e., split system with
indoor coil only, is established by subtracting from the
total cooling capacity 1250 Btu/h per 1,000 cfm, and by
adding the same amount to the heating capacity. Total
power input for both heating and cooling is increased by
365 W per 1,000 cfm of indoor air circulated.
TXV/ORIFICE USAGE
Use this table for C33, C35, CH23, CH33, CH35 and CR33
Field Installed TXV/Orice Match-Ups.
Model Refrigerant Metering Orice
(RFC)
Thermal
Expansion
Valve (TXV)
Order No. Orice Size
018 10W94 0.052 12J18
024 10W97 0.060 12J18
030 11W00 0.067 12J18
036 11W01 0.071 12J19
041 N/A N/A 12J20
042 11W06 0.081 12J20
047 N/A N/A 12J20
048 11W07 0.083 12J20
059 N/A N/A 12J20
060 11W14 0.096 12J20
CX34, CX35 upow coils and all Lennox air handlers are shipped with a factory
installed TXV. In most cases, no change out of the valve is needed.
If a change out is required it will be listed in the “TXV SUBSTITUTIONS” table.
The correct TXV must be ordered separately and eld installed.
C33, C35, CH33 and CH35 coils - Use the orice shipped with the outdoor unit
or replace the factory installed orice with the expansion valve listed.
CR33 and CH23 coils - Use the orice shipped with the outdoor unit or use the
expansion valve listed.
MOST POPULAR MATCHES
Outdoor Unit
Model
Indoor Unit
Model No
018 CX34-25
024 CX34-25
030 CX34-31
036 CX34-38
041 CX34-49
042 CX34-49
047 CX34-62C
048 CX34-62C
059 CX34-62C
060 CX34-62C
*TXV SUBSTITUTIONS
Use this table to determine if the factory installed TXV in
the indoor unit needs to be replaced.
Model Indoor Coil or Air
Handler
Factory
TXV
Replacement
TXV
030 CX35-48 12J20 12J18
030 CX34-42 12J20 12J18
030 CX34-43 12J20 12J18
030 CX35-48 12J20 12J18
041 CX34-38 12J19 12J20
041 CX35-36 12J19 12J20
*CX34 coils and all air handlers - The factory installed expansion valve must
be replaced with the expansion valve listed (ordered separately).
If the combination is not listed above, the factory installed TXV is used.