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BLD2021-0807_Manufacturer_Specifications_and_Installation_Instructions_6.11.2021_3.13.38_PM_2245921AIR CONDITIONERS LE___ NNOX RESIDENTIAL PROD UC T SPEC/FICA TONS MODEL NUMBER IDENTIFICATION ML14XC1 MERIT° Series R-410A - Single -Phase - 60 Hz Bulletin No. 210834 April 2021 Supersedes July 2020 M Em R I T° SERIES LENNOX QUANTUM' COIL SEER up to 17.00 1.5to5Tons Cooling Capacity - 18,000 to 60,000 Btuh ML14XC1-036-23OA01 Product Tier --------------- ------ Revision Level ML = Merit' Series ' ' ' ' ' ' ' ' ------ Nominal SEEMOMMR - � ' ' ' ' ' •-------- Ratings Revision Level 14 = 14 SEER � ' ' ' ' ' � � ' •------ Refrigerant Type ------- , Voltage X = R 410A ; ; 230 - 208/23OV-1 phase-60Hz Unit Type ----- •-------- C = Air Conditioner (Condenser) ' Cooling Stages ---- 1 = Single Stage Compressor Regional Standards -- - (dash) = All Regions) S = Southeast and North Regions 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 FEATURE HIGHLIGHTS 1. Outdoor Coil Fan 2. Quantum*" Coil 3. Scroll Compressor 4. Heavy Gauge Steel Cabinet 5. Refrigerant Line Connections and Access CONTENTS Approvals And Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Controls - Order Separately . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Dimensions- Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Features...........................................................3 Field Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Installation Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Optional Accessories - Order Separately . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 SoundData........................................................10 Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 TXV/Orifice Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 ML14XC1 - 1.5 to 5 Ton Air Conditioner / Page 2 APPROVALS AND WARRANTY APPROVALS • AHRI Standard 210/240 certified • AHRI Certified system match -ups and expanded ratings, visit www.LennoxPros.com • ENERGY STAR° Certified • Sound rated to AHRI Standard 270-2008 test conditions • Tested in Lennox' Research Laboratory environmental test room • Rated According to U.S. Department of Energy (DOE) test procedures • Region specific models meet the minimum efficiency requirements for U.S. DOE Federal Regional Standards in that area • Unit and components ETL, NEC and CEC bonded for grounding to meet safety standards for servicing • ETL certified (U.S. and Canada) • ISO 9001 Registered Manufacturing Quality System WARRANTY • Compressor: • Limited five years in residential installations • Limited five years in non-residential installations • All other covered components: • Limited five years in residential installations • Limited one year in non-residential installations NOTE - Refer to Lennox Equipment Limited Warranty certificate included with unit for specific details FEATURES APPLICATIONS © QuantumTM Coil • 1.5 through 5 ton • Lennox designed and fabricated coil • Sound levels as low as 73 dBA • Enhanced aluminum alloy tube/enhanced fin coil • Single-phase power supply • Vertical air discharge • Applicable to indoor air handlers or gas furnaces with indoor add -on coils • Shipped completely factory assembled, piped and wired REFRIGERATION SYSTEM R-410A Refrigerant • Non -chlorine, ozone friendly • Unit is factory pre -charged OOutdoor Coil Fan • Direct drive fan • Vertical air discharge • Motor totally fan motor • Sleeve bearings (-018 through -048 and -060 models), • Ball bearings (-059 model) • Inherently protected • Motor rain shield • Louvered steel fan guard • Superior corrosion resistance • Ripple -edged aluminum fins • Aluminum tube construction • Lanced fins for maximum fin surface exposure • Fin collars grip tubing for maximum contact area • Flared shoulder tubing connections • Factory tested under high pressure • Entire coil is accessible for cleaning High Capacity Liquid Line Drier • Furnished with unit for field installation • Approved for use with R-410A systems • Traps any moisture or dirt that could contaminate the refrigerant system High Pressure Switch • Protects the system from high pressure conditions • Manual reset ML14XC1 - 1.5 to 5 Ton Air Conditioner / Page 3 FEATURES REFRIGERATION SYSTEM Refrigerant Flow Control • Units applicable to RFCIV METERING SYSTEM expansion valve ORIFICE BODY RFCIV systems or RFC (On Coil) "BULLET" systems when ORIFICE matched with specific indoor coils O-RING LIQUID � LINE RFCIV: O LIQUID • Accurately meters LINE SCREEN refrigerant in SEAL • system NUT SWEAT Refrigerant control CONNECTION is accomplished by exact sizing of refrigerant metering orifice • The principle involves matching indoor coil with proper bore size of orifice in metering device • Equalizes pressure shortly after compressor stops, unit starts unloaded • Eliminates need for additional controls • Furnished with air conditioner Optional Accessories Expansion Valve Kits • Field installed on certain indoor units • See TXV/Orifice Usage table • Chatleff-style fitting Freezestat • Senses suction line temperature • Cycles compressor off when suction line temperature falls below it's setpoint • Opens at 29°F and closes at 58°F • Installs on or near the discharge line of the evaporator or on the suction line Loss of Charge Switch Kit • Protects compressor from damage from low refrigerant charge conditions • SPST, normally -closed • Automatic reset Refrigerant Line Kits • Refrigerant lines are shipped refrigeration clean • Lines are cleaned, dried, pressurized and sealed at factory • Suction line fully insulated • Lines are stubbed at both ends NOTE - Not available for 059-060 models. Must be field fabricated. COMPRESSOR © Scroll Compressor • High efficiency with uniform suction flow • Constant discharge flow, high volumetric efficiency and quiet operation • Low gas pulses during compression reduces operational sound levels • Compressor motor is internally protected from excessive current and temperature • Muffler in discharge line reduces operating sound levels • Compressor is installed in the unit on resilient rubber mounts for vibration free operation Scroll Compressor Operation • Two involute spiral scrolls matched together 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 fixed scrolls • During compression, several pockets are compressed simultaneously resulting in a smooth continuous compression cycle • Continuous flank contact, maintained by centrifugal force, minimizes gas leakage and maximizes efficiency • Compressor is tolerant to the effects of slugging and contaminants. If this occurs, scrolls separate, allowing liquid or contaminants to be worked toward the center and discharged 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 (018-024-030-036-042 Models) • Protects against refrigerant migration that can occur during low ambient operation Compressor Sound Cover • Reinforced vinyl compressor cover • 1-1/2 inch thick batt fiberglass insulation • All open edges are sealed with a one -inch wide hook and loop fastening tape ML14XC1 - 1.5 to 5 Ton Air Conditioner / Page 4 FEATURES COMPRESSOR (continued) Optional Accessories (continued) 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 • For conditions such as low voltage 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 CONTROLS Optional Accessories iComfort° M30 Smart Wi-Fi Thermostat • Wi-Fi-enabled, electronic 7-day, universal, multi -stage, programmable, touchscreen thermostat • 4 Heat/2 Cool • Auto -changeover • Dual -fuel control with optional outdoor sensor • Controls dehumidification during cooling mode and humidification during heating mode • Offers enhanced capabilities including humidification / dehumidification / dewpoint measurement and control, Humiditrol° control, and equipment maintenance reminders • Easy to read 4.3 in. color touchscreen (measured diagonally) • LCD display with backlight shows the current and set temperature, time, inside relative humidity, system status (operating mode and schedules) and outside temperature (optional outdoor sensor required) • Smooth Setback Recovery starts system early to achieve setpoint at start of program period • Compressor short -cycle protection (5 minutes) • Up to four separate schedules are available plus Schedule IQ'" • One -Touch Away Mode - A quick and easy way to set the cooling and heating setpoints while away • Smart Away'" - Uses geo-fencing technology to determine when the homeowner is within a predetermined distance from the home to operate the system when leaving, away and arriving • Wi-Fi remote monitoring and adjustment through a home wireless network for desktop PCs, laptops and apps for smartphones or tablets • Smart home automation compatible with Amazon Alexa®, Google Assistant and IFTTT • Service Dashboard features online real-time monitoring of installed iComfort° thermostats NOTE - See the iComfort° M30 Smart Wi-Fi Thermostat Product Specifications bulletin in the Controls section for more information. Remote Outdoor Temperature Sensor • Used with the iComfort° M30 Smart Wi-Fi Thermostat • Outdoor sensor allows thermostat to display outdoor temperature NOTE - Sensor is required for the Enhanced Dehumidification Accessory (EDA). Thermostat • Thermostat is not furnished with unit • Lennox Price Book for selection Indoor Blower Off Delay Relay • Delays the indoor blower -off time during the cooling cycle Low Ambient Kit • Air conditioners can operate down to 45°F outdoor air temperature without additional controls • Allows unit to operate properly down to 30°F NOTE - Crankcase heater and freezestat should be installed on compressors equipped with a low ambient kit. NOTE - A compressor lock -out thermostat should be added to terminate compressor operation below recommended operation conditions. ML14XC1 - 1.5 to 5 Ton Air Conditioner / Page 5 FEATURES CABINET O• Heavy gauge steel construction • Louvered heavy gauge steel panels surround unit on all four sides • Five station metal wash process • Powder paint finish • 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 PermaGuardTM Unit Base • Durable zinc -coated base section resists rust and corrosion © Refrigerant Line Connections, Electrical Inlets, Service Valves • Sweat connection suction and liquid lines • Located on corner of unit cabinet • 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 field wiring inlets are located in one central area of the cabinet • See dimension drawing Optional Accessories Unit Stand -Off Kit • Black high density polyethylene feet raise unit off of mounting surface • Four feet are furnished per order number ML14XC1 - 1.5 to 5 Ton Air Conditioner / Page 6 SPECIFICATIONS General Model No. All Regions Data Southeast and North Regions Nominal Tonnage ML14XC1-018 ML14XC1-024 ML14XC1-030 ML14XC1-036 ML14XC1-041 ML14XClSO18 ML14XClSO24 ML14XClSO30 ML14XClSO36 --- 1.5 2 2.5 3 3.5 Indoor Unit Expansion Valve (TXV) (If needed) RFCIV Metering Orifice Usage 12,1118 12J18 12,1118 12J19 12,120 0.052 0.060 0.060 0.071 N/A Connections Liquid line o.d. - in. (sweat) Suction line o.d. - in. 3/8 3/8 3/8 3/8 3/8 3/4 3/4 3/4 7/8 7/8 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 Net face area Outer coil Coil sq. ft. Inner coil 13.22 16.33 21.00 16.33 21.00 - - - - - - - - - 15.75 20.25 Tube diameter - in. Number of rows Fins per inch 5/16 5/16 5/16 5/16 5/16 1 1 1 2 2 26 26 26 22 22 Outdoor Diameter - in. Fan Number of blades Motor hp Cfm Rpm Watts 18 22 22 22 22 3 3 3 3 3 1/10 1/6 1/6 1/6 1/6 2290 3160 3160 3160 3050 1075 825 825 825 825 160 215 215 190 190 Shipping Data - lbs. 1 package 134 152 169 175 192 ELECTRICAL DATA Line voltage data - 60 Hz - 1 ph 2 Maximum overcurrent protection (MOCP) amps s Minimum circuit ampacity (MCA) 208/230V 208/230V 208/230V 208/230V 208/230V 20 25 25 30 30 11.9 14.6 17 18 19.3 Compressor Rated load amps Locked rotor amps Power factor 9.0 10.9 12.8 13.6 14.7 48 59.3 67.8 79 75 0.97 0.97 0.97 0.96 0.96 Condenser Full load amps Fan Motor Locked rotor amps 0.7 1 1 1 1 1.3 1.9 1.9 1.9 1.9 CONTROLS - ORDER SEPARATELY iComfort° M30 Smart Wi-Fi Thermostat 15Z69 Remote Outdoor Temperature Sensor X2658 OPTIONAL ACCESSORIES - ORDER SEPARATELY Compressor Crankcase Heater 93M04 Factory Compressor Hard Copeland 1 OJ42 Start Kit LG 88M91 Compressor Low Ambient Cut -Off Switch 45F08 Compressor Sound Cover 18J42 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 4 Low Ambient Kit (Fan Cycling) 34M72 Refrigerant Line L15-41-20, L15-41-30, Sets L15-41-40, L15-41-50 L15-65-30, L15-65-40, L 15-65-50 Unit Stand -Off Kit 94,1451 NOTE - Extremes of operating range are plus 10% and minus 5% of line voltage. Refrigerant charge sufficient 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. HACR type circuit breaker or fuse. a Refer to National or Canadian Electrical Code manual to determine wire, fuse and disconnect size requirements. ° Crankcase Heater and Freezestat are recommended with Low Ambient Kit. MI-14XC1 - 1.5 to 5 Ton Air Conditioner / Page 7 SPECIFICATIONS General Model No. All Regions Data Southeast and North Regions Nominal Tonnage ML14XC1-042 ML14XC1-047 ML14XC1-048 ML14XC1-059 ML14XC1-060 ML14XC1SO42 - - - - - - - - - --- 3.5 4 4 5 5 Indoor Unit Expansion Valve (TXV) (If needed) RFCIV Metering Orifice Usage 112,120 112,120 112,120 112,120 112,120 0.081 N/A 0.083 N/A 0.097 Connections Liquid line o.d. - in. (sweat) Suction line o.d. - in. 3/8 3/8 3/8 3/8 3/8 7/8 7/8 7/8 1-1/8 1-1/8 '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 Net face area Outer coil Coil sq. ft. Inner coil 21.00 22.17 21.00 29.09 29.09 20.25 21.33 20.25 28.16 28.16 Tube diameter - in. Number of rows Fins per inch 5/16 5/16 5/16 5/16 5/16 2 2 2 2 2 22 22 22 22 22 Outdoor Diameter - in. Fan Number of blades Motor hp Cfm Rpm Watts 22 26 22 26 26 3 4 4 4 4 1/6 1/3 1/4 1/3 1/3 3050 4400 3600 4550 4550 825 825 825 820 825 190 310 310 215 310 Shipping Data - lbs. 1 package 211 231 218 253 267 ELECTRICAL DATA Line voltage data - 60 Hz - 1 ph 2 Maximum overcurrent protection (MOCP) amps s Minimum circuit ampacity (MCA) 208/230V 208/230V 208/230V 208/230V 208/230V 40 35 40 45 50 23.4 21.9 24.2 28.8 29.6 Compressor Rated load amps Locked rotor amps Power factor 17.9 16.1 18 20.8 22.2 112 105.5 117 127.1 127.9 0.96 0.98 0.96 0.98 0.98 Condenser Full load amps Fan Motor Locked rotor amps 1 1.8 1.7 2.8 1.8 1.9 2.9 3.2 - - - 2.9 CONTROLS - ORDER SEPARATELY iComfoW M30 Smart Wi-Fi Thermostat 15Z69 Remote Outdoor Temperature Sensor X2658 OPTIONAL ACCESSORIES - ORDER SEPARATELY Compressor Crankcase Heater 93M04 Factory Compressor Hard Copeland 1OJ42 Start Kit LG 88M91 Compressor Low Ambient Cut -Off Switch 45F08 Compressor Sound Cover 18J42 Compressor Time -Off Control 47J27 Freezestat 3/8 in. tubing 93G35 5/8 in. tubing 5OA93 Indoor Blower Off Delay Relay 58M81 Loss of Charge Switch Kit 84M23 ° Low Ambient Kit (Fan Cycling) 34M72 68M04 Refrigerant Line L15-65-30, L15-65-40, Sets L15-65-50 Field Fabricate Unit Stand -Off Kit 94J45 NOTE - Extremes of operating range are plus 10% and minus 5% of line voltage. Refrigerant charge sufficient 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. 2 HACR type circuit breaker or fuse. a Refer to National or Canadian Electrical Code manual to determine wire, fuse and disconnect size requirements. Crankcase Heater and Freezestat are recommended with Low Ambient Kit. ML14XC1 - 1.5 to 5 Ton Air Conditioner / Page 8 DIMENSIONS - UNIT INLET AIR INLET AIR INLET 4 AIR TOP VIEW 4-3/8 4-3/8 (111) 1.*— t (111) 4-3/8 (111) ) /o \ J OPTIONAL UNIT INLET STAND-OFF KIT (4) MPRESS (Field Installed) C � ¢ q)R AIR COIL DRAIN OUTLETS/ (Around perimeter of base) SUCTION LINE 6-3/8 \ CONNECTION (162) o LIQUID LINE CONNECTION 6-3/8 4-3/8 (162) (111) TOP VIEW BASE SECTION ELECTRICAL INLETS W 2 (51) SIDE VIEW A OUTDOOR t DISCHARGE AIR COIL F COMPRESS SUCTION A LIQUID LI CONNECTI 2 OPTIONAL UNIT SIDE VIEW STANDOFF KIT (4) (FIELD INSTALLED) 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 4-318 (111) 4-3/8 (111) ML14XC1 - 1.5 to 5 Ton Air Conditioner / Page 9 FIELD WIRING INSTALLATION CLEARANCES DISCONNECT I SWITCH I t-(ByOthers) J LENNOX AIR CONDITIONER r THERMOSTAT I r DI SWITCH CT I (Optional) I (gy thers) t------d t- B -O-�-d LENNOX HEATING UNIT OR AIR HANDLER UNIT 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. SOUND DATA F See NOTE See NOTES :S .JI See NOTES BOX / 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 final 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. 1 Unit Model Octave Band Sound Power Levels dBA, re 10-12 Watts Center Frequency - HZ 1 Sound Rating Number (dBA) 2 Estimated Sound Pressure Level at Distance From Unit (dBA at distance in ft.) 125 250 500 1000 2000 4000 8000 3 5 10 15 50 018 53.0 58.5 66.5 69.5 65.0 62.5 54.5 73 66 61 55 52 41 024 56.0 66.0 72.0 71.0 67.0 63.0 56.5 76 69 64 58 55 44 030 55.0 64.5 70.5 72.5 67.5 61.0 54.0 76 69 64 58 55 44 036 58.0 67.5 71.5 70.5 66.5 61.5 55.0 76 69 64 58 55 44 041 56.5 64.0 70.0 69.0 66.0 62.5 56.0 74 67 62 56 53 42 042 56.0 65.0 71.0 71.5 67.5 62.0 55.0 76 69 64 58 55 44 047 61.5 71.5 76.5 75.5 71.5 65.5 56.5 80 73 68 62 59 48 048 61.5 68.0 73.5 72.5 69.0 64.0 56.5 78 71 66 60 57 46 059 62.0 69.5 73.0 71.0 69.0 63.5 55.0 77 70 65 59 56 45 060 1 63.5 1 70.0 1 75.0 1 75.0 1 70.5 68.0 61.0 80 73 68 62 59 48 NOTE - the octave sound power data does not include tonal correction. Tested according to AHRI Standard 270-2008 test conditions. 2 Estimated sound pressure level at distance based on AHRI Standard 275-2010 method for equipment located on the ground, roof, or on side of building wall with no adjacent reflective surface within 9.8 feet. Sound pressure levels will increase based on changes to assumptions. For other applications, refer to AHRI Standard 275. ML14XC1 - 1.5 to 5 Ton Air Conditioner / Page 10 TXV/ORIFICE USAGE Use this table for C35, CH23, CH35 and CR33 Field Installed TXV/Orifice Match -Ups. Model Refrigerant Metering Orifice (RFC) Thermal Expansion Valve (TXV) Order No. Orifice Size 018 1OW94 0.052 12.118 024 1OW97 0.060 12.118 030 11 W00 0.067 12J18 036 11 W01 0.071 12.119 041 N/A N/A 12J20 042 11 W06 0.081 12J20 047 N/A N/A 12J20 048 11 W07 0.083 12J20 059 N/A N/A 12J20 060 1OM13 0.097 12.120 CX35 and CHX35 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 by size. The correct TXV must be ordered separately and field installed. C35 and CH35 coils - Use the RFC orifice shipped with the outdoor unit or replace the factory installed RFC orifice with the expansion valve listed. CR33 and CH23 coils - Use the RFC orifice shipped with the outdoor unit or use the expansion valve listed. TXV SUBSTITUTION A general guide for replacing the factory installed TXV if the indoor unit (coil/air handler) is larger than the outdoor unit. Outdoor Unit Indoor Unit TXV Furnished TXV Replacement Size Tons Size Tons 024 2 38 3.5 12J19 12J18 024 2 42 3.5 12J20 12J18 024 2 48 4 12.120 12J18 024 2 49 4 12J20 12J18 030 2.5 38 3.5 12J19 12J18 030 2.5 42 3.5 12J20 12J18 030 2.5 43 3.5 12J20 12J18 030 2.5 44/48 4 12J20 12J18 030 2.5 48 4 12J20 12J18 030 2.5 50/60 4 12J20 12J18 TXV Ranges: 12J18 - 1.5 to 2.5 ton systems - Use on 2.5 ton and lower systems. 12J19 - 3 ton systems - Use down to 2 ton systems. 12J20 - 3.5 to 5 ton systems - Use down to 3 ton systems. 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. ML14XC1 - 1.5 to 5 Ton Air Conditioner / Page 11 REVISIONS Sections Approvals LENNOX Description of Change Added ENERGY STAR® certification. A **HMI /MEMBER COMPANr ntertek Visit us at www.Lennox.com For the latest technical information, www.LennoxPros.com Contact us at 1-800-4-LENNOX NOTE - Due to Lennox' ongoing commitment to quality, Specifications, 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 qualified installer and servicing agency. ©2020 Lennox Industries, Inc.