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210846.pdfSEER up to 18.50 HSPF up to 10.20 2 to 5 Tons Cooling Capacity - 23,200 to 57,000 Btuh Heating Capacity - 21,200 to 55,500 Btuh MODEL NUMBER IDENTIFICATION HEAT PUMP OUTDOOR UNITS SL18XP1 DAVE LENNOX SIGNATURE® COLLECTION R-410A - SilentComfort™ Technology Bulletin No. 210846 February 2019 Supersedes January 2018 PRODUCT SPECIFICATIONS Nominal Cooling Capacity 024 = 2 tons 030 = 2.5 tons 036 = 3 tons 042 = 3.5 tons 048 = 4 tons 060 = 5 tons SL 18 X P 1 - 036 - 230 A 01 Nominal SEER 18 = 18 SEER Refrigerant Type X = R-410A Revision Level Voltage 230 = 208/230V-1 phase-60hz Product Tier SL = Dave Lennox Signature® Collection Unit Type P = Heat Pump Outdoor Unit Cooling Stages 1 = Single Stage Compressor Ratings Revision Level SL18XP1 2-5 TON HEAT PUMPS SL18XP1 - 2 to 5 Ton Heat Pump / Page 2 FEATURES WARRANTY Compressor - Limited warranty for ten years in residential installations and five years in non-residential installations. All other covered components - Limited warranty for ten years in residential installations and one year in non-residential installations. Refer to Lennox Equipment Limited Warranty certificate included with unit for specific details. APPROVALS AHRI Certified to AHRI Standard 210/240-2008. Tested in the Lennox Research Laboratory environmental test room. Rated according to U.S. Department of Energy (DOE) test procedures. Heat Pump units and components within bonded for grounding to meet safety standards for servicing required by ETL, NEC and CEC. Units are ETL certified for the U.S. and Canada. ISO 9001 Registered Manufacturing Quality System. For expanded ratings, see www.LennoxPros.com. Energy Star® certified units are designed to use less energy, help save money on utility bills, and help protect the environment. Many Lennox home comfort systems meet Energy Star requirements when used with matching components. APPLICATIONS 2 through 5 ton. Sound levels as low as 67 dB. Single phase power supply. Vertical air discharge allows concealment behind shrubs at grade level or out of sight on a roof. Designed for applications with remotely located indoor air handler units or gas furnaces with indoor add-on coils. When heat pumps are used with gas furnaces, a dual-fuel compatible thermostat or a zone control system with dual-fuel capabilities must be used (order separately). See Indoor Coils and Air Handlers sections for indoor unit data. Units shipped completely factory assembled, piped, and wired. Each unit is test operated at the factory insuring proper operation. Installer must set outdoor unit, connect refrigerant lines, and make electrical connections to complete job. J H I FE G D C B L K M CONTENTS Dimensions ................................................................10 Electrical Data..............................................................8 Features.......................................................................2 Field Wiring ..................................................................9 Installation Clearances ................................................9 Model Number Identification ........................................1 Optional Accessories ...................................................8 Sound Data ..................................................................9 Specifications...............................................................8 TXV Usage ................................................................11 NOTE! For the latest AHRI System Matches please see the Residential Matchup Tool at www.LennoxPros. com or see the separate document AHRI Heat Pump Matches that contains all outdoor unit matches. SL18XP1 - 2 to 5 Ton Heat Pump / Page 3 FEATURES REFRIGERATION SYSTEM R-410A Refrigerant Non-chlorine, ozone friendly, R-410A. Unit is factory pre-charged with refrigerant. Total system refrigerant charge is dependant on outdoor unit size, indoor unit size and refrigerant line length. Refer to the unit-mounted charging sticker to determine correct amount of charge required. Outdoor Coil Fan with SilentComfort™ Technology Specially-designed, SilentComfort fan guard uses Passive Vortex Suppression to reduce air noise. Corrosion-resistant PVC (polyvinyl chloride) coated steel wire. Specially designed fan blades reduce operating sound levels. 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 is inherently protected. Motor totally enclosed for maximum protection from weather, dust and corrosion. Fan service access accomplished by removal of fan guard. Quantum™ Coil Enhanced aluminum alloy tube/enhanced fin coil for superior corrosion resistance. Lennox designed and fabricated coil. Ripple-edged aluminum fins. Aluminum tube construction. Lanced fins provide maximum exposure of fin surface to air stream resulting in excellent heat transfer. Fin collars grip tubing for maximum contact area. Flared shoulder tubing connections. Coil is factory tested under high pressure to insure leakproof construction. Entire coil is accessible for cleaning. 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. Low Pressure Switch Shuts off unit if suction pressure falls below setting. Provides loss of charge and freeze-up protection. Automatic reset. AB C D E Expansion Valve - Outdoor Unit Designed and sized specifically for use in heat pump system. Sensing bulb is located on the suction line between the coil and the reversing valve thus sensing evaporator out temperature in the heat cycle. Factory installed and piped. Reversing Valve 4-way interchange reversing valve effects a rapid change in direction of refrigerant flow resulting in quick changeover from cooling to heating and vice versa. Valve operates on pressure differential between outdoor unit and indoor unit of the system. Factory installed. Hi-Capacity Liquid Line Drier Factory installed in the liquid line, the drier traps moisture or dirt that could contaminate the refrigerant system. 100% molecular-sieve bead type drier. Optional Accessories Check/Expansion Valve Kits Must be ordered and field installed on certain evaporator units. See TXV Usage table. Chatleff style fitting. Freezestat Installs on or near the discharge line of the evaporator 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. Mild Weather Kit For heat pump heating operation in mild weather climates. A pressure switch automatically cycles the outdoor fan motor when the head pressure rises above normal operating conditions. Refrigerant Line Kits Refrigerant lines (suction & liquid) are shipped refrigeration clean. Lines are cleaned, dried, pressurized, and sealed at factory. Suction line fully insulated. L15 lines are stubbed at both ends. See Optional Accessories table for selection. Not available for -060 model and must be field fabricated. F G H SL18XP1 - 2 to 5 Ton Heat Pump / Page 4 COMPRESSOR Scroll Compressor Compressor features high efficiency with uniform suction flow, constant discharge flow, high volumetric efficiency 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 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. Scroll 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. 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. Factory installed crankcase heater. Crankcase Heater Crankcase heater prevents migration of liquid refrigerant into compressor and ensures proper compressor lubrication. Compressor Sound Dampening System A polyethylene compressor cover containing a 2-inch thick batt of fiberglass insulation for better sound dampening. All open edges are sealed with a one-inch wide hook and loop fastening tape. I J CONTROLS iComfort® Communicating Control Advanced control communicates information about various operating parameters in the heat pump outdoor unit to the optional iComfort® Communicating Thermostat to constantly maintain the highest level of comfort, performance and efficiency available. Connections for connecting a conventional heat pump thermostat are also provided. Auto Configuration - On start-up the control automatically sends a description of the unit to the optional iComfort® Communicating Thermostat to automatically configure the number of stages and features available. Seven-Segment Display Seven-segment display shows information about outdoor unit type and capacity and also displays alerts for common fault conditions (electrical and mechanical). Control also features: • Compressor anti-short cycle delay (5 minutes). • Compressor defrost shift delay - Adjustable 0 (factory) or 30 seconds. • High and low pressure switch monitoring with provisions for lockout. • Five-Strike lockout protection protects compressor. • Outdoor air temperature and sensor monitoring. • Fan cycling operates outdoor fan for 5 minutes when outdoor ambient air temperature is between 15°F and 35°F and the compressor has been off for 25 to 30 minutes. Reduces the potential for ice buildup on the fan orifice ring. User selectable 5 minutes on or off (default setting). • Lennox Humiditrol® Whole Home Dehumidification System (EDA) compatible. • EEPROM storage of all local configurations. Outdoor Air Temperature Sensor Used with iComfort® Communicating Thermostats. Sensor allows thermostat to display outdoor temperature. Sensor is auto-detected when connected to thermostat. Also used for dual-fuel and Humiditrol® applications. K FEATURES SL18XP1 - 2 to 5 Ton Heat Pump / Page 5 CONTROLS (continued) IntelliFrost™ Adaptive Defrost Control Demand defrost control uses outdoor ambient temperature, coil temperature, and compressor run-time input to initiate the defrost cycle, which prevents frost build-up on the outdoor coils. Defrost control jumper settings are 50°F, 70°F, 90°F and MAX. The default setting is 50°F. Auto ON and Auto OFF defrost controls are based on the control’s jumper setting. • If Auto OFF is set, the defrost cycle will run based on a fixed jumper setting of 50, 70, 90°F or MAX. • If Auto ON is set, the defrost cycle will run based on the following: Initial Unit Power-up or Cooling Demand • The defrost cycle will run based on the jumper setting after the unit’s first power-up or first defrost cooling demand. Accumulated Heating Run-Time Between Defrost Cycles • If heating runtime is eual or less than 50 minutes, the defrost control setting will increase at the next defrost cycle based on the jumper setting. Example: If the jumper setting is 50 or 70°F, the next defrost cycle will run at 90°F. If jumper setting is 90°F or MAX, the next defrost cycle will run at MAX. • If heating runtime is more than 60 minutes between defrost cycles and jumper setting is 50, 70 or 90°F, the defrost control setting for the next defrost cycle will run based on the jumper setting. Example: If the jumper setting is MAX, the next defrost cycle will decrease to 90°F. • If MAX is set, the defrost cycle will always operate at the MAX setting when accumulated compressor OFF time is longer than 30 minutes and ambient temperature is less than 35°F. • If the ambient sensor temperature is higher than 40°F and the jumper is set to MAX, the defrost cycle will run at 90°F. If the jumper is set at 50, 70 or 90°F, the defrost cycle will run based on the jumper setting. Optional Accessories Compressor Hard Start Kit Single-phase units are equipped with a PSC compressor motor. This type of motor normally does not need a potential relay and start capacitor. In conditions such as low voltage, kit may be required to increase the compressor starting torque. Indoor Blower Off Delay Relay Delays the indoor blower-off time during the cooling cycle. Low Ambient Kit Outdoor units will operate in the cooling mode satisfactorily down to 45°F outdoor air temperature without any additional controls. Kit can be added in the field enabling unit to operate properly down to 30°F. A Freezestat should be installed on compressors equipped with a low ambient kit. A Compressor Low Ambient Cut-Off should be added to terminate compressor operation below recommended operating conditions. Monitor Kit - Service Light Contains ambient compensating thermistor and service light thermostat. For use with thermostats requiring input for indicator lights. Outdoor Thermostat Kit An outdoor thermostat can be used to lock out some of the electric heating elements on indoor units where two- stage control is applicable. Outdoor thermostat maintains the heating load on the low power input as long as possible before allowing the full power load to come on the line. Thermostat kit and mounting box must be ordered separately. FEATURES SL18XP1 - 2 to 5 Ton Heat Pump / Page 6 FEATURES CONTROLS (continued) Optional Accessories iComfort® S30 Ultra-Smart Thermostat (part of the iComfort® Residential Communicating Control System) The iComfort® S30 Thermostat recognizes and connects to all iComfort® Communicating products to automatically configure and control the heating/cooling system (based on user-specified settings) for the highest level of comfort, performance and efficiency. Also recognizes model and serial number information for iComfort® Communicating products to simplify system setup. Wi-Fi remote temperature monitoring and adjustment through a home wireless network for desktop PCs, laptops and apps for smartphones or tablets. Also displays service alerts and reminders. Dealer Dashboard features online real-time monitoring of installed iComfort® Communicating systems. A simple easy-to-use touchscreen allows complete system configuration. Scheduled maintenance alerts, system warnings and troubleshooting are also displayed on thermostat screen. Easy to read 7 in. high definition color display (measured diagonally). Apple HomeKit™ compatible. Control the S30 thermostat from an iPhone, iPad or iPod device and use Siri® voice commands. Amazon® Alexa-enabled, smart-home-compatible. Works with Amazon Echo, Echo Dot and Tap devices. Installer setup screens allow quick and simple system configuration without a manual, Installer can also run tests on complete system or individual components for easy maintenance and troubleshooting. Serial communications bus (RSBus), with less wiring than a conventional heating/cooling system, allows system communication. Uses 4-wire, 18-gauge standard thermostat wiring. Remote outdoor temperature sensor (furnished with outdoor unit) allows the thermostat to display outdoor temperature. Required in dual-fuel and Humiditrol® applications. High Definition Color Display, Mag-Mount, Smart Hub Controller, wallplate (for retrofit installations) furnished for easy installation. See the iComfort® S30 Thermostat Product Specifications bulletin in the Controls section for more information. iComfort Wi-Fi® Thermostat (part of the iComfort® Residential Communicating Control System) The iComfort Wi-Fi® Thermostat recognizes and connects to all iComfort® Communicating products to automatically configure and control the heating/cooling system (based on user-specified settings) for the highest level of comfort, performance and efficiency. Also recognizes model and serial number information for iComfort® Communicating products to simplify system setup. Wi-Fi remote temperature monitoring and adjustment through a home wireless network for desktop PCs, laptops and apps for smartphones or tablets. Also displays service alerts and reminders. Dealer Dashboard features online real-time monitoring of installed iComfort® Communicating systems. A simple easy-to-use touchscreen allows complete system configuration. Scheduled maintenance alerts, system warnings and troubleshooting are also displayed on thermostat screen. Easy to read 7-inch color screen (measured diagonally). Installer setup screens allow quick and simple system configuration without a manual, Installer can also run tests on complete system or individual components for easy maintenance and troubleshooting. Serial communications bus (RSBus), with less wiring than a conventional heating/cooling system, allows system communication. Uses 4-wire, 18-gauge standard thermostat wiring. Remote outdoor temperature sensor (furnished with outdoor unit) allows the thermostat to display outdoor temperature. Required in dual-fuel and Humiditrol® applications. See the iComfort Wi-Fi® Thermostat Product Specifications bulletin in the Controls section for more information. SL18XP1 - 2 to 5 Ton Heat Pump / Page 7 FEATURES CONTROLS (continued) Optional Accessories (continued) ComfortSense® 7500 Touchscreen Thermostat 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-use, menu driven thermostat with a back-lit, LCD touchscreen. See the ComfortSense® 7500 Product Specifications bulletin in the Controls section for more information. Remote Outdoor Temperature Sensor for ComfortSense® 7500 Thermostat Allows the thermostat to display outdoor temperature. Required in dual-fuel and Humiditrol® applications. Thermostat Thermostat is not furnished with unit. See Thermostat bulletins in Controls Section and Lennox Price Book for selection. CABINET Heavy-gauge steel construction Pre-painted cabinet finish. Control box is conveniently located with all controls factory wired. Large removable panel provides service access. Drainage holes are provided in base section for moisture removal. High density polyethylene unit support feet raise the unit off of the mounting surface, away from damaging moisture. PermaGuard™ Unit Base Durable zinc-coated base section resists rust and corrosion. SmartHinge™ Louvered Coil Protection Steel louvered panels provides complete coil protection. Panels are hinged to allow easy cleaning and servicing of coils. Panels may be completely removed. Interlocking tabs and slots assure tight fit on cabinet. Refrigerant Line Connections, Electrical Inlets and Service Valves Suction and liquid lines are located on corner of unit cabinet and are made with sweat connections. See dimension drawing. 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. Suction and liquid line service valves and gauge ports are located inside the cabinet. Refrigerant line connections and field wiring inlets are located in one central area of the cabinet. See dimension drawing. Optional Accessories Snow Guards For use in locations where the possibility of heavy snow or freezing rain accumulation may occur. Heavy gauge powder coated steel guard deflects snow and ice away from the outdoor fan and prevents build- up on the fan guard. L M SL18XP1 - 2 to 5 Ton Heat Pump / Page 8 SPECIFICATIONS General Data Model No.SL18XP1 -024 SL18XP1 -030 SL18XP1 -036 SL18XP1 -042 SL18XP1 -048 SL18XP1 -060 Nominal Tonnage 2 2.5 3 3.5 4 5 Connections (sweat) Liquid line (o.d.) - in.3/8 3/8 3/8 3/8 3/8 3/8 Vapor (Suction) line (o.d.) - in.3/4 3/4 7/8 7/8 7/8 1-1/8 Refrigerant 1 R-410A charge furnished 8 lbs. 6 oz.8 lbs. 10 oz.9 lbs. 14 oz.9 lbs. 11 oz.11 lbs. 0 oz.10 lbs. 5 oz. Outdoor Coil Net face area - sq. ft. Outer coil 20.73 20.73 23.33 23.33 27.21 27.21 Inner coil 20.08 20.08 22.60 22.60 26.36 26.36 Tube diameter - in.5/16 5/16 5/16 5/16 5/16 5/16 No. of rows 2 2 2 2 2 2 Fins per inch 22 22 22 22 22 22 Outdoor Fan Diameter - in.26 26 26 26 26 26 No. of blades 3 3 3 3 3 3 Motor hp 1/3 1/3 1/3 1/3 1/3 1/3 Cfm 2600 2800 3650 3650 4000 4300 Rpm 730 800 800 800 800 875 Watts 65 85 160 160 160 200 Shipping Data - lbs. 1 pkg.253 257 271 294 319 321 ELECTRICAL DATA Line voltage data - 60hz - 1 ph 208/230V 208/230V 208/230V 208/230V 208/230V 208/230V 2 Maximum overcurrent protection (amps)25 30 35 40 45 60 3 Minimum circuit ampacity 20.0 20.0 22.0 25.2 26.8 32.4 Compressor Rated load amps 10.9 13.5 15.4 17.9 19.2 23.7 Locked rotor amps 59.3 72.5 83.9 112.0 117.0 152.5 Power factor 0.98 0.98 0.98 0.97 0.97 0.98 Outdoor Fan Motor Full load amps 2.8 2.8 2.8 2.8 2.8 2.8 CONTROLS iComfort® S30 Thermostat 12U67 •••••• iComfort Wi-Fi® Thermostat 10F81 •••••• ComfortSense® 7500 Thermostat 13H14 •••••• Outdoor Temperature Sensor - (ComfortSense® 7500) X2658 •••••• 4 Discharge Air Temperature Sensor 88K38 •••••• OPTIONAL ACCESSORIES - ORDER SEPARATELY Compressor Hard Start Kit 88M91 •••••• Compressor Low Ambient Cut-Off 45F08 •••••• Freezestat 3/8 in. tubing 93G35 •••••• 5/8 in. tubing 50A93 •••••• 5 Low Ambient Kit 68M04 •••••• Indoor Blower Off Delay Relay 58M81 •••••• Mild Weather Kit 11B97 •••••• Monitor Kit - Service Light 76F53 •••••• Outdoor Thermostat Kit Thermostat 56A87 •••••• Mounting Box 31461 •••••• Refrigerant Line Sets L15-41-20 L15-41-40 L15-41-30 L15-41-50 •• L15-65-30 L15-65-40 L15-65-50 ••• Field Fabricate • 6 Snow Guards X8782 •••••• NOTE - Extremes of operating range are plus 10% and minus 5% of line voltage. 1 Refrigerant charge sufficient for 15 ft. length of refrigerant lines. 2 HACR type breaker or fuse. 3 Refer to National or Canadian Electrical Code manual to determine wire, fuse and disconnect size requirements. 4 Used with the iComfort® Communicating Thermostats for optional service diagnostics. 5 Compressor Low Ambient Cut-Off and Freezestat are recommended with Low Ambient Kit. 6 Adds 11-1/2 inches (292 mm) to unit height. SL18XP1 - 2 to 5 Ton Heat Pump / Page 9 SeeNotes SeeNotes SeeNotes SeeNotes Service INSTALLATION CLEARANCES DISCONNECTSWITCH(By Others) OPTIONALOUTDOORTHERMOSTAT LENNOXINDOOR UNIT OPTIONALELECTRICHEAT THERMOSTAT(Optional) LENNOXOUTDOORUNIT DISCONNECTSWITCH(By Others) A B CD A - Two Wire Power (see Electrical Data) B - Two or Three Wire Power (size to heater capacity) C - Twelve Wire Low Voltage 18 ga. minimum Fourteen Wire Low Voltage with Optional Outdoor Thermostat D - Eight Wire Low Voltage 18 ga. minimum - With Conventional Thermostat Ten Wire Low Voltage - With Conventional Thermostat and Optional Outdoor Thermostat Four Wire Low Voltage RSBus (not furnished) 18 ga. mini- mum - With iComfort® Communicating Thermostat NOTE - Field Wiring Not Furnished All wiring must conform to NEC or CEC and local electrical codes. NOTES: One of these three sides must be 36 in. (914 mm). One of the two remaining sides may be 12 in. (305 mm). The remaining side may be 6 in. (152 mm). Service Clearance − 30 in. (762 mm) 48 in. (1219 mm)clearance required on top of unit 24 in. (610 mm) required between two units FIELD WIRING SOUND DATA 1 Unit Model Octave Band Linear Sound Power Levels dB, re 10-12 Watts Center Frequency - HZ 1 Sound Rating Number (dB) ² Estimated Sound Pressure Level at Distance From Unit (dB at distance in ft.) 125 250 500 1000 2000 4000 8000 3 5 10 15 50 024 53 60.3 62.7 61.3 58.4 50.9 44.3 67 60 55 49 46 35 030 56 59.1 65 65.1 59.9 52.7 48.7 69 62 57 51 48 37 036 58.2 62.8 65.6 65.7 59.9 53.4 46.3 70 63 58 52 49 38 042 55.7 61.9 64.7 62.9 60.3 53.8 50.6 70 63 58 52 49 38 048 56.4 61 64.8 65.4 60.1 52.9 47.9 70 63 58 52 49 38 060 57.2 61.8 64.6 62.6 59.4 53.2 48.2 73 66 61 55 52 41 NOTE - the octave sound power data does not include tonal correction. 1 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. SL18XP1 - 2 to 5 Ton Heat Pump / Page 10 39-1/2 (1003) (Depth) 35-1/2 (902) (Width) 37 (940) -024-030 41 (1041) -036-042 47 (1194) -048-060 18-1/2 (470) 8 (203) 1 (25) 4-1/2 (114) LIQUID LINEINLET SUCTION LINEINLET ELECTRICAL INLET TOP VIEW WEIV SSECCAWEIV EDIS DISCHARGE AIR UNIT SUPPORT FEET TOP VIEW BASE SECTION (Large Base) 16-7/8 (429) 4-5/8 (117) 26-7/8 (683) 8-3/4 (222) 30-3/4 (781) 3-3/4(95) 3-1/8 (79) DIMENSIONS - INCHES (MM) SL18XP1 - 2 to 5 Ton Heat Pump / Page 11 TXV USAGE Model No.Order No. SL18XP1-024 12J18 SL18XP1-030 12J18 SL18XP1-036 12J19 SL18XP1-042 12J20 SL18XP1-048 12J20 SL18XP1-060 12J20 CX34 and CX38 upflow coils and all Lennox air handlers are shipped with a factory installed TXV. C33 and CH33 coils - Replace the factory installed orifice with the expansion valve listed. CR33 and CH23 - Use the expansion valve listed. MOST POPULAR MATCHES Outdoor Unit Model No. Indoor Unit Model No SL18XP1-024 CBX32MV-024/030 SL18XP1-030 CBX32MV-024/030 SL18XP1-036 CBX32MV-048 SL18XP1-042 CBX32MV-048 SL18XP1-048 CBX32MV-060 SL18XP1-060 CBX32MV-060 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 SUBSTITUTIONS Use this table to determine if the factory installed TXV in the indoor unit needs to be replaced. Model No.Indoor Coil Factory TXV Replacement TXV SL18XP1-030 CX34-43 12J20 12J18 SL18XP1-030 CX34-50/60 12J20 12J18 SL18XP1-030 CX38-43 12J20 12J18 SL18XP1-030 CX38-50/60 12J20 12J18 * CX34 and CX38 coils - 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. NOTE! For the latest AHRI System Matches please see the Residential Matchup Tool at www.LennoxPros. com or see the separate document AHRI Heat Pump Matches that contains all outdoor unit matches. 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. ©2019 Lennox Industries, Inc. REVISIONS Visit us at www.lennox.com For the latest technical information, www.LennoxPROs.com Contact us at 1-800-4-LENNOX REVISIONS Sections Description of Change Sound Data Added expanded sound data for Estimated Sound Pressure Level at Distance From Unit.