13ACX 1.5-5 TON AIR CONDITIONERS AIR CONDITIONERS …

1 AIR CONDITIONERS . 13 ACX. MERIT Series R-410A. Bulletin No. 210739. P R O D U C T S P E C I F I C AT I O N S November 2017. Supersedes August 2017. SEER up to to 5 Tons Cooling Capacity - 17,500 to 59,000 Btuh MODEL NUMBER IDENTIFICATION. 13 AC x n 024 - 230 - 17. Nominal SEER Minor Revision Number Unit Type Voltage AC = Air Conditioner 230 = 208/230V-1phase-60hz Refrigerant X = R-410A Nominal Cooling Capacity 018 = tons 024 = 2 tons 030 = tons Regional Standards 036 = 3 tons N = North Region 042 = tons 048 = 4 tons 060 = 5 tons FEATURES. CONTENTS. AHRI System Matches - North 10 E. 7. Electrical 6 B. 2. Field 8. Installation 8. Model Number 1. Optional 6 C. Sound Data .. 8. 6. D. TXV 9. F. WARRANTY APPLICATIONS. SEER up to Compressor - limited warranty for five years in residential installations and five years in non-residential through 5 ton.

2 Installations. Single-phase power supply. All other covered components - five years in Sound levels as low as 76 dB. residential installations and one year in non-residential Vertical air discharge allows concealment behind shrubs installations. at grade level or out of sight on a roof. Refer to Lennox Equipment Limited Warranty certificate Matching add-on furnace indoor coils or air handlers included with unit for specific details. provide a wide range of cooling capacities and APPROVALS applications. See AHRI System Matches. AHRI Certified to AHRI Standard 210/240-2008. See Indoor Coils and Air Handlers sections for data. Sound rated in Lennox reverberant sound test room Units shipped completely factory assembled, piped and in Accordance with test conditions included in AHRI wired.

3 Each unit test operated at the factory ensuring Standard 270-2008. proper operation. Tested in the Lennox Research Laboratory Installer must set air conditioner, connect refrigerant environmental test room. lines and make electrical connections to complete job. Rated according to Department of Energy (DOE). test procedures. Region specific models meet the minimum efficiency requirements for 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 certified for the and Canada. ISO 9001 Registered Manufacturing Quality System. For expanded ratings, see 13 ACX - to 5 Ton Air Conditioner / Page 2. FEATURES.

4 REFRIGERATION SYSTEM Refrigerant Flow Control R-410A Refrigerant Units applicable to expansion valve systems or RFC. Non-chlorine, ozone friendly, R-410A. systems when matched with specific indoor coils. Unit pre-charged with refrigerant. RFCIV: See Specification table. Accurately meters refrigerant in system. Refrigerant control RFCIV METERING SYSTEM. B Condenser Fan is accomplished ORIFICE BODY RFCIV. Direct drive fan moves large air volumes uniformly by exact sizing of (On Coil). ORIFICE. through entire condenser coil for high refrigerant cooling refrigerant metering capacity. orifice. LIQUID. Vertical air discharge minimizes operating sounds and The principle O RING. LINE. eliminates damage to lawn and shrubs. involves matching LIQUID.

5 Fan motor has sleeve bearings and is inherently indoor coil with LINE SCREEN. protected. proper bore size of SEAL. Motor totally enclosed for maximum protection from orifice in metering NUT SWEAT. CONNECTION. weather, dust and corrosion. device. Rain shield on motor provides additional protection from Equalizes pressure shortly after compressor stops, unit moisture. starts unloaded, eliminating need for additional controls. Louvered steel top fan guard furnished as standard. Optional Accessories Fan service access accomplished by removal of top Expansion Valve Kits panel. Must be ordered extra and field installed on certain C Copper Tube/Enhanced Fin Coil indoor units. See TXV Usage Table on Page 9. Lennox designed and fabricated coil.

6 Chatleff-style fittings. Ripple-edged aluminum fins. Freezestat Copper tube construction. Installs on or near the vapor line of the indoor coil or on Lanced fins provide maximum exposure of fin surface to the suction line. air stream resulting in excellent heat transfer. Senses suction line temperature and cycles the Fin collars grip tubing for maximum contact area. compressor off when suction line temperature falls Flared shoulder tubing connections/silver soldering below it's setpoint. construction. Opens at 29 F and closes at 58 F. Coil is factory tested under high pressure to ensure Loss of Charge Switch Kit leakproof construction. Helps protect the compressor from damage due low Steel louvered panels provide complete coil protection.

7 Refrigerant charge conditions. Panels can be completely removed for servicing. SPST, normally-closed switch, automatic reset switch mounted on liquid line. High Capacity Liquid Line Drier Furnished with unit for field installation. Refrigerant Line Kits Approved for use with R-410A systems. Refrigerant lines (suction & liquid) are shipped Traps any moisture or dirt that could contaminate the refrigeration clean. Lines are cleaned, dried, refrigerant system. pressurized and sealed at factory. Suction line fully insulated. High Pressure Switch Lines are stubbed at both ends. Shuts off unit if abnormal operating conditions cause the discharge pressure to rise above setting. Protects compressor from excessive condensing pressure.

8 Automatic reset. 13 ACX - to 5 Ton Air Conditioner / Page 3. FEATURES. COMPRESSOR CONTROLS. D Scroll Compressor Optional Accessories Compressor features high efficiency with uniform suction Compressor Hard Start Kit flow, constant discharge flow, high Single-phase units are equipped with a PSC. volumetric efficiency and quiet compressor motor. This type of motor normally doesn't operation. need a potential relay and start capacitor. Compressor consists of two In conditions such as low voltage, this kit may be involute spiral scrolls matched required to increase the compressor starting torque. together to generate a series of Compressor Low Ambient Cut-Off Switch crescent shaped gas pockets Non-adjustable switch (low ambient cut-out) prevents between them.

9 Compressor operation when outdoor temperature is During compression, one scroll below 35 F. remains stationary while the other scroll orbits around it. Compressor Time-Off Control Kit prevents compressor short-cycling and allows time Gas is drawn into the outer pocket, the pocket is sealed for suction and discharge pressure to equalize. as the scroll rotates. Permits compressor start-up in an unloaded condition. As the spiral movement continues, gas pockets are pushed to the center of the scrolls. Volume between the Automatic reset with 5 minute delay between pockets is simultaneously reduced. compressor shut-off and start-up. When the pocket reaches the center, gas is now at high Indoor Blower Off Delay Relay pressure and is forced out of a port located in the center Delays the indoor blower-off time during the cooling of the fixed scrolls.

10 Cycle. During compression, several pockets are compressed See AHRI System Matches for usage. simultaneously resulting in a smooth continuous compression cycle. Low Ambient Kit Continuous flank contact, maintained by centrifugal Air CONDITIONERS operate satisfactorily in the cooling force, minimizes gas leakage and maximizes efficiency. mode down to 45 F outdoor air temperature without any additional controls. Scroll compressor is tolerant to the effects of slugging and contaminants. If this occurs, scrolls separate, Kit can be added in the field enabling unit to operate allowing liquid or contaminants to to be worked toward properly down to 30 F in the cooling mode. the center and discharged. Crankcase heater and freezestat should be installed on Low gas pulses during compression reduces compressors equipped with a Low Ambient Kit.