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From inside (document excerpt):
24ABS3 Baset 13 Series Air Conditioner 1 & 3 Phase 1 1/2 to 5 Nominal Tons (Sizes 18 to 60) Product Data INDUSTRY LEADING FEATURES / BENEFITS Efficiency S 13 SEER/11 EER (Nominal) S Microtube Technologyt refrigeration system S Indoor air quality accessories available Sound S Sound level as low as 76 dBA S As low as 74 dBA with optional accessory sound hood Comfort S System supports Thermidistatt or standard thermostat controls Reliability S Front–seating service valves S Scroll compressor S Internal pressure relief valve S Internal thermal overload S Filter drier S Balanced refrigeration system for maximum reliability Durability WeatherArmort protection package: As an Energy Starr Partner, Carrier Corporation has determined that this product meets the Energy Starr guidelines for energy efficiency.
Refer to the combination ratings in the Product Data for system combinations that meet Energy Starr guidelines. NOTE: Ratings contained in this document are subject to change at any time. Always refer to the AHRI directory (www.ahridirectory.org) for the most up- -date ratings -toinformation. S Solid, durable sheet metal construction S Wire coil guard S Baked–on, complete outer coverage, powder paint Applications S Long–line — up to 250 feet (76.20 m) total equivalent length, up to 200 feet (60.96 m) condenser above evaporator, or up to 60 ft. (18.28 m) evaporator above condenser (See Longline Guide for more information.) S Low ambient (down to -20_F/-28.9_C) with accessory kit Warranty Single Phase 5-year limited parts warranty Three Phase S 5-year limited compressor warranty 5-year limited compressor warranty 1-year limited parts warranty MODEL NUMBER NOMENCLATURE 1 N 2 2 N 4 3 A A Product Family A=RES AC 4 A B Tier B=Base 5 A/N S Major Series S=R 22 6 N 3 SEER 3=13 SEER 7 N 3 8 N 6 9 A/N A Variations A=Standard G=Dense Coil Guard 10 A/N 0 Open 0=Not Defined 11 A/N 0 Open 0=Not Defined 12 N 3 Voltage 3=208/230 1 5=208/230 3 6=460/3 1 = 575/3 13 N 0 Series 0= Original Series Product Series 24=AC Cooling Capacity ISO 9001:2000 REGISTERED 24ABS3 This product has been designed and manufactured to meet Energy Star® criteria for energy efficiency when matched with appropriate coil components. However, proper refrigerant charge and proper air flow are critical to achieve rated capacity and efficiency. Installation of this product should follow all manufacturing refrigerant charging and air flow instructions. Failure to confirm proper charge and air flow may reduce energy efficiency and shorten equipment life. STANDARD FEATURES Feature Maximum SEER Scroll Compressor Wire Coil Guard Field Installed Filter Drier Front Seating Service Valves Internal Pressure Relief Valve Internal Thermal Overload Long Line capability Low Ambient capability