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From inside (document excerpt):
25VNA Infinityt Variable Speed Heat Pump with Greenspeedt Intelligence 2 to 5 Nominal Tons Product Data INDUSTRY LEADING FEATURES / BENEFITS Energy Efficiency S 18 – 20 SEER/12 – 13 HSPF (based on tested combinations) S Microtube Technologyt refrigeration system S Indoor air quality accessories available Sound S Sound level as low as 58 dBA in low speed (Silencer System II). Comfort S Variable speed compressor with capacity range from 40-100% S Air cooled Inverter variable speed drive — System requires Infinity Control with Greenspeed capability (SYSTXCCUID01- or SYSTXCCUIZ01-V -V) Reliability S Puronr refrigerant – environmentally sound, won’t deplete the ozone layer and low lifetime service cost.
S Front-seating service valves S Greenspeed Intelligence actively monitors critical system parameters S High pressure switch S Suction pressure transducer S Electronic expansion valve (EXV) for heating, TXV for cooling S Filter drier (field installed) S External Muffler (field installed) S Internal crankcase heater standard Carrier’s 25VNA with Greenspeedt Intelligence is a breakthrough product providing up to 13 HSPF heating efficiency and up to 20.5 SEER cooling efficiency. The variable speed capacity control results in strong heating capacity as the outdoor temperature drops resulting in less reliance on auxiliary heat. Lower speed operation, when needed in cooling, for enhanced comfort and dehumidification. This product has been designed and manufactured to meet Energy Starr criteria for energy efficiency when matched with appropriate coil components. 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. Flexibility and installation: S 2 control wires to outdoor unit Minimum and Maximum airflow adjustments Compressor Heating RPM control Hybrid Heatt dual fuel capable Durability WeatherArmort protection package: S Solid, Durable sheet metal construction S Steel louver coil guard S Baked-on, complete outer coverage, powder paint Applications S Long-line – up to 250 feet (76.2 m) total equivalent length, up to 200 feet (60.96 m) condenser above evaporator, or up to 80 ft. (24.38 m) evaporator above condenser (See Longline Guide for more information.) MODEL NUMBER NOMENCLATURE 1 N 2 Product Series 25 = HP 2 N 5 3 A V Product Family