Single-phase J-IV and J-IVs Airstage VRF heat pump systems replace the J-II and J-IIs lines. The systems serve heating and cooling applications between 3- and 5-ton capacities. The air-to-air heat pumps feature expanded heating operation ranges, offering powerful heating capacity at an outdoor ambient temperature of minus 15 degrees Fahrenheit. Installers can connect up to 9 indoor units to each 3-ton condensing unit, 12 indoor units per 4-ton condensing unit, and 15 indoor units to each 5-ton condensing unit.
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