Heating Cycle Operation Check Chart (R-22) - 50Hq, Vq018; Cooling Cycle Charging Chart (R-22) - 50Hq, Vq027; Cooling Cycle Charging Chart (R-22) - 50Hq, Vq022; Heating Cycle Operation Check Chart (R-22) - 50Hq, Vq027 - Carrier 50HQ Installation, Start-Up And Service Instructions Manual