CCA7, TCA7, HCA7, CCA9, TCA9, HCA9 924-60 17 & 19 SEER R-410A 1 Phase 2-Stage Communicating Installation Instructions CCA7, TCA7, HCA7, CCA9, TCA9, HCA9 924-60 17 & 19 SEER R-410A 1 Phase 2-Stage Communicating Installation Instructions