Carrier CAS072 Installation, Start-up And Service Instructions Manual

CAS-072-153-01SI Rev. A Specifications subject to change without notice. 3The Model CAS123/153 is a dual-circuit unit design that re-quires two sets of refrigeration piping between the outdoorunit and the evaporator coil (or coils). This model can onlybe connected to an evaporator coil that has two refrigerationcircuits (or to two separate evaporator coils). The ModelCAS123/153 CANNOT be connected to a single-circuitevaporator coil. The Model CAS123/153 CANNOT be field-converted to a single-circuit design. See Table 3.Before unpacking this new CAS model, compare the evapo-rator coil design to the CAS model.Matching CAS Model to Evaporator CoilThe CAS072/091/121/151 units have a single-circuit de-sign, requiring one set of refrigeration piping. This modelcan be connected to an evaporator coil with one circuit orwith two circuits (by manifolding the evaporator connectionsinto a single piping system).Fig. 1 — Model Number NomenclatureTable 2 — CAS (Dual Circuit) with F*S/H or F*XMODEL NUMBERS FULL LOAD AIRFLOW (CFM)CAS123 — F*X120 4000CAS153 — F*S/H150 4400Table 3 — Evaporator Coil ConnectionsEVAPORATOR COILHASCONNECT TOMODEL NOTESSingle Circuit 072/091/121/151ONLY —Two Circuits072/091/121/151Manifold evaporatorcircuits into single pipingsystem.123/153 Use two separate pipingsystemsMODEL SERIES C A S 0 9 0 H G A 0 A 0 0 APosition Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14TypeVoltageRefrigerant OptionsCoil OptionsA = NoneC = Non-Fused Disconnect0 = Electro-Mechanical Controls (standard)0 = Not UsedBase Unit ControlsA = Al/CuB = Precoat Al/CuC = E−Coat Al/CuE = Cu/CuM = Al/Cu with Louvered Hail GuardsN = Precoat Al/Cu with Louvered Hail GuardsP = E−Coat Al/Cu with Louvered Hail GuardsR = Cu/Cu with Louvered Hail GuardsNot UsedA = StandardB = LTL (includes full corrugated sleeve wrapped around unit perimeter and full corrugated top cover) PackagingEfficiency072 = 6 Tons (2 stages)091 = 7.5 Tons (2 stages)121 = 10 Tons (2 stages)123 = 10 Tons (3 stages)151 = 12.5 Tons (2 stages)153 = 12.5 Tons (3 stages)H = 208/230-3-60L = 460-3-60S = 575-3-600 = None1 = Un-powered Convenience OutletG = Single Circuit / Dual Stage (072/091 only)H = Single Circuit / Dual Stage with Low Ambient Controller (072/091 only)M = Single Circuit / Dual Stage (121/151 only)1N = Single Circuit with Low Ambient Controller (121/151 only)1T = Dual Circuit (123/153 only)U = Dual Circuit with Low Ambient Controller (123/153 only)C = R-410A Condensing UnitA = Air Conditioning (Cooling Only)S= Standard EfficiencyNominal Cooling CapacityService OptionsElectrical Options1 CAS121/151 models with M/N in the 8th digit meet Department of Energy (DOE) 2023 IEER requirements.