Carrier CAS072 Installation, Start-up And Service Instructions Manual

6 Specifications subject to change without notice. CAS-072-153-01SI Rev. AINSTALLATIONJobsite SurveyComplete the following checks before installation.1. Consult local building codes and the NEC (National Elec-trical Code) ANSI/NFPA 70 for special installationrequirements.2. Determine unit location (from project plans) or selectunit location.3. Check for possible overhead obstructions which mayinterfere with unit lifting or rigging.Step 1 — Plan for Unit LocationThe CAS units are designed and approved for outdoor in-stallation only. Do not locate these units indoors. Do not addducting to unit fan system.Select a location for the unit and its support system (pad,rails or other) that provides for the minimum clearances re-quired for safety. This includes the clearance to combustiblesurfaces, unit performance and service access below,around and above unit as specified in unit drawings. SeeFig. 3.NOTE: Local codes may require different clearances thanspecified in Fig. 3. It is the responsibility of installers to beknowledgeable in local codes and to modify the recom-mended clearances to satisfy local codes.NOTE: Consider also the effect of adjacent units on airflowperformance and control box safety clearance.Do not install the outdoor unit in an area where fresh airsupply to the outdoor coil may be restricted or when recircu-lation from the condenser fan discharge is possible. Do notlocate the unit in a well or next to high walls.Fig. 3 — Service Clearance Dimensional DrawingEvaluate the path and required line length for interconnect-ing refrigeration piping, including suction riser requirements(outdoor unit above indoor unit) and liquid line lift (outdoorunit below indoor unit). Relocate sections to minimize thelength of interconnecting tubing.Although unit is weatherproof, avoid locations that permitwater from higher level runoff and overhangs to fall onto theunit.Table 6 — CAS123/153 Two Circuit Models – Physical DataUNIT CAS123 CAS153NOMINAL CAPACITY (tons) 10 12.5OPERATING WEIGHT (lb) 516 654Refrigeration System# Circuits / # Comp. / Type 2 / 2 / Scroll 2 / 2 / ScrollRefrigerant Type R-410A R-410AR-410A Shipping Charge A/B (lb) 9.0 / 9.0 9.0 / 9.0System Charge w/ Fan Coil aNOTE(S):a Approximate system charge with about 25 ft piping of sizes indicated with matched F*S/H or F*X.11.9 / 13.1 16.2 / 16.1Metering Device TXV TXVHigh-Press. Trip / Reset (psig) 630 / 505 630 / 505Low-Press. Trip / Reset (psig) 54 / 117 54 / 117CompressorOil Charge A/B (oz) 42 / 42 56 / 56Speed (rpm, 60 Hz) 3500 3500Condenser CoilMaterial Al/Cu Al/CuCoil Type RTPF RTPFRows / FPI 2 / 17 3 / 17Total Face Area (ft 2 ) 31.8 31.8Condenser Fan / MotorQty / Motor Drive Type 2 / direct 2 / directMotor HP / RPM 1/4 / 1100 1/4 / 1100Fan Diameter (in.) 22 22Nominal Airflow (cfm) 6,000 6,000Watts (total) 610 610Piping ConnectionsQty / Suction (in. ODS) 2 / 1 1/8 2 / 1 3/8Qty / Liquid (in. ODS) 2 / 3/8 2 / 1/2IMPORTANT: DO NOT BURY REFRIGERANT LINES.REAR:Min 18" (457 mm)required for serviceRIGHT:Min 18" (457 mm)required for serviceLEFT:Min 18" (457 mm)required for serviceFRONT:42” (1067 mm)required for serviceNOTE: Observe requirements for 39" (914 mm) operatingclearance on either Left or Rear coil opening.