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manual abstract
Read all installation instructions before starting installation. The 502A units are intended for indoor installation only. I. STEP 1 — RECEIVE AND INSPECT UNIT Unpack and check unit against shipping order. Inspect carefully for concealed shipping damage. If unit is damaged or incomplete, file claim with transportation company and advise Bryant immediately. II. STEP 2 — PROTECT UNIT FROM DAMAGE To maintain warranty, unit must be protected against theft and vandalism and stored indoors at all times. III. STEP 3 — PROVIDE UNIT SUPPORT Refer to Fig. 1 and 2 for unit dimensions and component locations. Refer to Table 1 for unit sizes and weights. Each unit requires the following field-supplied items: 4 — threaded suspension rods (3/8-in.-16 SAE Grade 1 minimum) 4— washers 4 — locknuts Install the 4 field-supplied rods by suspending them from a suitable ceiling support. Locate rods to mate with 4 outside corner rigging holes shown in Fig. 1 and 3. The ceiling and ceiling supports of existing buildings may require reinforcements; follow all applicable codes. DIMENSIONS (ft-in.) UNIT 502A A B C D E 036 048 060 2-43/4 2-5 2-43/4 2-2 2-3 2-23/4 1-53/4 1-115/8 1-115/8 1-2 1-87/8 1-77/8 1-1 1-77/8 1-77/8 LEGEND Center of Gravity Direction of Airflow Fig. 1 — Dimensions Table 1 — Physical Data UNIT 502A 036 OPERATING WEIGHT (lb) Base Unit, Evap/Condenser Section 480, 206/274 SHIPPING WEIGHT (lb)* 590 REFRIGERANT TYPE Operating Charge (lb)† 5.5 COMPRESSOR — TYPE Quantity...Model Oil (oz) HPS Setting (psig) Cutout Reset LPS Setting (psig) Cutout Reset CONDENSATE DRAIN CONNECTION Size (in.)...Type CONDENSER FAN (1)...ZR34 42 048 580, 250/330 690 R-22 8.0 Scroll (1)...ZR49 48 426 ± 7 320 ± 20 27 ± 4 67 ± 7 3/4...FPT Centrifugal — Belt Drive 060 590, 254/336 700 7.6 (1)...ZR57 54 Nominal Cfm 1350 2250 2450 Maximum Rpm 1100 1500 Blower Size (in.) 12 x 6 12 x 9 Pulley Pitch Diameter (in.) Blower 5.0 6.0 6.0 Motor (Variable) 2.4-3.4 1.9-2.9 2.4-3.4 Motor Hp 3/4 1 11/2 Motor Rpm 1725 1725 1725 EVAPORATOR AIR FAN (Standard) Centrifugal — Direct Drive Nominal Cfm 1200 1600 2000 Max Rpm 1150 1050 Blower Size (in.) 10 x 6 10 x 6 Motor Hp (Rpm) 1/2 (1075) 3/4 (1050) EVAPORATOR AIR FAN (Optional) Centrifugal Belt Drive Nominal Cfm 1600 2000 Max Rpm 1300 Blower Size (in.) Motor Hp Motor Rpm Not Available 10 x 8 11/2 1725 Pulley Pitch Diameter (in.) Blower 4.2 Motor (Variable) 2.4-3.4 CONDENSER COIL Copper Tubes — Aluminum Fins Size (L x H) (in.) 40 x 16 40 x 22 Number of Rows...Fins/in. 4...17 4...13.6 EVAPORATOR COIL Size (L x H) (in.) Number of Rows...Fins/in. 34 x 16 4...15 Copper Tubes — Aluminum Fins 34 x 22 4...14.4 INDOOR-AIR FILTERS Number...Size (in.) 1...14 x 34 x 1 Factory-Supplied Cleanable Type 1...21 x 34 x 1 INTERCONNECTING TUBING SIZE (in.)** Hot Gas Liquid 1/2 3/8 1/2 3/8 1/2 3/8 LEGEND **Use Type L copper only. HPS — High-Pressure Switch NOTE: If components are to be split, the maximum length of refrigerant tubing to be LPS — Low-Pressure Switch used is 50 equivalent ft, assuming components will be installed in same horizontal plane. *Shipping weights include base unit plus packaging. If components are not to be installed in same horizontal plane, contact your Bryant rep †If components are to be split, additional refrigerant will be needed. Refer to Fig. 5-7 for resentative for more information. charging charts. —2— —3— CONTROL BOX ACCESS PANEL, COMPRESSOR, LOW-PRESSURE AND HIGH-PRESSURE SWITCHES AND SERVICE PORT CONNECTION ACCESS JUNCTION BOX CONDENSER SIDE ACCESS PANEL CONDENSER MOTOR AND BLOWER ACCESS-ALSO PROVIDES ACCESS FOR CLEANING CONDENSER COIL FILTER EVAPORATOR MOTOR AND BLOWER ACCESS-ALSO PROVIDES ACCESS FOR CLEANING EVAPORATOR FILTER DRIER AND CAPILLARY TUBE ACCESS ACCESS DOORS EVAPORATOR MOTOR CONDENSER MOTOR AND BLOWER ASSEMBLY CONTROL BOX FILTER DRIER UNIT WITH FILTER REMOVED Fig. 3 — Rigging Details Fig. 2 — Component Locations CENTER OF GRAVITY NOTE: Fasten threaded rods through holes in end frames as shown. Use 2 rods on each side of unit for a total of 4. UNIT 502A DIMENSIONS (in.) A B 036 28.8 26.0 048 29.0 27.0 060 28.8 26.8 CAUTION: All panels must be in place when rigging. IV. STEP 4 — RIG AND PLACE UNIT Move and store unit in horizontal position. Provide space around unit for service, filter access, ductwork, and overhead clearance as indicated in Fig. 1. Using suitable hydraulic lift source, raise unit up to meet bottom of the 4 threaded rods suspended from ceiling. Center unit so that the 4 threaded rods can be easily inserted into the factory-drilled holes at each end. Refer to Fig. 3 for rigging details. Apply washers and locknuts on ends of each of the 4 rods. Tighten locknuts sufficiently so that unit weight is supported entirely by the 4 rods. Level unit within the space by adjusting locknuts. IMPORTANT: Unit must be level to operate properly. NOTE: The 2 factory-drilled holes in the middle of the unit can be used for support if a split system application is desired. If required, a vibrat...