Carrier 50BA- Manuals

Page 2 - UNIT; ■Fig. 1 — Unit Dimensions

UNITS 50BA,BB004,006,008 AND 012« DIMENSIONS (ft-in ) VIEW A-A -- M ---- -v^ ALT REAR INLET -v^ ELOOR *ALTERNATE RETURN AIR OR OUTDOOR AIR INLET UNIT 50BA.BB 004 006 008, 012 A 3- 2-5/16 4-0 B 1-10-7/8 2- 6-1/8 C 1 5- 3-7/8 6-5 D See Note 2 1-0 E 2-0 F 1-1-13/16 1- 4-7/16 1- 7-3/8 G 1-1-1/8 1-3 1- 5...

Page 6 - isBKggggsas^iKssasìgagsasBgagaagMi; BASE UNIT GENERAL VIEW

isBKggggsas^iKssasìgagsasBgagaagMi BASE UNIT GENERAL VIEW 1 — Accessory Plenum 2 — Selector Switch and Thermostat3 — Thermostatic Expansion Valve 4 — Indoor Air Fan 5 — Indoor Air Fan Motor6 — Indoor Air Fan Motor Mounting Bracket 7 — Evaporator 8 — Thermostat Sensing Bulb9 — Return Air Filter 10 — ...

Page 7 - LEGEND FOR; Step 5 — Install accessory plenum if supplied.

LEGEND FOR 50BA024 UNIT 1 — Indoor Air Fan 2 — Selector Switch 3 “ Return Air Filters 4 — Evaporator Coil 5 — Control Box 6 ^ Compressor N o 1 7 — Compressor No 2 8 — Condensers [7J (81 Fig. 3 — Base Unit Interior Details (50BA024 Unit Shown) Step 5 — Install accessory plenum if supplied. On unit Si...

Page 10 - FAN CLAMP BOLT

Step 8 — Align fan shaft and wheel. HORIZONTAL WHEEL CENTERING — All wheels must be horizontally centered between the inside edges of their fan scroll venturis (Eig. 11). WHEEL VENTURI /SCROLL MUST BE EQUAL ALL AROUND Fig. 11 — Horizontal Wheel Centering Adjust as follows: Unit Sizes 50BA,BBQ04 thru...

Page 11 - Never operate unit without return-

Unit Sizes 5QBA028 thru 064 — Bearings are bolted to an angle support fastened to fan scroll (Fig. 15). To correct shaft and wheel concentric misalignment: 1. Loosen bearing support bolts and shim or move as required. 2. Retighten bearing support bolts. HORIZONTAL SHAFT ALIGNMENT (All units) — If th...

Page 12 - Wrap entire valve with wet rag.; Table 4 — Maximum Water-Side; UNIT SIZE 50BA

WATER-COOLED UNITS, SIZE 50BA004 THRU 012 — Connect condenser water supply and return lines as indicated in Fig. 16 and 17. When connecting water lines, hold the condenser inlet and outlet stubs firmly with a wrench at the FPT hex fitting to prevent twisting. Do not use water lines smaller than conn...

Page 13 - pN

W DIA KO FOR f'oDF LIQUID LINE ' dia hole for |“ fpt CONDENSATE CONN 2"DIA HOLES FOR i " fpt cond water OUTLET(BA)CONN = HOT GAS LINE (BB) : NOTE ■ ALL VIEWS ARE RIGHT END VIEWS EXCEPT AS INDICATED (50BA, BB004 THRU 012 UNITS) 2 FPT water OUTLET- T FPT CONDENSATE DRAIN CONN- I 1/8 0 DM HOT G...

Page 15 - Step 15 — Install unit drain line.; UNIT SIZE; Fig. 26 — Condensate Drain; I S

R£aRCUtAT{«6 SYBTeiiS - S£S NOTH ) NOTE For waste or city water, remove inlet manifold and supply condensers individually "Fig. 24 — 50BA064 Condenser Water Piping 50BA.BB* COIL NO. COMPR NO. CONO NO.* 016 1 1 1 024,028, 034,064 1, 2 1, 2 1, 2 044,054 1, 2, 3 1,2,3 1, 2, 3 *50BB units are conden...

Page 16 - Table 8 — Maximum Wire Sizes for

-> Table 7 — Electrical Data COMPRESSOR NO. 1 COMPRESSOR NO. 2 POWER SUPPLY VULI- IIMUUUK UNIT 50BA.BB VOLTS/PH/HZ AGE RANGE RLA LRA RLA LRA FAN MOTOR* Min Ckt Ampst MOCP Ampst Min Max BA BB BA BB BA BB BA BB Hp FLA BA BB BA BB 230/1/60 207 253 19 8 19 8 88 0 88 0 _ _ _ _ 1/3 33 28 1 28 1 45 45 0...

Page 17 - Fig. 27 — Field Power Wiring Connections; AND; _ Field Control Wiring Connections

On 50BA,BB004 and 006 units, field power wires are spliced to factory wires at the compressor contactor. On all other sizes, field power connections are made at a terminal block within the control box (see Fig. 27). Refer to Table 8 for maximum wire size at terminal block. Supply voltage must be in...

Page 18 - Open compressor discharge and suction service; Service Valves; Always be sure that compressor; ^Capacity Control Valve Adjustment

Refer to Fig. 28 for field control wiring to pump relay (50BA unit), condenser fan relay (5ÛBB unit) and remote thermostat (unit sizes 016 thru 064). On 50BA,BB004 thru 012 units, the thermostat is factory installed with a sensing bulb in the return air. To wire these units to a remote thermostat, o...

Page 19 - Fig. 29 — Capacity Control Valve; Increasing fan speed increases load on motor. Do; flanges; Fig. 30 — Indoor Air Fan Pulley Adjustment

Table 10 — Factory Set Points (psig) UNIT 50BA.BB ACTION UNLOADER NO. 1 UNLOADER NO. 2 012 Load Unload 6958 — 016 Load Unload 69 58 — 064 Load Unload 77 58 74 55 TO REGULATE CONTROL SET POINT E Turn adjustment nut (Fig. 29) clockwise to its bottom stop. Set point is now 85 psig. 2. Turn adjustment n...

Page 21 - Return-Air Grille Removal; TEA

« ->NOTE: Water regulating valve (water-cooled condenser) or condenser airflow (air-cooled condenser) must he properly set before checking system charge. UNIT SIZE 50BA004 AND 006 - Units are shipped with full operating charge. If recharging is necessary: 1 . 2 . 3. 4. 6 . Insert thermometer bulb...

Page 22 - CAUTION; evaporator coiis to prevent coil damage,; ЪоВАООа; ij

Access Panel Removal — On Size 004-012 units, remove return air grille as described above. Remove remaining grille side frame. Remove the panel fastening screws now exposed. TOP PANEL — Pull out and down. BOTTOM PANEL — Pull out and up. Indoor-Air Fan Motor Removal A CAUTION Before. aiiempttiJg:.to ...