Carrier 50ZPA Installation Instructions Manual
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Carrier 50ZPA Installation Instructions Manual

Carrier 50ZPA Installation Instructions Manual

Single-packaged with r-22 refrigerant single- and three-phase units (sizes 024--060)
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Download this manual See also: Product Data
50ZPA
Single- -Packaged Air Conditioner System
With R- -22 Refrigerant
Single- - and Three- -Phase Units (Sizes 024- -060)
NOTE: Read the entire instruction manual before starting the
installation.

TABLE OF CONTENTS

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Installation Instructions
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Summary of Contents for Carrier 50ZPA

  • Page 1: Table Of Contents

    ......A05194 Fig. 1 - - Unit 50ZPA Install Electrical Connections ......

  • Page 2: Safety Considerations

    Unit can be moved with the rigging holds provided in the unit base. Refer to Table 1 for operating weights. Use extreme caution to The 50ZPA packaged air conditioner is fully self- -contained and prevent damage when moving the unit. Unit must remain in an designed for outdoor installation (See Fig.

  • Page 3: Configuring Units For Downflow (Vertical) Discharge

    -up. Allowable glues for condensate trap connection are: Standard ABS, CPVC, or PVC Figure 4 shows a typical duct system with 50ZPA unit installed. cement.. 19.17 3.92 1”...
  • Page 4 A05201 UNIT HEIGHT CENTER OF GRAVITY UNIT WEIGHT ELECTRICAL IN. [MM] IN. [MM] UNIT CHARACTERISTICS 50ZPA024 208/230- -1- -60 30.13 [765] 14.0 [356] 19.0 [483] 15.0 [381] 50ZPA030 208/230- -1- -60, 208/230- -3- -60 34.13 [867] 14.0 [356] 19.0 [483] 16.0 [406] 50ZPA036 208/230- -1- -60, 208/230- -3- -60...

  • Page 5: Install Electrical Connections

    Table 1—Physical Data UNIT SIZE NOMINAL CAPACITY (ton) 2- -1/2 3- -1/2 OPERATING WEIGHT (lb.) COMPRESSOR Scroll Ultra Tech Scroll REFRIGERANT (R- - 22) Quantity (lb.) 11.1 10.7 12.5 ® REFRIGERANT METERING DEVICE AccuRater Orifice ID (in.) 0.067 0.067 0.082 0.086 –...

  • Page 6: Routing Power Leads Into Unit

    Operation of unit on improper line voltage constitutes abuse and may cause unit damage that could affect warranty. ROUTING POWER LEADS INTO UNIT Use only copper wire between disconnect and unit. The high- -voltage leads should be in a conduit until they enter the unit; conduit termination at the unit must be watertight.

  • Page 7: Pre- -Start- -Up

    d. Ensure wires do not touch refrigerant tubing or sharp sheet metal edges. e. Inspect coil fins. If damaged during shipping and handling, carefully straighten fins with a fin comb. 4. Verify the following conditions: a. Make sure that outdoor- -fan blade is correctly positioned in fan orifice.

  • Page 8: Refrigerant Charge

    Refrigerant Charge — Amount of refrigerant charge is listed on unit 3. Insulate the temperature sensing device so that the outdoor nameplate and in Table 1. Refer to Carrier Refrigerant Service ambient doesn’t affect the reading. Techniques Manual, Refrigerants section. Unit panels must be in place when unit is operating during charging procedure.

  • Page 9: Indoor Airflow And Airflow Adjustments

    Step 6—Sequence of Operation blower motor. FAN OPERATION All 50ZPA blower motors are factory wired for rated airflow operation. The FAN switch on the thermostat controls indoor fan operation. When the FAN switch is placed in the ON position, the IFR...
  • Page 10 A06406 Fig. 12 - - Typical Single- -Phase Unit Electrical Diagram (Sizes 024- -042)
  • Page 11 A06407 Fig. 13 - - Typical Single- -Phase Unit Electrical Diagram (Sizes 048- -060)
  • Page 12 A06336 Fig. 14 - - Typical Three- -Phase Unit Electrical Diagram (Sizes 030- -042)
  • Page 13 A06337 Fig. 15 - - Typical Three- -Phase Unit Electrical Diagram (Sizes 048- -060)
  • Page 14 A05209 Fig. 16 - - Single- -Phase Accessory Electric Heater Wiring A06327 Fig. 17 - - Three- -Phase Accessory Electric Heater Wiring...
  • Page 15 Table 5—Electrical Data- -50ZPA VOLTAGE COMPRESSOR ELECTRIC HEAT POWER SUPPLY NOMINAL RANGE UNIT VOLTAGE SIZE Nominal (V ---Ph---Hz) MOCP --- /--- --- /--- 18.6/18.6 25/25 3.8/5 18.1/20.8 41.2/44.7 45/50 208/230--- 1--- 60 10.9 54.0 7.5/10 36.1/41.7 63.8/70.7 60/70 5.4/7.2 26/30 51.1/56.1...
  • Page 16 EXAMPLE: Supply voltage is 230-3-60. AB = 228 v LEGEND BC = 231 v AC = 227 v — Full Load Amps — Locked Rotor Amps 228 + 231 + 227 ® Average Voltage = Minimum Circuit Amps MOCP — Maximum Overcurrent Protection —...

  • Page 17: Start- -Up 7

    Table 7—Cooling Charging Chart SUCTION LINE TEMPERATURE (°F) Suction Line Pressure (PSIG) OD Temp. (°F) — — — — — — — — — — — — — — — — — — — — — — — — — —...

  • Page 18: Air Filter

    1. Remove screws on unit top cover surface. (Save all screws.) WARNING 2. Remove screws on unit top cover flange. (Save all screws.) 3. Lift top from unit carefully. Set top on edge and make sure PERSONAL INJURY AND UNIT DAMAGE HAZARD that top is supported by unit side that is opposite duct (or Failure to follow this warning could result in personal injury plenum) side.

  • Page 19: Outdoor Coil, Indoor Coil, And Condensate Drain Pan

    Table 8—Wet Coil Pressure Drop UNIT STANDARD CFM (S.C.F.M.) SIZE 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 .027 .034 .047 .053 .036 .042 .050 .055 .063 .072 .081 .050 .055 .063 .072 .081 .090 .097 .042 .049 .052 .059...

  • Page 20: Indoor Airflow

    solution. If a refrigerant leak is detected, refer to Check for Step 10—Liquid Line Strainers Refrigerant Leaks section. The liquid line strainers (to protect metering devices) are made of If no refrigerant leaks are found and low performance is suspected, wire mesh and are located in the liquid lines on the inlet side of the refer to Checking and Adjusting Refrigerant Charge section.
  • Page 21 Table 11—Troubleshooting Chart SYMPTOM CAUSE REMEDY Power failure Call power company Fuse blown or circuit breaker tripped Replace fuse or reset circuit breaker Defective contactor, transformer, control relay, or Replace component high--pressure, or low--pressure switch Compressor and outdoor fan will not start Insufficient line voltage Determine cause and correct Incorrect or faulty wiring...

  • Page 22: Start- -Up Checklist

    ____ Verify Refrigerant charge using charging tables *Measured at suction inlet to compressor {Measured at liquid line leaving outdoor coil HEATING & COOLING Catalog No: 50ZPA ---3SI Copyright 2006 Carrier Corporation Printed in the U.S.A. Edition Date: 08/06 Manufacturer reserves the right to change, at any time, specifications and design without notice and without obligation.

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