Carrier 50GL030 Installation, Start-Up, And Operating Instructions Manual
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Carrier 50GL030 Installation, Start-Up, And Operating Instructions Manual

Carrier 50GL030 Installation, Start-Up, And Operating Instructions Manual

50gl series 3-phase single-packaged air conditioner with puron (r-410a) refrigerant sizes 030-060
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Installation, Start-Up, and Operating Instructions
NOTE: Read the entire instruction manual before starting the
installation.

TABLE OF CONTENTS

Index
SAFETY CONSIDERATIONS .....................................................1
RULES FOR SAFE INSTALLATION AND OPERATION....1-4
GENERAL ................................................................................4
RECEIVING AND INSTALLATION.....................................4-10
CHECK EQUIPMENT ..................................................................4
IDENTIFY UNIT......................................................................4
INSPECT SHIPMENT .............................................................4
PROVIDE UNIT SUPPORT .........................................................4
ROOF CURB ............................................................................4
SLAB MOUNT.........................................................................4
GROUND LEVEL....................................................................4
FIELD FABRICATE DUCTWORK.............................................4
PROVIDE CLEARANCES ...........................................................4
RIG AND PLACE UNIT ..............................................................4
INSPECTION............................................................................4
INSTALLATION ..................................................................4-6
CONNECT CONDENSATE DRAIN ...........................................6
INSTALL DUCT CONNECTIONS ..........................................6-8
DISCHARGE ..............................................................................7-8
INSTALL ELECTRICAL CONNECTIONS...........................8-10
HIGH-VOLTAGE CONNECTIONS..................................8-10
STANDARD CONNECTION................................................10
CONTROL VOLTAGE CONNECTIONS ............................10
TRANSFORMER PROTECTION .........................................10
PRE-START-UP ..........................................................................11
START-UP..............................................................................11-14
MAINTENANCE....................................................................15-20
TROUBLESHOOTING ...............................................................22
START-UP CHECKLIST............................................................23
NOTE TO INSTALLER - Before the installation, READ THESE
INSTRUCTIONS CAREFULLY AND COMPLETELY. Also,
make sure the User's Manual and Replacement Guide are left with
the unit after installation.
SAFETY CONSIDERATIONS
Installation and servicing of air-conditioning equipment can be
hazardous due to system pressure and electrical components. Only
trained and qualified personnel should install, repair, or service
air-conditioning equipment.
Untrained personnel can perform basic maintenance functions of
cleaning coils and filters. All other operations should be performed
by trained service personnel. When working on air-conditioning
equipment, observe precautions in the literature, tags and labels
attached to the unit, and other safety precautions that may apply.
Follow all safety codes. Wear safety glasses and work gloves. Use
quenching cloth for unbrazing operations. Have fire extinguisher
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1 4
PC 101
Tab 1b 1a
3-Phase Single-Packaged Air Conditioner
Sizes 030-060
Page
Printed in U.S.A.
Catalog No. 50GL-2SI
with Puron® (R-410A) Refrigerant
Fig. 1-Model 50GL
available for all brazing operations. Consult a qualified installer or
service agency for information or assistance. The qualified in-
staller or agency must use only factory-authorized kits or acces-
sories when modifying this product.
Before performing service or maintenance operations on
system, turn off power to unit. Turn off accessory heater
power switch, if applicable. Electrical shock can cause
serious injury or death.
Puron (R-410A) systems operate at higher pressures than
standard R-22 systems. Do not use R-22 service equipment or
components on Puron (R-410A) equipment. Ensure service
equipment is rated for Puron (R-410A).
RULES FOR SAFE INSTALLATION AND OPERATION
Recognize safety information. This is the safety-alert symbol
When you see this symbol in instructions or manuals, be alert to
the potential for personal injury.
Understand the signal words DANGER, WARNING, CAUTION,
IMPORTANT, and NOTE. These words are used with the safety-
alert symbol. DANGER identifies the most serious hazards which
will result in severe injury or death. WARNING signifies a hazard
which could result in serious injury or death. CAUTION is used to
identify unsafe practices which would result in minor personal
Pg 1
50GL
C99064
.
2-06
Replaces: New

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  • Page 1: Table Of Contents

    50GL 3-Phase Single-Packaged Air Conditioner with Puron® (R-410A) Refrigerant Visit www.carrier.com Installation, Start-Up, and Operating Instructions Sizes 030-060 NOTE: Read the entire instruction manual before starting the installation. TABLE OF CONTENTS Index Page SAFETY CONSIDERATIONS .............1 RULES FOR SAFE INSTALLATION AND OPERATION..1-4 GENERAL ................4...

  • Page 2: General

    Check all items against shipping list. should handle and install this equipment. Immediately notify the nearest Carrier Air Conditioning office if any item is missing. To prevent loss or damage, leave all parts in When working with this equipment, observe precautions in the original packages until installation.
  • Page 3 EVAP - EVAPORATOR NEC - NATIONAL ELECTRICAL CODE REQ'D - REQUIRED NOTE: DIMENSIONS ARE IN IN. (MM) 4 4 . 5 [ 1 . 7 5 ] C00064 Fig. 2—50GL030-036 Unit Dimensions CENTER OF GRAVITY UNIT HEIGHT UNIT WEIGHT IN. [MM] UNIT ELECTRICAL CHARACTERISTICS IN.
  • Page 4 REQUIRED CLEARANCE FOR OPERATION AND SERVICING REQUIRED CLEARANCE TO COMBUSTIBLE MATL. in. [mm] in. [mm] EVAP. COIL ACCESS SIDE..............36.00 [914.0] TOP OF UNIT...................14.00 [355.6] POWER ENTRY SIDE..............36.00 [914.0] DUCT SIDE OF UNIT.................2.00 [50.8] (EXCEPT FOR NEC REQUIREMENTS) SIDE OPPOSITE DUCTS ..............14.00 [355.6] UNIT TOP ..................48.00 [1219.0] BOTTOM OF UNIT ................0.50 [12.7] SIDE OPPOSITE DUCTS ..............36.00 [914.0]...
  • Page 5 46 3/16 17 3/8 TYP. 44 5/16 1 TYP. 13/16 SUPPORT B SUPPORT A (2) SIDE END VIEW DECK PAN (INSULATED) A99320 SIDE PANEL 0.75" BASE PAN 4.0" BOTTOM SUPPLY 3.0" SUPPORT RIB(S) SEAL STRIP (FACTORY SUPPLIED) COUNTER FLASHING NAILER (FIELD SUPPLIED) ROOFING FELT (FIELD SUPPLIED)

  • Page 6: Connect Condensate Drain

    4. Thread lifting bracket strapping around bottom perimeter of unit as follows: a. Open lever of tension buckle (ratchet type). OPTIONAL OPTIONAL RETURN SUPPLY b. Feed strapping through tension buckle (See Fig. 6). OPENING OPENING c. Pull strapping through tension buckle unit taut. d.

  • Page 7: Configuring Units For Downflow (Vertical) Discharge

    CONFIGURING UNITS FOR DOWNFLOW (VERTICAL) DIS- size increases or decreases or performance may be affected. CHARGE 12. Adequately insulate and weatherproof all ductwork located outdoors. Insulate ducts passing through unconditioned space, and use vapor barrier in accordance with latest issue of Sheet Metal and Air Conditioning Contractors National Association Before performing service or maintenance operations on the (SMACNA) and Air Conditioning Contractors of America...
  • Page 8 Table 1—Physical Data — Unit 50GL UNIT SIZE NOMINAL CAPACITY (ton) 2-1/2 3-1/2 OPERATING WEIGHT (lb) COMPRESSOR Scroll REFRIGERANT (R-410A) 10.0 Quantity (lb) AccuRater® Piston REFRIGERANT METERING DEVICE Orifice ID (in.) .057 .065 .070 .073 .086 CONDENSER COIL 1...17 2...17 2...17 2...17 2...17...

  • Page 9: High-Voltage Connections

    HIGH VOLTAGE Failure to follow these precautions could result in damage to POWER LEADS POWER the unit being installed: (SEE UNIT WIRING SUPPLY LABEL) 1. Make all electrical connections in accordance with NEC ANSI/NFPA(latest edition) and local electrical codes gov- erning such wiring.
  • Page 10 Table 3—Electrical Data VOLTAGE COMPRESSOR ELECTRIC HEAT POWER SUPPLY UNIT 50GL RANGE V-PH-HZ SIZE Nominal kW* Max Fuse or CRCT Breaker MOCP 14.9/14.9 20/20 208/230-3-60 63.0 3.8/5.0 10.4/12.0 15.7/17.7 20/20 7.5/10.0 20.8/24.1 28.7/32.7 30/35 19.7/19.7 25/25 3.8/5.0 10.4/12.0 19.7/19.7 25/25 208/230-3-60 12.2 77.0...

  • Page 11: Pre-Start-Up

    Verify the following conditions: cooling’’ (below room temperature). a. Make sure that condenser-fan blade is correctly positioned IMPORTANT: Three-phase, scroll compressor units (50GL030- in fan orifice. Leading edge of condenser-fan blade should 060) are direction-oriented. These units must be checked to ensure be 1/2 in.
  • Page 12 208/230-3-30 C00061 Fig. 13—208/230-3-60 Wiring Diagram...
  • Page 13 C00062 Fig. 14—460-3-60 Wiring Diagram...
  • Page 14 NOTE: Adjustment of the refrigerant charge is not required unless the unit is suspected of not having the proper R-410A Disconnect electrical power to the unit before changing charge. The charging label and the tables shown refer to system blower speed. Electrical shock can cause serious injury or temperatures and pressures.

  • Page 15: Maintenance

    Table 4—Wet Coil Air Delivery (Deduct 10% for 208v)* Horizontal and Downflow Discharge Unit 50GL030-060 230 AND 460 VOLT External Static Pressure (in. wg) Unit Motor Speed Watts Watts 1148 1104 1028 Watts High 1102 Watts 1352 1257 1240 1199...

  • Page 16: Maintenance

    The minimum maintenance requirements for this equipment are as f. Reinstall unit access panel. follows: 3. Restore electrical power to unit. Start unit and check for 1. Inspect air filter(s) each month. Clean or replace when proper blower rotation and motor speeds during heating and necessary.

  • Page 17: Troubleshooting

    cycles, or if a suspected malfunction has occurred, check each 1. Turn off all power to unit. electrical component with the proper electrical instrumentation. 2. Disconnect leads on switch. Refer to the unit wiring label when making these checkouts. 3. Apply ohmeter leads across switch. You should have conti- NOTE: Refer to the heating and/or cooling sequence of operation nuity on a good switch.
  • Page 18 50.0 60.0 70.0 80.0 SUCTION LINE TEMPERATURE (DEG. F) SUCTION LINE TEMPERATURE (DEG. C) C99080 Fig. 15—Cooling Charging Chart, 50GL030 Units (042) 60 Hz CHARGING CHART (036) 60 Hz CHARGING CHART OUTDOOR OUTDOOR TEMP TEMP FOR USE WITH UNITS USING R410A REFRIGERANT...
  • Page 19 SYNTHETIC ROOF PRECAUTIONARY PROCEDURE LIQUID LINE FILTER DRIER — The filter drier is specifically designed to operate with Puron. Use only factory-authorized 1. Cover extended roof working area with an impermeable components. Filter drier must be replaced whenever the refrigerant polyethylene (plastic) drip cloth or tarp.
  • Page 20 AIR CONDITIONER WITH PURON® (R-410A)—QUICK REFERENCE GUIDE Puron refrigerant operates at 50%-70% higher pressures than R-22. Be sure that servicing equipment and replacement components are designed to operate with Puron. Puron refrigerant cylinders are rose colored. • Puron refrigerant cylinders manufactured prior to March 1, 1999, have a dip tube that allows liquid to flow out of cylinder in upright position.
  • Page 21 Replace fuse or reset circuit breaker One leg of 3-phase power dead Determine cause Three-phase scroll compressor (50GL030-060) Correct the direction of rotation by reversing two Scroll compressor is rotating in the wrong direc- makes excessive noise, and there may be a of the 3-phase power leads to the unit.

  • Page 22: Start-Up Checklist

    Refrigerant Discharge __________ psig Discharge Temp† __________ ___ Verify refrigerant charge using charging tables ___ Verify that 3-phase scroll compressor (50GL030-060) is rotating in correct direction * Measured at suction inlet to compressor † Measured at liquid line leaving condenser Copyright 2006 CARRIER Corp.

This manual is also suitable for:

50gl03650gl04250gl06050gl048

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