Carrier Comfort 48ES-A Installation Instructions Manual
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Carrier Comfort 48ES-A Installation Instructions Manual

Carrier Comfort 48ES-A Installation Instructions Manual

13 seer single packaged air conditioner
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48ES---A
Comfort t 13 SEER Single ---Packaged Air Conditioner
and Gas Furnace System with Puron (R ---410A)
Refrigerant
Single and Three Phase
2---5 Nominal Tons (Sizes 24---60)
IMPORTANT: Effective January 1, 2015, all split system and
packaged air conditioners must be installed pursuant to applicable
regional efficiency standards issued by the Department of Energy.
NOTE:
Read the entire instruction manual before starting the
installation.
NOTE:
Installer: Make sure the Owner's Manual and Service
Instructions are left with the unit after installation.

TABLE OF CONTENTS

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Installation Instructions
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SAFETY CONSIDERATIONS
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Improper installation, adjustment, alteration, service maintenance,
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or use can cause explosion, fire, electrical shock, or other
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conditions which may cause death, personal injury, or property
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damage. Consult a qualified installer, service agency, or your
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distributor or branch for information or assistance. The qualified
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installer or agency must use factory- -authorized kits or accessories
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when modifying this product. Refer to the individual instructions
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packaged with the kits or accessories when installing.
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Follow all safety codes. Wear safety glasses, protective clothing,
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and work gloves. Have a fire extinguisher available. Read these
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instructions thoroughly and follow all warnings or cautions
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included in literature and attached to the unit. Consult local
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building codes, the current editions of the National Fuel Gas Code
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(NFGC) NFPA 54/ANSI Z223.1, and the National Electrical Code
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(NEC) NFPA 70.
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Fig. 1 - - Unit 48ES- -A
(Low NOx Model Available)
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Summary of Contents for Carrier Comfort 48ES-A

  • Page 1: Table Of Contents

    48ES---A Comfort t 13 SEER Single ---Packaged Air Conditioner and Gas Furnace System with Puron (R ---410A) Refrigerant Single and Three Phase 2---5 Nominal Tons (Sizes 24---60) Installation Instructions IMPORTANT: Effective January 1, 2015, all split system and packaged air conditioners must be installed pursuant to applicable regional efficiency standards issued by the Department of Energy.

  • Page 2: Introduction

    RECEIVING AND INSTALLATION In Canada refer to the current editions of the National Standards of Canada CAN/CSA- -B149.1 and .2 Natural Gas and Propane Step 1 — Check Equipment Installation codes, and Canadian Electrical Code CSA C22.1 Identify Unit Recognize safety information. This is the safety- -alert symbol The unit model number and serial number are stamped on the unit When you see this symbol on the unit and in instructions or manu- information plate.
  • Page 3 A09448 Fig. 2 - - 48ES- -A24- -36 Unit Dimensions...
  • Page 4 A09449 Fig. 3 - - 48ES- -A42- -60 Unit Dimensions...
  • Page 5 Dashed lines show cross support location for large basepan units. HVAC unit HVAC unit basepan base rails Sealing Gasket Roofcurb Anchor screw Wood nailer* Flashing field supplied Roofcurb* Insulation (field supplied) Roofing material field supplied Cant strip field supplied SMALL/COMMON CURB A09413 *Provided with roofcurb A09090...

  • Page 6: Slab Mount

    Training for operators of the lifting equipment should include, but not be limited to, the following: 1. Application of the lifter to the load, and adjustment of the OPTIONAL OPTIONAL RETURN SUPPLY lifts to adapt to various sizes or kinds of loads. OPENING OPENING 2.
  • Page 7 CAUTION - NOTICE TO RIGGERS PRUDENCE - AVIS AUX MANIPULATEUR ACCESS PANELS MUST BE IN PLACE WHEN RIGGING. PANNEAUX D'ACCES DOIT ÊTRE EN PLACE POUR MANIPULATION. Use top skid as spreader bar. / Utiliser la palette du haut comme barre de répartition DUCTS MINIMUM HEIGHT: 36"...
  • Page 8 Table 1 – Physical Data - - Unit 48ES- -A UNIT SIZE 24040 24060 30040 30060 36060 36090 42060 42090 NOMINAL CAPACITY (ton) 2 ---1/2 2 ---1/2 3 ---1/2 3 ---1/2 SHIPPING WEIGHT** lb. SHIPPING WEIGHT** (kg) Scroll COMPRESSORS Quantity REFRIGERANT (R --- 410A) Quantity lb.

  • Page 9: Connect Condensate Drain

    Step 6 — Connect Condensate Drain assembly over flue panel. Orient screw holes in flue hood with holes in the flue panel. NOTE: When installing condensate drain connection be sure to 3. Secure flue hood to flue panel by inserting a single screw on comply with local codes and restrictions.

  • Page 10: Install Duct Connections

    Table 2 – Maximum Gas Flow Capacity* LENGTH OF PIPE FT (m)† NOMINAL INTERNAL IRON PIPE DIAMETER SIZE (IN.) (IN.) (12) (15) (18) (21) (24) (27) (30) (38) (46) (53) (61) .622 — — .824 1.049 1--- 1/4 1.380 1400 1--- 1/2 1.610 2100...

  • Page 11: Install Electrical Connections

    Step 10 — Install Electrical Connections WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death. The unit cabinet must have an uninterrupted, unbroken electrical ground. This ground may consist of an electrical wire connected to the unit ground screw in the control compartment, or conduit approved for electrical ground when installed in accordance with NFPA 70 (NEC) (latest edition) (in Canada, Canadian Electrical Code CSA C22.1)

  • Page 12: Special Procedures For 208- -V Operation

    Single phase units: 1. Run the high- -voltage (L1, L2) and ground lead into the HIGH VOLTAGE control box. POWER LEADS POWER (SEE UNIT WIRING 2. Connect ground lead to chassis ground connection. SUPPLY LABEL) 3. Locate the black and yellow wires connected to the line side 3-PHASE SHOWN of the contactor (if equipped).

  • Page 13: Pre- -Start- -Up

    PRE- -START- - UP WARNING WARNING FIRE, EXPLOSION HAZARD Failure to follow this warning could result in personal ENVIRONMENTAL, FIRE, EXPLOSION, injury, death or property damage. ELECTRICAL SHOCK HAZARD Do not purge gas supply into the combustion chamber. Do Failure to follow this warning could result in personal not use a match or other open flame to check for gas leaks.

  • Page 14: Check Heating Control

    Step 2 — Start- -up Heating and Make Adjust- integrated gas unit controller (IGC) has the capability to automatically reduce the evaporator “ON” delay and in- ments crease the evaporator “OFF” delay in the event of high duct Complete the required procedures given in the Pre- -Start- -Up static and/or partially- -clogged filter.

  • Page 15: Check Burner Flame

    Adjust Gas Input EXAMPLE: Assume that the size of test dial is 1 cu ft, one revolution takes 32 sec, and the heating value of the gas is 1050 The gas input to the unit is determined by measuring the gas flow Btu/ft .
  • Page 16 A09282 Fig. 14 - - 208/230- -1- -60 Connection Wiring Diagram...
  • Page 17 A09282 Fig. 14 Cont. - - 208/230- -1- -60 Ladder Wiring Diagram...
  • Page 18 A09264 Fig. 15 - - 208/230- -3- -60 Connection Wiring Diagram...
  • Page 19 A09264 Fig. 15 Cont. - - 208/230- -3- -60 Ladder Wiring Diagram...
  • Page 20 A09265 Fig. 16 - - 460- -3- -60 Connection Wiring Diagram...
  • Page 21 A09265 Fig. 16 Cont. - - 460- -3- -60 Ladder Wiring Diagram...

  • Page 22: Normal Operation

    Normal Operation Rollout Switch An LED (light- -emitting diode) indicator is provided on the The function of the rollout switch is to close the main gas valve in integrated gas unit controller (IGC) to monitor operation. The IGC the event of flame rollout. The switch is located above the main is located by removing the control access panel (see Fig.

  • Page 23: Indoor Airflow And Airflow Adjustments

    An accurate thermocouple- - or thermistor- -type thermometer, and a This unit has independent fan speeds for gas heating and cooling. gauge manifold are required when using the subcooling charging In addition, this unit has the field-selectable capability to run two method for evaluating the unit charge.

  • Page 24: Continuous Fan Operation

    5. Remove the vinyl cap off of the desired speed tap wire Table 6 – Color Coding for Indoor Fan Motor Leads (Refer to Table 6 for color coding) for the dehumidification Black = High Speed cooling fan speed and place desired speed tap wire on the Orange = Med--- High Speed Red = Med Speed “LOW”...
  • Page 25 Table 7 – Cooling Charging Chart A08490...

  • Page 48: Maintenance

    MAINTENANCE blower wheel bi- -monthly to determine proper cleaning frequency. To ensure continuing high performance and to minimize the 4. Check electrical connections for tightness and controls for possibility of premature equipment failure, periodic maintenance proper operation each heating and cooling season. Service must be performed on this equipment.

  • Page 49: Induced Draft (Combustion Air) Blower

    g. Reinstall blower access panel (see Fig. 19). 3. Restore electrical power to unit. Start unit and check for proper blower rotation and motor speeds during heating and cooling cycles. Induced Draft (combustion air) Blower Assembly The induced- -draft blower assembly consists of the inducer motor, the blower housing, and the induced- -draft blower wheel.

  • Page 50: Removal Of Gas Train

    Removal of Gas Train To remove the gas train for servicing: 1. Shut off main gas valve. BLOWER HOUSING 2. Shut off power to unit and install lockout tag. 3. Remove control access panel (See Fig. 19). 4. Disconnect gas piping at unit gas valve. 5.

  • Page 51: Electrical Controls And Wiring

    FAN GRILLE MOTOR MOTOR SHAFT A08505 MAX DISTANCE BETWEEN TOP OF FAN GRILLE AND BOTTOM OF FAN BLADE “A” SIZE Fig. 22 - - Fan Blade Position Electrical Controls and Wiring Gas Input Inspect and check the electrical controls and wiring annually. Be The gas input does not require checking unless improper heating sure to turn off the electrical power to the unit.

  • Page 52: Troubleshooting

    NOTE: Because these switches are attached to refrigeration Compressor Oil system under pressure, it is not advisable to remove this device for The Copeland scroll compressor uses 3MAF POE oil. If additional troubleshooting unless you are reasonably certain that a problem oil is needed, use Uniqema RL32- -3MAF.
  • Page 53 PURONR (R- -410A) QUICK REFERENCE GUIDE S Puron refrigerant operates at 50- -70 percent higher pressures than R- -22. Be sure that servicing equipment and replacement components are designed to operate with Puron S Puron refrigerant cylinders are rose colored. S Recovery cylinder service pressure rating must be 400 psig, DOT 4BA400 or DOT BW400.
  • Page 54 Table 13 – 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, or high--pressure, Replace component loss--of--charge or low--pressure switch Compressor and condenser fan will not start. Insufficient line voltage Determine cause and correct Incorrect or faulty wiring...
  • Page 55 Table 14 – Troubleshooting Guide–Heating SYMPTOM CAUSE REMEDY Water in gas line Drain. Install drip leg. No power to furnace Check power supply fuses, wiring or circuit breaker. Check transformer. No 24--v power supply to control circuit NOTE: Some transformers have internal over--current protection that requires a cool--down period to reset.
  • Page 56 { Measured at liquid line leaving condenser. Catalog No: 48ES---10SI Copyright 2015 Carrier Corp. S 7310 W. Morris St. S Indianapolis, IN 46231 Edition Date: 03/15 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

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