Trane GAM5B0A18M11EB Installation, Operation And Maintenance Manual
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Trane GAM5B0A18M11EB Installation, Operation And Maintenance Manual

Convertible air handlers
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Installation, Operation, and Maintenance
Convertible Air Handlers
1-1/2 – 5 Ton
Black Epoxy Coil
GAM5B0A18M11EB
GAM5B0A24M21EB
GAM5B0B36M31EB
GAM5B0C42M31EB
GAM5B0C48M41EB
GAM5B0C60M51EB
Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating,
and air-conditioning equipment can be hazardous and requires specific knowledge and training. Improperly installed, adjusted or
altered equipment by an unqualified person could result in death or serious injury. When working on the equipment, observe all pre-
cautions in the literature and on the tags, stickers, and labels that are attached to the equipment.
July 2023
Note: "Graphics in this document are for representation only.
SAFETY WARNING
18-GJ04D1-15B-EN
Actual model may differ in appearance."

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Summary of Contents for Trane GAM5B0A18M11EB

  • Page 1 Installation, Operation, and Maintenance Convertible Air Handlers 1-1/2 – 5 Ton Black Epoxy Coil GAM5B0A18M11EB GAM5B0A24M21EB GAM5B0B36M31EB GAM5B0C42M31EB GAM5B0C48M41EB GAM5B0C60M51EB Note: “Graphics in this document are for representation only. Actual model may differ in appearance.” SAFETY WARNING Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and air-conditioning equipment can be hazardous and requires specific knowledge and training.

  • Page 2: Table Of Contents

    ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES Important: This Document is customer property and is to remain with this unit. Please return to service information pack upon completion of work. Important: These instructions do not cover all variations in systems nor provide for every possible contingency to be met in connection with the installation.

  • Page 3: Section 1. Safety Information

    Section 1. Safety Information CAUTION WARNING CORROSION HAZARD! SAFETY HAZARD! This information is intended for To prevent shortening its service life, the air handler should not be used during use by individuals possessing adequate backgrounds of electrical and mechanical experience. Any attempt to the finishing phases of construction.

  • Page 4: Section 2. Unit Design

    Section 2. Unit Design 2.1 Cabinet Penetration Important: Due to the unique design of this unit, which allows the electrical wiring to be routed within the insulation, do not screw, cut, or otherwise punc- ture the unit cabinet in any location other than the ones illustrated.
  • Page 5 The Coil, Line Set, and Heater panels are removed using Phillips head screws. #3 Size Phillips Coil and Heater panels must be removed prior to re- moving the Line Set panel. To remove Coil Panel: 1. Turn screws on Coil panel. 2.

  • Page 6: Section 3. Unit Preparation

    Section 3. Unit Preparation 3.1 Prepare The Unit For Installation STEP 1 - Check for damage and report promptly to the carrier any damage found to the unit. Note: If the unit must be transported in a horizontal posi- tion, it must be laid on its back (marked “REAR” on carton). Note: After the unit is removed from the carton, release pressure from the coil to verify coil is pressurized and leak free.

  • Page 7: Section 4. Optional Cabinet Disassembly

    Section 4. Optional Cabinet Disassembly 4.1 Disassemble cabinet for installation in tight areas or as needed. Note: If the unit must be transported in a horizontal position, it must be laid on its back (marked “REAR” on carton). Note: To reassemble cabinet, follow the steps in reverse order.
  • Page 8 STEP 4 - Slide Blower assembly out of unit using built-in blower support channels and set aside. Note: Remove the cardboard from the bottom of the blower. Cut the tie wrap and remove the foam block located at the motor. Blower Support Channel STEP 5 - Slide Coil assembly out of unit using built-...
  • Page 9 STEP 6 - Use a 5/16 Allen wrench on the locking mechanism on each side of the bottom half of the cabinet to loosen the locking mechanism. The locks loosen by turning counter-clockwise approximately 3/4 of a turn. STEP 7 - Lift the Coil section up and away from the Blower section.
  • Page 10 STEP 8 - For extremely tight spaces where the cabinet needs to be rotated through a small opening, remove the top panel. Use a manual driver to avoid stripping screw holes. STEP 9 - Continue preparation by following the proper carrying procedures shown in Section 5.

  • Page 11: Section 5. Place Unit At Location

    Section 5. Place Unit at Location 5.1 Carry Unit STEP 1 - Carry the unit to the installation location. STEP 2 - Reassemble by reversing the steps listed in Section 4 if disassembly was required. Important: Under no conditions should metal strap- ping be attached to the unit to be used as support mechanisms for carrying or suspension purposes.

  • Page 12: Section 6. Unit Location Considerations

    Model H x D x W *Blower Unit Number Compartment Net Weight lbs. GAM5B0A18M11EB 50 x 22 x 17 1/2 GAM5B0A24M21EB 50 x 22 x 17 1/2 GAM5B0B36M31EB 56 x 22 x 21 GAM5B0C42M31EB 57 x 22 x 23 1/2...
  • Page 13 6.2 Four-Way Conversion To place the unit in the configuration your application requires (upflow, downflow, horizontal right, or horizontal left), simply turn the unit to that orientation. Note: The air handlers are shipped from the factory suitable for four-way application. Note: Entry for low voltage connections is allowed on either side of cabinet.
  • Page 14 Airflow Horizontal Left Refrigerant Low Voltage Condensate Connections Connections Drains inside unit Horizontal Left Configuration Low Voltage Connections Refrigerant inside unit Connections Airflow Horizontal Right Condensate Drains Horizontal Right Configuration...
  • Page 15 6.3 Non Ducted Applications CAUTION Supply Duct HAZARDOUS VAPORS! Do not install an air handler with a non-ducted return in the same closet, alcove, or utility room as a fossil fuel device. Hazard- ous vapors can be distributed throughout the condi- tioned space and equipment damage can result.
  • Page 16 6.5 Additional Unit Preparation Considerations • These units are not approved for outdoor installation. For proper installation the following items must be con- sidered prior to moving the unit to its installation site: • These units must be installed in the proper air flow direction.

  • Page 17: Section 7. Setting The Unit - Vertical Installation

    Section 7. Setting the Unit - Vertical Installation 7.1 Considerations Provide a minimum height of 14 inches for proper unrestricted airflow below the unit. Allow a minimum of 21 inches clearance in front of the air handler to permit maintenance and removal of filter. •...
  • Page 18 Plenum Installation 1. Assemble the plenum using the plenum’s Installer Guide. On units with sheet metal returns: Return plenum must be flanged. Sheet metal drill point screws must be 1/2” in length or shorter. Airflow Typical Plenum Installation 7.3 Downflow Installation •...

  • Page 19: Section 8. Setting The Unit - Horizontal Installation

    Section 8. Setting the Unit - Horizontal Installation 8.1 Considerations Important: Due to the unique design of this unit, which allows the electrical wiring to be routed within the insulation, do not screw, cut, or otherwise puncture Field Supplied the unit cabinet in any location other than the ones Isolators illustrated in this Installer Guide or in an approved ac- cessory’s Installer Guide.

  • Page 20: Section 9. Connecting The Duct Work

    Section 9. Connecting the Duct work 9.1 Duct Connection Considerations Important: Due to the unique design of this unit, which allows the electrical wiring to be routed within the insulation, do not screw, cut, or otherwise puncture the unit cabinet in any location other than the ones illustrated in this Installer Guide or in an approved accessory’s Installer Guide.

  • Page 21: Section 10. Refrigerant Line

    Table 10.1 Refrigerant Line Set and Connection Sizes Vapor Line Liquid Line Model Connection Connection GAM5B0A18M11EB GAM5B0A24M21EB GAM5B0B36M31EB GAM5B0C42M31EB GAM5B0C48M41EB GAM5B0C60M51EB Note: Refrigerant line sets should match the vapor line connection size in this table when connecting to any single stage outdoor unit.

  • Page 22: Section 11. Refrigerant Line Brazing

    Section 11. Refrigerant Line Brazing 11.1 Braze The Refrigerant Lines STEP 1 - Remove Heater, Coil, and Line Set panels. Heater (See Section 2.2 Panel Removal) Panel Line Set Panel Coil Panel Important: Do NOT unseal coil refrigerant connec- tion stubs until ready to make connections. Important: Heat Sensitive Bulb.
  • Page 23 Important: Heat Sensitive Bulb. The TXV sensing bulb must be removed or a wet rag Wet Rag on must be wrapped around the suction line between TXV sensor bulb the Bulb and the braze joint to protect the Bulb from failure due to overheating.
  • Page 24 Important: Do not open the service valves until the refrigerant lines and indoor coil leak check and evacu- ation are complete. 0350 Microns STEP 8 - Evacuate until the micron gauge reads no higher than 350 microns, then close off the valve to the vacuum pump.

  • Page 25: Section 12. Condensate Drain Piping

    Section 12. Condensate Drain Piping 12.1 Condensate Drain Piping Considerations • Do not use reducing fittings in the condensate • Condensate drain plumbing must comply with na- drain lines. tional, state, and local codes. • Route condensate drain lines away from air handler •...
  • Page 26 STEP 4 - Install a clean-out tee in the primary drain line for future maintenance. It is recom- mended that you install a cap on the top of the tee. 1.5” min. 1.5” minimum clearance is recommended from cabinet to inside edge of tubing STEP 5 - Insulate the primary drain line to...

  • Page 27: Section 13. Electrical - High Voltage

    Section 13. Electrical - High Voltage 13.1 High Voltage Power Supply WARNING The high voltage power supply must match the equipment nameplate. LIVE ELECTRICAL COMPONENTS! During installation, testing, servicing, and trouble- Power wiring, including ground wiring, must comply shooting of this product, it may be necessary to work with national, state, and local codes.
  • Page 28 STEP 4 - If an electric heater IS NOT being BLACK installed, remove the pigtail harness from the GREEN - GROUND documentation pack and connect it to the plug on the inside of the Heater Compartment in the cabinet. If an electric heater IS being installed, see the Installer’s Guide shipped with the electric heater.
  • Page 29 STEP 6 - Reinstall all panels before starting the air handler. NOTE: After replacing all panels, loosen the Line Set Panel screws approximately 1/4 - 1/2 turn. This will improve the seal between the Heater Panel and Line Set Panel. 13.3 Secure Coil (All Applications) STEP 1 - Remove screw and coil panel bracket from documentation packet.

  • Page 30: Section 14. Electrical - Low Voltage

    Section 14. Electrical - Low Voltage 14.1 Low Voltage Maximum Wire Length Table 14.1 Table 14.1 defines the maximum total length of low voltage wiring from the outdoor unit, to the indoor 24 VOLTS unit, and to the thermostat. WIRE SIZE MAX.
  • Page 31 STEP 6 - Using field supplied wire nuts, make connections per hookup diagrams. Air Handler Hook-up Diagram 1 Stage Cooling W2 Pink W3 Brown W1 White Air Handler Air Conditioner Comfort Control White White Blue Yellow Green Green Yellow Yellow Orange Blue Blue...
  • Page 32 Air Handler Hook-up Diagram 2 Stage Cooling NOTE: Airflow Speed tap W1 White adjustment is required W2 Pink W3 Brown Air Conditioner Air Handler YL/RD Comfort Control White White Green Green YL/BK Blue Yellow Yellow Purple Purple Blue Blue Field wiring •...

  • Page 33: Section 15. Product Specifications

    Section 15. Product Specifications GAM5B0B36M31EB GAM5B0A18M11EB GAM5B0A24M21EB MODEL 208-230/1/60 RATED VOLTS/PH/HZ. 208-230/1/60 208-230/1/60 See O.D. Specifications RATINGS ① See O.D. Specifications See O.D. Specifications Plate Fin INDOOR COIL — Type Plate Fin Plate Fin 3 - 14 3 - 14 3 - 14 Rows —...

  • Page 34: Section 16. Airflow Performance

    Section 16. Airflow Performance AIRFLOW PERFORMANCE GAM5B0A18M11EB EXTERNAL STATIC AIRFLOW (CFM) (in w.g) Speed Taps - 230 VOLTS Speed Taps - 208 VOLTS 4 † 4 † 1081 1078 1044 1038 NOTES: 1. Values are with wet coil and without filters.
  • Page 35 AIRFLOW PERFORMANCE GAM5B0A24M21EB EXTERNAL STATIC AIRFLOW (CFM) (in w.g) Speed Taps - 230 VOLTS Speed Taps - 208 VOLTS 4 † 4 † 1081 1078 1044 1038 NOTES: 1. Values are with wet coil and without filters. 2. Contact your particular filter manufacturer for pressure drop data. 3.
  • Page 36 AIRFLOW PERFORMANCE GAM5B0B36M31EB EXTERNAL STATIC AIRFLOW (CFM) (in w.g) Speed Taps - 230 VOLTS Speed Taps - 208 VOLTS 4 † 4 † 1438 1387 1197 1013 1435 1383 1194 1009 1394 1340 1143 1388 1334 1137 1350 1299 1090 1341 1291 1082...
  • Page 37 AIRFLOW PERFORMANCE GAM5B0C42M31EB EXTERNAL STATIC AIRFLOW (CFM) (in w.g) Speed Taps - 230 VOLTS Speed Taps - 208 VOLTS 4 † 4 † 1644 1575 1401 1266 1641 1572 1398 1263 1596 1525 1346 1215 1590 1519 1340 1209 1550 1480 1300 1157...
  • Page 38 AIRFLOW PERFORMANCE GAM5B0C48M41EB EXTERNAL STATIC AIRFLOW (CFM) (in w.g) Speed Taps - 230 VOLTS Speed Taps - 208 VOLTS 4 † 4 † 1913 1770 1694 1593 1910 1767 1691 1590 1874 1730 1653 1547 1868 1724 1647 1541 1834 1690 1611 1505...
  • Page 39 AIRFLOW PERFORMANCE GAM5B0C60M51EB EXTERNAL STATIC AIRFLOW (CFM) (in w.g) Speed Taps - 230 VOLTS Speed Taps - 208 VOLTS 4 † 4 † 2327 2020 1914 1819 1125 2324 2017 1910 1816 1122 2285 1980 1873 1780 2279 1974 1867 1774 2237 1944...

  • Page 40: Section 17. Wiring Data

    Section 17. Wiring Data WIRING DATA GAM5B0A18M11EB 240 VOLT 208 VOLT Heater Heater Heater Model Minimum Maximum Minimum Maximum Capacity Capacity Amps Amps Circuits Circuit Overload Circuit Overload Ampacity Protection Ampacity Protection BTUH BTUH Circuit Circuit No Heater 2.8* 2.8* BAYEAAC04BK1 3.84...
  • Page 41 WIRING DATA GAM5B0B36M31EB 240 VOLT 208 VOLT Heater Heater Heater Model Minimum Maximum Minimum Maximum Capacity Capacity Amps Amps Circuits Circuit Overload Circuit Overload Ampacity Protection Ampacity Protection BTUH BTUH Circuit Circuit No Heater 4.1* 4.1* BAYEAAC04BK1 3.84 13100 16.0 2.88 9800 13.8...
  • Page 42 WIRING DATA GAM5B0C48M41EB 240 VOLT 208 VOLT Heater Heater Heater Minimum Maximum Minimum Maximum Capacity Capacity Model Amps Amps Circuit Overload Circuit Overload Circuits Ampacity Protection Ampacity Protection BTUH BTUH Circuit Circuit No Heater 6.0* 6.0* BAYEAAC04BK1 3.84 13100 16.0 2.88 9800 13.8...

  • Page 43: Section 18. Distance From Belly Band To Shaft Face Of Motor For Minimum Vibration

    Section 18. Distance From Belly Band To Shaft Face Of Motor For Minimum Vibration BLOWER HOUSING BELLY BAND MOTOR WHEEL A is determined per chart Wheel is centered in Blower Housing MODEL DIM "A" GAM5B0A18M11EB 1-1/8 GAM5B0A24M21EB 1-1/8 GAM5B0B36M31EB 1-1/2 GAM5B0C42M31EB 1-1/2 GAM5B0C48M41EB 2-1/4 GAM5B0C60M51EB...

  • Page 44: Section 19. Wiring Diagram

    Section 19. Wiring Diagram...

  • Page 45: Section 20. Unit Outline Drawing

    Section 20. Unit Outline Drawing...

  • Page 46: Section 21. Filters

    The following combinations should be charged to 8 degrees sub-cooling to maintain ratings. degrees sub-cooling to maintain ratings. Indoor Unit Model No. Outdoor Unit Model No. Indoor Unit Model No. Outdoor Unit Model No. GAM5B0A18M11EB 4A6B4018E1 GAM5B0A18M11EB 4TWB4018E1 4A6H5018E1 4TWR5018E1 GAM5B0A24M21EB...
  • Page 47 22.2 System Start Up STEP 1 - Make sure all panels are securely in place and that all wiring has been properly dressed and secured. STEP 2 - Set the system thermostat to OFF. STEP 3 - Turn on electrical power disconnect(s) to apply power to the indoor and outdoor units.

  • Page 48: Section 23. 2-Stage Outdoor Adjustment

    Section 23. 2-Stage Outdoor Adjustment 23.1 Adjustments for 2-Stage outdoor AC models 16 SEER Cooling Models OD MODEL ID MODEL SPEED TAP SYSTEM STAGE 4TTR6024A* 0.333 4TTX6024G* GAM5B0A24M21* 0.273 4A7A6024G* 4TTR6036A* 1225 0.357 4TTX6036G* GAM5B0B36M31* 1070 0.272 4A7A6036G* 4TTR6036A* 1225 0.400 4TTX6036G* GAM5B0C42M31*...
  • Page 49 23.2 Adjustments for 2-Stage outdoor HP models 16 SEER Heat Pump Models OD MODEL ID MODEL SPEED TAP SYSTEM STAGE 4TWR6024A*④ 0.333 4TWX6024G*④ GAM5B0A24M21* 0.293 4A6H6024G*④ 4TWR6024A* 0.383 4TWX6024G* GAM5B0B30M21* 0.301 4A6H6024G* 4TWR6036A* 1150 0.500 4TWX6036E* GAM5B0B36M31* 1005 0.382 4A6H6036E* 4TWR6048A* 1375 0.468...

  • Page 50: Section 24. Sequence Of Operation

    Section 24. Sequence of Operation 24.1 Sequence of Operation GAM5 Sequence of Operation: Single Stage Heat Pump OD (heating) See unit, electric heat, and field wiring diagrams for 1. R-Y contacts close on the comfort control sending additional information. 24VAC to Y terminal on the fan relay and the Y in the outdoor unit.

  • Page 51: Section 25. Checkout Procedures

    Electric Heating 1. R-W contacts close on the comfort control sending 24VAC to the W terminal on the fan relay. 24VAC is also sent to EHC to energize the heat relay. 2. R-G contacts close on the comfort control send- ing 24VAC to the G terminal on the fan relay.

  • Page 52: Section 26. Troubleshooting

    Section 26. Troubleshooting Before starting, insure the blower wheel, indoor and outdoor coils are clean. Correct air Is sub cooling at the Is superheat Is air flow at least flow outdoor unit between < 5F? 350 CFM per ton? problem 8 to 12F? Is superheat TXV is OK...
  • Page 53 CONSTANT TORQUE MOTOR TROUBLESHOOTING FOR GAM5 NOTE: The fan control has a 90 second “OFF” delay that is Constant Torque Motor This terminal block is located on factory set on. To turn this Troubleshooting the motor. Look for labels below feature off, turn dip switch to 0 on the motor side of the and cycle power to the unit.
  • Page 54 NOTES...
  • Page 55 NOTES...
  • Page 56 About Trane and American Standard Heating and Air Conditioning Trane and American Standard create comfortable, energy efficient indoor environments for residential applications. For more information, please visit www.trane.com or www.americanstandardair.com The manufacturer has a policy of continuous data improvement and it reserves the right to change design and specifications without notice. We are committed to using environmentally conscious print practices.

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Gam5b0a24m21ebGam5b0b36m31ebGam5b0c42m31ebGam5b0c48m41ebGam5b0c60m51eb

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