Trane GAF2A0A36M31EC Installer's Manual
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Trane GAF2A0A36M31EC Installer's Manual

Trane GAF2A0A36M31EC Installer's Manual

Convertible air handlers 3 ton
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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. Should further
information be desired or should particular problems arise
which are not covered sufficiently for the purchaser's
purposes, the matter should be referred to your installing
dealer or local distributor.
Note: The manufacturer recommends installing ONLY
AHRI approved, matched indoor and outdoor systems.
Some of the benefits of installing approved matched
indoor and outdoor split systems are maximum efficiency,
optimum performance, and the best overall system
reliability.
Note: Condensation may occur on the surface of the air
handler when installed in an unconditioned space. When
units are installed in unconditioned spaces, verify that
all electrical and refrigerant line penetrations on the air
handler are sealed completely.
Important: The GAF2 air handlers will only use the
following internal electric heaters:
BAYECAA05LG1, BAYECAA08LG1, BAYECAA10LG1
Installer's Guide
Convertible Air Handlers
3 Ton
Black Epoxy Coil
GAF2A0A36M31EC
18-GJ52D1-7A-EN
Standard Coil
GAF2A0A36M31SC

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Summary of Contents for Trane GAF2A0A36M31EC

  • Page 1 Installer’s Guide Convertible Air Handlers 3 Ton Black Epoxy Coil Standard Coil GAF2A0A36M31EC GAF2A0A36M31SC 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.

  • Page 2: Table Of Contents

    Table of Contents Section 1. Safety Information..........................2 Section 2. Unit Design............................3 Section 3. Unit Preparation..........................5 Section 4. Optional Cabinet Disassembly......................6 Section 5. Place Unit at Location........................8 Section 6. Unit Location Considerations......................9 Section 7. Setting the Unit - Vertical Installation....................14 Section 8.

  • Page 3: 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 puncture the unit cabinet in any location other than the ones illustrated.
  • Page 4 To remove Coil Panel: 1. Use a screwdriver to remove the four screws on Line Set Panel Coil Panel. 2. Pull panel straight out, away from cabinet. 3. Set aside. Heater Panel To remove Blower Panel: 1. Use a screwdriver to remove the four screws on Blower Panel.

  • Page 5: 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 position, it must be laid on its back (marked “REAR” on carton).

  • Page 6: 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). To reassemble cabinet, follow the steps in reverse order.
  • Page 7 STEP 4 - Slide the Coil assembly out of unit using Coil Support built-in coil support channels and set aside. Channel STEP 5 - For extremely tight spaces where the cabinet needs to be rotated through a small opening, remove the top panel and all cross members.

  • Page 8: 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 strapping be attached to the unit to be used as support mechanisms for carrying or suspension purposes.

  • Page 9: Section 6. Unit Location Considerations

    Section 6. Unit Location Considerations 6.1 Unit Dimensions and Weight Table 7.1 Model H x D x W Unit Number Net Weight lbs. GAF2A0A36M31EC 39 x 22 x 17.5 GAF2A0A36M31SC...
  • Page 10 6.2 Three-Way Conversion To place the unit in the configuration your application requires (upflow, horizontal right, or horizontal left), simply turn the unit to that orientation. Note: The air handlers are shipped from the factory suitable for three-way application. Note: Entry for low voltage connections is allowed on either side of cabinet. Refrigerant Connections Upflow...
  • Page 11 Airflow Low Voltage Horizontal Left Refrigerant Connections Condensate Connections inside unit Drains Horizontal Left Configuration Low Voltage Refrigerant Connections Connections inside unit Airflow Horizontal Right Condensate Drains Horizontal Right Configuration...
  • Page 12 6.3 Minimum Clearance Table Minimum Unit Clearance Table To Combustible Material Service Clearance (Required) (Recommended) Sides 0” 2” Front 0” 21” Back 0” 0” Inlet Duct 0” Outlet Duct 0” 6.4 Non Ducted Applications CAUTION HAZARDOUS VAPORS! Do not install an air Supply Duct handler with a non-ducted return in the same closet, alcove, or utility room as a fossil fuel device.
  • Page 13 6.6 Additional Unit Preparation Considerations For proper installation the following items must be unit in order to allow access for refrigerant lines. considered prior to moving the unit to its installation • Consider the overall space needed when external site: accessories are used, additional height and width requirements may exist.

  • Page 14: 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 15: 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 accessory’s Installer Guide.

  • Page 16: Section 9. Connecting The Ductwork

    Section 9. Connecting the Ductwork 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 17: Section 10. Refrigerant Line

    Section 10. Refrigerant Line 10.1 Refrigerant Line Connection Sizes Table 10.1 Refrigerant Line Set and Connection Sizes Vapor Line Liquid Line Model Connection Connection GAFA2A0A36M31SC, GAFA2A0A36M31SC Notes: 1. This table indicates the tubing connection diameters at the indoor coil. A field supplied reduc- ing coupling may be required.

  • Page 18: Section 11. Refrigerant Line Brazing

    Section 11. Refrigerant Line Brazing 11.1 Braze The Refrigerant Lines Heater STEP 1 - Remove Heater, Coil, and Line Set panels. Panel Line Set Panel Coil Panel (See Section 2.2 Panel Removal) Important: Do NOT unseal coil refrigerant connection stubs until ready to make connections. Important: Heat Sensitive Bulb.
  • Page 19 Important: Heat Sensitive Sensor. The temperature Sensor must be removed or a wet rag must be wrapped around the suction line between the Sensor and the braze joint to protect the Sensor from failure due to overheating. STEP 7 - Braze refrigerant line connections. Note: The suction line must be insulated prior to brazing the line set to the air handler stubs.
  • Page 20 Important: Do not open the service valves until the refrigerant lines and indoor coil leak check and 0350 evacuation are complete. Microns STEP 10 - Evacuate until the micron gauge reads no higher than 350 microns, then close off the valve to the vacuum pump.

  • Page 21: Section 12. Condensate Drain Piping

    Section 12. Condensate Drain Piping 12.1 Condensate Drain Piping Considerations • Do not use reducing fittings in condensate drain • Condensate drain plumbing must comply with national, state, and local codes. lines. • Route condensate drain lines away from air handler •...
  • Page 22 STEP 4 - Install a clean-out tee in the primary drain line for future maintenance. It is recommended that you install a cap on the top of the tee. 1.5” minimum 1.5” min. clearance is recommended from cabinet to inside edge of tubing STEP 5 - Insulate the primary drain line to prevent Insulation...

  • Page 23: Section 13. Electrical - Low Voltage

    Section 13. Electrical - Low Voltage 13.1 Low Voltage Maximum Wire Length Table 13.1 Table 13.1 defines the maximum total length of low voltage wiring from the outdoor unit, to the indoor unit, 24 VOLTS and to the thermostat. WIRE SIZE MAX.
  • Page 24 STEP 5 - Using field supplied wire nuts, make connections per hookup diagrams. Air Handler Hook-up Diagram Cooling White Air Handler Air Conditioner Comfort Control Yellow White White Blue Green Green Yellow Yellow Orange Blue Blue • YI and YO connections must be made as shown Field wiring •...

  • Page 25: Section 14. Electrical - High Voltage

    STEP 6 - Replace the blower and coil panels. Section 14. Electrical - High Voltage 14.1 High Voltage Power Supply WARNING The high voltage power supply must match the equipment nameplate. LIVE ELECTRICAL COMPONENTS! WARNING 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 26 14.2 Make Electrical Connections Conduit Entry Point STEP 1 - Route High Voltage wiring to unit. with Guides STEP 2 - The conduit entry point is located on the top of the unit when in the Upflow configuration. Drill a hole for the desired conduit size (up to 3/4””) on units without a plug.

  • Page 27: Section 15. Filters

    STEP 5 - Reinstall all panels before starting the air handler. Section 15. Filters 15.1 Filter Considerations • Since a filter option is not included within the air han- dler, a remote filter must be installed with the system. • For customer ease of fil ter maintenance, it is recom- mended that a properly sized remote filter grill(s) be installed for units that are difficult to access.

  • Page 28: Section 16. Unit Outline Drawing

    Section 16. Unit Outline Drawing GAF2A0A36M31**...

  • Page 29: Section 17. Start Up

    Section 17. Start Up 17.1 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. DONE CANCEL STEP 3 - Turn on electrical power disconnect(s) to apply power to the indoor and outdoor units.

  • Page 30: Section 18. Sequence Of Operation

    Section 18. Sequence of Operation 18.1 Sequence of Operation Cooling OD GAF2-36M Sequence of Operation: 1. R-Y contacts close on the comfort control sending 24VAC to Abbreviations Y terminal on ER and the YI (Y In) terminal on the EVC •...

  • Page 31: Section 19. Checkout Procedures

    Section 19. Checkout Procedures 19.1 Operational And Checkout Procedures Final phases of this installation are the unit Operational and Checkout Procedures. To obtain proper performance, all units must be operated and charge adjustments made in accordance with procedures found in the Service Facts of the Outdoor Unit.
  • Page 32 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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