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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 pur-
chaser's purposes, the matter should be referred to your
installing dealer or local distributor.
Note: The manufacturer recommends installing ONLY
A.H.R.I. approved, matched indoor and outdoor systems.
Some of the benefits of installing approved matched
indoor and outdoor split systems are maximum efficien-
cy, 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 GAM5A0C60M51SA air handler applied
in downflow or horizontal configurations should not ex-
ceed 2000 CFM. Airflow above 2000 CFM could result
in water blow-off. For verification, see airflow table.
Important: The GAM5 air handlers will only use the fol-
lowing internal electric heaters:
BAYEAAC05BK1AA
BAYEAAC05LG1AA
BAYEAAC08BK1AA
BAYEAAC08LG1AA
BAYEAAC10BK1AA
BAYEAAC10LG1AA
BAYEAAC10LG3AA
BAYEABC15BK1AA
BAYEABC15LG3AA
BAYEABC20BK1AA
BAYEACC25BK1AA
Installer's Guide
Convertible Air Handlers
1-1/2 – 5 Ton
GAM5A0A18M11SA
GAM5A0A24M21SA
GAM5A0B30M21SA
GAM5A0B36M31SA
18-GJ04D1-6
GAM5A0C42M31SA
GAM5A0C48M41SA
GAM5A0C60M51SA
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Summary of Contents for Trane GAM5A0A18M11SA
- Page 1 18-GJ04D1-6 Installer’s Guide Convertible Air Handlers 1-1/2 – 5 Ton GAM5A0A18M11SA GAM5A0C42M31SA GAM5A0A24M21SA GAM5A0C48M41SA GAM5A0B30M21SA GAM5A0C60M51SA GAM5A0B36M31SA 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.
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Page 2: Table Of Contents
Table of Contents Section 1. Safety Information ................3 Section 2. Unit Design ..................4 Section 3. Unit Preparation ................6 Section 4. Optional Cabinet Disassembly ..........7 Section 5. Place Unit at Location ..............12 Section 6. -
Page 3: Section 1. Safety Information
Section 1. Safety Information WARNING CAUTION SAFETY HAZARD! CORROSION HAZARD! This information is intended for use To prevent shortening its service by individuals possessing adequate backgrounds of electrical and life, the air handler should not be used during the finishing phases mechanical experience. -
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.
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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 position, it must be laid on its back (marked “REAR” on carton). -
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 2 - Disconnect the two wiring connections routed to the blower assembly. STEP 3 - Slide Blower assembly out of unit using built-in blower support channels and set aside. Wiring Connections Blower Support Channel STEP 4 - Remove airflow diverter from the bottom of coil drain pan by gripping the plastic diverter, using Diverter your thumbs to spread the top of the diverter slightly...
- Page 9 STEP 5 - Disconnect wires to the EEV motor and sensors inside the coil assembly. Cut the wire ties on those wire harnesses. Note: If cut, wire ties that held the sensor must be replaced after the coil is placed back into the cabinet.
- Page 10 STEP 8 - Lift the Coil section up and away from the Blower section. Set aside.
- Page 11 STEP 9 - For extremely tight spaces where the cabinet needs to be rotated through a small opening, remove the top panel and all cross members. Use a manual driver to avoid stripping screw holes. Note: Cross Members are removed by rotating them toward the door opening and then lifting up and out of the unit.
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Page 12: 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 13: 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 *Blower Unit Number Compartment Net Weight lbs. GAM5A0A18M21SA 50 x 22 x 17 1/2 GAM5A0A24M21SA 50 x 22 x 17 1/2 GAM5A0B30M31SA 52 x 22 x 21 GAM5A0B36M31SA 56 x 22 x 21... - Page 14 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. They are shipped in the down- flow orientation.
- Page 15 Airflow Control Horizontal Left Refrigerant Low Voltage Pocket Condensate Connections Connections Inside unit Drains inside unit Horizontal Left Configuration Control Low Voltage Pocket Connections Refrigerant Inside unit inside unit Connections Airflow Horizontal Right Condensate Drains Horizontal Right Configuration...
- Page 16 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. Hazardous vapors can be distributed throughout the conditioned space and equipment damage can result.
- Page 17 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.
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Page 18: Section 7. Setting The Unit - Vertical Installation
Section 7. Setting the Unit - Vertical Installation 7.1 Secure Coil (Vertical Upflow Applications) STEP 1 - Remove Coil Panel. STEP 2 - Remove screw from documentation packet. STEP 3 - While the air handler is in the upflow posi- tion, use the supplied screw to secure the coil seal plate to cross member as shown. - Page 19 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 7.4 Secure Coil (Downflow Applications) STEP 1 - Remove Coil Panel.
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Page 20: Section 8. Setting The Unit - Horizontal Installation
Section 8. Setting the Unit - Horizontal Installation 8.1 Secure Coil (Horizontal Applications) STEP 1 - Remove Coil Panel. STEP 2 - Remove screw from documentation packet. STEP 3 - While the air handler is in the upflow posi- tion, use the supplied screw to secure the coil seal plate to cross member as shown. -
Page 21: 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 punc- ture the unit cabinet in any location other than the ones illustrated in this Installer Guide or in an ap- proved accessory’s Installer Guide. -
Page 22: 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 GAM5A0A18M21SA GAM5A0A24M21SA GAM5A0B30M31SA GAM5A0B36M31SA GAM5A0C42M41SA GAM5A0C48M41SA GAM5A0C60M51SA Note: Refrigerant line sets should match the vapor line connection size in this table when connecting to any single stage outdoor unit. -
Page 23: 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. STEP 2 - Remove the plastic cap and Schrader valve core from the gas line. - Page 24 STEP 7 - Braze refrigerant line connections. Wet Rag on Note: The suction line must be insulated prior to Gas Temperature brazing the line set to the air handler stubs. Sensor (GT) 1. Pull back the insulation before brazing the suc- tion line.
- Page 25 Important: Do not open the service valves until the refrigerant lines and indoor coil leak check and evacu- ation are complete. 0350 Microns STEP 10 - Evacuate until the micron gauge reads no higher than 350 microns, then close off the valve to the vacuum pump.
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Page 26: 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 27 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. 3” minimum 3” min. clearance is recommended from cabinet to inside edge of tubing STEP 5 - Insulate the primary drain line to...
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Page 28: Section 13. Electrical - Low Voltage
Section 13. Electrical - Low Voltage 13.1 Low Voltage Maximum Wire Length Table 11.1 defines the maximum total length of low Table 13.1 voltage wiring from the outdoor unit, to the indoor 24 VOLTS unit, and to the thermostat. WIRE SIZE MAX. - Page 29 STEP 3 - Remove the control board from the control pocket by sliding the control pocket mounting plate out until the first stop is reached. Control Pocket Inside unit Control Board For Horizontal Right installations Only Remove the control board completely from the con- trol pocket.
- Page 30 STEP 4 - Make connections per hookup diagrams. Air Handler Hook-up Diagram Cooling Air Handler Air Conditioner Comfort Control W3 * White White Blue Yellow Green Green Yellow Yellow Orange O ** Blue Blue R ** B - Blue Y - Yellow Field wiring •...
- Page 31 Air Handler Hook-up Diagram Heat Pump Heat Pump Black (X2) Yellow Air Handler Comfort Control Orange W3 * Blue White White W1 - White Green Green Yellow Yellow Orange Orange O ** O - Orange R ** R - Red Blue Blue B - Blue...
- Page 32 STEP 7 - Slide control plate assembly into the control pocket until fully seated. The control plate should be flush with the outer edge of the unit. STEP 8 - Replace Coil panel making sure that the wires are located within the wire pass-through pro- vided in the panel.
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Page 33: Section 14. Electrical - High Voltage
Section 14. Electrical - High Voltage 14.1 High Voltage Power Supply The high voltage power supply must match the WARNING equipment nameplate. LIVE ELECTRICAL COMPONENTS! Power wiring, including ground wiring, must comply During installation, testing, servicing, and troubleshooting of this with national, state, and local codes. - Page 34 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.
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Page 35: Section 15. Time Delay Switch Adjustment
Section 15. Time Delay Switch Adjustment 15.1 Remove the blower door panel. The Blower/Filter panel is removed using 1/4 turn thumb screws. 1. Turn thumb screws on Blower/Filter panel. 2. Pull top of panel out, away from cabinet. 3. Lift panel up out of channel. 4. -
Page 36: Section 16. Unit Outline Drawing
Section 16. Unit Outline Drawing... -
Page 37: Section 17. 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. GAM5A0A18M11SA 4A6B4018E1 GAM5A0A18M11SA 4TWB4018E1 4A6H5018E1 4TWR5018E1 GAM5A0A24M21SA... - Page 38 18.2 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. DONE CANCEL STEP 3 - Turn on electrical power disconnect(s) to apply power to the indoor and outdoor units.
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Page 39: Section 19. Sequence Of Operation
Section 19. Sequence of Operation 19.1 Sequence of Operation GAM5 Sequence of Operation: 3. The combination of 24VAC on the Y terminal and zero volts on the O terminal signals the EVC that the unit is in Abbreviations heat-pump heating mode. •... -
Page 40: Section 20. Checkout Procedures
................[ ] The manufacturer has a policy of continuous product and product data improvement and it reserves the right to change design and 6200 Troup Highway specifications without notice. Tyler, TX 75707 www.trane.com © Trane U.S. Inc. 2012 www.americanstandardair.com...
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