Trane GAM5 Series Modular Multi-position Air Handlers

Product Overview

This document provides detailed product data for the Trane GAM5 series of modular multi-position air handlers. These units are designed for efficient and reliable performance in commercial and residential applications.

Available with Standard Coil or Black Epoxy Coil options:

• Standard Coil Models: GAM5B0A18M11SB, GAM5B0A24M21SB, GAM5B0B30M21SB, GAM5B0B36M31SB, GAM5B0C42M31SB, GAM5B0C48M41SB, GAM5B0C60M51SB
• Black Epoxy Coil Models: GAM5B0A18M11EA, GAM5B0A24M21EA, GAM5B0B30M21EA, GAM5B0B36M31EA, GAM5B0C42M31EA, GAM5B0C48M41EA, GAM5B0C60M51EA

Note: Graphics in this document are for representation only. Actual models may differ in appearance.

Document Revision: April 2020 (22-1845-16A-EN)

Features and Benefits

• Unique Cabinet Design: Double wall foamed and formed cabinet system, waterproof design, R-4.2 insulating value (Avg R-8.2), composite cabinet doors, sweat/loose fiber eliminating design, smooth cleanable surface, precision durable door seals, modular cabinet.
• Multi-Position Capability: Supports UP/Down Flow and Horizontal Left/Right configurations.
• Convenient Features: Phillips head door fasteners, side return option, pre-marked conduit connection locations, easy access large thumb screws.
• Vortica™ Blower: Integrated slide deck for easy removal, polarized plug connections.
• Coil Design: Aluminum coil with integrated slide deck for easy removal, patented enhanced coil fin.
• Heating Options: Slide-in electric heaters with polarized plug connections (sold as accessory).
• Airflow and Connections: Labeled panels and connections, 1 1/4" to 1" and 3/4" to 1/2" conduit connections (left, right, top), molded 1" standard filter rail.
• Refrigerant System: R-410A Thermal Expansion Valve (TXV), R-22 conversion TXV available (sold as accessory).
• Electrical: Low voltage pigtail connections, safety door switch with fused 24V power.
• Performance: Blow-through design, high efficiency ECM motor, compact dimensions (20.8" depth with doors removed), maximum width of 23.5", integrated horizontal drain pans, soft start fan motor operation.
• Warranty: 5-year standard warranty, 10-year registered warranty, optional extended warranty available.

Optional Equipment

A variety of optional accessories are available for the air handlers, including electric heaters, duct flanges, filter kits, sound baffles, condensate switches, hanger kits, UVC lights, and conversion kits.

General Data

The following tables detail the product specifications for the GAM5 series air handlers.

Note: These Air Handlers are AHRI certified with various Split System Air Conditioners and Heat Pumps (AHRI STANDARD 210/240). Refer to the Split System Outdoor Unit Product Data Guides for performance data.

Note: 3/4" Male Plastic Pipe (Ref.: ASTM 1785-76)

Performance Data

The following tables provide airflow performance data (CFM) for various external static pressures and speed taps for different GAM5 models.

GAM5B0A18 Airflow Performance Table

Notes: 1. Values are with wet coil and without filters. 2. Contact your particular filter manufacturer for pressure drop data. 3. Electric heater pressure drop is negligible and is included within the airflow data. 4. Tap 1 is a continuous fan speed tap for single stage systems. Airflow adjustment is required for 2 stage systems. See Airflow adjustment section. 5. † Factory Setting

GAM5B0A18M11SB, GAM5B0A18M11EA Minimum Heater Airflow CFM

¹ Heater not qualified for downflow installations. ² Approved for 240 V only.

Notes: Heating and cooling speeds are the same, factory set at Speed Tap #4. A “G” only signal from the comfort control will run the blower at a lower speed, factory set at Speed Tap #1. See the Sequence of Operation for additional information. Speed Tap 1 is NOT used for two stage systems. Two stage systems will require an airflow adjustment.

GAM5B0A24 Airflow Performance Table

Notes: 1. Values are with wet coil and without filters. 2. Contact your particular filter manufacturer for pressure drop data. 3. Electric heater pressure drop is negligible and is included within the airflow data. 4. Tap 1 is an continuous fan speed tap for single stage systems. Airflow adjustment is required for 2 stage systems. See Airflow adjustment section. 5. † Factory Setting

GAM5B0A24M21SB, GAM5B0A24M21EA Minimum Heater Airflow CFM

¹ Heater not qualified for downflow installations. ² Approved for 240 V only.

Notes: Heating and cooling speeds are the same, factory set at Speed Tap #4. A “G” only signal from the comfort control will run the blower at a lower speed, factory set at Speed Tap #1. See the Sequence of Operation for additional information. Speed Tap 1 is NOT used for two stage systems. Two stage systems will require an airflow adjustment.

GAM5B0B30 Airflow Performance Table

Notes: 1. Values are with wet coil and without filters. 2. Contact your particular filter manufacturer for pressure drop data. 3. Electric heater pressure drop is negligible and is included within the airflow data. 4. Tap 1 is an continuous fan speed tap for single stage systems. Airflow adjustment is required for 2 stage systems. See Airflow adjustment section. 5. † Factory Setting

GAM5B0B30M21SB, GAM5B0B30M21EA Minimum Heater Airflow CFM

¹ 208 V not approved for upflow installations.

Notes: Heating and cooling speeds are the same, factory set at Speed Tap #4. A “G” only signal from the comfort control will run the blower at a lower speed, factory set at Speed Tap #1. See the Sequence of Operation for additional information. Speed Tap 1 is NOT used for two stage systems. Two stage systems will require an airflow adjustment.

GAM5B0B36 Airflow Performance Table

Notes: 1. Values are with wet coil and without filters. 2. Contact your particular filter manufacturer for pressure drop data. 3. Electric heater pressure drop is negligible and is included within the airflow data. 4. Tap 1 is an continuous fan speed tap for single stage systems. Airflow adjustment is required for 2 stage systems. See Airflow adjustment section. 5. † Factory Setting

GAM5B0B36M31SB, GAM5B0B36M31EA Minimum Heater Airflow CFM

Notes: Heating and cooling speeds are the same, factory set at Speed Tap #4. A “G” only signal from the comfort control will run the blower at a lower speed, factory set at Speed Tap #1. See the Sequence of Operation for additional information. Speed Tap 1 is NOT used for two stage systems. Two stage systems will require an airflow adjustment.

GAM5B0C42 Airflow Performance Table

Notes: 1. Values are with wet coil and without filters. 2. Contact your particular filter manufacturer for pressure drop data. 3. Electric heater pressure drop is negligible and is included within the airflow data. 4. Tap 1 is an continuous fan speed tap for single stage systems. Airflow adjustment is required for 2 stage systems. See Airflow adjustment section. 5. † Factory Setting

GAM5B0C42M31SB, GAM5B0C42M31EA Minimum Heater Airflow CFM

Notes: Heating and cooling speeds are the same, factory set at Speed Tap #4. A “G” only signal from the comfort control will run the blower at a lower speed, factory set at Speed Tap #1. See the Sequence of Operation for additional information. Speed Tap 1 is NOT used for two stage systems. Two stage systems will require an airflow adjustment.

GAM5B0C48 Airflow Performance Table

Notes: 1. Values are with wet coil and without filters. 2. Contact your particular filter manufacturer for pressure drop data. 3. Electric heater pressure drop is negligible and is included within the airflow data. 4. Tap 1 is an continuous fan speed tap for single stage systems. Airflow adjustment is required for 2 stage systems. See Airflow adjustment section. 5. † Factory Setting

GAM5B0C48M41SB, GAM5B0C48M41EA Minimum Heater Airflow CFM

Notes: Heating and cooling speeds are the same, factory set at Speed Tap #4. A “G” only signal from the comfort control will run the blower at a lower speed, factory set at Speed Tap #1. See the Sequence of Operation for additional information. Speed Tap 1 is NOT used for two stage systems. Two stage systems will require an airflow adjustment.

GAM5B0C60 Airflow Performance Table

Notes: 1. Values are with wet coil and without filters. 2. Contact your particular filter manufacturer for pressure drop data. 3. Electric heater pressure drop is negligible and is included within the airflow data. 4. Tap 1 is an continuous fan speed tap for single stage systems. Airflow adjustment is required for 2 stage systems. See Airflow adjustment section. 5. If the air handler is applied in downflow or horizontal configurations, the airflow should not exceed 2000 CFM. Airflow above 2000 CFM could result in water blow-off. 6. † Factory Setting

GAM5B0C60M51SB, GAM5B0C60M51EA Minimum Heater Airflow CFM

¹ If the air handler is applied in downflow or horizontal configurations, the airflow should not exceed 2000 CFM. Airflow above 2000 CFM could result in water blow-off. ² Tap 5 can be used but only when the external static pressure is .6" or above.

Notes: Heating and cooling speeds are the same, factory set at Speed Tap #4. A “G” only signal from the comfort control will run the blower at a lower speed, factory set at Speed Tap #1. See the Sequence of Operation for additional information. Speed Tap 1 is NOT used for two stage systems. Two stage systems will require an airflow adjustment.

Electrical Data

The following tables provide detailed wiring data for electric heaters used with the GAM5 air handlers, including specifications for 240V and 208V operation.

Wiring Data for GAM5B0A18M11SB, GAM5B0A18M11EA

Notes: * Motor Amps. Heater not qualified for downflow installations. Approved for 240 V only with Heat Pump.

Wiring Data for GAM5B0A24M21SB, GAM5B0A24M21EA

Notes: * Motor Amps. Heater not qualified for downflow installations. Approved for 240 V only with Heat Pump.

Wiring Data for GAM5B0B30M21SB, GAM5B0B30M21EA

Notes: * Motor Amps. 208 V not approved for upflow installations. MCA and MOP for circuit 1 contains the motor amps.

Wiring Data for GAM5B0B36M31SB, GAM5B0B36M31EA

Notes: * Motor Amps. MCA and MOP for circuit 1 contains the motor amps.

Wiring Data for GAM5B0C42M31SB, GAM5B0C42M31EA

Notes: * Motor Amps. MCA and MOP for circuit 1 contains the motor amps.

Wiring Data for GAM5B0C48M41SB, GAM5B0C48M41EA

Notes: * Motor Amps. MCA and MOP for circuit 1 contains the motor amps.

Wiring Data for GAM5B0C60M51SB, GAM5B0C60M51EA

Notes: * Motor Amps. MCA and MOP for circuit 1 contains the motor amps.

Field Wiring Diagrams

The following sections describe the field wiring for connecting the Trane GAM5 air handlers with various cooling and heat pump systems.

GAM5 Air Handlers with Single Stage Cooling

This diagram illustrates the hook-up for single-stage cooling, showing connections between the comfort control, air handler, and air conditioner. Key connections include:

• Comfort Control to Air Handler: White (W), Green (G), Yellow (Y), Orange (O), Red (R), Blue (B).
• Air Handler to Air Conditioner: Blue (B), Yellow (Y).
• Note: For multiple stages of electric heat, jumper W1, W2, and W3 together if the comfort control has only one stage of heat.

GAM5 Air Handlers with Single Stage Heat Pump

This diagram shows the field wiring for single-stage heat pump applications. Connections are made between the comfort control, air handler, and heat pump. Key connections include:

• Comfort Control to Air Handler: White (W), Green (G), Yellow (Y), Orange (O), Red (R), Blue (B).
• Air Handler to Heat Pump: Red (R), Blue (B), Yellow (Y).
• Note: For multiple stages of electric heat, jumper W1, W2, and W3 together if the comfort control has only one stage of heat.

GAM5 Air Handlers with Two Stage Cooling

This diagram details the field wiring for two-stage cooling. It requires airflow speed tap adjustment. Connections are made between the comfort control, air handler, and air conditioner.

• Comfort Control to Air Handler: White (W), Green (G), Yellow (Y1), Purple (Y2), Red (R), Blue (B).
• Air Handler to Air Conditioner: Y2 (YL/RD), Y1 (YL/BK), Blue.
• Note: Airflow adjustment is required for two-stage applications.

GAM5 Air Handlers with Two Stage Heat Pump

This diagram illustrates the field wiring for two-stage heat pump systems, also requiring airflow speed tap adjustment. Connections are made between the comfort control, air handler, and heat pump.

• Comfort Control to Air Handler: White (W), Green (G), Yellow (Y1), Purple (Y2), Orange (O), Red (R), Blue (B).
• Air Handler to Heat Pump: X2 (Black), Y1 (Yellow), Orange, Y2 (YL/RD), Blue.
• Note: Airflow adjustment is required for two-stage applications.

Convertibility

The GAM5 air handlers are multi-position units designed for flexibility in installation. No internal modifications are required for any position. The badge rotation ensures the brand remains in the correct position.

Multi-position Air Handler Configurations:

• Vertical Downflow: As shipped. Features refrigerant connections and downflow condensate drains.
• Vertical Upflow: Features refrigerant connections and upflow condensate drains.
• Horizontal Left: Features refrigerant connections and horizontal left condensate drains.
• Horizontal Right: Features refrigerant connections and horizontal right condensate drains.

Note: Minimum unit clearances are provided in the outline drawing section.

Dimensions

The GAM5 air handlers are all two-piece cabinets. The following table provides dimensional data (Height, Width, Depth) for each model.

Note: GAM5 Air Handlers are all two-piece cabinets.

GAM5 Outline Drawing

The outline drawing provides detailed dimensions and clearances for installation. Key dimensions and connection types are labeled:

• Dimensions: A, B, C, D, E, F, H are labeled with specific measurements.
• Gas Line: Labeled and specified in a table (e.g., 3/4, 7/8).
• Liquid Line: Labeled and specified in a table (e.g., 3/8).
• Flow Control: Specified as TXV for all models.
• Minimum Unit Clearances: Table shows clearances to combustible material (recommended) and service clearances (recommended) for Sides, Front, Back, Inlet Duct, and Outlet Duct.