TRANE BAYEAAC04BK1B Electric Heaters for Air Handler Installation Guide

TRANE BAYEAAC04BK1B Electric Heaters for Air Handler Installation Guide

Section 1. Safety Information

⚠ WARNING
SAFETY HAZARD! This information is intended
for use by individuals possessing adequate backgrounds of electrical and mechanical experience. Any attempt to repair a central air conditioning product may result in personal injury and/or property damage. The manufacturer or seller cannot be responsible for the interpretation of this information, nor can it assume any liability in connection with its use.

⚠ WARNING
HAZARDOUS VOLTAGE! Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/tagout procedures to ensure the power can not be inadvertently energized. Failure to disconnect power before servicing could result in death or serious injury.

⚠ WARNING
LIVE ELECTRICAL COMPONENTS! During
installation, testing, servicing, and troubleshooting of this product, it may be necessary to work with live electrical components. Failure to follow all electrical safety precautions when exposed to live electrical components could result in death or serious injury.

⚠ CAUTION
SAFETY HAZARD! Sharp Edge Hazard. Be careful
of sharp edges on equipment or any cuts made on sheet metal while installing or servicing. Personal injury may result.

Section 2. General Information

This electric heater accessory is designed to provide power directly to the air handler from the accessory heater’s power supply, eliminating the need for additional circuits. The power and control wiring each use a single wire harness to connect the heater and the air handler.

1. Check the unit heater label to confirm that the selected heater is approved for use with the air handler in the installed configuration. For some heaters, a corresponding secondary nameplate label is included. Place the label within the heater data table on the air handler nameplate.
2. Check the components received for damage. Report any defects or shortages to the transportation company immediately.
3. Be sure the power supply matches the listing shown on the heater nameplate.

Section 3. Heater Assembly Labeled

Section 4. Heater Selection

Determine which heater best fits your application needs. In addition to electrical considerations, you must know your cabinet size and the range of heaters which fit that cabinet.

4.1 Air Handler Model Number Matrix

Step 1 – Measure your cabinet and use the Air Handler Model Number Matrix to determine your cabinet size.

Step 2 – Use the Heater Model Number Matrix to determine which heaters will fit in your cabinet and to determine if you will have to modify the heater to fit the cabinet.

The heater in this example will fit into cabinets A, B, & C. From Step 1 we know that the heater needs to be sized to fit in a B cabinet.

See Section 5 for instructions for modifying your heater to fit various cabinet sizes.
Record Your Heater Size = _____

This matrix is provided as an example only.

Section 5. Adjust Heater

Section 6. Install Heater

STEP 1 – Remove Heater Compartment Panel.

STEP 2 – Disconnect & Dispose of Pigtail Harness.

1. Unscrew the wire tie that is holding the pigtail harness to the cabinet.
2. Unplug and dispose of pigtail harness.

STEP 3 – Insert heater assembly into heater compartment.

1. Move factory wiring out of the way and into the grooves provided in cabinet.
2. Slide heater into heater compartment of air handler.

STEP – 4 Lock Retainer tabs.
Note: Retainer tabs are used to secure the heater inside of the heater compartment.

1. Slide retainer tab into recess in air handler cabinet.
2. Tighten screws to hold tab securely.
3. Repeat actions to secure the other tab.
   Note: For A cabinet widths, only the right side retainer tab must be installed.

Route High Voltage wiring to unit.
STEP 5 – Select a conduit entry point. Drill a hole for the desired conduit size on units without a plug. A locating target is identified on these units.

Note: Some models may have a remoulded conduit connection with plug. If a connection hole is already present, remove the plug from the entry point and use as is.

1. Select the entry point you will use to bring in your high voltage wiring.
2. Remove plug from the entry point.

STEP 6 – Route conduit, if used, and wiring to the entry point and connect.

1. Use one hand to secure the factory supplied conduit nut from the inside of heater compartment.
2. Connect field supplied 3/4″ or 1-1/2″ conduit to conduit nut.

Note: Reducing bushings may be required for your application.

STEP 8 – Connect high voltage wiring

1. Connect the wiring to the lugs on the breaker models or to the terminal block on the lug models as illustrated.
2. Connect the ground wire to the ground lug.
3. Connect the 3-pin plug on the heater to the 3-pin plug in the air handler case.

Note: Minimum terminal screw torque is 45 in-lbs.

STEP 9 – Install the seal plate. Breaker models only.

1. Place the seal plate over the breaker so the tab on the right side is in place.
2. nap on the left side of the seal plate that has the slot by the tab.

STEP 10 – Connect low voltage wiring.

1. Connect the 4-pin low voltage harness to Electric Heat Control as shown.
2. If installing in TAMX Air Handler models, connect the 2-pin resistor ID assembly (tie wrapped to Electric Heat Controls harness) into the 2-pin heater ID harness as shown.
3. All other Air Handler models, the 2-pin resistor ID assembly is not used and should be left disconnected.

STEP 11 – Place Wiring Diagram.

1. Attach the wiring diagram, included in the documentation packet, to the back of the heater compartment panel.

Note: Breaker models only.
STEP 12 – Remove breaker cover.

1. Remove 5/16 hex screw on back of breaker cover.
2. Remove and discard the two piece breaker cover from the heater compartment panel.

STEP 13 – Replace Heater compartment panel on air handler.

STEP 14 – For the TAM9 and TAMGB only, set the heater size in the Configuration Menu.
Note: For TAMX units, the heater size will be automatically configured by the AHC if the resistor ID assembly plug (see Step 10) is installed. The airflow level (Low, Med, High) will still need to set in the Tech App.

Make heater connections per hookup diagrams.

Heater Field Wiring

Notes:

1. For multiple stages of electric heat, jumper W1, W2, and W3 together if comfort control has only one stage of heat.
2. 3 phase heaters require that the AFC board be configured for 3-phase heat.
3. Thermostat G signal must be configured to bring fan on with electric heat.
   Reference the air handler Installer’s Guide for details on low voltage wiring.

Section 7. Tables

Important: The BAYEA electric heat accessory may include up to a combination of three 60 amp circuit breakers to provide an electrical disconnect for service personnel that is intended to help protect internal electrical components in the event of a short circuit or ground fault. As designed, the circuit breakers supplied in the BAYEA accessory DO NOT provide overcurrent protection of the branch circuit. Therefore, the branch circuit(s) shall be sized and protected according to the unit nameplate.

Section 8. Heater Operation

8.1 GAM5B Heater Operation
Electric Heating

1. R-W contacts close on the comfort control sending 24VAC to the W terminal on the electronic fan relay. 24VAC is also sent to energize the heat relay.
2. R-G contacts close on the comfort control sending 24VAC to the G terminal on the electronic fan relay. (The combination of 24VAC on terminals W and G on the electronic fan relay will close the high speed contacts of the electronic fan relay)
3. WJ contacts on the electronic fan relay close providing an interlock circuit to allow the electric heat relays to operate.
   The comfort control must be setup to control R-G contacts with a call for electric heat. This closes the interlock circuit and allows the heat relay circuit to be energized.

8.2 TAM4 Heater Operation
Electric Heating

1. R-W contacts close on the comfort control sending 24VAC to energize the heat relay.
2. R-G contacts close on comfort control sending 24VAC to the fan relay
3. Relay contacts 1 and 3 close
4. The blower will now run on the selected speed. Speed is field selectable
5. Contacts 4 & 6 on the fan relay close providing the interlock circuit to allow the electric heat relays to operate
   The comfort control must be setup to control R-G contacts with a call for electric heat. This closes the interlock circuit and allows the heat relay circuit to be energized.

8.3 TAM9, TAMX / TAMGB Heater Operation
Electric Heating
Note: The TAM9, TAMX / TAMG can use a communicating or 24 volt comfort control to send a heater request to the AFC/AHC.

1. When a request for electric heat is received, the AFC/AHC will energize the on board 24 volt relays per the amount of heat requested from the thermostat and the size of the heater installed.
2. The AFC/AHC sends a command to the serial communicating blower motor to run proper airflow and close the blower interlock relay on the EHC.

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.

18-GJ08D1-10C-EN 07 Jun 2022 Supersedes 18-GJ08D1-10B-EN (October 2020)

References

• Trane Heating & Air Conditioning

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