American Standard HVAC BAYDMPR054A Manual

The American Standard BAYDMPR054A is a high-performance HVAC damper motor designed for precise airflow control in residential and light commercial zoning systems. It features 24VAC operation, adjustable torque, spring return fail-safe, and compatibility with most zoning control panels. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting to System 7. Operation and Calibration 8. Safety Features 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: 24VAC synchronous motor, adjustable torque mechanism, spring return assembly, manual override lever, mounting bracket, and wiring terminals.

Feature	Description
Motor Type	24VAC Synchronous, 3.5W power consumption
Torque Adjustment	Field adjustable from 25 to 40 lb-in
Fail-Safe	Spring return to closed position on power loss
Manual Override	Lever for manual damper positioning
Mounting	Universal bracket for round or rectangular ducts
Wiring	Screw terminals for 24VAC and control signals
Operating Temp	-40°F to 150°F (-40°C to 65°C)
Position Feedback	Optional auxiliary switch for end position sensing
Rotation	90° total travel (0° to 90°)
Compliance	UL and cUL listed

Installation

Unpack and inspect contents. Ensure proper mounting location on duct.

Mount damper motor: Attach bracket to duct using provided hardware.
Connect damper shaft: Secure motor coupling to damper shaft; ensure alignment.
Wire connections: Connect 24VAC power and control wires to appropriate terminals.
Secure wiring: Use strain relief and ensure no pinched wires.

WARNING! Disconnect power before installation. Ensure damper moves freely before attaching motor.

First-Time Setup

Power on system; calibrate damper motor.

Set torque adjustment: Use torque adjustment screw to match damper requirements.
Calibrate end positions: Use manual override to find fully closed and open positions.
Test operation: Apply 24VAC to verify smooth rotation and spring return.
Integrate with control panel: Follow zoning system manual for programming.

CAUTION! Do not exceed maximum torque rating. Over-tightening may damage motor or damper.

Specifications

Model: BAYDMPR054A
Voltage: 24VAC ±10%, 50/60Hz
Power Consumption: 3.5W nominal
Torque Range: 25 to 40 lb-in (adjustable)
Rotation Angle: 90° (0° closed, 90° open)
Travel Time: Approximately 30 seconds full travel
Spring Return: Returns to closed position on power loss
Mounting: Universal bracket for 4" to 12" ducts
Operating Temperature: -40°F to 150°F (-40°C to 65°C)
Weight: 2.2 lbs (1.0 kg)

Controls and Settings

Motor controlled by zoning panel signals. Manual override lever for service.

Torque Adjustment: Use hex key on adjustment screw; clockwise increases torque.

Wiring Terminals: 24VAC (COM, HOT), Control (OPEN, CLOSE), Aux Switch (NO, COM, NC).

Calibration: Set end stops using manual lever and control signals.

Fail-Safe Mode: Spring automatically returns damper to closed when power is lost.

Connecting to System

Connect to zoning control panel and 24VAC transformer.

Turn off power to HVAC system.
Connect 24VAC wires to COM and HOT terminals.
Connect control wires from panel to OPEN and CLOSE terminals.
Connect auxiliary switch if used for position feedback.
Restore power and test.

Tip: Use 18 AWG wire minimum. Ensure polarity is correct for 24VAC connections.

Operation and Calibration

Normal operation controlled by zoning panel. Manual calibration steps:

Disconnect power and use manual lever to find fully closed position.
Reconnect power; send OPEN signal from control panel.
Observe travel; adjust torque if damper does not reach full open.
Test spring return by disconnecting power.
Verify auxiliary switch operation if installed.

WARNING! Do not force manual lever during powered operation. Disconnect power first.

Safety Features

Spring Return Fail-Safe: Automatically closes damper on power loss to maintain system balance. Thermal Protection: Motor includes internal thermal cutoff to prevent overheating. Manual Override: Allows damper positioning during service without power.

Care & Maintenance

Inspect quarterly for proper operation. Clean exterior with dry cloth only.

CAUTION! Do not lubricate motor or spring mechanism. Keep vents clear of debris.

Regulatory Information

UL Listed under UL 60730-1 and UL 60730-2-14. cUL Listed to CAN/CSA C22.2 No. 60730-1 and No. 60730-2-14. FCC Part 15 Class B compliant. For technical support, contact American Standard Heating & Air Conditioning at 1-800-428-4328 or visit www.americanstandardair.com.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Motor does not move	No power, wiring fault	Check 24VAC at terminals; verify control signals; inspect wiring.
Damper does not reach full open/close	Torque setting, mechanical binding	Adjust torque; ensure damper moves freely manually.
Motor hums but doesn't move	Low voltage, mechanical obstruction	Check voltage ≥ 21.6VAC; remove obstruction from damper.
No spring return	Spring mechanism fault	Disconnect power; manually cycle damper; replace if spring fails.
Aux switch not functioning	Wiring, switch alignment	Check switch wiring; adjust actuator position relative to damper.

Reset: Cycle power. If problem persists, check control panel programming.

Service: 1-800-428-4328; www.americanstandardair.com