Fasco 7021-11306 Furnace Draft Inducer Exhaust Motor User Manual

1. Introduction

This manual provides essential information for the proper installation, operation, and maintenance of the Fasco 7021-11306 Furnace Draft Inducer Exhaust Motor. This motor is designed to expel exhaust gases from a furnace, ensuring safe and efficient operation of the heating system. Please read this manual thoroughly before installation or use to ensure safety and optimal performance.

Image 1.1: The Fasco 7021-11306 Furnace Draft Inducer Exhaust Motor. This image shows the complete motor assembly, including the blower housing and the electrical motor component. The exhaust outlet is visible on the left side of the housing.

2. Safety Information

Always observe the following safety precautions to reduce the risk of injury or damage:

• Disconnect Power: Always disconnect electrical power to the furnace before installing, servicing, or performing any maintenance on the inducer motor. Failure to do so can result in electrical shock or serious injury.
• Qualified Personnel: Installation and servicing should only be performed by a qualified HVAC technician or licensed electrician.
• Personal Protective Equipment (PPE): Wear appropriate PPE, including safety glasses and gloves, during installation and maintenance.
• Proper Wiring: Ensure all wiring connections are secure and comply with local electrical codes.
• Exhaust Gases: Be aware that the inducer motor handles combustion exhaust gases, which can be hot and contain hazardous substances. Ensure proper ventilation.
• Original Parts: Use only genuine replacement parts or approved equivalents to maintain product integrity and safety.

3. Setup and Installation

Follow these steps for the correct installation of the Fasco 7021-11306 Draft Inducer Motor:

1. Power Disconnection: Turn off the main power supply to the furnace at the circuit breaker or fuse box. Verify power is off using a voltage tester.
2. Access Old Motor: Locate the existing draft inducer motor on the furnace. It is typically connected to the exhaust vent system.
3. Disconnect Wiring: Carefully disconnect all electrical wiring from the old motor. Note the position and color of each wire for correct re-connection. Take a photograph if necessary.
4. Remove Old Motor: Unbolt or unclamp the old motor from its mounting bracket and disconnect any attached hoses or ducts.
5. Inspect Mounting Area: Clean the mounting surface and inspect for any damage or debris.
6. Install New Motor: Position the new Fasco 7021-11306 motor onto the mounting bracket. Secure it firmly with appropriate bolts or clamps. Ensure the gasket (if supplied) is properly seated to prevent leaks.
7. Connect Wiring: Reconnect the electrical wiring to the new motor, ensuring all connections are tight and match the original configuration. Refer to the furnace wiring diagram if unsure.
8. Connect Hoses/Ducts: Reattach any pressure switch hoses or exhaust ducts to the new motor. Ensure all connections are airtight.
9. Final Check: Double-check all connections, mounting, and wiring before restoring power.
10. Restore Power: Turn the main power supply back on to the furnace.
11. Test Operation: Initiate a heating cycle to verify the new inducer motor operates correctly and that there are no unusual noises or exhaust leaks.

4. Operating Principles

The Fasco 7021-11306 Draft Inducer Motor is an integral component of a modern high-efficiency furnace. Its primary function is to create a negative pressure (draft) within the furnace's combustion chamber and heat exchanger. This draft pulls fresh air into the combustion chamber for efficient burning of fuel and expels the hot combustion byproducts (exhaust gases) safely out through the furnace's vent system.

When the thermostat calls for heat, the furnace control board activates the inducer motor. The motor starts spinning, drawing air into the combustion chamber and pushing exhaust gases out. Once the control board detects sufficient draft (via a pressure switch), it allows the igniter to activate and the gas valve to open, initiating the combustion process. The inducer motor continues to operate throughout the heating cycle, ensuring proper ventilation of exhaust gases.

5. Maintenance

Regular maintenance helps ensure the longevity and efficient operation of your Fasco draft inducer motor. Perform these checks annually, or more frequently if the furnace operates in a dusty environment:

• Power Disconnection: Always disconnect power to the furnace before performing any maintenance.
• Visual Inspection: Inspect the motor and blower wheel for any signs of wear, corrosion, or damage. Check for loose wires or connections.
• Clean Blower Wheel: Over time, dust and debris can accumulate on the blower wheel, reducing efficiency and potentially causing imbalance. Carefully clean the blower wheel using a soft brush or vacuum cleaner. Avoid bending the blades.
• Check for Obstructions: Ensure the exhaust vent and the motor's intake are free from obstructions (e.g., bird nests, leaves, debris).
• Lubrication: This motor is typically sealed and does not require lubrication. Do not attempt to lubricate sealed bearings.
• Gasket Integrity: Check the integrity of the gasket between the motor and the furnace housing. Replace if cracked or damaged to prevent exhaust leaks.

6. Troubleshooting

If your furnace is experiencing issues related to the draft inducer motor, consider the following common problems and solutions:

If troubleshooting steps do not resolve the issue, it is recommended to contact a qualified HVAC technician for further diagnosis and repair.

7. Specifications

• Model Number: 7021-11306
• Brand: Fasco
• Product Dimensions: 6 x 6 x 6 inches
• Item Weight: 10 Pounds (160 Ounces)
• Manufacturer: Fasco
• ASIN: B00FEI8JCO
• First Available Date: September 24, 2013

8. Warranty and Support

For warranty information or technical support regarding your Fasco 7021-11306 Furnace Draft Inducer Exhaust Motor, please refer to the documentation provided with your furnace or contact Fasco customer service directly. Keep your purchase receipt as proof of purchase.

For general inquiries or to find authorized service providers, you may visit the official Fasco website or contact their support line.