Introduction
This manual provides essential information for the safe and effective use of the Fasco 36HWC18A Furnace Draft Inducer/Exhaust Vent Venter Motor. This component is designed to expel exhaust gases from your furnace, ensuring proper ventilation and efficient operation of your heating system.
The Fasco 36HWC18A is a brand new, upgraded replacement motor engineered for reliability and performance in compatible furnace systems.
Product Overview
Image: The Fasco 36HWC18A Furnace Draft Inducer/Exhaust Vent Venter Motor. This image shows the complete assembly, including the motor housing and the venter fan enclosure with its exhaust port.
Safety Information
Always prioritize safety when working with furnace components. Failure to follow these instructions could result in property damage, personal injury, or death.
- Disconnect Power: Before performing any installation, maintenance, or troubleshooting, ensure the main power supply to the furnace is completely disconnected at the circuit breaker or fuse box.
- Professional Installation Recommended: Installation of this component should ideally be performed by a qualified HVAC technician. Improper installation can lead to system malfunction or safety hazards.
- Electrical Safety: Be aware of electrical hazards. Do not touch live wires. Ensure all wiring connections are secure and conform to local electrical codes.
- Hot Surfaces: Furnace components can become very hot. Allow the furnace to cool down completely before handling any parts.
- Sharp Edges: Be cautious of sharp edges on sheet metal or other components during installation. Wear appropriate protective gloves.
- Carbon Monoxide: Improperly installed or malfunctioning exhaust systems can lead to carbon monoxide leaks. Ensure all exhaust connections are sealed properly. Install and maintain carbon monoxide detectors in your home.
Setup and Installation
This section provides general guidelines for the installation of the Fasco 36HWC18A inducer motor. Specific steps may vary depending on your furnace model. Refer to your furnace's service manual for detailed instructions.
- Power Disconnection: Turn off all electrical power to the furnace at the main service panel. Verify power is off using a voltage tester.
- Access the Inducer Motor: Locate and carefully remove the access panels or covers that provide access to the existing inducer motor.
- Disconnect Wiring and Hoses: Disconnect the electrical wiring from the old inducer motor. Note the position of each wire for correct re-connection. Disconnect any pressure switch hoses or drain lines connected to the inducer assembly.
- Remove Old Motor: Unbolt or unfasten the old inducer motor from its mounting bracket or furnace housing. Carefully remove it.
- Inspect and Clean: Inspect the mounting area for any debris or corrosion. Clean as necessary.
- Install New Motor: Position the new Fasco 36HWC18A inducer motor in place. Secure it using the appropriate bolts or fasteners. Ensure a tight and secure fit.
- Reconnect Wiring and Hoses: Reconnect the electrical wiring to the new motor, ensuring all connections are tight and correct. Reattach any pressure switch hoses or drain lines.
- Seal Connections: Ensure all exhaust connections are properly sealed to prevent carbon monoxide leaks. Use high-temperature sealant if recommended by the furnace manufacturer.
- Restore Power and Test: Replace all access panels. Restore power to the furnace. Initiate a heating cycle to test the operation of the new inducer motor. Listen for unusual noises and check for proper exhaust venting.
Operating Principles
The furnace draft inducer motor plays a critical role in the safe and efficient operation of your furnace. When the thermostat calls for heat, the inducer motor typically starts first. Its primary functions include:
- Pre-Purge: Before ignition, the inducer motor creates a negative pressure (draft) within the combustion chamber and heat exchanger, expelling any residual combustion gases or stale air.
- Combustion Air Supply: It helps draw in fresh air for the combustion process.
- Exhaust Venting: During and after combustion, the motor expels the hot exhaust gases (flue gases) safely out of the building through the vent pipe.
- Pressure Switch Activation: The negative pressure created by the inducer motor activates a pressure switch, which signals the furnace control board that it is safe to proceed with ignition. If sufficient draft is not established, the furnace will not ignite, acting as a safety mechanism.
The Fasco 36HWC18A ensures these critical functions are performed reliably, contributing to the overall safety and performance of your heating system.
Maintenance
The Fasco 36HWC18A inducer motor is designed for durability and typically requires minimal direct maintenance. However, regular furnace maintenance is crucial for its longevity and the overall health of your heating system.
- Annual Professional Inspection: Have your furnace professionally inspected and serviced annually by a qualified HVAC technician. They can check the inducer motor for proper operation, excessive noise, or signs of wear.
- Check Venting System: Periodically inspect the furnace's exhaust vent pipe for blockages (e.g., bird nests, debris), cracks, or disconnections. Ensure the vent termination outside is clear.
- Clean Pressure Switch Hoses: If accessible, ensure the small rubber hoses connecting to the pressure switch are clear of condensation or debris.
- Keep Area Clear: Ensure the area around the furnace is clear of obstructions to allow for proper airflow and prevent debris from entering the inducer motor.
Do not attempt to lubricate the motor unless specifically instructed by the manufacturer, as most modern inducer motors are sealed and permanently lubricated.
Troubleshooting
If your furnace is not operating correctly, the inducer motor may be a contributing factor. Always ensure power is disconnected before inspecting components.
| Symptom | Possible Cause | Action |
|---|---|---|
| Inducer Motor Not Starting | No power, faulty pressure switch, seized motor, faulty control board. | Check furnace power. Inspect pressure switch hoses for blockages. If motor hums but doesn't spin, it may be seized. Consult a professional. |
| Inducer Motor Runs, but Furnace Doesn't Ignite | Faulty pressure switch, blocked vent, faulty igniter, gas supply issue. | Check vent for obstructions. Inspect pressure switch hoses. Verify gas supply. If issues persist, professional diagnosis is required. |
| Loud Noises from Inducer Motor | Worn bearings, debris in blower wheel, loose mounting. | Disconnect power. Inspect blower wheel for debris. Check mounting bolts. If noise persists, motor may need replacement. |
| Furnace Cycles On/Off Rapidly (Short Cycling) | Blocked vent, faulty pressure switch, overheating. | Ensure vent is clear. Check pressure switch and its hoses. This often indicates a safety lockout; professional inspection is recommended. |
Warning: Many furnace issues require specialized tools and knowledge. If you are unsure about any troubleshooting step, or if the problem persists, contact a certified HVAC technician.
Specifications
- Model: 36HWC18A
- Product Type: Furnace Draft Inducer/Exhaust Vent Venter Motor
- Brand: Fasco
- Product Dimensions: Approximately 6 x 6 x 6 inches
- Item Weight: Approximately 10 Pounds (160 Ounces)
- ASIN: B00FG3VWYE
- Manufacturer: Fasco
Warranty and Support
For specific warranty information regarding your Fasco 36HWC18A inducer motor, please refer to the documentation provided with your purchase or contact Fasco directly. Warranty terms typically cover manufacturing defects for a specified period.
If you require technical support, have questions about installation, or need to inquire about warranty claims, please contact the manufacturer or your authorized Fasco dealer. Professional assistance is recommended for all service and repair needs.
While this product may be eligible for extended protection plans offered by retailers, these are separate from the manufacturer's warranty. For details on such plans, please consult the provider of the protection plan.
