Supco Furnace Sini 80 Volt Nitride Igniter User Manual

1. Introduction

This manual provides essential information for the safe and effective use of the Supco Furnace Sini 80 Volt Nitride Igniter, model SSN0145. This igniter is a replacement component designed for specific Trane manufactured furnaces, including American Standard models, and replaces part numbers D343692, IGN00145, and IGN145.

Important Safety Information: Installation and servicing of furnace components should only be performed by qualified technicians. Always disconnect power to the furnace before attempting any installation, maintenance, or troubleshooting. Failure to follow these instructions could result in property damage, personal injury, or death. This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

2. Product Overview

The Supco SSN0145 is an 80 Volt Silicon Nitride (SiNi) igniter, a critical component in modern gas furnaces responsible for igniting the gas burner. It operates by heating to a high temperature, creating a hot surface that ignites the gas-air mixture. This igniter is known for its durability and quick heating capabilities.

Figure 2.1: The Supco SSN0145 igniter shown with its packaging and included mounting screws.

Key features include:

• Supco Furnace Ignitor part number SSN0145
• 80 Volt SiNi Nitride Ignitor
• Mounting screws included for installation
• Designed to fit specific Trane manufactured furnaces, including American Standard
• Direct replacement for numbers D343692, IGN00145, and IGN145

3. Package Contents

Upon opening the package, verify that all components are present and undamaged:

• 1 x Supco SSN0145 Furnace Igniter
• Mounting Screws (typically 3)

If any items are missing or damaged, please contact your supplier immediately.

4. Installation

Note: Installation should only be performed by a qualified HVAC technician. Incorrect installation can lead to furnace malfunction, fire, or electric shock.

1. Safety First: Turn off all electrical power to the furnace at the main circuit breaker or fuse box. Turn off the gas supply to the furnace.
2. Access the Igniter: Locate the existing igniter within the furnace. This typically involves removing an access panel.
3. Disconnect Wiring: Carefully disconnect the electrical connector from the old igniter. Note the routing of the wires.
4. Remove Old Igniter: Unscrew and remove the old igniter from its mounting bracket.
5. Inspect and Clean: Inspect the area for any debris or corrosion. Clean as necessary.
6. Mount New Igniter: Attach the new Supco SSN0145 igniter to the mounting bracket using the provided screws. Ensure it is securely fastened and correctly positioned.


Figure 4.1: Side view of the igniter, illustrating its mounting bracket and ceramic base.

7. Connect Wiring: Connect the electrical connector of the new igniter to the furnace wiring harness. Ensure a secure connection.

Figure 4.2: Detailed view of the igniter's electrical connector, crucial for proper wiring.
8. Reassemble: Replace any access panels removed earlier.
9. Restore Power: Turn on the gas supply and restore electrical power to the furnace.
10. Test Operation: Initiate a heating cycle to ensure the furnace ignites properly. Observe the igniter heating and the burner lighting.

5. Operation

Once installed, the Supco SSN0145 igniter operates automatically as part of the furnace's ignition sequence. When the thermostat calls for heat, the furnace control board sends 80 volts to the igniter. The igniter rapidly heats up to a glowing temperature. Once the igniter reaches the appropriate temperature, the gas valve opens, allowing gas to flow to the burners. The hot surface of the igniter then ignites the gas, and the furnace begins its heating cycle. The igniter will then cool down until the next call for heat.

6. Maintenance

Furnace igniters are wear items and have a finite lifespan. While the Supco SSN0145 is designed for durability, regular furnace maintenance is crucial for its longevity and overall system efficiency.

• Annual Inspection: Have a qualified HVAC technician inspect your furnace annually. They can check the igniter for signs of wear, cracks, or carbon buildup.
• Cleaning: Do not attempt to clean the igniter element with abrasive materials, as this can damage the silicon nitride. If cleaning is necessary, a soft brush or compressed air may be used by a professional.
• Avoid Contamination: Keep the area around the igniter free from dust, lint, and other debris that could accumulate on the element and affect its performance.

7. Troubleshooting

If your furnace is not igniting, the igniter may be a potential cause. Always consult a qualified HVAC technician for diagnosis and repair.

• Igniter Not Glowing: If the igniter does not glow red when the furnace attempts to start, it may be faulty or not receiving power. Check electrical connections.
• Igniter Glows but No Ignition: If the igniter glows but the gas does not ignite, there might be an issue with the gas supply, gas valve, or flame sensor.
• Cracked or Damaged Igniter: Visually inspect the igniter for any cracks or physical damage. A damaged igniter will not function correctly and must be replaced.
• Frequent Failures: If igniters are failing frequently (e.g., within a few months), there might be an underlying issue with the furnace's electrical system or control board, or the igniter may be incompatible.

Caution: Do not attempt to bypass safety controls or force ignition. This can be extremely dangerous.

8. Specifications

9. Warranty and Support

For detailed warranty information regarding the Supco SSN0145 Furnace Igniter, please refer to the official Supco website or the product packaging. Warranty terms typically cover manufacturing defects for a specified period.

If you require technical support, have questions about compatibility, or need assistance with installation or troubleshooting, it is recommended to contact a qualified HVAC technician or the Supco customer support directly. Always provide the model number (SSN0145) and any relevant furnace information when seeking support.