Lennox Y4749 Replacement Mod
The Lennox Y4749 serves as the primary Pulse Furnace Replacement Mod, specifically engineered to replace the legacy G891TCA series direct spark ignition controls. This Baso BGN891-2C module is a critical 24V component for maintaining the unique combustion cycle of the Lennox Pulse furnace, providing precise timing for pre-purge, trial for ignition, and inter-purge sequences. As a veteran-grade furnace ignition control board, it is designed for a wire-for-wire swap from the original Johnson Controls G891 (blue) units. The kit includes a 6-pin jack plug harness and 1/4-inch quick-connect terminals for the spark generator wire, ensuring a secure connection to the direct spark ignition (DSI) system. Licensed contractors will find this Lennox OEM replacement part essential for resolving common "no-heat" calls on G14 and G21 models. By integrating the latest HVAC replacement controls, you ensure stable flame sensing and reliable blower motor orchestration across 50/60 Hz line frequencies.
Key Benefits:
- Direct Cross-Reference Compatibility: Designed to replace a wide range of legacy part numbers including 60J00, 73K86, 97H02, and 86H30 without extensive field modifications.
- Precision Timing Cycles: Features a factory-set 30-second pre-purge and a 5-try ignition sequence at 8 seconds per trial to optimize safety and fuel efficiency.
- Diagnostic Capability: Includes an onboard status LED to assist technicians in rapid troubleshooting of flame sense current and safety switch faults.
- Comprehensive Installation Kit: Ships with a dedicated jumper wire, resistor (for specific non-pulse applications), and spade connectors to facilitate a professional-grade installation.
Common Questions:
- Can this module be used for both Natural Gas and Propane applications? Yes, the Lennox Y4749 is rated for both fuel types when installed according to the included Baso BGN891 instructions.
- How do I handle the different footprint of the new Baso board? Since the BGN891-2C may have a different mounting pattern than the original G891, you may need to utilize the included instructions to secure at least one existing screw hole and drill a second for stability.
- Does this kit include the spark wire? The kit provides the 1/4-inch Q.C. terminals needed to join your existing spark wire to the new ignition module.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Lennox Y4749 Replacement Mod
The Lennox Y4749 serves as the primary Pulse Furnace Replacement Mod, specifically engineered to replace the legacy G891TCA series direct spark ignition controls. This Baso BGN891-2C module is a critical 24V component for maintaining the unique combustion cycle of the Lennox Pulse furnace, providing precise timing for pre-purge, trial for ignition, and inter-purge sequences. As a veteran-grade furnace ignition control board, it is designed for a wire-for-wire swap from the original Johnson Controls G891 (blue) units. The kit includes a 6-pin jack plug harness and 1/4-inch quick-connect terminals for the spark generator wire, ensuring a secure connection to the direct spark ignition (DSI) system. Licensed contractors will find this Lennox OEM replacement part essential for resolving common "no-heat" calls on G14 and G21 models. By integrating the latest HVAC replacement controls, you ensure stable flame sensing and reliable blower motor orchestration across 50/60 Hz line frequencies.
Key Benefits:
- Direct Cross-Reference Compatibility: Designed to replace a wide range of legacy part numbers including 60J00, 73K86, 97H02, and 86H30 without extensive field modifications.
- Precision Timing Cycles: Features a factory-set 30-second pre-purge and a 5-try ignition sequence at 8 seconds per trial to optimize safety and fuel efficiency.
- Diagnostic Capability: Includes an onboard status LED to assist technicians in rapid troubleshooting of flame sense current and safety switch faults.
- Comprehensive Installation Kit: Ships with a dedicated jumper wire, resistor (for specific non-pulse applications), and spade connectors to facilitate a professional-grade installation.
Common Questions:
- Can this module be used for both Natural Gas and Propane applications? Yes, the Lennox Y4749 is rated for both fuel types when installed according to the included Baso BGN891 instructions.
- How do I handle the different footprint of the new Baso board? Since the BGN891-2C may have a different mounting pattern than the original G891, you may need to utilize the included instructions to secure at least one existing screw hole and drill a second for stability.
- Does this kit include the spark wire? The kit provides the 1/4-inch Q.C. terminals needed to join your existing spark wire to the new ignition module.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
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Description
The Lennox Y4749 serves as the primary Pulse Furnace Replacement Mod, specifically engineered to replace the legacy G891TCA series direct spark ignition controls. This Baso BGN891-2C module is a critical 24V component for maintaining the unique combustion cycle of the Lennox Pulse furnace, providing precise timing for pre-purge, trial for ignition, and inter-purge sequences. As a veteran-grade furnace ignition control board, it is designed for a wire-for-wire swap from the original Johnson Controls G891 (blue) units. The kit includes a 6-pin jack plug harness and 1/4-inch quick-connect terminals for the spark generator wire, ensuring a secure connection to the direct spark ignition (DSI) system. Licensed contractors will find this Lennox OEM replacement part essential for resolving common "no-heat" calls on G14 and G21 models. By integrating the latest HVAC replacement controls, you ensure stable flame sensing and reliable blower motor orchestration across 50/60 Hz line frequencies.
Key Benefits:
- Direct Cross-Reference Compatibility: Designed to replace a wide range of legacy part numbers including 60J00, 73K86, 97H02, and 86H30 without extensive field modifications.
- Precision Timing Cycles: Features a factory-set 30-second pre-purge and a 5-try ignition sequence at 8 seconds per trial to optimize safety and fuel efficiency.
- Diagnostic Capability: Includes an onboard status LED to assist technicians in rapid troubleshooting of flame sense current and safety switch faults.
- Comprehensive Installation Kit: Ships with a dedicated jumper wire, resistor (for specific non-pulse applications), and spade connectors to facilitate a professional-grade installation.
Common Questions:
- Can this module be used for both Natural Gas and Propane applications? Yes, the Lennox Y4749 is rated for both fuel types when installed according to the included Baso BGN891 instructions.
- How do I handle the different footprint of the new Baso board? Since the BGN891-2C may have a different mounting pattern than the original G891, you may need to utilize the included instructions to secure at least one existing screw hole and drill a second for stability.
- Does this kit include the spark wire? The kit provides the 1/4-inch Q.C. terminals needed to join your existing spark wire to the new ignition module.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
