Reznor 100528 Retro Kit

The Reznor 100528 Spark Kit is a specialized ignition conversion solution designed for high-performance gas-fired heating units. Engineered as a direct Reznor OEM replacement part, this retrofit kit is specifically tailored for B25-165 AH3 and F/B 200-250 series units using natural gas. By replacing obsolete standing pilot systems with a modern electronic spark ignition, this kit significantly improves the DSI control sequence and ensures reliable combustion cycles under varied demand loads. The integrated ignition controller lockout function provides a critical safety layer, preventing fuel accumulation in the event of flame failure—a standard requirement for modern commercial HVAC installations. For veteran techs, this kit streamlines the transition from older RAM or J/C controllers to current Nortek Global HVAC standards, maintaining the structural and operational integrity of the burner box. Proper installation requires verifying the gas valve lead and flame rectification ground to ensure seamless 24V communication across PV and MV terminals.

• Enhanced Reliability: Replaces outdated standing pilot assemblies with high-efficiency electronic spark ignition, reducing fuel waste and maintenance call-backs.
• Safety Lockout: Features a dedicated ignition lockout module that interrupts gas flow if flame sensing fails during the 90-second trial for ignition.
• OEM Compatibility: Precision-matched for Reznor B and F series unit heaters, ensuring exact physical fit and electrical synchronization with existing terminal strips.
• Direct Retrofit: Designed to replace legacy hardware with minimal field modification, including essential wiring diagram updates for the burner compartment.

• Which Reznor models are compatible with this kit? This kit is specifically rated for Natural Gas units in the B25-165 AH3 and F/B 200-250 size ranges. Always verify your unit's serial number code before installation.
• Does this kit include the spark electrode? The kit provides the core DSI control board and lockout components; technicians should inspect the existing electrode and ignition cable for arcing or wear during the retrofit.
• How do I resolve a lockout error after installation? Most issues stem from flame rectification problems. Ensure the rod is clean and the ground wire has a solid, unoxidized connection to the chassis.

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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.