Lochinvar & A.O. Smith RLY1033 Ignition Module

The Lochinvar & A.O. Smith RLY1033 Ignition Module is a critical OEM replacement component engineered for high-performance gas-fired heating systems. Designed specifically for residential and commercial boilers, including DVN041, DVL041, and DVN051 heater models, this 24V control facilitates a precise ignition sequence and consistent flame detection. By managing the high-voltage spark and monitoring the fuel-air mixture, the RLY1033 ensures safe, efficient combustion while minimizing energy waste. Technicians rely on this electronic ignition control for its robust circuitry, which prevents intermittent ignition failures and system lockouts. This module is built to meet exact manufacturer specifications, providing seamless integration with existing Lochinvar and A.O. Smith gas trains. Whether upgrading a legacy water heater or performing a standard boiler repair, the RLY1033 module offers the advanced diagnostics and reliable switching required to maintain optimal thermal efficiency and system uptime in demanding HVACR environments.

• OEM Compatibility: Exact drop-in replacement for Lochinvar and A.O. Smith gas-fired units, including regional DVN and DVL heater series.
• Precision Diagnostics: Built-in circuitry allows for rapid troubleshooting of the ignition sequence, reducing field labor time and downtime.
• Enhanced Safety: High-performance flame sensing capabilities immediately shut down gas flow if a pilot or main burner failure is detected.
• Durable Construction: Heavy-duty internal components resist environmental stress, ensuring long-term reliability in commercial boiler rooms.

• Is the RLY1033 compatible with older 120V ignition systems? This specific module is a 24V component. Always verify your transformer output and system wiring diagram to ensure proper voltage matching before installation.
• Will this module work for both natural gas and liquid propane units? Yes, the RLY1033 is designed to control the ignition timing for both fuel types, provided the gas valve and orifices are correctly configured for the specific application.
• What are the symptoms of a failing ignition module? Common indicators include repeated sparking without main burner ignition, immediate system lockouts, or lack of voltage signal to the gas valve during the startup cycle.

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.