White-Rodgers 3049-115 Flame Sensor

The White-Rodgers 3049-115 is a professional-grade mercury flame sensor engineered for precise pilot flame verification in commercial and residential heating systems. Featuring a 48-inch capillary element and a Bulb Style #20, this Type D plug-in sensor is the industry-standard HH71PD024 direct replacement. Designed for high-heat environments, the mercury-filled sensing bulb vaporizes under pilot heat, actuating a snap-action switch to prove flame before the main gas valve cycles. This HVAC flame detector provides crucial safety by preventing the release of unignited fuel. Contractors prefer the 3049-115 for its plug-in wiring configuration, which utilizes two 1/4-inch spade terminals and one pin terminal to eliminate the need for complex point-to-point field wiring. Built for durability, the mercury-actuated sensor ensures system reliability in furnaces and ignition systems requiring a mercury-style interface.

• Universal Compatibility: Serves as a direct OEM replacement for the HH71PD024 and is compatible with various heavy-duty burner applications.
• High-Temperature Resilience: The 48-inch mercury element is designed to withstand tip temperatures up to 1450°F, ensuring long-term performance in the combustion chamber.
• Installation Efficiency: The Type D plug-in design with spade and pin terminals streamlines the replacement process for service technicians.
• Precise Flame Proofing: Rapid snap-action switching reduces diagnostic errors and prevents nuisance lockouts in complex heating cycles.

• What does the White-Rodgers 3049-115 replace? It is the primary direct replacement for the HH71PD024 and replaces mercury sensors utilizing Bulb Style #17 or #18.
• Can this sensor be replaced by a gas valve model number? No. As a veteran tip, mercury flame sensors must be matched by their specific model number (3049-115) or cross-referenced via the original sensor's specifications.
• What is the terminal configuration? This unit features two 1/4-inch spade terminals and one singular pin terminal for secure, keyed electrical connectivity.

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.