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Professional-grade Lennox 21L99 Flame Sensor is a critical OEM replacement part designed to maintain pilot and burner safety through precise flame rectification
Ensure you select the correct orifice size based on your specific tonnage requirements
always verify your RPZ backflow preventer model before installation
85" PF SPST
Standardized Compatibility: Features standard 3/4 inch NPT solenoid threading for seamless integration into existing piping manifolds
Lochinvar & A.O. Smith 100327314 Pressure Switch Refrigerant Professional-grade Lennox 21L99 Flame SensorThe Lochinvar & A. O. Smith 100327314 Pressure Switch is a critical safety component designed for high performance HVAC system diagnostics and forced draft combustion control. As a technical professional, you know that maintaining precise pressure differential is non negotiable for safe burner operation. The 100327314 serves as the direct replacement part for legacy models 100166196 and PRS2705. This air pressure switch is engineered to sense the
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