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Ensure you select the correct orifice size based on your specific tonnage requirements
Dual Gauge Ports: Includes two 1/4 inch NPT gauge ports for flexible monitoring configurations (plugs or gauges sold separately)
Professional-grade Lennox 21L99 Flame Sensor is a critical OEM replacement part designed to maintain pilot and burner safety through precise flame rectification
always verify your RPZ backflow preventer model before installation
A healthy switch will show near-zero ohms
Lochinvar & A.O. Smith 100327314 Pressure Switch Refrigerant Ensure you select the correctThe 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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