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13CL ensures the system operates within tight OEM safety margins without nuisance tripping
Direct Mount Design: Reduces labor time with a simple shaft coupling mechanism that eliminates the need for complex mounting brackets
making it ideal for standard three-wire control configurations
Standardized Power: Simple 120V pump installation with predictable current draw for existing control boards and relays
allowing for stable operation in high-heat environments up to 250°F with AH actuators
Lennox 36W49 Pressure Switch 321894-709 13CL ensures the system operatesThe Lennox 36W49 Pressure Switch is a critical safety component designed for specific Lennox furnace models to monitor the negative pressure generated by the inducer motor. This SPST furnace pressure switch is factory calibrated to a 0. 55" WC set point, ensuring the combustion process only initiates when proper venting and drafting are established. Constructed with a durable diaphragm and high grade electrical contacts, this direct replacement
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