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55" WC rating is standard for specific models
or mixed air temperature sensing in various AHU and RTU configurations
for applications requiring a NEMA 4X rating
maintaining the integrity of the original factory configuration
Lennox 59W74 Pressure Switch 320788-704 55" WC rating is standardThe Lennox 59W74 Pressure Switch is a critical safety component engineered for precision monitoring of inducer motor performance and flue draft integrity. This OEM Lennox furnace pressure switch transitions at a fixed set point of . 80"wc, ensuring the combustion process only initiates when proper negative pressure is established. Featuring a Single Pole Single Throw (SPST) configuration and dual 1 4" barb connections, this switch provides a reliable
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