Lennox 59W74 Pressure Switch 320788-704 for applications requiring a NEMA

for applications requiring a NEMA 4X rating

eliminating common pressure switch lockout codes and noisy bearing vibrations that signal imminent system failure

the coil is defective and the CONT1P025240VS contactor requires replacement

55" WC rating is standard for specific models

or mixed air temperature sensing in various AHU and RTU configurations

Lennox 59W74 Pressure Switch 320788-704 for applications requiring a NEMAThe 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