Lennox 59W74 Pressure Switch 320788-704 Operating at 230V and a

Operating at 230V and a 1075 RPM fixed speed

for applications requiring a NEMA 4X rating

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

provided the boiler utilizes a compatible 36-inch ignition lead

making it compatible with 5/32 or 1/4 inch OD polytubing

Lennox 59W74 Pressure Switch 320788-704 Operating at 230V and aThe 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