this 117-054# pressure switch prevents compressor operation under low-charge conditions or evaporator freeze-ups

5 Cv rating is optimized for 3/4" piping to maintain proper pressure drop and minimize noise in residential and commercial zones

common in complex industrial HVAC environments

and contact amperage meet your system's requirements

Finished in a durable satin chrome

Lennox 59W47 Control Board 318820-201 this 117-054# pressure switch preventsUpgrade or restore your rooftop system with the Lennox 59W47 Control Board, also identified as the Lennox 102630 01 M2 Unit Controller. This genuine OEM assembly is the central intelligence for heavy duty commercial packaged units, including the LCH210H4 02, LCH300S4 02, and LCH420H4 01 series. As a high performance HVAC circuit board replacement, it coordinates critical startup and shutdown sequences for compressors, blower motors, and economizers to