It serves as the primary HVAC defrost control center

using a standard band or thru-bolt configuration

Common Questions: What are the signs that a 30032020 control board needs replacement

making it a staple for commercial boiler feeds and industrial heating loops

System Longevity: Prevents low suction pressure and compressor short-cycling in low-ambient environments

Lochinvar & A.O. Smith 100111317 Pressure Switch 326010-701 It serves as the primaryThe Lochinvar & A. O. Smith 100111317 Pressure Switch is a critical OEM safety component engineered for precise airflow verification in high efficiency water heaters and boilers. This normally open air pressure switch is calibrated to a fixed set point of 0. 20" WC (Water Column), ensuring the combustion blower is generating sufficient negative pressure before the ignition sequence initiates. As a genuine 100111317 replacement part, it provides the