Always verify your specific chiller's parts manual for exact HVAC part compatibility

including those from Honeywell

check the relay with a multimeter

resulting in superior superheat control even under partial load conditions

this automatic reset limit switch (CO) monitors the temperature of the air passing over the heat exchanger

Lochinvar & A.O. Smith 100166244 Pressure Switch Els PW 17895 Always verify your specific chiller'sThe Lochinvar & A. O. Smith 100166244 is a critical OEM boiler replacement part engineered for precise air pressure monitoring within high efficiency heating systems. This 1. 06" WC SPDT pressure switch is a factory certified component designed to ensure the inducer motor or blower is generating sufficient draft before allowing the ignition sequence to proceed. As a Single Pole Double Throw (SPDT) configuration, it provides versatile switching logic,