Lochinvar & A.O. Smith 100110820 Pressure Switch 324846-701 It is designed to open

It is designed to open automatically when powered and close upon power loss or safety limit interruption

Biflow Capability: Provides accurate expansion control in both directions

Proper installation of this 310203-752 burner cell requires new gaskets and high-temp sealant to maintain airtight integrity

making it a direct-fit solution for technicians servicing Carrier

this heavy-duty pan effectively collects and directs moisture away from the internal furnace components

Lochinvar & A.O. Smith 100110820 Pressure Switch 324846-701 It is designed to openThe Lochinvar & A. O. Smith 100110820 Pressure Switch is a critical safety component designed for high efficiency gas fired boiler and water heater systems. This 1. 42" air pressure switch (1. 42 in. WC) functions as a differential pressure switch, ensuring the combustion blower is generating sufficient airflow before allowing the ignition sequence to proceed. As a veteran technician knows, a failing HVAC pressure switch often results in a "no heat"