It is rated for an operational voltage of 690V and an impulse withstand voltage of 6kV

maintaining circuit integrity under continuous operation

This OEM Lennox part is a manual reset

It plays a vital role in HVAC combustion safety by ensuring that hazardous exhaust gases are properly channeled into the flue vent

gradual gas release to prevent combustion surges and "hard starts" that can stress the heat exchanger

Nordyne 669770 TXV 322057-301 It is rated for anThe Nordyne 669770 TXV is a precision engineered OEM thermal expansion valve designed for residential and light commercial HVAC applications. Built specifically for R410A refrigerant systems, this metering device is calibrated for 2 3 ton capacities, providing accurate flow regulation to maintain target superheat levels. By monitoring evaporator temperatures and modulating liquid refrigerant delivery, the 669770 TXV prevents liquid slugging and