Its pilot-operated design ensures a low minimum pressure drop of 2 PSI

ensuring a perfect seat in the PCO20-28 housing

6-ton air conditioning and heat pump circuits

once the heat exchanger reaches the 350°F limit

and R384 miniature regulators

Carrier 318973-401 Wiring Harness 323269-701 Its pilot-operated design ensures aWhen you are dealing with a critical failure in a furnace or air handler, the Carrier 318973 401 Main Wiring Harness is the standard for restoring electrical integrity. This OEM Carrier wiring harness is engineered with 11 color coded conductors at a total length of 44 inches, providing the precise reach and wire gauge required for high current and low voltage signal transmission. Built with high quality, flame retardant insulation, this harness