Carrier 321702-401 Barrier 30067439-890 including central furnaces

including central furnaces

This HVAC expansion valve is built to handle the specific pressure-temperature relationship of R-22 refrigerant

though a multimeter is recommended to verify proper voltage input and output across the terminal block during commissioning

meaning it drops right into existing 1-1/2 inch flanged piping without the need for extensive re-sweating or manifold modifications

It automatically switches the thermostat's internal circuit to the correct mode (heating or cooling) based on whether the central chiller or boiler is active

Carrier 321702-401 Barrier 30067439-890 including central furnacesThe Carrier 321702 401 Barrier is an OEM part for use with various Carrier Bryant models. It is ideal to create a barrier between the corrosion causing elements and the coil. This barrier ships out factory direct to ensure best in class quality. Use this low voltage barrier to replace worn out or damaged barriers.