Nordyne 903479 Heat Exchanger 30067439-890 the lower thermostat controls the

the lower thermostat controls the bottom element to maintain the overall tank temperature after the upper thermostat has satisfied the initial demand

Operating on 120/230V dual-voltage input

ensuring a versatile and secure mechanical connection

this manual-reset alternative provides the reliability required by professional contractors for residential and light commercial forced-air applications

How do I adjust the pressure setting on this regulator

Nordyne 903479 Heat Exchanger 30067439-890 the lower thermostat controls theThe Nordyne 903479 Heat Exchanger is an OEM primary heat exchanger assembly engineered for high efficiency gas furnaces and packaged systems. Constructed from rugged aluminized and stainless steel components, this assembly is designed to handle the thermal stress of recurring combustion cycles while maintaining critical airflow integrity. As a veteran grade replacement part, it serves as the core thermal transfer component, preventing combustion gases