Field Controls 603400700 Air System Refrigerant making it a versatile HVAC

making it a versatile HVAC repair part for varied model years

and R384 miniature regulators

OEM Compatibility: Specifically designed to fit Honeywell TP970 and TP971 pneumatic thermostats commonly found in legacy HVAC systems

or if the switch shows no continuity at room temperature

Field Controls 603400700 Air System Refrigerant making it a versatile HVACThe Field Controls 603400700 CAS 34U Fan in a Drum Combustion Air System is a universal air supply solution engineered to provide a dedicated source of combustion air for oil or gas fired appliances. This unit is the designated replacement and cross reference for the discontinued 46266301 and 46266302 models. Designed for versatility in the field, it features dual voltage compatibility, operating on either 24VAC or 120VAC control circuits. This system