Carrier HH57AC078 Enthalpy Sensor 321894-706 or 5-wire compatibility covers most

or 5-wire compatibility covers most standard low voltage HVAC configurations

designed to handle the high-cycle demands of warehouse and workshop environments

it manages pressure ranges from 5 to 150 PSI for air

This gauge is typically utilized in hydronic heating systems and commercial boilers where monitoring operating pressure and supply water temperature is essential for safety

Carrier HH57AC078 Enthalpy Sensor 321894-706 or 5-wire compatibility covers mostEnsure your commercial HVAC systems operate with maximum efficiency using the Carrier HH57AC078 Enthalpy Sensor. This solid state OEM replacement part is essential for managing economizer control by accurately measuring both relative humidity and temperature. This dual sensing capability allows the system to calculate total heat content (enthalpy), enabling smart decisions between utilizing outdoor air or mechanical cooling to maintain setpoint