Rheem AXRD-SMCM3 - Economizer Vertical, RKNLB Series, 15 Ton - 25 Ton Downflow.
Rheem AXRD-SMCM3 Vertical Economizer - 24Volt - Fully Modulating with Single Enthalpy, Smoke Detector. This Rheem AXRD- Economizer Package is designed to save energy costs by using outdoor air for cooling and ventilation in place of mechanical cooling whenever possible. The economizer continuously monitors indoor and outdoor air conditions and compares them to a user-selected setpoint to determine if free cooling is available.