universal pilot assembly engineered for standing pilot applications in commercial and industrial gas-fired equipment

Take-Apart Design: The STAS-487T shell allows for easy maintenance and core swaps without cutting the refrigerant lines

Field-tested for durability in Aaon RN and RQ series equipment

This HVAC replacement core is hermetically sealed in metal cans to maintain full activation until installation

Johnson Controls A350SS-1 Temperature System Refrigerant universal pilot assembly engineered forThe Johnson Controls A350SS 1 is a high performance electronic temperature reset system designed for veteran contractors who require precise, reliable thermal management in complex HVACR applications. Operating on a standard 24Vac supply, this System 350 module executes a dynamic reset strategy, automatically adjusting the supply temperature setpoint based on fluctuating master sensor conditions. Whether you are managing chilled water loops or