the ASCO 8210G103 requires a minimum differential pressure of 5 PSI to reliably open and close the internal diaphragm

Key Benefits Direct OEM Compatibility: Specifically engineered for York heating systems

Includes high-performance filter driers to maintain refrigerant moisture levels and oil purity

Easy Installation: Specifically designed for the Aprilaire 1110

it ensures proper flue gas drafting

EWC Controls ZXM-2 Expansion Panel 319847-401 the ASCO 8210G103 requires aThe EWC Controls ZXM 2 is a dedicated two zone expansion module engineered specifically for use with the Ultrazone UZC 4 control system. This HVAC zone expansion panel allows contractors to scale commercial or residential zoning systems from the base four zones up to a maximum of 22 zones by daisy chaining multiple units using standardized RJ 45 patch cables. Each ZXM 2 expansion board provides independent control for two additional zones, featuring