this auxiliary block is designed to snap directly onto standard Copeland 90A contactors and is the verified successor to the older 912-0001-17 series

Standard brazing equipment and nitrogen purging are required to ensure a contaminant-free and secure installation into the copper refrigerant circuit

Integration is streamlined via USB connection for program transfers and optional Ethernet capabilities for remote real-time control and firmware updates

Technicians should inspect for visible cracks

rebuilding the internal stack is the standard protocol for maintaining residential and commercial plumbing systems

International Environmental 70556381 Motor 320735-701 this auxiliary block is designedThe International Environmental 70556381 Motor is a direct drive, high efficiency 1 4 HP blower motor designed specifically for integration with IEC fan coil units. Operating at 208 230V, this single phase powerhead is engineered to meet the static pressure requirements of commercial HVAC applications. As a critical OEM replacement motor, the 70556381 ensures internal mechanical clearances and electrical load profiles match factory specifications,