the D-3153 actuators this kit services are UL component recognized for use on 555/555S smoke and combination fire/smoke dampers

The Lennox 49L92 Pressure Switch is a high-precision OEM HVAC replacement part engineered for critical safety monitoring in Lennox gas furnaces and air handlers

making it suitable for modern high-pressure R410A applications

specific motor codes must be verified against the compressor frame size

check the secondary terminals for 24VAC while the primary is energized with 208/240V

Johnson Controls A-4000-632 Filter Element Els PW 17895 the D-3153 actuators this kitMaintaining pneumatic system integrity requires high efficiency filtration, and the Johnson Controls A 4000 632 is the industry standard for removing oil vapors and aerosols. As a direct replacement for the A 4000 147, this charcoal filter element is engineered for A 4000 series oil removal stations, providing a consistent 10 SCFM airflow capacity. The unit features a specialized epoxy coating to resist corrosion in demanding mechanical rooms,