Siemens Building Technology 331-4310 Actuator 320734-701 The entire Carrier pilot harness

The entire Carrier pilot harness must be replaced to restore the unit's safety certifications

preventing compressor overheating while improving total HVAC energy efficiency

The 41W50 is rated at 825 RPM

The York S1-024-35619-000 is an essential 24V on-break relay designed to provide reliable compressor short cycle protection

streamlining the interface between the actuator and the economizer controller

Siemens Building Technology 331-4310 Actuator 320734-701 The entire Carrier pilot harnessThe Siemens 331 4310 is a heavy duty pneumatic damper actuator engineered for precise proportional control in commercial HVAC systems. This No. 4 actuator features a 3 7 psi spring range and a 2 3 8 inch stroke, making it a critical component for modulating dampers and air valves in both legacy and modern building automation systems. Designed with a rugged metal housing, it handles the mechanical demands of air handling units where consistent torque