York S1-2702-316P/A Limit Switch 321894-706 the D-3153 series is UL

the D-3153 series is UL component recognized for use on classified smoke and combination fire/smoke dampers tested up to 250°F

Does this unit support room override

The ZoneFirst AOBD-18X10 is a heavy-duty 18x10 rectangular damper engineered for precise airflow management in residential and light commercial zoning systems

Technicians should look for signs of water leaking from the collector box housing

With a timing specification of 1 to 20 seconds on and 40 to 110 seconds off

York S1-2702-316P/A Limit Switch 321894-706 the D-3153 series is ULThe York S1 2702 316P A Limit Switch is a critical safety component engineered for precise thermal regulation within York and Johnson Controls HVAC systems. This HVAC high limit switch functions as a primary safety cut out, monitoring heat exchanger temperatures to prevent overheating conditions that can lead to equipment failure or hazardous operation. As a direct replacement for S1 2702 3161 A, as well as the S1 2702 316P and S1 2702 316PA models,