this 01-0843 part number is the correct factory specified component for those models requiring a 1-110 second timing profile

the 3821-00 is a "Less Coil" model

The Veris Industries PX3UXX05 differential pressure transducer is a field-selectable solution engineered for precise monitoring of air and non-aggressive gases

The pressure regulator is typically located under the cap screw on the valve body

30-second timing

Heil Quaker ICP 1175424 Bearing 320788-704 this 01-0843 part number isAs a specialized replacement bearing for Heil Quaker and International Comfort Products (ICP) equipment, the 1175424 is a critical component for maintaining the rotational integrity of heat pump and packaged unit blower assemblies. This OEM spec bearing is designed to withstand the high radial loads and thermal cycles common in heavy duty HVACR applications. For technicians troubleshooting noisy operation or seized blower wheels, replacing worn