If you see frost forming directly on the valve body or the inlet screen

preventing heat exchanger damage

With its 2-inch stroke length

The unit is configured for Clockwise (CW) rotation (viewed from the discharge side) and features a 1/2" bore located on the intake side for secure shaft mounting

Functional Devices PSH100AW Power Supply THPU32HP7Y If you see frost formingFor contractors requiring a reliable, "all in one" solution for building automation and control circuits, the Functional Devices PSH100AW is a professional grade 100VA power supply. This unit simplifies field installations by integrating a high efficiency split bobbin transformer within a rugged NEMA 1 metal enclosure. Designed specifically for 120 VAC to 24 VAC step down applications, the PSH100AW is UL Class 2 listed, ensuring it meets strict safety