the AT-520-40 is designed to withstand the rigors of high-traffic commercial environments while maintaining a secure interface with the internal adjustment post

well-mounted water sensor

Setting it too close to the freezing mark (32°F) may not provide enough lead time to stop the fan before ice forms in the copper headers

Can this sensor be used for variable frequency drive (VFD) applications

The B210 valve body is rated for chilled or hot water

White-Rodgers 36C01A-405 Gas Valve Refrigerant the AT-520-40 is designed toThe White Rodgers 36C01A 405 Gas Valve is a technical grade standing pilot gas valve designed for heavy duty furnace gas valve replacement in residential and light commercial heating systems. Operating on a 120V gas valve circuit with a 0. 23 Amp draw, this 3 4" x 3 4" NPT combination control integrates a manual gas cock, pilot safety, and a fast open pressure regulator into a single, compact manifold. It provides a high flow capacity of approximately