or the control board flashing a code indicating the pressure switch did not close

Precision Thermal Response: High-sensitivity NTC thermistor technology provides rapid feedback for tighter temperature regulation and improved modulation

utilizing the conductivity of the fluid to complete the secondary circuit without mechanical floats

Common Questions & Technical Considerations: What is the maximum inlet pressure for this 3/8" orifice model

The VT7355C5531E is designed for multi-speed fan control (up to 3 speeds) and provides two digital outputs that can be configured for either On/Off or floating control of heating and cooling valves

Resideo VCZBB3600 Valve 318423-701 or the control board flashingThe Resideo VCZBB3600 is a high performance 1 2" NPT two way cartridge cage valve engineered for precision control in hydronic systems. Featuring a 1. 3 Cv flow coefficient and a modified equal percentage flow characteristic, this valve ensures stable temperature regulation for both chilled and hot water applications. Built with a rugged bronze body and a stainless steel stem, it is designed to withstand demanding environments, including systems