the valve modulates to allow more water flow through the condenser to increase heat rejection and bring the pressure back to the desired range

It automatically switches the thermostat's internal circuit to the correct mode (heating or cooling) based on whether the central chiller or boiler is active

ensuring the mounting bracket and pilot burner line up perfectly with existing manifold tappings for a clean install

facilitating accurate ECM motor troubleshooting and performance validation

and International Comfort Products equipment

Belimo 22DC-51 Sensor mario the valve modulates to allowThe Belimo 22DC 51 is a precision engineered duct CO2 sensor designed for demanding Demand Controlled Ventilation (DCV) applications. This 7 inch probe utilizes Non Dispersive Infrared (NDIR) technology with dual channel self calibration to ensure accurate long term monitoring of indoor air quality. Field selectable output signals of 0 5V or 0 10V provide seamless integration with standard Building Automation Systems (BAS) and controllers. Built with