• Simply change between heating and cooling

    Optimum comfort for all means precisely meeting the varying needs for cooling or heating in different parts of a building at the same time. This is achieved by a 4 pipe system, where each space switches between a separate supply and return for heating and cooling water. The ChangeOver6 simplifies the switch without the risk of cross-flow. Flow rate is precisely controlled by pressure independent balancing and control valve AB-QM making installation easier and faster and operation more efficient.

  • Save time, remove risks & cut costs

    Achieving optimum comfort relies on precisely meeting the varying needs for cooling or heating in different parts of a building at the same time. To achieve this, a 4 pipe system is used for the separate supply and return of both heating and cooling water. The ChangeOver6 is used to select between these two separate circuits and eliminate the possibility of cross-flow, removing risk and saving time for installation. To precisely meet each temperature demand and avoid wasteful overflow due to the varying system pressure, flow rate is controlled by a pressure independent balancing and control valve, the AB-QM. This cuts cost by increasing pump, boiler and chiller efficiency.

    Typical applications

    • Office blocks, large retail stores, hospitals, schools, etc.
    • Radiant ceiling panels supplied by 4 pipes
    • Fan coil units with single coil supplied by 4 pipe

    Combining efficiency, precise control and communication

    A no compromise solution: ChangeOver6 for perfect flow changeover and AB-QM for perfect flow control.

    Choose the flow control actuator to suit your needs: Danfoss offers the The AME110NL geared actuator, modulated by 0-10V signal, ensures stable flow and temperature with reduced pump speeds and helps maintain delta T. The NovoCon® digital geared actuator adds communication and automation, offering optimum time savings from remote installation onwards.

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