Fan coil units (FCUs) usually consist of only a fan, a heating or cooling coil and a filter, and are located within the space they are serving. This may be single office rooms, apartments or larger areas where multiple units are installed together to overcome an overall heating or cooling requirement.

FCUs can either just recirculate internal air, in which case a separate ventilation system is required, or may introduce s proportion of fresh air that is mixed with the recirculated air.

Diagram below shows the main components and features of a simple FCU.

Fan Coil Circuit Diagram

Where FCUs are supplied with chilled water and hot water from central boilers and chillers they are generally referred to as two pipe (either heating or cooling) or four pipe (both heating and cooling) units. A control valve installed on the return pipework would be controlled by a standalone thermostat or a Building Management System (BMS). FCUs can be wall-mounted, freestanding or ceiling-mounted and may be concealed in ceiling voids. 

Recommended Installations

 

Pressure Independent Control Valve (PICV)

  • PICV
    Stand Alone

    • Easy to set up
    • Straightforward commissioning
    • No need for separate Commissioning Set and 2 Port Control Valve

    View PICVs

  • Hook-Up
    w/ PICV

    • Can be remotely fitted away from the terminal
    • Reduced space constraints
    • Extended levers available for chilled systems

    View Hook-Ups

  • Hook-Up Prime
    w/ PICV

    • Direct mounting onto a terminal
    • Reduced installation time
    • No need for insulation due to mounting over drip tray

    View Hook-Up Prime

  • MultiComm
    w/ PICV

    • Multi-manifold system allowing commissioning of up to 6 FCUs from one location

    View MultiComm

OR

Differential Pressure Control Valve (DPCV)

  • DPCV
    Stand Alone

    • Range of controllable dPs available
    • Available with Companion Valve

    View DPCVs

  • Hook-Up
    w/ Comm. Set

    • Available with either static Commissioning Set or Motobalance
    • Available with Strainer
    • Extended levers available for chilled systems

    View Hook-Ups

  • Hook-Up Prime
    w/ Comm. Set

    • Direct mounting onto terminal
    • Reduced installation time
    • No need for insulation due to mounting over drip tray

    View Hook-Up Prime

  • MultiComm
    w/ DPCV

    • Multi-manifold system allowing commissioning of up to six FCUs from one location
    • Commissioning Sets on each terminal connection

    View MultiComm