# System No. 5 Two-pipe Fan Coil (N/A) A Two-Pipe Fan Coil system, as defined in EnergyPlus HVACTemplate, is a climate control system commonly used in hotels, apartments, office buildings, and other multi-zone applications. It consists of individual fan coil units installed in each zone, connected to a central two-pipe hydronic loop that circulates either chilled water for cooling or hot water for heating, depending on the season. Each fan coil unit contains a coil through which the water circulates, transferring heat to or from the air, and a fan that distributes the conditioned air throughout the space. The two-pipe configuration requires seasonal changeover between cooling and heating modes, as the system can only provide one function at a time. The system ensures individual zone temperature control and relatively quiet operation. This configuration is particularly suitable for applications where decentralized zone control with a simple, cost-effective hydronic distribution system is preferred. A Two-Pipe Fan Coil system comprises: * Plant HVAC component - Two-Pipe Hydronic System (Heating/Cooling Changeover) * Space HVAC component - Two-Pipe Fan Coil Unit The 'Select HVAC Template' form allows for multiple Spaces to be served. Clicking into the 'Spaces' field shows a list of available Spaces. Each selected Space will have one Two-Pipe Fan Coil Unit Space HVAC component, providing individual zone climate control. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.betterbuilding.io/user-guide/2d-building/building/hvac/hvac-templates/system-no.-5-two-pipe-fan-coil-n-a.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.