scope:

This UFC describes the design of HVAC control systems and the associated building control network that can interface to a UMCS in an Open and non-proprietary manner.

HVAC control sequences and instrumentation.

These topics are covered in UFGS 23 09 13, UFGS 23 09 93.

Building controllers and control network.

This UFC describes designer selections for DDC hardware and software as well as the Building Control Network (BCN) communications including data exchange, architecture, and cabling.

UMCS interface.

The DDC system can function as a stand-alone system with reduced functionality (limited user interface, no trending etc.) but is intended to be integrated into a UMCS in accordance with the UMCS guidance (UFC 3-401-01 and UFGS 25 10 10) to provide for remote supervisory monitoring and control of the DDC system. This UFC (3-410-02) and UFGS 23 09 23.XX helps to ensure that the building-level control system is capable of being interconnected with a UMCS installed in accordance with UFGS 25 10 10 and/or \2\ UFC 3-470-01, Utility Monitoring And Control System (UMCS) Front End and Integration /2/. Even in the absence of a UMCS, this UFC describes the methodology for designer selection and specification of data exchange parameters including requirements that will facilitate subsequent non-proprietary UMCS interface.

Other systems.

Although not directly addressed or specified in the UFC or UFGS the methodology, approach, and many of the requirements defined in this UFC and UFGS 23 09 23.XX can be used in the design of other (non-HVAC) Open DDC systems such as water and sanitary sewer systems, electrical systems, lighting, and other utility systems and equipment.