ASHRAE Publishes Guideline on Specifying Building Automation Systems
The American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) has published new guidance on performance monitoring. ASHRAE Guideline 13-2014, Specifying Building Automation Systems, provides designers of building automation systems (BAS) with background information, recommendations for good practice, project considerations and detailed discussion of options with respect to the design of a BAS system.
The guideline includes online access to an example specification that illustrates the concepts described in the document. The Annex D Performance Monitoring was included to assist in the specification of performance monitoring systems.
The guideline allows monitoring and reporting of HVAC equipment function and operating efficiency, energy consumption and environmental conditions, the Guideline 13 committee said. Careful grouping of X-Y type plots can provide information required to monitor and, if necessary, troubleshoot each different part of the HVAC system. A Level 3 automated fault diagnosis can be used to predict faults.
Performance monitoring can direct a building owner to additional energy savings potential at the plant or equipment level, the committee added.
ASHRAE is already looking ahead to changes to the 2017 version of the guideline. It is being rewritten to update the use of the Internet as the primary method for networking BAS devices. Specifically, addendum a includes the following proposed changes:
- Discussion of BAS design options using IP and non-IP devices.
- Use of new software tools, such as energy dashboards.
- Strategies that BAS designers can use when working with the Enterprise IT department to deal with securing BAS devices on the enterprise intranet.
- A new Clause 12, BAS Device Network Design, written as a standalone section so readers who are responsible for this work can refer to one section for all information on this topic.
- A new Clause 13 addressing options for migrating legacy control systems to the enterprise intranet.
Addendum a to the standard is open for an advisory public review until July 21, 2014. For more information or to make a comment, visit the ASHRAE website.
Dave Kahn, chair of the Guideline 13 committee, is scheduled to give a presentation on specifying performance monitoring, with the guideline as part of the session, at ASHRAE’s 2014 Annual Conference, June 28–July 2 in Seattle, Wash.
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