Consulting-Specifying Engineer - October 2007 - (Page 20)

M/E Roundtable complete. Focus on developing more effective training and documentation for installers and users. If you focus on system openness, develop and install truly open systems. Open protocol is a necessary precursor to open systems, but far too often, promises are made for open systems while only delivering a limited open system uses an open protocol. One needs to compare the functionality of a single manufacturer solution to a truly open system. A system is not open where functionality is limited across platforms and proprietary software or hardware keys are required to operate and configure these systems. WICHENKO: I believe that BACnet is the protocol of choice for controls equipment. USGBC LEED Silver certification is now the de-facto standard for new construction. Owners will want integrated, interoperable systems to do part-load occupancy control, demand-response strategies, measurement and verification and continuous commissioning to get LEED credits. BACnet is a continuously evolving standard and manufacturers must keep up with these protocol changes to meet changing owner requirements. Some vendors have taken the approach that control devices can be relatively simple with the integration being done at the server level. It is my view that owners want Web-enabled, networkable equipment that will run for 15 to 20 years in a standalone mode when there are network communications faults and server crashes. I believe that distributed control is the better model for our industry and is more consistent with the need to have secure, fault-tolerant systems in this post-9/11 environment. C S E : What do you deem as low- hanging fruit for most energy-efficiency retrofits that involve BAS? HYDEMAN: Zone-based reset for temperature and pressure. WICHENKO: Re-commissioning DDC systems is a cost-effective way to gain savings. Many utilities offer grant programs for this work. The other important item is utility meter reading through the DDC system. Converting gas, water, electric meters to DDC is a relatively simple job now. Even early legacy systems can accept a pulsed input from a meter that can be accumulated in a panel. This information gives valuable information to maintenance on utility consumption on a daily basis. If there are changes from day to day, this will alert maintenance to go check for leaks, faulty equipment etc. This data can be passed up to the enterprise level using Web services for further analysis or for making real time pricing buys. Input #213 at csemag.com/quickResponse http://www.yaskawa.com/E7 http://www.yaskawa.com http://www.yaskawa.com http://csemag.com/quickResponse

Table of Contents Feed for the Digital Edition of Consulting-Specifying Engineer - October 2007

Consulting-Specifying Engineer - October 2007 Contents On the Web In the News M/E Roundtable How To Beat the Energy Codes Professional Practices Codes & Standards A Capital Job on Engineered Buiding Systems Going Green in Data Centers Overcurrent Protection: Fuses or Breakers? Third-Party Liability Management Report New Products Product Spotlight Jobs/Classifieds Specifier's Notebook

Consulting-Specifying Engineer - October 2007

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