Consulting-Specifying Engineer - September 2007 - (Page 64)

Professional Practices • Soon after construction contracts have been awarded, commissioning providers should meet with the construction manager or general contractor to integrate the commissioning activities into the master construction schedule. Because the commissioning agent wants to start functional performance verification testing as early as possible, they collaborate with the contractors to schedule equipment startup and completion of systems, or portions of systems, to allow testing to proceed. In some instances, this fast-tracking of functional testing will require subcontractors to revise the sequence of component and system installation. The importance of scheduling the controls subcontractor to advance work to meet this sequence is clear and must be communicated early. This approach marks a significant change from the traditional situation and has met with resistance, on occasion, from controls installers. During the submittal process, the commissioning provider determines how closely the installation satisfies the design intent; the critical issue is the capability of the system to perform. • During the submittal process, along with the design engineer, commissioning providers determine how closely the control configuration satisfies the design intent. It is not just a question of the temperature sensors and dampercontrol devices meeting the specification. The more critical issue is system capability to perform all of the designated HVAC sequences of operation and interface points with other operating elements, and integrate with other building systems without having to implement unique fixes as supplementary to the scope of submitted packages. This requires detailed and close cooperation between the design engineer and commissioning provider who are reviewing the submittals. It is critical to identify deficiencies at this stage, before installation of the control system commences. • Not more than 60 to 90 days following submittal approval, the commissioning provider requests the first draft of operating and maintenance manuals from the contractors. The timing is important, because the sequence of draft review and revisions always drags out. Commissioning providers should have the final, approved manuals available to the operating personnel a minimum 60 days before training sessions commence. Similar to all issues described in this presentation, the quality of information prevails. It is important that the operation and maintenance material submitted contain the information of the components that are currently installed and not be generic. Operating personnel will want sequence of operation details and troubleshooting explanations in the manuals. While parts lists and specification criteria for components are useful, this is not the information that will Input #236 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 - September 2007

Contents M/E Roundtable Cover Story: Airborne Superbugs Third-Party Liability Back to School Product Spotlight Codes & Standards Professional Practices How To New Products Jobs/Cliassifieds Specifier’s Notebook Pure Power Supplement New Technologies, Same Old Transmission Problems Wireless Battery Recharging Solar Concentration Renewables Tracking System A Mighty Wind The Importance of Load Bank Testing Quality Power for Security Systems

Consulting-Specifying Engineer - September 2007

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