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The article offers an overview of the procedures that may apply when retro-commissioning a building system. Topics discussed include few remote test procedures that may apply to the building systems being retro commissioned such as an over-pressurized or under-pressurized building is a red ag for HVAC system problems, opening the access door to view each outside air damper and send a photo of their "found" positions.

The article offers information on the Owner's Project Requirements document (OPR). Topics include granting approval for Leadership in Energy and Environmental Design (LEED) projects; closing the communication loop between owner and designer before construction; and providing target cooling and heating space temperatures and ventilation for various space types.

The article discusses considerations for commissioning mini-split systems as a supplemental to cooling provided by central air handling system, focusing on the risks presented by bells and whistles in spot cooling systems. Topics include considerations for supplemental cooling and standalone cooling, highlighting the complexities that could affect the projected performance of mini-split systems.

The article discusses the early turnover of systems to owners by commissioning professionals, particularly in cases wherein the construction manager is in charge, directs the mechanical and controls contractors in changing heating, ventilation and air conditioning (HVAC) systems. Topics discussed include recommendation that official turnover to building operators be done prior to completion of commissioning, in cases where the construction manager undermines the commissioning process.

The article offers the author's insights on how she deals with the engineering of energy recovery ventilator (ERV) and exhaust system in an apartment building considering the Owner's Project Requirements (OPR). Topics include considering the energy conservation as the top priority of the owners, the challenges of balancing the system and the leakage of the closed dampers which resulted to client's opposition and complain, and the establishment of the idea of incorporating the OPR.

Provides tips on building automation interface. Need to close the outdoor damper and chilled water cooling valve; Maintenance of setpoint ventilation rate; Modulation of cooling and heating temperature.

Presents instructions for designing and commissioning heating-cooling unit ventilator systems building automation. Sequence to follow; Helpful tips.

The article reports on the use of complex HVAC (heating, ventilation, and air conditioning) systems. It discusses the potential risks and costs inherent to complex systems including higher first cost and unqualified contractors to implement the design. It is stated that failure to operate the systems properly, could result in more energy use than a simpler system operated well.

The article discusses the two main causes of control challenges of heating, ventilation and air-conditioning (HVAC) system including the integration, coordination and cooperation needed for members of HVAC and the modern energy designs and control systems. It notes the level of review and coordination which to be focused on HVAC controls during construction phase. It also outlines some control concerns of HVAC including device coordination, controller and control programmer integration.

The article focuses on determining substantial completion of a project. Arlen Solochek, District Director of Facilities Planning and Development for the Maricopa (Arizona) County Community College, says that conditions precedent for Substantial Completion include inspection, approval, occupancy and other permits issued by regulatory agencies, and installation of building systems. It is said that testing of heating, ventilation and air condition system is also included in substantial completion.

The article discusses the significance of functional performance testing in substantial completion of sustainable buildings. It also cites the importance of air-handling system testing to a project's heating, ventilation and air conditioning (HVAC) system functional performance testing. Moreover, it notes the potential of deferred testing to address issues that are beyond the control of the project team such as weather and phased construction schedule.

The author describes an air handling unit (AHU) operational issue in a large museum which was reportedly revealed through analysis of the trend graph in her January 2012 column. The author states that the trend graph showed an out-of-tune control loop, a problem easy to spot on a graph but difficult to observe in the field. She also offers information on the February 2012 trend graph of a chilled water cooling coil.

The article presents the author's insights on the use of data trend logs in in-field functional performance testing (FPT) in direct digital control (DDC) heating, ventilation, and air conditioning (HVAC) systems commissioning process. It says that some do not use pre trending programs due to additional time on the commissioning schedule and field time requirements. However, trend logs are important for a smoother field FPT and HVAC system problem troubleshooting.

The article discusses some of the unique aspects of commissioning existing systems that are affected by partial building renovations. It cites the need to determine the scope of the heating, ventilation, and air conditioning commissioning when defining a commissioning program for the partial renovation of an existing building. The issue should be discussed with the building owners, designers and contractors during the commissioning planning process.

The article focuses on the concept of building pre-commissioning. This involves the collection of pre-design data collected for existing air-handling equipment. Under the pre-commissioning phase, engineers must identify operational issues that should be corrected prior to the renovation. They should also be able to define performance criteria for existing spaces. Finally they should determine whether or not the existing systems have sufficient capacity to serve the renovated spaces.

The article presents the author's opinions regarding the importance of building commissioning. The design and construction industry is facing problems in delivering standard, uncomplicated buildings that function properly. The industry does not have a good record in delivering facilities with complex systems, such as an integrated heating, ventilation and air conditioning system; life safety controls; etc. Building systems commissioning has an important role to play in the construction of new buildings. Contractors should implement the building commissioning process as they are responsible for delivering a building that meets the contract document requirements.

Focuses on the testing of heating, ventilation and air conditioning systems for buildings. Scope of commissioning procurement; Testing preparation, execution and documentation.

Discusses the relationship between quality control and commissioning, which is about confirming dynamic system performance and preparing operations and maintenance staff to operate heating, ventilation and airconditioning systems. Quality control as the process of confirming static equipment and component installation; Functional testing process; Random checks.

Focuses on the commissioning process in the installation of heating, ventilation, and air conditioning (hvac) systems in buildings. Elements of the commissioning process in building environmental engineering; Details regarding the continuous commissioning process; primary difference between recommissioning and continuous commissioning in building environmental engineering.

Discusses the value of the design intent document (DID) as an operations and maintenance reference throughout the life of a building's heating, ventilation, air-conditioning, and refrigeration systems. DID overview; Interpretation of the DID; Use of the DID in future renovation design; Maintenance and updating of the DID.

Discusses the importance of starting the commissioning during a heating, ventilation, and air conditioning project's design phase. Effect of not starting commissioning in the design phase; Benefits of early start of commissioning.