Barton Associates recently retro-commissioned an air handler for a hospital client. The retro-commissioning process typically starts with a review of the Building Automation System (BAS). A graphic screen shot from the subject air handler is shown above. There is a lot of information on this screen, but focus on the basic information circled in red … Read more
The Joint Commission is increasingly placing emphasis that hospital facilities meet the requirements of The Joint Commission Standard EC.02.05.01, specifically the control of airborne contaminants through proper air pressurization of critical spaces. The Joint Commission reports that 47% of all hospitals in 2013 and 53% of all hospitals in 2014 have received non-compliance scores for … Read more
More specifically is your heating, cooling, and ventilation (HVAC) system on schedule? Do your toilet room fans run at night when you are not there? Are you heating or cooling the entire building when no one is working? Changing temperature setpoints and scheduling HVAC equipment to turn off when the building is unoccupied is an easy way … Read more
The graph demonstrates the results of retro-commissioning for one rooftop unit. The retro-commissioning authority found improper damper operation in economizer mode. Instead of fully opening the outdoor air damper to provide free cooling, the actuator fully closed the outdoor air damper and provided 100% return air to the space. Mechanical cooling was required at an … Read more
