A 350,000 sq. ft. R & D laboratory reported unstable operation of a heat recovery unit equipped with a vortex inlet (VI) damper as the method of volume control. Further, the building management system (BMS) was unable to provide a stable negative static pressure condition in the exhaust duct upstream of the HEPA filter bank. Over the course of a week of diagnostic testing and analysis, during which the issue was discovered in multiple HRUs, MSC provided extensive documentation identifying fan selection as the issues' root cause.
View the full Diagnostic Report for MSC's step-by-step diagnostic process, conclusions reached, remedies applied, and recommended path forward.
A newly-constructed Hudson County, New Jersey school was granted a Temporary Certificate of Occupancy at substantial completion, allowing it to open at the beginning of a new school year. Staff and students immediately complained of comfort issues throughout the 100,000 sq.-ft. school, and local officials signaled that a final CO would not be granted until the problems were resolved. When project subcontractors denied responsibility and began pointing fingers at one another, MSC was called in to perform an extensive evaluation of the school's HVAC systems and report their findings in a presentation to all involved parties.
View MSC's objective, in-depth slide presentation identifying numerous issues, their root causes, and the actions necessary to rectify them and allow on-time issuance of the final CO.
MSC was retained at a four-story Northern New Jersey hospital that had been renovated in three phases over the course of several years. Upon completion of the final phase, an air volume shortage was detected when system balance reports indicated the system was providing just 60% of the 50,000 CFM specified in the design. MSC's assignment was to confirm or disprove the low volume condition, determine the cause, and provide recommendations for corrective measures.
View our comprehensive Diagnostic Report showing conclusive evidence that parallel supply fans and the return fan were not capable of delivering the required design flow against actual system resistance.
A hospital reported slow temperature pull-down between surgeries involving surgical teams with different space requirements as well as poor temperature control. MSC was called in to determine the cause of these issues and provide recommendations for improving performance. While the equipment proved to be of adequate size and configuration, a number of system deficiencies were identified, the main problem being excessive air volume that did not allow proper heat exchange to occur.
View our detailed Diagnostic Report describing our testing procedures, the problems uncovered, and nine recommendations for effectively correcting these issues.
MSC was called in to examine and diagnose an issue with a steam heating coil located in a lower level mechanical room in a large NJ hospital. The coil was logging condensate and not draining properly under normal operating conditions, causing nearly half of the coil surface area to remain unheated. Utilizing a thermal imaging camera and various testing procedures, we determined that space and elevation issues rendered the existing coil and trap unable to overcome external pressure drops required to effectively remove the steam condensate.
View MSC's comprehensive Diagnostic Report detailing system specs, testing performed, observations and technical notes, and recommended solutions.
The piping configuration of a 100-ton rooftop-mounted condensing unit and an air handler located six floors below came into question when both scroll compressors failed due to high head pressure and high FLA readings, causing the unit to trip on the overloads. MSC was tasked with inspecting the piping in the new 7-story corporate headquarters, comparing it with the design, and determining the appropriate steps to correct existing problems.
View MSC's full Diagnostic Report detailing our observations, the multi-layered combination of piping issues that led to equipment failure, and ten recommended corrective actions.