CCP 01-13-2003 - Laserfiche WebLink

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Memo to Aaron Parrish January 6,2003 City Hall HV AC 2 . Staff is of the opinion that the best solution is to hire an independent contractor that did not install Or design the system to come in and evaluate the design, installation and functions of the mechanical system. This process is called commissioning of the HV AC system including the BAS system (software/coIltrols). This is a detailed examination of our system. The report that is provided will review the design of the system and the installation of the system per design and per the manufacturer's specifications, then make recommendations as to how best to remedy the problems We are experiencing with the HV AC system. A copy of the Commissioning Report completed on a larger project, MVS Pinewood Elementary is enclosed for your review. This report will give you a general idea of the type of report we would be getting. Staff obtained a quote from Johnson Controls, the manufacturer supplier of most of the control equipment. Again, Johnson Controls was not involved in the design or installation of our HV AC system. Since Jollnson Controls manufactures the controls for our system (a Metasys program), staff feels they are the cOntractor most qualified to review the system. The bid staff has received is $7,468.00. Again, this is a very thorough report and staff believes this to be our best tool to examine our BVAC system and remedies for our problems. This report will also identify improper control/design or installation on the system and identify the parties responsible, if any, for repairs to the system. The bottom line is we have a system that does not function as per design, with no guaranteed solution to our problem. We could go ahead with the C02 and humidity sensors for $4,650.00 and still be experiencing problems after the installation. The City has been withholding funds (approximately $10,000) from Rochon Corporation until an acceptable solution to our HV AC problems is reached. Staff believes this commissioning report will go a long way in the right direction to solving our HV AC problems. . Recommendation Staff recommends the City have Johnson Controls as our preventative maintenance contractor for a fee of $3,364.00 annually. They will make quarterly maintenance checks and inspect our system for proper performance. Secondly, staff recommends we do the commissioning of our HV AC system. Although this report does not pay for repairs to our system, it will make appropriate recommendations to solve deficiencies (such as installing the C02 and humidity sensors). Johnson Controls will stand behind their recomrnendations and work with the City to make sure our system is running at optimum efficiency and performance. .