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Vl,v'V v■ v <br />Mechanical and <br />Electrical Engneer5 <br />April 12, 1988 <br />Short Elliott Hendrickson, Inc. <br />222 E. Little Canada Road <br />St. Paul, MN 55117 <br />Attention: Dan Boxrud <br />Re: Mounds View City Hall <br />Gentlemen: <br />203 East Little Canada Road <br />St. Paul, Minnesota 55117 <br />(612) 482.9606 <br />.RECEIVED <br />SPORr ELLIOTT NENDRUSON, INC. <br />APR 13 1988 <br />S% PAUL' <br />We make the following recommendations for the mechanical and <br />electrical system for the Mounds View City Hall. <br />Rebalance Air Quantities <br />Some wall areas have been insulated which changes the <br />proportion of the air quantities required to heat and cool <br />those rooms, and through normal vibzation some air control <br />dampers have no doubt shifted position. <br />To rebalance the air quantities to the new ratings indicated <br />on the attached part plan, the estimated probable cost is <br />between $1,800.00 to $2,200.00 to have the balancing work <br />done by an independent air balancing firm such as Mechanical <br />Data of Minneapolis. <br />Calibrate and Service Temperature Co^trol Sensors and Operations <br />2. Normally the temperature control system should be checked and <br />serviced at least every other year. We expect many of the <br />sensors and thermostats have drifted out of calibrations, <br />and expect some valve and damper motors are not functioning <br />properly. <br />One of the problems noted was that automatic boiler water <br />temperature reset control for the boilers is not <br />functioning, so the boilers are being 'turned on and off <br />manually. This is a control function needing work. <br />The estimated probable cost for Johnson Control Co. to adjust <br />the control system is $1,300.00. Costs to replace controls <br />which have failed, if any, would be additional for parts and <br />labor. <br />