Select and prepare an installation site4-24 DocuTech 61xx Installation Planning GuideExplore the reserved building capacityConsult the site HVAC engineer or contractor to determine if theadded heat load can be managed by means of reserved coolingcapacity available from the building source. This could be achange in the rate of incoming air or a reduction in the incomingair temperature.If this is possible, use the Heat Management Worksheets againwith the new airflow rate (step 1a) and the incoming airtemperature (step 1b) that is obtained. When recalculating thetemperature of the room under maximum heat load conditions(step 2), use the following formula to compensate for the airflownot considered before:1. Divide the change in airflow rate (CFMs) by the new totalCFMs.For example, if an additional 500 CFMs have been added tothe airflow rate, which used to be 1000 CFMs (step 1a), thenew total CFMs would be 1500. Five hundred would then bedivided by 1500. The result would be 1/3.2. Subtract the incoming air temperature (step 1b) from thepresent maximum temperature (step 2).For example, if the present maximum temperature is 75° F(24° C), and the incoming air temperature is 55° F (13° C),the result would be 20° F (11° C).3. Multiply the result from step 1 (above) by the difference intemperature from step 2 (above). The result would besubtracted from the old number in step 2 of the HeatManagement Worksheet.In using the above example, 1/3 would be multiplied by 20°F(11° C). The result of 7° F (4° C) would be subtracted fromstep 2 of the Heat Management Worksheet.If the available reserve capacity still results in anunacceptable change in room temperature, consider otheralternatives.