Thank you for reviewing the draft for ASHRAE Standard 189.1 and offering suggestions relating to section 18.104.22.168 (b) of that document. In your comment you suggest the following:
"(b) Cooling towers and evaporative coolers shall be equipped with makeup and blowdown meters, conductivity controllers, 40 micron filtration equipment, and overflow alarms. Cooling towers shall be equipped with efficient drift eliminators that achieve drift reduction to 0.002 percent of the circulated water volume for counterflow towers and 0.005% for cross-flow towers."
Micro filtration is not necessarily required nor appropriate for all cooling towers. The Project Committee agrees that this type of information is appropriate for a User’s Manual and recommends that this be addressed in a that document.