I had a service call regarding "high" humidity in a server room. I was sent to check out the RTU which is a brand new York 410A. Now the T-stat was set for 20*c and room temp was 20*c. I had a 15*f TD across my coil and there was a ton of condensate coming from my trap (which leads me to believe that not only is it cooling, but dehumidifying aswell.)
All in all, the RTU is working great. But apparently their instrumentation tech complained of high humidity. For all I know he could be overweight and ran to work. But I've suggested the use of a hydrometer to read the actual RH in the space. I'm not familiar with hydrometers, as I've never used one before..could some1 please explain the use of one? how long do I have to take a reading for etc etc.
Also, if the RH is too high and the T-stat is satisfied, then could I add a duct-heater into the system that could activate when the stat satisfies on temp, but not RH?
Thanks!! - SlicK