Yet another HVAC question...

It's down to 53% now and it's 85% outside according to weather.com so it does look like they fixed something. And the AC has no problem staying at 68 all day long. Hopefully whatever they did is a permanent fix. One thing I remembered tonight is there was a notice a few months ago that an additional "chiller pod" (their term) was installed, making a total of 5, and ready for the upcoming (at the time) summer. I have no idea what that means technically but it sounds like it adds additional cooling capacity.

Now I just need to get that Ecobee installed...
 
Far West said:
The stupid engineer would claim everything was fine... it never failed that evening as the hotel checked in full and none of the guests could get the rooms comfortably cool due to the high humidity and staleness of the room. 79 degrees with 75% humidity is miserable. I was so happy when they found a new engineer. Guest scores drop when guests can't make the room the temp they want it!
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When I was in south Georgia last month for a few days, I stayed at a Best Western that had individual room AC units. It would let me set it as low as 60 and it would actually reach it and keep it there. I have no idea what the humidity in there was but it was pretty darn cool which I loved.
 
cptlo306 said:
It's down to 53% now and it's 85% outside according to weather.com so it does look like they fixed something. And the AC has no problem staying at 68 all day long. Hopefully whatever they did is a permanent fix. One thing I remembered tonight is there was a notice a few months ago that an additional "chiller pod" (their term) was installed, making a total of 5, and ready for the upcoming (at the time) summer. I have no idea what that means technically but it sounds like it adds additional cooling capacity.

Now I just need to get that Ecobee installed...
Click to expand...

I wonder if they just turned on the chiller all the time. When I worked in a building with a cold water chiller with evap tower, the maintenance people and I got into a discussion about how the system worked because sometimes our lab would reach 90-95 degrees if we turned on all our gear, yet other times be 10-15 degrees cooler. ( We knew the in-room unit was undersized, but wondered why the difference in temp when the heat load was the same) From what the maintenance guy said, there were two stages to cooling, the first was just running the water through the outside evaporator and getting it as cool as it would go, then sending it through the building. Only if the evaporator didn't cool enough did they turn on the "chillers" (that sucked much extra power) that really brought the water temp down to where our undersized unit could pull more heat from the room.

Of course, I may have mis-understood him, commercial A/C not being my thing. :) But it sounds like they may have been turning the chillers off at night or running them at minimum levels to save $$$$.
 
I'll bet the management was able to lower the chilled water temperature 5 degrees or better to pull more moisture out of the return air passing through the coils. That would surly help and I suspect that is what happened because they had to do something before there was a lawsuit over this and the possibility of mold. Not having any OA make up would be in violation of the present GA code and may cause other issues also. Yeah. Thank you very much
 
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