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  1. Replies
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    Part 2!

    Continued!

    https://lh5.googleusercontent.com/-CulRllz01NE/UUs3KeF054I/AAAAAAAAMhc/JjZThr7vZOI/s1197/IMG_20130321_123337.jpg
    1 of the 3 Carrier Evergreen Chillers.

    ...
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    New VCU Medical Education Center

    Had a unique opportunity to recently tour mechanical spaces of the new McGlothlin Medical Education Center on the Virginia Commonwealth University campus, and I thought you guys might like to see...
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    [I know this is an older thread, but I just...

    [I know this is an older thread, but I just looked at it for the first time since January]

    Hey, I went to school there for 3 years! Lake Braddock was a fun place. I really got interested into HVAC...
  4. Thread: bonus room

    by york_hvac
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    We have a bonus room over our garage too. It...

    We have a bonus room over our garage too. It doesn't get too hot in the summer but in the winter it is freezing. Our main AHU won't keep this room warm in the winter, even though the room next to it,...
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    Wow, thats cool DeltaT! I remember you told me...

    Wow, thats cool DeltaT! I remember you told me you used to work in the Northern Virginia area when I posted something about Lake Braddock Secondary. Did you ever do any work for that school? Ever...
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    Sweet, I love Linux :D

    Sweet, I love Linux :D
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    I'm glad you guys like the pics :) This is the...

    I'm glad you guys like the pics :)
    This is the only building High School in Loudoun County, VA that still has working pneumatic controls. I have no idea how they interface it with the EMS system....
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    38YCC is one of Carriers older "cube" Heat Pumps....

    38YCC is one of Carriers older "cube" Heat Pumps. I have the 38EYG, which is the 13 SEER, Puron Model.
    The "banding" of frost also happens on my unit. Frost always appears at those two spots first. ...
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    Old Johnson Controls Pneumatics

    Over the summer, and friend and I were surveying a sound system, and I thought these old HVAC controls looked cool, so I took a few photos for you guys.

    Here are two of the AHU's that they...
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    So you have the Aprilaire 5000 right before your...

    So you have the Aprilaire 5000 right before your indoor unit? If this is the case, it should be the only filter. It is safe to remove the 1" filters at the return inlets. If this is new construction,...
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    I believe you can. There is an "EAC" terminal on...

    I believe you can. There is an "EAC" terminal on the Infinity Control Board that supplies 115 VAC whenever the blower is opperating. Not sure if Clean Effects needs high or low voltage to opperate.
  12. Hmmm, 3M, must be that new 99.9% efficient filter...

    Hmmm, 3M, must be that new 99.9% efficient filter I have been hearing rumors about huh?:rolleyes:
  13. Replies
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    I understand, and every area is different, but...

    I understand, and every area is different, but that is the way that my unit was sized. So I was just trying to provide a refrence point. By the way, Im in Northern Virginia.
    74 isn't cold at all,...
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    What kind of thermostat do you have? Is anybody...

    What kind of thermostat do you have? Is anybody else home during the time you were at work? Even if you set the thermostat is set for 74, the temperature is not going to magically drop from 83 to 74....
  15. I have two Carrier Infinity Systems (the same...

    I have two Carrier Infinity Systems (the same thing as Evolution), and love them. The User Interface is VERY nice.
    Proper installation is key to any HVAC system. Find a contractor who is willing to...
  16. Payson, This reminds me of the time you serviced...

    Payson,
    This reminds me of the time you serviced this Rheem condensor, remember???
    http://www.hvac-talk.com/vbb/showthread.php?t=75253&highlight=Rheem

    :D

    -york_hvac
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    Ok, so I took some photos of the space like I...

    Ok, so I took some photos of the space like I said I would



    Here, you can barley see two of the returns located high on the wall at the back of the Auditorium....
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    Ha, I WISH we had Catwalks! That would be...

    Ha, I WISH we had Catwalks! That would be AMAZING! But no, sadly we don't have any. And our spotlight opperators are at floor level

    And I agree with the CO2 ventilation control being needed. Right...
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    Thanks for all of the replies guys, I really...

    Thanks for all of the replies guys, I really appreciate it!

    I got some more info. The model number is actually 39ED2919867, can anybody descipher it?. On the unit, it says "Component Assembly...
  20. If you are looking for quiet, the scroll is the...

    If you are looking for quiet, the scroll is the way to go. The reason some people like the recip more is because it is staged at 50/100 vs 67/100 for the scroll, which allows for longer run times and...
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    For the 3 stages to work properly, you must have...

    For the 3 stages to work properly, you must have the "-B" revision of the Infinity/Evolution control.
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    Thanks for all of the suggestions guys, yes, I...

    Thanks for all of the suggestions guys, yes, I realize that an issue like this cannot be diagnosed over the internet, but thanks again for the general ideas, please keep them coming if there is...
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    Thanks for the replies guys. Yes, it is in fact...

    Thanks for the replies guys. Yes, it is in fact air noise coming from the diffusers, no mechanical noise transmission.
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    Auditoriums and HVAC Design

    Hi guys,

    I am just interested in your opinions on how an HVAC system should be designed for a theater space, and what is done to keep sound levels to a minimal. I am not in the HVAC trade, but I...
  25. Like others have said, I think your bill would be...

    Like others have said, I think your bill would be lower if you had a thermostat with a smart recovery or similar feature. With your stat now, it is probobly commanding the Aux heat strips to come on...
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