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  1. Replies
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    Just this week we suggested de-commissioning a...

    Just this week we suggested de-commissioning a 1958 vintage Carrier 5H60 R-12 belt drive. The building has been vacant for several years and quite naturally anything copper has been re-purposed.

    J
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    Most of the correspondence (email etc) I am...

    Most of the correspondence (email etc) I am seeing is now Daikin branded....


    J
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    Mikey, take a peek at this. ...

    Mikey, take a peek at this.

    http://shop.panopticslighting.com/refrigeration-lighting.aspx

    and if strings is what you want:

    http://www.solidapollo.com/
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    deleted

    deleted
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    That is what I am thinking. The solutions while a...

    That is what I am thinking. The solutions while a pain in the a$$ may get you a usable space. Lift the unit off the curb and put 2 layers of 5/8" gypsum board wall to wall in the curb with a coating...
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    This is not an equipment issue as much as it is a...

    This is not an equipment issue as much as it is a building design issue. Architects are using lighter and lighter construction and HVAC designers, in many cases are, not able to place units away from...
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    It is already Daikin-McQuay. From what I am...

    It is already Daikin-McQuay. From what I am hearing the McQuay brand is being dropped entirely.
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    McQuay to be no more

    Hearing rumors from some pretty good sources that the McQuay brand will no longer exist in the US come the end of August. It will now be Daikin across the board, and I am assuming that with the...
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    Yes, but most all would be custom manufactured...

    Yes, but most all would be custom manufactured units. What CFM range are you looking for?


    J
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    I believe the ASHRAE guidelines are 50 CFM/person...

    I believe the ASHRAE guidelines are 50 CFM/person for a smoking environment. As Motoguy mentions a central exhaust fan that ramps up in relation to an economizer damper position would be the way I...
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    You need to verify what the manufacturers MIN RPM...

    You need to verify what the manufacturers MIN RPM is for lubrication. If I remember correctly on a hermetic it will be about 1100 RPM. I know for a fact the old Carrier 5 Line open compressors had...
  12. Thread: Hospital IAQ

    by Jarreau
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    710

    The independent studies I have seen, especially...

    The independent studies I have seen, especially from the guys at St. Jude, focus more on filtration and dilution. They do however recommend uVc for cooling coils, drain pans and for inlet side of...
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    Try Miren Browser (in the app store free) J

    Try Miren Browser (in the app store free)

    J
  14. Poll: Interesting concept. There is already an Office...

    Interesting concept. There is already an Office Suite available ( http://www.libreoffice.org ) which includes a very nice database program.

    J
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    The comfort level and evenness of the temperature...

    The comfort level and evenness of the temperature is the same. My filters have been loading more quickly which makes me wonder how much crap was getting stuck in stud space return.

    J
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    In my area, one word, leakage. Too many joints...

    In my area, one word, leakage. Too many joints for the puzzle fitters to properly install. If properly thought out a central return on a single story home is just as effective as a return in every...
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    Their website has been weird all day, growing...

    Their website has been weird all day, growing pains,

    http:www.nest.com

    I found the connections at one point, now can't seem to locate.
  18. Thread: Google

    by Jarreau
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    I've had no problem with ANY of my Google...

    I've had no problem with ANY of my Google services....

    J
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    Nest Thermostat - from the iPod designers

    I'll give it a 10 on the coolness factor scale

    http://www.engadget.com/2011/10/25/ipod-fathers-unveil-their-next-project-the-nest-learning-thermo/
    ...
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    sorry JP, I am trying to watch that. J

    sorry JP, I am trying to watch that.

    J
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    100 gallons in what time period? If that is flow...

    100 gallons in what time period? If that is flow in gallons per minute, then use this formula:

    Total Heat (BTU/hr) = 500 x GPM x ∆t (water)

    J
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    There is no difference in the compressors between...

    There is no difference in the compressors between the DD and BD models, just the drive system. There is/was a different oil sump for the Transicold refrigeration compressors used in buses, ships etc....
  23. Thread: makeup air

    by Jarreau
    Replies
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    3,076

    You could do the duty with an Aaon 100% MUA,...

    You could do the duty with an Aaon 100% MUA, takes more than 12˝ Tons, this is an 18 ton unit

    RN-018-3-0-EB09-000 Cooling Section
    Total Capacity: 210.39 MBH
    Sensible Capacity: 110.55 MBH
    ...
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    If you can see the bulb, any part of the bulb,...

    If you can see the bulb, any part of the bulb, from any angle then I would say you have a problem. If it is reflected tracer light (uVc is not visible) then maybe you're OK.

    J
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    300', WOW !! One of the problems here is...

    300', WOW !!

    One of the problems here is exactly how much extra charge is going to be required and what that is going to do to the compressor. In line lengths such as this the size of the liquid...
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