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  1. Replies
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    dehumidification of OA

    How many lbs/hr of dehumidification (latent heat) is required to condition 2000 cfm of 93Fdb/75wb air down to 75db/61wb


    does 51 lbs/hr sound right?
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    [QUOTE=genesis;7919871]http://www.leed.us/DisplayP...

    [QUOTE=genesis;7919871]http://www.leed.us/DisplayPage.aspx?CMSPageID=145[/QUOTe


    I have searched that site and page and cannot find that spreadsheet.

    Do you have an actual link to that sheet...
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    LEED Spreadsheet

    Does anyone have the 62MZCALC.xls spreadsheet they can e-mail me?

    I need to use that spreadsheet to fill out some requirements on a project.


    Thanks
  4. Thread: Gibson RTU's

    by riverman
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    Gibson RTU's

    working on a very low budget project using 7.5ton and 12.5ton packaged RTU units (gas heat). Competition is quoting Gibson :eek2: .... what is scoop on these? good bad?. I see Nordyne is...
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    Venting small room question

    Wondering what the formula/calculation is for determining this.

    Small interior room = 10' x 10' x 8' high.

    Owner has small server, phone data and a few other items within room. Total BTUH is...
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    Air Changes AIA table 7.2

    Working on a small remodel job that involves a small procedure room. I need to ventilate the room per AIA Table 7.2 which indicates 12 ACH (air changes per hour).

    Wondering if this ACH means the...
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    as always, Thanks BL!!

    as always, Thanks BL!!
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    418

    American Standard

    Is American Standard still a part of Trane?

    Is the product identical to Trane except for the name?

    Does American Standard build larger gas/electrics up to 25 ton with some of the same features...
  9. According to that Energy Star link, it indicates...

    According to that Energy Star link, it indicates this footnote 2 "Subject to a $1,500 maximum per homeowner for all improvements combined"

    With that known, homeowner can only get a maximum 1500...
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    that was an old 8ton condensing unit. Built 11th...

    that was an old 8ton condensing unit. Built 11th week of 1981.

    some of us have been around the industry long enough and kept some of the old books ;). Without the internet, none of this would get...
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    try your local MODINE rep. Industrial Air was a...

    try your local MODINE rep. Industrial Air was a part of Modine for awhile.
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    Problem solved. Trane switched from Metal idler...

    Problem solved. Trane switched from Metal idler wheel to composite material type. We eliminated the idler and problem solved. Trane sent us metal ones to replace the composite and now all fine.
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    Trane YCD 25T & 20T noisey

    New installs YSD 25T and YCD 20T gas packs witrh hjgh heat, econo. Install has open return air through duct drop, exposed spiral supply ducting (minimal). Both units have a loud noise coming from...
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    actually it was a SINGER furnace made by...

    actually it was a SINGER furnace made by Singer>sold to Snyder General in 1980>sold to Inter-City in 1991>name changed to ICP>sold to United Technologies. :D
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    your furnace was built the 30th week of 1981 and...

    your furnace was built the 30th week of 1981 and was the 39th unit off of the assembly line. :D
  16. talked to the sparky on the job who is the one...

    talked to the sparky on the job who is the one demanding this...all that is required is a UL label on each heater....thanks all.
  17. Medical grade electric baseboard heaters??

    Working on a small Mom and Pop dental office (built and looks like a typical ranch house). Dr is asking for us to provide some electric baseboard heaters under the glass area in each of the dental...
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    Need help sizing gas piping

    For years I have been sizing gas piping using some charts once given to me from the gas company. Charts were for 7"wc, 1lb, 2lb, 5lb and 10lb inlet pressure. All charts were based on 10% pressure...
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    In need of an older Carrier RTU spec

    sorry, no model number but this is a typical 10-15 year old Carrier RTU. Gas heat, electric cooling 15 ton unit. I think the 20 ton unit is identical just different fan and burner configurations.
    ...
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    apples to apples....go with the Tempstar ;)

    apples to apples....go with the Tempstar ;)
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    vari trac question

    Have an existing suite that has its own RTU system with a vari-trac change-over bypass system (5 zones). Tenant wants to expand into a small area (RTU is large enough to do so) and add another zone...
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    I would love one of those. . . e-mail me @...

    I would love one of those. . .

    e-mail me @ crtracingguys@yahoo.com
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    Clocking a gas meter

    Have a project with a 12.5ton heat/cool RTU (natural gas 2psig inlet pressure). Unit is running fine, 4900 cfm air delivery. Having an issue with not heating the space fast enough so we verified the...
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    Warm up time in buildings

    WOW, with the cold weather here in the Midwest can you believe the people out there that have no common sense.

    We are dealing with owners/tenants/users wondering why it takes so long to bring the...
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    Carrier 7.5ton packaged G/E

    anyone else finding some of the new Carrier packaged G/E RTU's popping the blower limit (set at 135 degrees) on the 7.5 ton unit only?

    They use the same limit on the 7.5/10 and 12.5 ton unit and...
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