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Type: Posts; User: riverman

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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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    1,870

    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!!
  8. Replies
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    440

    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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    766

    try your local MODINE rep. Industrial Air was a...

    try your local MODINE rep. Industrial Air was a part of Modine for awhile.
  12. Replies
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    928

    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.
  13. Replies
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    928

    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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    4,758

    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
  15. Replies
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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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    894

    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 ;)
  21. Replies
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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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    1,956

    I would love one of those. . . e-mail me @...

    I would love one of those. . .

    e-mail me @ crtracingguys@yahoo.com
  23. Replies
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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...
  24. Replies
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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...
  25. Replies
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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...
  26. Exactly, if the windows are poor grade windows,...

    Exactly, if the windows are poor grade windows, they will sweat regardless if below the dewpoint in the space. Take a few humidity readings...then get back to us.
  27. Methane gas experts/consultants/contractors

    Looking for anyone that is an expert/consultant/contractor in dealing with Methane gas ventilation under a building.

    I have a builder (Midwest) that is in need of dealing with someone in the field...
  28. your dealer is correct. All parts fail that is...

    your dealer is correct. All parts fail that is why you have a warranty. The manufacture (like any) will cover the part not the labor.

    As far as the auto industry, I WISH that the auto...
  29. Replies
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    Need formula for calculating YEARLY gas

    Anyone have a formula that I can use for calculating YEARLY natural gas costs for homes and buildings that is based on DEGREE DAYS and cost of gas?

    Formula must use the degree days to be accurate...
  30. Thread: Dehumidistat

    by riverman
    Replies
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    681

    Anyone know of a nice wall mounted dehumidistat? ...

    Anyone know of a nice wall mounted dehumidistat?

    Looking for one that is preferrably a snap type control that opens and closes the Y circuit and is a non powered control. I looked at the...
  31. Replies
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    Is this unit 208/230/3/60 or 460/3/60?

    Is this unit 208/230/3/60 or 460/3/60?
  32. Replies
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    that unit is an 80,000 btuh input with a 4 ton...

    that unit is an 80,000 btuh input with a 4 ton drive. That being in a 500 sf cabin is the problem. Too much heat and blower. That furnace was a bulletproof 80% unit back in it's time.
  33. Replies
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    Rheem, RGDE10EQAGR SN#AG5D302F40916763 from...

    Rheem, RGDE10EQAGR SN#AG5D302F40916763

    from 1991, anyone know if the heat exchanger is still under warranty? No Rheem suppliers exactly near me so figured I would start here.
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    I think those are single phase units .. not three...

    I think those are single phase units .. not three phase.
  35. Replies
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    Model numbers? must be EER not SEER ..

    Model numbers? must be EER not SEER ..
  36. Replies
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    Have a customer who is looking for all packaged...

    Have a customer who is looking for all packaged rooftop equipment (gas/electric) on a job to be a minimum 12 EER on all three phase equipment.

    There are a few units (3, 4 & 5 ton) and some that...
  37. Replies
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    663

    Have a customer who bought a large facility and...

    Have a customer who bought a large facility and they do a lot of welding. Building has crane rails everywhere and is about 28' tall.

    They are looking for something that can take the welding smoke...
  38. Replies
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    RGRA-12ERAJS Is this a 4 or 5 ton drive...

    RGRA-12ERAJS

    Is this a 4 or 5 ton drive furnace?
  39. Thread: lennox RTU's

    by riverman
    Replies
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    2,011

    Older Lennox GCS16-1603-270-1Y and ...

    Older Lennox

    GCS16-1603-270-1Y

    and

    GCS9-653-150A-3Y


    is the first unit a 13 ton and 270,000 btu heating?
  40. Replies
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    662

    Bidding a job that requires (1) 60,000 cfm air...

    Bidding a job that requires (1) 60,000 cfm air rotation (air turnover) unit (indirect fired) for a warehouse.

    What manufactures are out there that make such a unit. I found a few but need to...
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    922

    With the higher than normal temps and humidity...

    With the higher than normal temps and humidity lately, people get unreasonable when it comes to indoor temps and moisture. Wondering if anyone has what is to be considered an acceptable dew point for...
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    Trying to get everyones viewpoint. We sell...

    Trying to get everyones viewpoint.

    We sell Heil and some York. Both of these manufactures mandate that all 13 SEER units be mated to a coil that has a TXV (no exceptions).

    I am seeing other...
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    818

    My buddy is wanting to get into making this as a...

    My buddy is wanting to get into making this as a business and is thinking about a 10-15,000 square foot building (new) with 100,000 gallon tanks...

    The Methenol is stored outside but is pumped...
  44. Replies
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    818

    Anyone have any experience with Biodiesel plants...

    Anyone have any experience with Biodiesel plants (HVAC wise).

    Do's
    Dont's
    etc..

    Very little known about these plants however they are becoming very popular and no one knows much about the...
  45. Replies
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    893

    I do not like the idea either, just what the...

    I do not like the idea either, just what the Architect mentioned.

    I will more than likely just propose a Vari-Trac VAV system with electric heat in exterior zones.
  46. Replies
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    893

    Need a little help. Working on a job where the...

    Need a little help.

    Working on a job where the original white box spec called for a 15 ton heating/cooling RTU for a single story office space. Unit is installed (no ducting), now a tenant is...
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    Was called in to look at an existing project that...

    Was called in to look at an existing project that is about 2 years old.

    Basically a 4-car garage around 1800 square feet fully insulated, drywalled walls and ceiling, no floor or trench drains,...
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    All I will say is that something is wrong when...

    All I will say is that something is wrong when the union boys arrive at a jobsite trying to recruit you when they are unemployed sitting on the bench. If I were sitting on a bench looking for work,...
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    Thanks

    Thanks
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    GE # CONDENSING UNIT BTD730A100A0 Looking for...

    GE # CONDENSING UNIT BTD730A100A0

    Looking for the tonnage of this unit if anyone knows.

    Thanks
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