Page 2 of 3 FirstFirst 123 LastLast
Results 14 to 26 of 27
  1. #14
    Join Date
    Apr 2012
    Location
    Paper Street Soap Company
    Posts
    2,304
    Hmmm..do you work for custom ?

  2. #15
    Join Date
    Apr 2012
    Location
    Paper Street Soap Company
    Posts
    2,304
    Compessor being oversized runs higher head under normal loads.

    High ambient and high load doesn't improve that. Its just a bad idea.

  3. #16
    Join Date
    Mar 2012
    Location
    My house is in Texas..
    Posts
    141
    I work for Nance.

    And I'm not sure for the reasoning behind that other then some engineer pencil whipping something.

    "Duct tape is like the force. It has a light side, a dark side, and it holds the world together."

  4. #17
    Join Date
    Apr 2012
    Location
    Paper Street Soap Company
    Posts
    2,304
    Can you do a fellow SCR AC tech a solid and ask around. Maybe you could gwt a better answer than I did.

    410A pressures were 410 discharge with 90 suction. 90. Thats well below freezing and ambient was over a 100 and return at 78.

    Crazy.

  5. #18
    Join Date
    Mar 2012
    Location
    My house is in Texas..
    Posts
    141
    Huh.... Is it a scroll? And no kind of staging or unloading junk? What drilling company?

    "Duct tape is like the force. It has a light side, a dark side, and it holds the world together."

  6. #19
    Join Date
    May 2012
    Location
    San Diego, CA
    Posts
    352
    What makes the AHU a 90K btu unit? Is the AHU a furnace or just a fan with coils? You should see what the fan CFM rating is...

    I can think of a few reasons...

    1. They need 120K of cooling but only need around 3000 CFM, possibly lowering the CFM to get more latent cooling.

    2. They have minimal duct work and thus have low static pressure loss so they can get a smaller AHU with a smaller fan but that smaller fan can still meet the 4000 CFM.

    3. They made a mistake.

  7. #20
    Join Date
    Mar 2012
    Location
    My house is in Texas..
    Posts
    141
    Fan coil.

    "Duct tape is like the force. It has a light side, a dark side, and it holds the world together."

  8. #21
    Join Date
    Mar 2012
    Location
    My house is in Texas..
    Posts
    141
    Name:  ImageUploadedByTapatalk1340796721.102089.jpg
Views: 69
Size:  15.2 KBName:  ImageUploadedByTapatalk1340796734.552437.jpg
Views: 73
Size:  15.6 KB

    SCR house ... Just so people would know what we're talking about

    "Duct tape is like the force. It has a light side, a dark side, and it holds the world together."

  9. #22
    Join Date
    Apr 2012
    Location
    Paper Street Soap Company
    Posts
    2,304
    Quote Originally Posted by AddMore22 View Post
    Huh.... Is it a scroll? And no kind of staging or unloading junk? What drilling company?
    Yes it's a scroll and no unloaders or staging. NOV.

  10. #23
    Join Date
    Mar 2012
    Location
    My house is in Texas..
    Posts
    141
    It's a nov rig? I thought they were just a service company.

    "Duct tape is like the force. It has a light side, a dark side, and it holds the world together."

  11. #24
    Join Date
    Jun 2012
    Location
    East tx
    Posts
    164
    They were set up similar to that around here. The drilling companies wore us out for a design flaw! Let me guess half the scr house is fine where the other side with the big transformers is scorching? I know the brand of the equipment i was working on. It's not the one you mentioned. Tried calling manufacturer several times and got nowhere with them. Best set up that worked well were two 10 ton splits with ductwork running the length of the building.

  12. #25
    Join Date
    Mar 2012
    Location
    My house is in Texas..
    Posts
    141
    Yeah WITH A 100% backup

    "Duct tape is like the force. It has a light side, a dark side, and it holds the world together."

  13. #26
    Join Date
    Apr 2012
    Location
    Paper Street Soap Company
    Posts
    2,304
    Quote Originally Posted by Crazecodyk View Post
    They were set up similar to that around here. The drilling companies wore us out for a design flaw! Let me guess half the scr house is fine where the other side with the big transformers is scorching? I know the brand of the equipment i was working on. It's not the one you mentioned. Tried calling manufacturer several times and got nowhere with them. Best set up that worked well were two 10 ton splits with ductwork running the length of the building.
    I was misleading in my initial post. They're Trane not Carrier.

    What they've gone too lately is even worse. 10 ton side discharge units that are built in some warehouse located somewhere around the ship channel.

    They're not UIL certified. Just a mix of parts you can buy through Johnsons supply.

    They will size a 120k btu unit for exactly a 120k btu load......*sigh*

    When I brought this HUGE mistake up they looked at me like I was crazy. " Of course it will handle the load "


    No, because it will NOT always have 120k capacity depending on everything from OAT to humidity levels.

Page 2 of 3 FirstFirst 123 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event