Results 1 to 6 of 6
  1. #1
    Join Date
    Feb 2012
    Location
    New York City
    Posts
    106

    DX dehum makeup air units

    Looking at Reznor, Aaon, Daikin-McQuay Rebel, other mfg's hot gas reheat units. For a luxury condo corridor unit. Any experience good or bad? The Rebel is new, and I see a lot of substitutions to Reznors. Appreciate the help.

  2. #2
    Join Date
    Apr 2012
    Location
    Paper Street Soap Company
    Posts
    2,304
    I hate the Aaons and any unit that uses hot gas reheat is less efficient than a Unit like a Munters that uses a desiccant wheel that's re-activated to remove humidity.

  3. #3
    Join Date
    Jan 2008
    Location
    Dallas ,Texas
    Posts
    3,705
    I've seen some Addison units seem ok .
    UA 100

    It takes three people to do anything around here. Two do the work, one explains to the crowd of people who showed up when they seen smoke and flames.

  4. #4
    Join Date
    Feb 2012
    Location
    New York City
    Posts
    106
    Quote Originally Posted by Six View Post
    I hate the Aaons and any unit that uses hot gas reheat is less efficient than a Unit like a Munters that uses a desiccant wheel that's re-activated to remove humidity.
    Yeah Munters and similar desiccant systems are a better option performance wise but I think $/CFM is too high for the developer. The architect won't give me the space either. My battle is for straight risers. It's only about a thousand CFM for corridors. I've got a unit with an enthalpy wheel for general vent which is much bigger. At least hot gas isn't frowned upon by 90.1 since it's site recovered energy. Electric and hot water reheat is the worst. I've seen jobs where that goes in and runs on the boiler because you can't get anyone to agree to something as easy as a desuperheeater on the chiller. Because the site isn't enormous code doesn't require a widely available equipment feature. Looking forward to IECC 2012/90.1-2010 which requires enthalpy recovery down to I think 30% OA.
    I hope I helped!

    Feel free to contact me and other users here for more detailed assistance within the context of a contract. Advice and opinions are provided here "as-is" without any warranties, guarantees or acceptance of liability for use, misuse, or accuracy of advice given. (Gotta keep my legal team off my back at work.)

  5. #5
    Join Date
    Apr 2012
    Location
    Paper Street Soap Company
    Posts
    2,304
    Yea they're proud of those units.

  6. #6
    Join Date
    Jun 2001
    Location
    Northwest Indiana
    Posts
    1,302
    Ive seen the reznor set up
    fairly simple and they use an FX controller for all unit operation.
    If you cant fix it right, try again.

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