Results 1 to 6 of 6
  1. #1
    Join Date
    Jul 2012
    Location
    venice ca
    Posts
    4

    Supply/Retrn temp question- prtble A/C

    i have this apc ac. do these numbers look acceptable?
    thank u in advance
    Attached Images Attached Images  

  2. #2
    Join Date
    Sep 2010
    Location
    Western, MO
    Posts
    871
    Are you in the desert?

    jim
    Common sense isn't very common anymore.

  3. #3
    Join Date
    Jul 2012
    Location
    venice ca
    Posts
    4
    im in los angeles

  4. #4
    Join Date
    Jan 2009
    Location
    Keokuk, IA
    Posts
    5,520
    Hard to say without knowing the design airflow/ton. But if that remote RH and temperatuer is correct, you should have a dry coil. I think protables are usually only 350CFM/ton or less, so I'd say a 16F delta T with humidity that low isn't very good.

  5. #5
    Join Date
    Jul 2012
    Location
    venice ca
    Posts
    4
    thanks for that. ive done some research and have the factory service manual. its a 2speed/13000btu unit. what i found odd is the cfm in the specs, low=450 and high=650
    with the unit being a little over 1ton, 650cfm is way too high for job. BTW the coil is NOT dry, it condensates and a pump gets it outa there. i was getting 20f delta T on the low setting and 12-13f on the high setting. its a quality unit/ its got ebmpapst impellors for the condensor and the evaporator. so what i did is run an extra 10uf cap in parallel w/the low speed cap. that increased the cfm on the low setting and got me 16f.

  6. #6
    Join Date
    Jul 2012
    Location
    venice ca
    Posts
    4
    the temp seems right but the humidy is off. its working pretty good right now.

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