Page 1 of 2 12 LastLast
Results 1 to 13 of 26
  1. #1
    Join Date
    Jul 2013
    Posts
    33

    Question Two Driers? One internal and one external?

    Hi, I have just moved into a new home and am now 'learning' my systems. Funny how when you buy a car you get a 'phone-book' sized instruction manual but when you buy a home you get the keys and nothing more, LOL....

    Anyway, I noticed on my Carrier 5-ton Heat-pump/AC condenser unit outside that I have an external Drier on the liquid line. I can see (looking through the fan from the top that there's a drier still installed internally?

    Why would a tech not remove the internal Drier if he intended to add one externally? Is this common practice?

    Thanks again

  2. #2
    Join Date
    Aug 2001
    Location
    Pavilion, NY
    Posts
    2,198
    While multiple driers are frowned upon as they can cause excessive drops in pressure,, if the system is otherwise functioning properly I would not worry about it. The one in the unit itself is factory installed and the installer may have opted to add eon without knowing there was one. If the system is opened for whatever reason, that would be the time to remove both and install 1 new one. It would be counter productive to remove it on a functional system in my opinion.
    ...

  3. #3
    Join Date
    May 2007
    Location
    DC Metro Area (MD)
    Posts
    3,371
    Are you sure it isn't a discharge line muffler? They can tend to look similar. Can you post a picture of what you're looking at?

    As for an internal drier, does it appear to be factory installed or field installed at some later point? I could be wrong, but I believe Carrier has shipped the drier with the outdoor unit (field installed) for quite some time, at least the past several years, so if there is one installed internal to the unit, it was added at some later point. And yes, when opening the refrigerant system it is best practice to remove the existing filter drier and install new.

  4. #4
    Join Date
    May 2000
    Location
    Indianapolis, IN, USA
    Posts
    34,613
    I think Ryan is right on this one.

  5. #5
    Join Date
    Jul 2013
    Posts
    33
    Quote Originally Posted by RyanHughes View Post
    Are you sure it isn't a discharge line muffler? They can tend to look similar. Can you post a picture of what you're looking at?

    As for an internal drier, does it appear to be factory installed or field installed at some later point? I could be wrong, but I believe Carrier has shipped the drier with the outdoor unit (field installed) for quite some time, at least the past several years, so if there is one installed internal to the unit, it was added at some later point. And yes, when opening the refrigerant system it is best practice to remove the existing filter drier and install new.
    I assumed it to be a drier as it's on the liquid side and it does appear to be factory. It appears to connected between the reversing manifold and the compressor with a pipe that resembles a p-trap.

    I'll see if I can shoot a pix although I'll have to lift the fan to see.......

  6. #6
    Join Date
    Jul 2013
    Posts
    33
    Well, here's an attachment (I hope)....

    Name:  IMG_0283.jpg
Views: 241
Size:  58.2 KB

  7. #7
    Join Date
    Aug 2001
    Location
    Pavilion, NY
    Posts
    2,198
    It's a muffler.. That unit looks pretty ancient. The compressor terminal block cover is missing.....let a sleeping dog lie
    ...

  8. #8
    Join Date
    Jul 2013
    Posts
    33
    Well, the house was built in 2002 so unless they installed a used condenser somewhere along the line my guess is that it's around 10 years old.......

  9. #9
    Join Date
    Dec 2002
    Location
    Houston,Tx.
    Posts
    16,122
    Quote Originally Posted by kangaroogod View Post
    It's a muffler.. That unit looks pretty ancient. The compressor terminal block cover is missing.....let a sleeping dog lie
    Its a drier, someone probably change the coil and instead of recovering and taking the internal drier out, they just pumped the unit down and installed a new drier at the coil.
    __________________________________________________ _______________________
    “Experience is a hard teacher because she gives the test first, the lesson afterwards". - Vernon Law

    "Never let success go to your head, and never let failure go to your heart". - Unknown

  10. #10
    Join Date
    Feb 2009
    Location
    Tallahassee, FL
    Posts
    6,051
    That compressor looks like its running Hot.

    Side question.....what made you think about 2 driers? Are you in the industry?

  11. #11
    Join Date
    Feb 2009
    Location
    Tallahassee, FL
    Posts
    6,051
    Quote Originally Posted by Mr Bill View Post
    Its a drier, someone probably change the coil and instead of recovering and taking the internal drier out, they just pumped the unit down and installed a new drier at the coil.
    No its not Mr bill. Hes right its a muffler.

  12. #12
    Join Date
    Dec 2002
    Location
    Houston,Tx.
    Posts
    16,122
    Quote Originally Posted by SBKold View Post
    No its not Mr bill. Hes right its a muffler.
    Looked like a bi flow drier, but I could be wrong, we have probably 100 HP's in Houston, so not to good with them.
    __________________________________________________ _______________________
    “Experience is a hard teacher because she gives the test first, the lesson afterwards". - Vernon Law

    "Never let success go to your head, and never let failure go to your heart". - Unknown

  13. #13
    Join Date
    Jul 2013
    Posts
    33
    Quote Originally Posted by SBKold View Post
    That compressor looks like its running Hot.

    Side question.....what made you think about 2 driers? Are you in the industry?
    Hot? There's some paint missing from the top and some still on the sides (of the top).....Just looks like weather related wear to me.

    I have done (*sigh) my share of auto a/c repairs over the years....I'm no expert but I am fairly savvy about refrigeration systems, at least to an extent that's many times more than your typical homeowner.....

    Edit: Oh, the wiring cover I knocked off by accident. It's back in place now.....

Page 1 of 2 12 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