2013



Results 1 to 19 of 19
  1. #1
    Join Date
    Jul 2006
    Location
    WALES
    Posts
    30
    Rep Power
    0

    R410a gauge/manifold fittings


    I thought that all R410 schrader fittings for you to connect your gauges were supposed to be 5/16" to stop you using the wrong gauges, been to one today that had the normall 1/4 " which is the first ive seen. is this normal ?



  2. #2
    Join Date
    Feb 2007
    Location
    UK
    Posts
    2,176
    Rep Power
    25

    Re: R410a gauge/manifold fittings

    I might be wrong... (it have happened once before)

    But I seem to remember that it's only here in Europe we use the 5/16".

    If that's right, you were looking at a "grey" import...

  3. #3
    Join Date
    Sep 2003
    Location
    ISRAEL
    Age
    62
    Posts
    3,618
    Rep Power
    22

    Re: R410a gauge/manifold fittings

    You are not wrong.

    It is 5\16 and its all over the world because of the high pressure.

  4. #4
    Join Date
    Jul 2006
    Location
    WALES
    Posts
    30
    Rep Power
    0

    Re: R410a gauge/manifold fittings

    One from these guys
    http://www.cooleasy.co.uk/product_wall.htm
    That are pre gassed, and as such do not require a professional installation.

  5. #5
    Join Date
    Oct 2001
    Location
    Nottingham UK
    Posts
    4,698
    Rep Power
    28

    Re: R410a gauge/manifold fittings

    Quote Originally Posted by Rhew View Post
    One from these guys
    http://www.cooleasy.co.uk/product_wall.htm
    That are pre gassed, and as such do not require a professional installation.
    I nearly threw up reading the cheesy testimonials http://www.cooleasy.co.uk/testimonials.htm

    Who are these guys?

    So, basically, Daikin, Mitsubishi, Hitachi, Toshiba et al, do not require a 'Professional' installation because they are 'pre-gassed'

    What a statement.

    Is it a co-incidence that both Rhew and these guys are in Wales??
    Last edited by frank; 29-07-2008 at 10:14 PM.
    I'm back on the Pale

  6. #6
    Join Date
    Jul 2006
    Location
    WALES
    Posts
    30
    Rep Power
    0

    Re: R410a gauge/manifold fittings

    He he Frank
    Go and have a look at the DIY instructions.
    http://www.cooleasy.co.uk/diy_installation.htm

  7. #7
    Join Date
    Apr 2006
    Location
    stafford
    Age
    32
    Posts
    991
    Rep Power
    10

    Re: R410a gauge/manifold fittings

    Quote Originally Posted by Rhew View Post
    He he Frank
    Go and have a look at the DIY instructions.
    http://www.cooleasy.co.uk/diy_installation.htm
    i feel sick
    Paul


    "KEEP IT COOL"

  8. #8
    Join Date
    Jun 2008
    Location
    NZ
    Posts
    16
    Rep Power
    0

    Re: R410a gauge/manifold fittings

    I'd love to know there warranty percentages.... Its Companies like this that are ruining our trade!

  9. #9
    Join Date
    Jul 2008
    Location
    United States
    Age
    44
    Posts
    10
    Rep Power
    0

    Re: R410a gauge/manifold fittings

    Just a quarter here in The USA...For 410!!!! I have a combination r-22 R410 manifold set. Also, at it's inception 410 was reportedly a problem with existing line sets, Not so . Most of the time we are blowing them out with dry Nitrogen, some times a 134a flush and the only problems that seem to come up are TXV's (Usually manufactuered defects) and they are few and far Between... Just thought I would pass it on. A side note (the TXV problems only seem to revolve around certain installers, I less than 1% call back on installs for over two years. yet 20% of company over time calbacks are from installers( if you catch my point)

  10. #10
    Join Date
    Jun 2008
    Location
    NZ
    Posts
    16
    Rep Power
    0

    Re: R410a gauge/manifold fittings

    Hi Clip Prince,
    Not sure what types of systems you work on but the oils some manufacturers use (Daikin - polyether) does not mix well with the Mineral oil and this can cause majour problems in your system. maybe worth investing in some dedicated gauges for R410A. The problems you see with TX valves amy be due to contamination caused by using a common gauge set.
    I've seen first hand the oils combining to form a nasty wax..

    just my 2 cents worth...

  11. #11
    Join Date
    Jul 2008
    Location
    United States
    Age
    44
    Posts
    10
    Rep Power
    0

    Re: R410a gauge/manifold fittings

    Quote Originally Posted by Reefer1 View Post
    Hi Clip Prince,
    Not sure what types of systems you work on but the oils some manufacturers use (Daikin - polyether) does not mix well with the Mineral oil and this can cause majour problems in your system. maybe worth investing in some dedicated gauges for R410A. The problems you see with TX valves amy be due to contamination caused by using a common gauge set.
    I've seen first hand the oils combining to form a nasty wax..

    just my 2 cents worth...


    That was exactly my point,
    Usually working residential, but any way. On the installs that I have done, and It is alot, I have found that blowing out the refrigerant lines with nItrogen works. I get few call backs as I stated. But to further this I think the txv's failing is directly related to Installers not blowing out the refrigerant lines. Lastly, I have dedicated gauge sets, for the last two years, I have been using the combo set and had ONE!!! a/c call back from last year (It was a leaking condensate hose by the way)...

    I have one more 410 note--- Make sure you run these units atleast 15 minutes before calling it charged. If you start it up and immediately take subcool you will be off sometimes as much as a pound (I know we all know it, but I am talking about what we do)

    I hope I was a little more clear this time. the number one thing I was saying was to blow it out, but I don't see any difference between one guage set and the other in results (but then I purge my set too) TKS,

  12. #12
    Join Date
    Jul 2008
    Location
    United States
    Age
    44
    Posts
    10
    Rep Power
    0

    Re: R410a gauge/manifold fittings

    P.S. Usually Trane, but more and more other brands as prices sky rocket

  13. #13
    Join Date
    Jul 2008
    Location
    United States
    Age
    44
    Posts
    10
    Rep Power
    0

    Re: R410a gauge/manifold fittings

    Also, that is in no way disputing the mixing of refrigerant oils. I have also seen the results, Usually at the expansion valve. but like most problems on newer systems I atribute it to the installers.

    Trane technical advocated the use of a combo set by the way, initially in the PURON Days such a thing was a sin punishable by death.

    I am curious about the port sizes being different, here 134a is different but 410 and 22 are 12 are the same...

  14. #14
    Join Date
    Jul 2006
    Location
    WALES
    Posts
    30
    Rep Power
    0

    Re: R410a gauge/manifold fittings

    Frank
    I did not install these or recomend them they were installed by the companys own electrician they have fitted three of them and suprise suprise none have any gas in them after install. I asked him have they been vacumed out properly? his answer was vaced out? was that then?. he said they followed the instructions given and it states before swiching on you should crack open the high side and purge the line.
    I thought all 410 connections was supposed to be 5/16" in the uk so now know different !

  15. #15
    Join Date
    Nov 2007
    Location
    London
    Posts
    482
    Rep Power
    7

    Re: R410a gauge/manifold fittings

    huh what a comment, no wonder nothing ever works and yes the trades people are getting rougher and rougher, half of the guys in this country aren't even licensed in their job.
    I can't believe that they even stated this on the site...

  16. #16
    Join Date
    Jan 2003
    Location
    Crewe, United Kingdom
    Age
    48
    Posts
    768
    Rep Power
    12

    Re: R410a gauge/manifold fittings

    I've seen 1/4 inch flair on R410 units before, they were cheap and not cheerful from Costco,

    These are the guys who need to be stamped out for selling stuff to the public whilst giving them the impression that they are an easy DIY fix. They are just box shifters who have gotten their hands on a container load of units from China.
    Karl

  17. #17
    Join Date
    Oct 2003
    Location
    Belgium
    Age
    52
    Posts
    5,497
    Rep Power
    22

    Re: R410a gauge/manifold fittings

    Quote Originally Posted by frank View Post
    So, basically, Daikin, Mitsubishi, Hitachi, Toshiba et al, do not require a 'Professional' installation because they are 'pre-gassed'
    According to EN378 this isn't true. There must be a pressure and a leaktest.
    It's better to keep your mouth shut and give the impression that you're stupid than to open it and remove all doubt.

  18. #18
    Join Date
    Nov 2006
    Location
    Cheshire, UK
    Age
    46
    Posts
    361
    Rep Power
    8

    Re: R410a gauge/manifold fittings

    Quote Originally Posted by Rhew View Post
    they followed the instructions given and it states before swiching on you should crack open the high side and purge the line.
    !


    Ah, that's OK then!



    I'll put my pressure testing gear, OFN bottles and Vacuum pump on ebay then!

    He who dies with the most Toys, WINS!

  19. #19
    Join Date
    May 2008
    Location
    midlands
    Age
    54
    Posts
    37
    Rep Power
    0

    Re: R410a gauge/manifold fittings

    Quote Originally Posted by sinewave View Post
    Ah, that's OK then!



    I'll put my pressure testing gear, OFN bottles and Vacuum pump on ebay then!


    Dont forget the Reclaim unit as well ...

Similar Threads

  1. Pressure Testing for R410a
    By Pooh in forum Tools and Calculators
    Replies: 33
    Last Post: 13-08-2008, 11:41 PM
  2. R410A pressure in air conditioning
    By irwinchong80 in forum Technical Discussions
    Replies: 4
    Last Post: 06-10-2007, 07:33 PM
  3. R410A - state of art
    By MrReds in forum Refrigerants
    Replies: 2
    Last Post: 04-03-2007, 11:56 PM
  4. Detection - is it air or R410A?
    By stalker in forum Technical Speculations
    Replies: 21
    Last Post: 24-02-2007, 02:48 AM
  5. R410A captube sizing for 2.5 bar / 35 psi pressure drop
    By DaBit in forum Technical Speculations
    Replies: 10
    Last Post: 27-11-2003, 10:05 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •