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410a/r22 Chart

Does Anyone know where I can found 
410a/r22 pressure  compare to outdoor ambient temperature chart?

Comments

  • mattmia2
    mattmia2 Member Posts: 6,688
    what do you mean compart to ambient?

    you can find charts that show the boiling point at various pressures but the suction and discharge pressures will vary depending on the load on the system and the design of the system. you need to measure subcooling or superheat to measure the chare depending on the type of metering device.
  • STEVEusaPA
    STEVEusaPA Member Posts: 5,881
    Airflow first before worrying about pressures.
    steve
  • HVACNUT
    HVACNUT Member Posts: 4,765
    It was literally the first thing on a Google search. 
  • ratio
    ratio Member Posts: 3,292
    The Danfoss Ref Tools app has a nice refrigerant slider that is basically a P/T chart for lots of refrigerants. I use it occasionally.
    STEVEusaPARPK
  • STEVEusaPA
    STEVEusaPA Member Posts: 5,881
    edited July 22
    HVACNUT said:

    It was literally the first thing on a Google search. 

    Might not be what he's looking for. Google 'Approach method' or "Checking the Charge without gauges".
    Combined with the other post, putting gauges on the equipment should not be the first thing you do. Airflow is first.
    Download the measurequick app. You can do many of the diagnosis for free. Advanced features and printable/email results cost a few bucks, but you can get pretty good idea for troubleshooting.

    I'm still working on my 'Approach Method' app or I'd share it.

    steve
    HVACNUT
  • johnjohn89
    johnjohn89 Member Posts: 65
    HVACNUT said:
    It was literally the first thing on a Google search. 
    Thanks but I am not looking for pt chart
  • johnjohn89
    johnjohn89 Member Posts: 65
    @all thanks guys Iam not looking for pt chart
  • ratio
    ratio Member Posts: 3,292
    Huh. What are you looking for then?
  • johnjohn89
    johnjohn89 Member Posts: 65
    ratio said:
    Huh. What are you looking for then?
    For example! R410a at embient temperature 100 degree, head pressure should be around
    375 to 400 psi ! Thats what am I looking for something like that chat?
  • johnjohn89
    johnjohn89 Member Posts: 65
    @allFor example! R410a at embient temperature 100 degree, head pressure should be around
    375 to 400 psi ! Thats what am I looking for something like that chat?
    Iam look for chart for head pressure and suction pressure compare to different ambient temperature.
  • pecmsg
    pecmsg Member Posts: 3,339

    @allFor example! R410a at embient temperature 100 degree, head pressure should be around
    375 to 400 psi ! Thats what am I looking for something like that chat?
    Iam look for chart for head pressure and suction pressure compare to different ambient temperature.

    You need to measure Super Heat and Subcooling, along with air flow.
  • johnjohn89
    johnjohn89 Member Posts: 65
    @all thanks everyone!
  • pedmec
    pedmec Member Posts: 672
    head pressure above ambient depends on the seer rating of unit. the higher the seer rating the lower the head pressure above ambient.

  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 12,664
    people say add 40 psi to temp at ambient that is a rough rule of thumb not to be relied on.
  • ChrisJ
    ChrisJ Member Posts: 13,562

    people say add 40 psi to temp at ambient that is a rough rule of thumb not to be relied on.


    I agree with pedmec.
    I've seen lower seer units running the liquid line hot while higher seer units it's barely above ambient, so little you almost can't tell by hand.
    Single pipe quasi-vapor system. Typical operating pressure 0.14 - 0.43 oz. EcoSteam ES-20 Advanced Control for Residential Steam boilers. Rectorseal Steamaster water treatment