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What size is this?

EdTheHeaterMan
EdTheHeaterMan Member Posts: 3,205
Does any long timers recognize this model number and can tell me the size?



The load calc for this home is 32,323 btu and I think this is a 3 ton, but I want to be sure. I will be replacing system with 3 Ton but I want to know if this is a 3 ton or larger? This way I can inform the customer of the difference he may experience with having the proper size. Better humidity control and longer recovery time on start up and the like.

Better to let them know what to expect in the beginning then to try to explain after the fact. From what I see here I can guess that this is a 9.? SEER unit from 1988ish. Because the logo on the fan housing has 90 on the sticker and the serial number has 88 in the date code area. Also the minimum 10 seer was established in 1992. That is why I’m looking for a “long-timer”.
Edward Young
Retired HVAC Contractor from So. Jersey.
Services first oil burner at age 16
P/T trainer for EH-CC.org

Comments

  • unclejohn
    unclejohn Member Posts: 1,757
    Is there any info on the compressor?
    mattmia2
  • EdTheHeaterMan
    EdTheHeaterMan Member Posts: 3,205
    edited July 2020
    Son did not get that info. I teach him everything I know and still, he don't know nothing!

    I hope the 63 in the third and fourth position does not mean 5 ton or the -5- for that matter
    Edward Young
    Retired HVAC Contractor from So. Jersey.
    Services first oil burner at age 16
    P/T trainer for EH-CC.org
  • EdTheHeaterMan
    EdTheHeaterMan Member Posts: 3,205
    edited July 2020
    Back that old I believe a 5 ton would need at least a 40 amp circuit or more. I'm hoping for 3-ton!
    Edward Young
    Retired HVAC Contractor from So. Jersey.
    Services first oil burner at age 16
    P/T trainer for EH-CC.org
  • unclejohn
    unclejohn Member Posts: 1,757
    Well if I had to guess I say 40K BTU
  • ChrisJ
    ChrisJ Member Posts: 12,881
    unclejohn said:

    Well if I had to guess I say 40K BTU

    3.33 ton?
    Seems like an odd size.
    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
  • EdTheHeaterMan
    EdTheHeaterMan Member Posts: 3,205
    Not exactly looking for a guess. Hoping that an old-timer might have used this brand back in the late 80's

    My trouble is that I never used that brand or worked on that brand and I don't recognize the label or what brand this is.
    Edward Young
    Retired HVAC Contractor from So. Jersey.
    Services first oil burner at age 16
    P/T trainer for EH-CC.org
  • JUGHNE
    JUGHNE Member Posts: 9,770
    This does not look like Lennox numbers, however just to show some illogical coding......a Lennox 41 is 3 tons.....46 is 3.5 tons....a 26 is two tons. From 1980 Lennox service info book.

    Any ID on the inside coil or air handler?
  • mattmia2
    mattmia2 Member Posts: 5,561
    According to the rating plate it draws about 4 kw. It is likely to have an EER between 6 and 8 or so. That would get you around 3 tons.
  • ChrisJ
    ChrisJ Member Posts: 12,881
    > @mattmia2 said:
    > According to the rating plate it draws about 4 kw. It is likely to have an EER between 6 and 8 or so. That would get you around 3 tons.

    The problem is he needs to know what it actually is.

    @EdTheHeaterMan wouldn't it be safer to go there and do a quick heat gain?
    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
  • mattmia2
    mattmia2 Member Posts: 5,561
    ChrisJ said:

    > @mattmia2 said:

    > According to the rating plate it draws about 4 kw. It is likely to have an EER between 6 and 8 or so. That would get you around 3 tons.



    The problem is he needs to know what it actually is.



    @EdTheHeaterMan wouldn't it be safer to go there and do a quick heat gain?

    It could be 2.5 ton or 3.5 ton, but it probably isn't 2 ton or 4 ton. Absent of the compressor model or the manufacturer's catalog which would tell you everything, that is probably the best you can do. The metal ratings plate makes me think it is a bit older than 1988. The actual capacity will vary a bit depending on actual site conditions anyhow.

    He did a heat gain, he just wants to tell the owner how performance may differ from the current system.
    ChrisJ
  • Steamhead
    Steamhead Member Posts: 15,350
    Why not head over to HVAC-Talk and ask them?

    https://www.hvac-talk.com/vbb/
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
  • Ironman
    Ironman Member Posts: 6,877
    That looks like an old Sears unit. Their model numbers made no sense as far the size.

    If I could find my old Carrier Blue book, I could probably ID it.
    Bob Boan
    You can choose to do what you want, but you cannot choose the consequences.
  • mattmia2
    mattmia2 Member Posts: 5,561
    you could probably find the sears catalog if it is indeed sears
  • unclejohn
    unclejohn Member Posts: 1,757
    My guess was Sears or Westinghouse. Manufactures often used a 40K BTU compressor on there 3ton models in the 1970's
  • Ironman
    Ironman Member Posts: 6,877
    @EdTheHeaterMan
    Does anyone know what brand it is?
    Bob Boan
    You can choose to do what you want, but you cannot choose the consequences.
  • ChrisJ
    ChrisJ Member Posts: 12,881
    I'm betting Weather king
    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
  • EdTheHeaterMan
    EdTheHeaterMan Member Posts: 3,205
    Thanks everyone for your assistance. We have settled on a 3 ton system. And I believe the old system is not far from three or 3.5 tons
    Edward Young
    Retired HVAC Contractor from So. Jersey.
    Services first oil burner at age 16
    P/T trainer for EH-CC.org
  • Ironman
    Ironman Member Posts: 6,877
    What brand was it?
    Bob Boan
    You can choose to do what you want, but you cannot choose the consequences.
  • pecmsg
    pecmsg Member Posts: 2,901

    Thanks everyone for your assistance. We have settled on a 3 ton system. And I believe the old system is not far from three or 3.5 tons

    Sizing by the old unit is never a good idea. Several on line programs available to determine the proper size!
    mattmia2
  • ChrisJ
    ChrisJ Member Posts: 12,881
    > @pecmsg said:
    > (Quote)
    > Sizing by the old unit is never a good idea. Several on line programs available to determine the proper size!

    It's a good idea if it's sized right.

    If.
    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
  • EdTheHeaterMan
    EdTheHeaterMan Member Posts: 3,205
    Found out the old unit was Addison 3 ton. the load calc is 32.323 and all is right in the world. :)


    ...unless you want to talk politics. Then... nothing is right,

    ...or left, or red, or blue, or digital, or analog, or... or ...or ... Just Vote for @HVACNUT for President of Thermostat States of America
    Edward Young
    Retired HVAC Contractor from So. Jersey.
    Services first oil burner at age 16
    P/T trainer for EH-CC.org