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  1. Thread: Capacitor Rules

    by garyed
    Replies
    78
    Views
    2,041

    Below is a print out & also a series calculator...

    Below is a print out & also a series calculator on this page: http://www.oceanhvac.com/motor/
  2. Your supply is pretty much always going to have...

    Your supply is pretty much always going to have higher humidity than your return in AC mode. If you find a psychrometric calculator you'll see the colder air even though the RH is higher still...
  3. Thread: Capacitor Rules

    by garyed
    Replies
    78
    Views
    2,041

    If you had a 5 on the truck you could have made a...

    If you had a 5 on the truck you could have made a 40/7.5 with the Turbo & added the 5 in parallel. That kind of defeats the purpose of the Turbo though. I don't ever remember running into a dual...
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    The Diversitech motor used here is a 1/3 to 1/6...

    The Diversitech motor used here is a 1/3 to 1/6 hp. & uses 5uf or a 7.5uf depending if its 208v. or 230v. Their 1/2 to 1/5 hp. model uses a 12.5uf or a 10 uf cap depending on the voltage too. ...
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    2,663

    I wasn't saying that you did anything wrong & I...

    I wasn't saying that you did anything wrong & I apologize for using poor taste in bringing up the money point in this thread but the new system just reminded me of my theory & I couldn't resist. It's...
  6. Thread: Capacitor Rules

    by garyed
    Replies
    78
    Views
    2,041

    Just a little FYI because i had the same problem...

    Just a little FYI because i had the same problem with a Rheem. Just add a 7.5 uf cap in series to your fan side of the 35/5 cap & you'll end up with your 3 uf for the fan & you won't have to go back.
  7. I think you're over thinking this. A 3 story rise...

    I think you're over thinking this. A 3 story rise is nothing to be concerned about so I wouldn't worry about whether there are hard shut off TXV's or liquid line solenoids or anything else for that...
  8. Replies
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    If the motor was running backwards then the unit...

    If the motor was running backwards then the unit would trip out on high head long before the motor would trip out on overload. I'm giving the OP a little credit for checking system pressures which...
  9. Replies
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    It sounds like you've pretty much done everything...

    It sounds like you've pretty much done everything you can. It also sounds like you don't have any access to the duct work or else you would have already checked that for leaks too. Your pressures...
  10. Replies
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    Your last set of numbers before the new condenser...

    Your last set of numbers before the new condenser gave no indication that there was any problem at all with the old condenser or the metering, so it's not unexpected that installing a new condenser...
  11. Replies
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    I doubt it has anything to do with a clogged coil...

    I doubt it has anything to do with a clogged coil or the blade height or anything physical like that as long as the blade turns unobstructed. None of those things are going to cause the motor to draw...
  12. Replies
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    2,663

    Looking at the data plate on the unit 1.3 amps...

    Looking at the data plate on the unit 1.3 amps seems awful low for a 1/3 hp motor. Assuming it really is 1075 RPM then 1/4 hp or 1/5 hp generic should be closer to 1.3 amps than a 1/3 hp. If the new...
  13. If I understand what the OP said it sounded like...

    If I understand what the OP said it sounded like he used the correct size piston but just a different style since it was a mismatched system. The Goodman piston would not work with whatever brand...
  14. Replies
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    Those numbers don't sound bad at all. The TD...

    Those numbers don't sound bad at all. The TD across the coil should be a little better but without knowing the humidity or WB it's hard to say what it should be. It looks just a little undercharged...
  15. Replies
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    If your numbers are right then it doesn't sound...

    If your numbers are right then it doesn't sound over charged to me. With 120* line temp you have 0* SC. Even on a piston system you're still going to have a good bit of SC with an over charge....
  16. I think you have a valid point but IMO it should...

    I think you have a valid point but IMO it should be used as a defense if there ever is a law suit & not against the law itself. The way i understand it, the law only gives a person the right to sue...
  17. Replies
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    A .059 piston would be for a 2 ton so you should...

    A .059 piston would be for a 2 ton so you should have something more like a .067 piston for a 2.5 ton. I don't know if that will solve your problem but at those conditions your SH should be very low,...
  18. Thread: Heat Pump

    by garyed
    Replies
    40
    Views
    930

    Just a little Goodman info: The ARUF25.... AH...

    Just a little Goodman info: The ARUF25.... AH ships with the correct piston (.051) for a 1.5 ton unit so the piston should be correct for the OP's unit unless someone changed it. The GSZ14018 is a...
  19. Thread: Psig and psia

    by garyed
    Replies
    81
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    1,562

    Since elevation effects things like sensible,...

    Since elevation effects things like sensible, latent & mass flow rate then maybe it also effects the sealed units pressures. I have no knowledge that it does but it sure seems logical to me that it...
  20. Replies
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    If that thermostat has an "off" switch & I think...

    If that thermostat has an "off" switch & I think it does, then you have to be sure it is never turned to the off position or the AC will never shut off.
  21. Thread: Psig and psia

    by garyed
    Replies
    81
    Views
    1,562

    I had to go back to a calculator I put up a few...

    I had to go back to a calculator I put up a few years ago to check & see which i used in the formula for nitrogen pressure: http://www.oceanhvac.com/pressure.php

    I did use PSIA but it's a lot...
  22. Replies
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    707

    Pretty much any digital t-stat you buy today is...

    Pretty much any digital t-stat you buy today is going to have an off mode which will defeat the purpose of the two wire system here. The only one I've seen online that is not is the Honeywell...
  23. Replies
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    Once you understand the concept then you can...

    Once you understand the concept then you can decide what you want to do. I'm assuming the system is designed for a simple heat only t-stat.
    1 - With the furnace switch set to heat:
    When the two...
  24. Replies
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    I don't see how that can work in cooling if its...

    I don't see how that can work in cooling if its anything like the system I think it is.
  25. Replies
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    707

    That obviously will work but if anyone decides...

    That obviously will work but if anyone decides turn the t-stat to cool mode with the cool switched at the furnace it will work in reverse. In that case it will not come on when the t-stat calls for...
  26. I'm not disagreeing about the differences in the...

    I'm not disagreeing about the differences in the glide in the two refrigerants & I pointed that out as a possible drawback of 407c but my point was more about the business advantages of the two...
  27. Replies
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    If you have the switch on the furnace set to cool...

    If you have the switch on the furnace set to cool & the two t-stat wires disconnected then it will call for cooling & your blower is supposed to be running. The system is designed for a two wire heat...
  28. It's very likely that the biggest reason...

    It's very likely that the biggest reason manufacturers changed to 410a over 407c is because it would be better for business. It created a new market of equipment & most of us in the business have...
  29. Replies
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    2,519

    I remember having that problem a couple times in...

    I remember having that problem a couple times in the old Carrier 40AQ models when you tightened the flare fitting too tight on the 3/8 connector at the AH. I don't know if it was the wrench holding...
  30. Replies
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    I think you guys are forgetting we're talking...

    I think you guys are forgetting we're talking about Phoenix where the Manual J design temp is 108 with -14 design grain difference. So at 85 & humidity as high as 40% you still are only going to...
  31. Replies
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    I'm in your age bracket so the only reason I...

    I'm in your age bracket so the only reason I pound my chest is to make sure my ticker is still working<g>. When you think you don't have anything to learn, you need to learn to think more clearly.
  32. Replies
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    Exactly, That's why i edited my post to be sure...

    Exactly,
    That's why i edited my post to be sure it was not misinterpreted.
  33. Replies
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    With a restricted dryer you're not going to see...

    With a restricted dryer you're not going to see normal suction pressure & SH so I would not consider that as a possibility. I have been wrong before though.
  34. Replies
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    Looking at the numbers I would suggest checking...

    Looking at the numbers I would suggest checking the piston. If the piston is over sized or not seating properly, that would account for the low head pressure. If it was under charged & over feeding...
  35. Replies
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    If the TXV is working properly then removing gas...

    If the TXV is working properly then removing gas should not have much effect on your SH. Let's say the TXV is set to 12 SH & the unit is overcharged. It is still going to try & meter back the...
  36. Replies
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    Your numbers look almost perfect to me except for...

    Your numbers look almost perfect to me except for the discrepancy between the wetbulb & humidity.
  37. Replies
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    On 13 SEER & up which is pretty much any 410A...

    On 13 SEER & up which is pretty much any 410A unit you'll run across the 15/30 rule of thumb usually works out. 15 over OA for the condenser temp & 30 under return ambient for the evaporator temp...
  38. Replies
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    I would recommend a new system too but I always...

    I would recommend a new system too but I always like to give my customer the option as long as they know the risk. I have a condo project that I've been servicing for over 20 years where the AH's are...
  39. Replies
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    The only way i know to get an impacted coil clean...

    The only way i know to get an impacted coil clean is to remove it ,use something strong like foam & clean & wash it out with a pressure hose. Trying to clean it while it's still in the system is...
  40. Replies
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    Not really because a dirty coil can be deceiving...

    Not really because a dirty coil can be deceiving & have a relatively normal TD. You're only one degree away from freezing & someone could have already overcharged it to keep it from freezing.
  41. Replies
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    Low suction pressure with low SH are definite...

    Low suction pressure with low SH are definite signs of not moving enough air across the coil. Going by the age of the unit my guess would be that the evaporator coil is impacted with dirt & needs a...
  42. Replies
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    Though i may have my own doubts I still don't see...

    Though i may have my own doubts I still don't see that as a discrepancy. If there is a God that created the universe then relaying his words in writing through one of his creations would be a simple...
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    I know that evolution in no way contradicts the...

    I know that evolution in no way contradicts the existence of God but I don't know what it is about evolution that contradicts the Bible. My guess is that it has to do with some literal translations...
  44. Replies
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    Having respect & compassion for those who do not...

    Having respect & compassion for those who do not believe the same as we do does not mean we can't defend ourselves against those who do not. If all Muslims had respect & compassion for those who did...
  45. Replies
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    This thread was originally started to get an...

    This thread was originally started to get an alternate view from those who do not believe in God & to see how they perceive life & death. It was never meant to promote or discredit any ones beliefs...
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    If you guys really want to know about evolution &...

    If you guys really want to know about evolution & creation, take a look at this:

    I may have posted it before but I couldn't resist again with this conversation.
  47. Replies
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    That's a pretty interesting question especially...

    That's a pretty interesting question especially as it relates to God. I don't think there is any single answer because belief is such a personal thing that there can be many different reasons...
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    No one here can produce the evidence you ask for...

    No one here can produce the evidence you ask for because it is simply is not possible. Even if someone claims to have had direct contact with God, I'm sure it wasn't video taped so there would still...
  49. Replies
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    That's a pretty good analogy & it points out the...

    That's a pretty good analogy & it points out the contradiction between God & religion.
  50. Replies
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    I can see where one could interpret that to fit...

    I can see where one could interpret that to fit the being doomed for eternity for not believing scenario but I would not interpret it that way. It speaks of suffering God's wrath for not believing...
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