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  1. Replies
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    Thank you all for your great insights. I am...

    Thank you all for your great insights. I am replacing a 35/5 370 GE as I type.
  2. Assuming that you mean the internal...

    Assuming that you mean the internal overload/temperaure protection device is opening after a period of hour or hours running. If the expansion valve is causing this indirectly it is because the...
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    Why do run capacitors fail?

    The last few years I have seen a lot of run cap failures. It is easy money and all, but customers usually want to know why it failed. I can give them the glib "Made in Mexico/ China" answer but I'd...
  4. Thread: What next?

    by tchntch
    Replies
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    Laws and state certifications vary from state to...

    Laws and state certifications vary from state to state. Here in Wiscosin there is no requirement for technician liscensing. Maybe someone else from NC will join the thread with NC specifics.
    NATE...
  5. Paint thinner sounds like a terrible idea. In the...

    Paint thinner sounds like a terrible idea. In the old days we used R-11 as a flushing solvent but that is no longer legal, and incredibly expensive if available at all. There is a product called...
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    Lennox no longer makes a replacement for the...

    Lennox no longer makes a replacement for the Pulse conrol. Baso has been manufacturing one that will work for the last year which looks quite different from the one you describe. Mavbe someone else...
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    Yes, as others have said, there is no way to take...

    Yes, as others have said, there is no way to take perfectly accurate readings on a 40 degree March day. You will be lucky to have an indoor temp as high as 70 rather than the required 75-80. so your...
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    Another indirect check is CO in the exhaust. Bad...

    Another indirect check is CO in the exhaust. Bad secondary will result in 200ppm or much more. Normally under 50ppm. May also be some in the house, but not necessarily.
  9. Somewhere among all the numbers on most switches...

    Somewhere among all the numbers on most switches is a number series starting L___, such as L200 or L180. That is the temp trip point.
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    I shoot for 105 degree saturation temp on the...

    I shoot for 105 degree saturation temp on the high side, which is a fairly standard rating point. That is about 210 psi for R22, 330psi for R410a, etc. I then look for 5-20 degree superheat on the...
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    Thanks to both of you for the input. I've got...

    Thanks to both of you for the input. I've got plenty to work with when I get back there.
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    Thanks again Alcomech, I have been using the...

    Thanks again Alcomech,

    I have been using the IOM manual to try to calibrate the unit. Im not sure I have been doing it well. It would be better if it didn't do the constant back and forth search...
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    Thanks Alcomech. When you refer to no...

    Thanks Alcomech.

    When you refer to no "abnormal noise" do you mean to say that there will be some noise? All the boxes that I have found make this noise. It is audible below the boxes which are...
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    Thanks for the reply. It is nice to know that it...

    Thanks for the reply.
    It is nice to know that it is possible to quiet them down and I'm not beating a dead horse. I just have to figure out what I haven't done right. I guess I should try another...
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    Vari-Trane VAV noise

    I recently took over a building with about 30 these VAV boxes. They were built in 1995 and are what Trane refers to as analog units and use 3k zone sensors rather than 10k. As the air valve (damper)...
  16. Thread: Recycle R22?

    by tchntch
    Replies
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    1,088

    Thanks for the input. After taking a goodsniff of...

    Thanks for the input. After taking a goodsniff of it I think it is probably too far gone to recycle safely, but the info will be good for the future.
  17. Thread: Recycle R22?

    by tchntch
    Replies
    4
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    1,088

    Recycle R22?

    I have to replace a 35 ton compressor with a light burnout. What is your opinion on leaving the refrigerant in the system and recycling it through removable core acid filter driers? It used to be a...
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    What's the problem with Leak Lock. Works great...

    What's the problem with Leak Lock. Works great and I've never had a problem removing it. Are you thinking of Loctite?
  19. Replies
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    A lot of good ideas. I'm going to print this off...

    A lot of good ideas. I'm going to print this off and show it to my program director. Thanks
  20. Replies
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    Thanks for the input. We'd be selling it to get...

    Thanks for the input. We'd be selling it to get money for student tools and instruments. If we wanted to use it we'd have to buy evaps and boxes, etc. No bucks for that. Just thought if I could find...
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    Thanks for the reply. I've got ebay in the works...

    Thanks for the reply. I've got ebay in the works but I thought I'd give this a try first.
  22. Replies
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    My tech school has a number of 5-15 year old...

    My tech school has a number of 5-15 year old unused Tecumseh refrigeration condensing units as well as compressors and HVAC parts which were donated to us but we cannot use for instruction. Is there...
  23. Thread: Stumped

    by tchntch
    Replies
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    1,526

    Had this happen to a couple of units, but...

    Had this happen to a couple of units, but intermittently, when the G26 first came out. Failure to light pilot one out of maybe ten trials. After trying some of those other things I replaced the pilot...
  24. For Jim Davis you sound pretty knowledgeable...

    For Jim Davis
    you sound pretty knowledgeable about this so maybe you can clear up something for me. I've done startups on larger commercial waterheaters, boilers and furnaces, as well as clean and...
  25. Dry heat is what the chamber of commerce calls...

    Dry heat is what the chamber of commerce calls it. I did the opposite 10 years ago. From SoCal desert to Wisconsin.

    I prefer the desert because you can get outside any old time.We're having a warm...
  26. Thread: utility prices

    by tchntch
    Replies
    14
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    1,334

    So WI Nov 16 to Dec 19 Base cost for elec is...

    So WI Nov 16 to Dec 19
    Base cost for elec is $.089500 plus a $.2433 per day "customer charge" plus a non taxale customer charge of 3%. Ends up $54.79 for 473 therms for me


    NG base $1.57 per...
  27. Replies
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    GUYS I'm sorry I wasted your and my time...

    GUYS
    I'm sorry I wasted your and my time arguing with deejoe. I can see now that everyone is already aware of lack of knowledge. Please forgive a newbie:)
  28. When you checked the gas pressure did you remove...

    When you checked the gas pressure did you remove the air pressure tube from the burner box to the gas valve. If you didn't know, it is there to compensate for the fact that the pressure in the burner...
  29. Replies
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    Heat Pump vs Gas

    My textbook says heat pumps are not practical if you are in an area that doesn't require cooling. It doesn't really explain why but I'm guessing it would be because you're buying a year round unit...
  30. Dimming and thumping does not sound good. Have it...

    Dimming and thumping does not sound good. Have it checked by a pro soon. A Carrier pro would be best, especially if it's under warranty. Thermostat probably not a problem but have him look at it...
  31. It's pretty odd that the fan would come on at the...

    It's pretty odd that the fan would come on at the exact same time as the burner. Usually they will either fail open,and won't come on at all, or fail closed, and never shut off. Are you sure you...
  32. cn Most of the students that I get are older(25...

    cn
    Most of the students that I get are older(25 and up)and are looking for a change in their life after either being "dislocated by the economy" or they have figured out that their first choice of a...
  33. Replies
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    I must admit that deejoe may be right about 2...

    I must admit that deejoe may be right about 2 cycles per hour provided they are long cycles(and not the six minute cycles he wants),as you say, to ensure that the furnace is dried out. I was...
  34. BTW I'm the teachin' tech.

    BTW I'm the teachin' tech.
  35. Thanks for the reply pgmr, and the links. HEY...

    Thanks for the reply pgmr, and the links.

    HEY DEEJOE!
    So this is where you've been hiding:) I miss your input over on the "furnace question" thread. It's been extremely interesting and...
  36. Replies
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    Nat gas vs oil You might want to consider how...

    Nat gas vs oil
    You might want to consider how many homes in your area are using oil. I hear they are still very common in the east, but in our area over the last 10 years oil furnaces have been...
  37. cn Thanks for the reply but I guess I didn't...

    cn
    Thanks for the reply but I guess I didn't explain myself very well. The situation I'm talking about is this. Thermostat is set for 6 cycles per hour. The building is 50 degrees because of an...
  38. Replies
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    casturbo You said mouthful with regards to...

    casturbo
    You said mouthful with regards to efficiency vs. dependability. I learned a long time ago that service techs have 3 main responsibilities: safety, efficient operation, and dependability....
  39. This kind of relates to another thread. If your...

    This kind of relates to another thread. If your CT3200 is set for 6 cycles per hour,and you have an very cold day and the heat loss from the building equals the heat available from the furnace, how...
  40. pgrmr I have experienced the honeywell T8112...

    pgrmr
    I have experienced the honeywell T8112 cycle off and on at it's set cycle rate even though the temp is set well above the room temp on several ocassions at different jobsites. It's extremely...
  41. Replies
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    And yes, I think that AC sizing is more important...

    And yes, I think that AC sizing is more important though you usually get a quizzical, suspicious look from the customer when you try to tell them they would be more comfortable with a smaller size...
  42. Replies
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    I live and work in the north country now so we...

    I live and work in the north country now so we have kind of the opposite problem. Frequently more blower than we need for AC, but it doesn't seem to matter as much. You can usually reduce the cooling...
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    Perpetual That's a great idea. I bet it would...

    Perpetual
    That's a great idea. I bet it would work.
    As far as grasping the importance, it's probably not all that important. Just a mental exercise to try and figure out an answer to the...
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    By the way, the proper answer was 93,000 btu heat...

    By the way, the proper answer was 93,000 btu heat loss means install a 93,000 btu furnace. That's the rocket science part. Otherwise why bother with a load estimate at all. That was my recollection...
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    Robo is right. No point ignoring you. It's Comic...

    Robo is right. No point ignoring you. It's Comic relief. Get a clue. You did not know the answer to my question and use insults and bluster to cover it up. Keep the comedy coming.
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    As I said, the old lines can be used provided...

    As I said, the old lines can be used provided they are purged and cleaned properly according to the rather strict manufacturer mandated procedure (at least the manufacturers that I deal with demand...
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    I've been on call and working a lot the last two...

    I've been on call and working a lot the last two days so I've been kind of out of the loop here(midnight compressor last night). It looks as though the proper answer to my question is that the...
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    Thanks Robo. i'll keep that in mind.

    Thanks Robo. i'll keep that in mind.
  49. Replies
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    deejoe I asked politely for an answer to what...

    deejoe
    I asked politely for an answer to what is, in fact, a fairly simple question. It seems that you don't know the answer as you can only respond with an insult. I know that you know nothing...
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    Thanks again 4502.

    Thanks again 4502.
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