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Type: Posts; User: Thermodynamics

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  1. Replies
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    Your pressures look fine. Open face boxes tend to...

    Your pressures look fine. Open face boxes tend to cool down within a few minutes, and will cycle on and off more than a reach-in. Find out where the thermostat sensing bulb is located; is it in the...
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    *deleted*

    *deleted*
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    I recently had this same problem on a york rtu....

    I recently had this same problem on a york rtu. It boggled my mind for a while. The installers put the vent pipe before the trap. The negative pressure from the return wouldn't allow water to drain...
  4. Thread: york

    by Thermodynamics
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    We are the local york dealer around here, the 9...

    We are the local york dealer around here, the 9 blink lock out (high limit or roll out open) is pretty common on the yorks, especially the sunlines. If I remember correctly, yorks "answer" the...
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    I've had alot of luck leak testing with nitrogen...

    I've had alot of luck leak testing with nitrogen and a trace amount of r22. Maybe 4-6 oz. My leak detector loves r22!
  6. Replies
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    Mike19 is right on the money. Condenser fan...

    Mike19 is right on the money. Condenser fan control, just set your cut in and cut out points and you're good to go. See it alot in process cooling.
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    http://nclicensing.org For information on the...

    http://nclicensing.org

    For information on the technicians license check the recent newsletters (also listed on the website)
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    I agree, it's illegal and a liability. But...

    I agree, it's illegal and a liability.

    But let's say for the sake of argument you evacuate a system, it's not under high pressure anymore. So how much propane will be left in it? Would the flame...
  9. Replies
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    which technician brazes before recovery of...

    which technician brazes before recovery of refrigerant?
  10. Replies
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    I'm not trying to be a smart ass here, but how...

    I'm not trying to be a smart ass here, but how many homes have propane piped in 1/2 copper? I've come across many gas leaks before that were in a crawl space with a furnace or an attic with a furnace...
  11. The most accurate way is weighing it in. The...

    The most accurate way is weighing it in.

    The second most accurate is manufacture charging chart. But keep in mind that manufacture charging chart assumes the airflow is correct, coils are clean,...
  12. Love my d tek, hasn't let me down yet.

    Love my d tek, hasn't let me down yet.
  13. Hi chimchim. I was in your shoes not long ago. I...

    Hi chimchim. I was in your shoes not long ago. I learned that experience means alot to an employer and tech school just backs up your experience with theory.

    After I graduated HVAC/R tech school,...
  14. wood stove and window units

    wood stove and window units
  15. A service tech that has never heard of manual j...

    A service tech that has never heard of manual j or manual d.... hmmmmmm
  16. Replies
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    Damn ya'll. Give him a break, he knows the...

    Damn ya'll. Give him a break, he knows the sequence of operations and EVERYTHING!
  17. If I can correctly recall, they use blue as the...

    If I can correctly recall, they use blue as the reversing valve and brown as common also. Crazy ruud/rheems!
  18. Replies
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    I work in Durham

    I work in Durham
  19. $2400 :Faint: $15 x 40 x 4 = $2400 I...

    $2400 :Faint:

    $15 x 40 x 4 = $2400

    I couldn't imagine my entire salary going to just putting a roof over my head.

    Good luck on the new job.
  20. Replies
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    I very recently received a new job as a service...

    I very recently received a new job as a service tech (just finished my first week there). During the interview, the service manager grilled me on gas furnaces and heat pumps for an hour an a half....
  21. Replies
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    Oh man, I definitely didn't expect that... :)...

    Oh man, I definitely didn't expect that... :) :cheers:
  22. Replies
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    Dandyme, I applied for a PRO membership over a...

    Dandyme, I applied for a PRO membership over a week ago. Any idea how long it takes??

    Thanks!
  23. Sorry, right to work state. We don't talk union...

    Sorry, right to work state. We don't talk union around these parts.
  24. Replies
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    One sick photobucket account

    One sick photobucket account
  25. Congrats Joe is this a union job? The reason for...

    Congrats Joe is this a union job? The reason for asking is straight out of tech school I was offered $11/hr as an installers helper in a non-union state. Seems like you union guys have it pretty good!
  26. Replies
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    Riddle me this: Why is it that one can charge...

    Riddle me this:

    Why is it that one can charge a heat pump in cool mode, it runs fine all summer. Then come winter time, the system performs poorly, produces symptoms of overcharge, then performs...
  27. Replies
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    If you pull the burner assembly and rust falls...

    If you pull the burner assembly and rust falls everywhere, it's a good idea to check the HX.

    Now the real question.. How many of you will poke at the rust spots with your finger to see if it...
  28. Replies
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    The outdoor coil is much larger than indoor coil....

    The outdoor coil is much larger than indoor coil. In heat mode, the extra refrigerant required in cool mode has to be stored somewhere, and it's the accumulator.

    The accumulator also keeps liquid...
  29. Replies
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    Easiest charging method I've seen is the first...

    Easiest charging method I've seen is the first one you mentioned. Hot gas, 110F + OAT = Discharge temp. This will put you "in the ball park"

    Other people will say the only way to charge a heat...
  30. Replies
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    Delta T? Dirty air filters? Collapsed duct work?...

    Delta T? Dirty air filters? Collapsed duct work? Dirty Evap coil?

    I'm thinking airflow since the problem occurred after you changed blower motor and control board.

    How did you set your fan...
  31. Replies
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    We use this setup at work, without the manifold...

    We use this setup at work, without the manifold gauge. We have the manifold gauge, but don't use it. We just don't need it.

    Straight from Appion Tez8 using the larger 1/2" hoses and valve core...
  32. Replies
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    I use an Appion TEZ8 vacuum pump, makes for very...

    I use an Appion TEZ8 vacuum pump, makes for very easy changes. I carry 3 containers of fresh synthetic vacuum oil each time I need the pump. Sometimes I change the oil during evacuation if its...
  33. Replies
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    1,680

    Want to kill airflow? Pull the fan common wire...

    Want to kill airflow? Pull the fan common wire from the contactor.
  34. I'm going to theorize about what would happen in...

    I'm going to theorize about what would happen in this system.

    Let's say his pressures were right for the system, but it was mixed with nitrogen/r22 refrigerant:

    1. The compressor would pump a...
  35. I was really cornfused as to why you were doing...

    I was really cornfused as to why you were doing an AC start up in January, but being in FL explains alot :) If you forgot to open the service valves, wouldn't the unit be bouncing off the HPS? If the...
  36. We don't have any unions here, so the term...

    We don't have any unions here, so the term journeyman doesn't mean much. An experienced lead commercial technician could expect 20-25+/hr.

    Industrial seems to do well, hospitals, laboratories,...
  37. I work in the Raleigh area. Here you will find...

    I work in the Raleigh area. Here you will find the busiest companies, most wealthy customer base, and highest wages in the state. Hell, I drive from 45 minutes to work everyday simply because the pay...
  38. Replies
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    I recently went to a Copeland compressor class...

    I recently went to a Copeland compressor class and the instructor said 22 and poe will mix, just be sure to blow the old oil out of the evaporator coil and put on a new drier.
  39. Replies
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    The temperature sensors have an ohm reading...

    The temperature sensors have an ohm reading related to the temp being read. Your trane service manual will have a table to follow for these measurements. Just something worth checking out.
  40. Replies
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    I bought a set of NRP RM460's (National...

    I bought a set of NRP RM460's (National Refrigeration Product) - Manager at the supply house told me they are yellowjackets with a different sticker on 'em. I paid $77, for 410a, 22, 404a

    NRP also...
  41. Replies
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    Whats up fellas!

    Hey everyone, just wanted to introduce myself to the forum. I graduated tech school last year and have been working in the field ever since. Pretty good trade and its been easy to find work.

    Also...
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    A bachelors in HVAC -wow. Impressive work.

    A bachelors in HVAC -wow. Impressive work.
  43. Replies
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    Don't mean to be a smart ass but my gauges have a...

    Don't mean to be a smart ass but my gauges have a pt chart on em
  44. Replies
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    3,093

    I use the porter cable 12v lithium for service...

    I use the porter cable 12v lithium for service and porter cable 18v lithium (I bought the 18v combo, drill, sawzall, circular and flashlight) for installs.

    If I have to grab one real quick, its...
  45. Replies
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    Hell looking like drive from my phone =/

    Hell looking like drive from my phone =/
  46. Replies
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    LOL the handle made out of drive is the best part...

    LOL the handle made out of drive is the best part =)
  47. Replies
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    'Round here they make us tack the whips down...

    'Round here they make us tack the whips down within 12" of disconnect. Low voltage wires gets a flexible whip also.
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