Search:

Type: Posts; User: timjimbob

Page 1 of 20 1 2 3 4

Search: Search took 0.03 seconds.

  1. Replies
    10
    Views
    183

    Expect to pay a few hundreds of dollars. It is...

    Expect to pay a few hundreds of dollars. It is pretty labor intensive on an already built house. There are companies that is all they do.
    You may not realize that every window and door needs to be...
  2. Thread: subcooling

    by timjimbob
    Replies
    35
    Views
    665

    So, are you saying higher subcooling DOES NOT...

    So, are you saying higher subcooling DOES NOT increase efficiency?
  3. Thread: subcooling

    by timjimbob
    Replies
    35
    Views
    665

    I am having a hard time uinderstanding why high...

    I am having a hard time uinderstanding why high subcooling adds to efficiency. I appreciate the explanations, but I just can't get this.
  4. Thread: subcooling

    by timjimbob
    Replies
    35
    Views
    665

    just a theororist

    just a theororist
  5. Thread: subcooling

    by timjimbob
    Replies
    35
    Views
    665

    I am incorrect

    I am incorrect
  6. Thread: subcooling

    by timjimbob
    Replies
    35
    Views
    665

    You also have zero superheat too. let say .001...

    You also have zero superheat too. let say .001 degree of subcooling
  7. Thread: subcooling

    by timjimbob
    Replies
    35
    Views
    665

    you say ".......you are undercharged" No, you...

    you say ".......you are undercharged" No, you are perfectly charged in a perfect world. You add positive superheat as a margin of safety, to insure there is no flashing going on.

    Do you see this...
  8. Thread: subcooling

    by timjimbob
    Replies
    35
    Views
    665

    If you have zero subcooling, that means no...

    If you have zero subcooling, that means no flashing.. Any flashing in the evap is what you want. Any flashing before the TXV would then be some superheat.
  9. Replies
    21
    Views
    515

    I realize you are talking about cooling. I...

    I realize you are talking about cooling. I apologize fot the critique
  10. Thread: subcooling

    by timjimbob
    Replies
    35
    Views
    665

    subcooling

    I attended a copeland seminar and puzzled by the statement that a higher subcooled liquid has more capacity then 10 degree subcooling liquid.

    I realize that heat is absorbed more readily when...
  11. Replies
    21
    Views
    515

    Only run HP if temperature is above 60?!!! You...

    Only run HP if temperature is above 60?!!!

    You need solid data and an understanding about heatpumps.

    I have plenty of buildings that do not have suplemental strip heat at all and are heated all...
  12. Replies
    7
    Views
    301

    Just to be sure and not screw up someone elses...

    Just to be sure and not screw up someone elses recovered 50 lb jug of R22, they are not the same. Just similiar characterisics. NEVER MIX REFRIGERANTS
  13. Thread: Hot loop

    by timjimbob
    Replies
    8
    Views
    263

    I had that happen with a couple of chillers and...

    I had that happen with a couple of chillers and 300,000 sq foot high rise. Rupture discs blew the charge of all the chillers. Not a quick fix. Pump motor watts is converted to heat.
  14. Thread: Why Now?

    by timjimbob
    Replies
    16
    Views
    702

    Which high limit? Could be change in the flue. ...

    Which high limit? Could be change in the flue. could be bad heat exchanger
  15. I use a chart record. Hard copy Shows when and...

    I use a chart record. Hard copy Shows when and what temperature. This is not remote, though.
  16. yes, I had a situation where the inside...

    yes, I had a situation where the inside temperature was kept in the low 60s. The available sensible heat was determioned not be enough to clear the outside coil before unit shifted out of defrost.
  17. Replies
    16
    Views
    795

    I'll try accummulator wrap. Easiest to do now.

    I'll try accummulator wrap. Easiest to do now.
  18. Replies
    10
    Views
    335

    Charles, you have checked many items that have no...

    Charles, you have checked many items that have no connection with blown control fuses. Are you sure you know what you are doing?
  19. Replies
    10
    Views
    335

    You can guess or fuse all loads with 1 amp fuses....

    You can guess or fuse all loads with 1 amp fuses. Too many choices
  20. Replies
    16
    Views
    795

    SH is at compressor. Very short distance from...

    SH is at compressor. Very short distance from evap to comp.= 4-5 feet.

    since cap tube is burried in foam insulation, I can't tell if cap wraps around suction, but I will check at CU location. My...
  21. Replies
    16
    Views
    795

    cap tube location matter

    I am having a problemwith a True freezer and slow recovering temp. running about 5 degrees warmer, in the day, then I'd like. 20 degree SH.

    I changed the cap tube with an equivelent sized cap...
  22. The number on WRoger stat is probably the series...

    The number on WRoger stat is probably the series line. The exact madel no. is on the inside. You would be quite supprised as to the long no. and all the variations there are.

    Most likely, if...
  23. Thread: dry cold air

    by timjimbob
    Replies
    6
    Views
    412

    dry cold air

    I read that the supply air, at outlet to evap, is 100% saturated. I always thought that the air at that point was very dry. The fact that the evap was producing condensate.

    I haven't looked at the...
  24. Finding a home depot thermostat with reset...

    Finding a home depot thermostat with reset button will be impossible. I have never seen a reset button on a stsat.


    replacing a stat on a heatpump is not a home owner job. You must understand...
  25. Replies
    36
    Views
    1,250

    Need to keep a sawzall on the truck

    Need to keep a sawzall on the truck
  26. Replies
    36
    Views
    1,250

    I wonder about the mentality of Trane engineers...

    I wonder about the mentality of Trane engineers that have the CU plastic bottom pans secured to the pallets. You need a wood chisel to cut theese loose. I already have a problem with three...
  27. Replies
    27
    Views
    1,416

    I wish the Copeland "old fart" would read ...

    I wish the Copeland "old fart" would read "Copeland Air Conditioning Training Manual

    Application Engineering Bulletin AE-1301, and AE 1316. Two different opinions.
  28. Replies
    12
    Views
    880

    Good idea. I do radio tower ac repair. I've...

    Good idea.

    I do radio tower ac repair. I've flung lit torches when the energy sporadically shocks you. Why do you thing they ground barbwire fences.
  29. Replies
    39
    Views
    1,376

    Has this furnace worked for year last winter?

    Has this furnace worked for year last winter?
  30. Replies
    19
    Views
    1,461

    rest assured, I have done dozens of multistory...

    rest assured, I have done dozens of multistory upgrades to HP 410a changeouts. 1-1/8" suction with traps on three ton systems. Surely, mineral oil is left behind. Had only one refrigerant related...
  31. Replies
    6
    Views
    644

    Trane had backorder on blower motor last year. 6...

    Trane had backorder on blower motor last year. 6 year old. last winter, no heat for six weeks. i'm not Trane dealer. I sell the competive.

    My supplier will order similiar equipment and let me...
  32. This is a garage. Trying to convince inspector...

    This is a garage. Trying to convince inspector that it is going to be a cave to get the OK to run AC in the cave. Lets look at all that will be required for a man cave, First, it now is a living...
  33. Replies
    9
    Views
    374

    Wouldn't think so. How about model #. Check G to...

    Wouldn't think so. How about model #. Check G to 24 vac at stat. Work?
  34. i can't agree about Minisplits in a garage. Too...

    i can't agree about Minisplits in a garage. Too expensive, too hard to clean, too dusty. Most garages are work shops.
  35. Replies
    27
    Views
    1,416

    Copeland Air Conditioning Training Manual ...

    Copeland Air Conditioning Training Manual

    Application Engineering Bulletin AE-1301, and AE 1316 says pump down "may be used instead of, or in cojunction with"
  36. Replies
    27
    Views
    1,416

    Copeland Air Conditioning Training Manual for...

    Copeland Air Conditioning Training Manual for ZR90K3 etc etc. Scroll Compressor states otherwise!
  37. Tenant had to move out because of the shocking...

    Tenant had to move out because of the shocking shower head. The water pipe was not grounding well at all.
  38. Replies
    27
    Views
    1,416

    I sited "Modern Refrigeration and AC" chapter on...

    I sited "Modern Refrigeration and AC" chapter on compressors. It says "ALL".

    I think this is a dangerious statement considering many manufactures do not incude heaters on there AC equipment and...
  39. Replies
    27
    Views
    1,416

    I have taken this item from "modern Refrigeration...

    I have taken this item from "modern Refrigeration and AC" text book, Chapter is compressors. Many students will be misled by the "ALL" statement in the textrbook. This may be on there classwork...
  40. Replies
    27
    Views
    1,416

    How about ac compressors? Is there argument...

    How about ac compressors? Is there argument here? Using AC if compressor is below room temperature is not forbidden, is it?
  41. Replies
    27
    Views
    1,416

    I agree, But a pump down circuit will void the...

    I agree, But a pump down circuit will void the crankcase of refrigerant.
  42. Take a look at powrr pole and neutral, or let...

    Take a look at powrr pole and neutral, or let power company check.

    I had an old house that was getting all sorts of strange voltage to groung reading. Added more ground rods, grounded 50' copper,...
  43. Replies
    27
    Views
    1,416

    No crankcase heater

    I am in discussion about a textbook that states "ALL compressors operating lower then evap temp require crankcase haeters"

    I have often seen a pump down circuit used to protect against slugging...
  44. Replies
    6
    Views
    668

    Freezer compressors depend on a specific amount...

    Freezer compressors depend on a specific amount of suction pressure to keep from overloading. A freezer has a lower temperature therefor runs at a lower pressure to keep from overloading the...
  45. Replies
    72
    Views
    2,929

    I have reused furnaces from same customer. You...

    I have reused furnaces from same customer. You must be able to show them that it was working before the swap.

    Much different if you are providing the used furnace.
  46. Replies
    28
    Views
    1,569

    "ECM's draw the required power to maintain rpm's....

    "ECM's draw the required power to maintain rpm's. Higher or lower depending on static. "
    How does it know static?
  47. Replies
    12
    Views
    693

    I always heat up new made flares to relieve...

    I always heat up new made flares to relieve stresses in the flare before torqueing it
  48. Get unit model # and serial #and call Trane. I...

    Get unit model # and serial #and call Trane.

    I am thinking that this may be a 240 VAC heater, using a drop down transformer. Trane has a weird way of doing CCHs.
  49. Replies
    6
    Views
    575

    defrost timer usuually not on a cooler. Does...

    defrost timer usuually not on a cooler.

    Does the box light work?
  50. Replies
    3
    Views
    564

    I'm guessing economizer.

    I'm guessing economizer.
Results 1 to 50 of 1000
Page 1 of 20 1 2 3 4
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event