Search:

Type: Posts; User: icemeister

Page 1 of 20 1 2 3 4

Search: Search took 0.10 seconds.

  1. Replies
    56
    Views
    2,399

    Standard Sporlan TEVs are all hard shutoff valves...

    Standard Sporlan TEVs are all hard shutoff valves unless they were ordered with a permanent bleed port, are a RPB rapid balance type valve or are an OEM valve which includes one of these features.
    ...
  2. Replies
    56
    Views
    2,399

    Most all commercial refrigeration units already...

    Most all commercial refrigeration units already have a "start kit" in the form of at least a start cap and relay, but an AEV would require that too.

    On cap to TXV jobs I've done, if there wasn't...
  3. Replies
    5
    Views
    184

    I realize now I used the Tecumseh compressor...

    I realize now I used the Tecumseh compressor cross-reference application to get that AVA2490ZXT number...which is the cross-reference or equivalent for the Captain's compressor...which is likely an...
  4. Replies
    56
    Views
    2,399

    I had a C-Store with an old glass door, indoor...

    I had a C-Store with an old glass door, indoor ice merchandiser with an AEV. It had 1/2 HP Copeland R12 condensing unit with a receiver and it did run great.

    The trick is to set the AEV to the...
  5. Replies
    5
    Views
    184

    That's a Bill of Material (BOM) number. The full...

    That's a Bill of Material (BOM) number. The full number didn't come up so I ran it with just the main number, AH556RT. It's an AVA2490ZXT (200/230V-60Hz-3Ph) R404A LT 9400 Btuh @-10F and is listed...
  6. Thread: R-407A

    by icemeister
    Replies
    11
    Views
    755

    You need to use a better P/T chart that includes...

    You need to use a better P/T chart that includes all the bubble & dew point values. Or use a handy app like this one:

    http://www2.dupont.com/Refrigerants/en_US/uses_apps/PT_Calculator_app.html
    ...
  7. While we're on the topic of exploding gas...

    While we're on the topic of exploding gas cylinders, this is in my kitchen in Ecuador:


    565331

    It's a typical professional installation here.
  8. Replies
    3
    Views
    367

    Here's the specs for the A30-3582: ...

    Here's the specs for the A30-3582: http://www.uni-line.com/modules/catalog/Product.aspx?singlePart=false&prodID=332229

    It is in fact an air-sensing thermostat with a fixed differential of 8...
  9. Thread: R-407A

    by icemeister
    Replies
    11
    Views
    755

    This DuPont info will give you some good reading...

    This DuPont info will give you some good reading up on what JP is talking about here:

    http://www2.dupont.com/Refrigerants/en_US/assets/downloads/h45938_Suva_temp_glide.pdf
  10. Here in Ecuador, propane is used by just about...

    Here in Ecuador, propane is used by just about everyone for cooking and water heating and is generally sold in 20 lb tanks. These tanks are delivered to local distributors in large trucks like this...
  11. Thread: PTC issue

    by icemeister
    Replies
    26
    Views
    1,062

    The best way to determine if a compressor is...

    The best way to determine if a compressor is performing as it should is to use the manufacturer's performance data. This information can come in the form of plotted curves, tables or computer...
  12. Thread: PTC issue

    by icemeister
    Replies
    26
    Views
    1,062

    Save yourself a lot of trouble and grief. Order...

    Save yourself a lot of trouble and grief. Order the correct OEM (Tecumseh) replacement parts:


    563901
  13. Replies
    13
    Views
    1,419

    Dunham-Bush (D/B) was a significant player for...

    Dunham-Bush (D/B) was a significant player for many years in the refrigeration industry. I worked for them as an application engineer in West Hartford back in the early 1980's until shortly before...
  14. Replies
    10
    Views
    664

    I had similar bad experience with Grasslin...

    I had similar bad experience with Grasslin defrost timers, particularly with output relays failures. I had always preferred the Paragon 8000 Series clocks, but then they started making them in...
  15. Replies
    31
    Views
    1,817

    How do you suppose the EPA will ever enforce this...

    How do you suppose the EPA will ever enforce this rule?

    There will be a restriction on new self-contained units, but no restriction on the manufacture of the remote equipment component and there...
  16. Replies
    31
    Views
    1,817

    This is the EPA Fact Sheet which summarizes the...

    This is the EPA Fact Sheet which summarizes the proposed rule 40 CFR Part 82 concerning the "un-approval" of certain formerly SNAP approved refrigerants:
    ...
  17. Replies
    31
    Views
    1,817

    If you choose to go with anything other than R22...

    If you choose to go with anything other than R22 or anything that doesn't contain R22, remember that you must replace any elastomeric seals and schraeder valve cores or they will leak like all get...
  18. Replies
    17
    Views
    1,066

    Great pic! That looks like all is pretty much...

    Great pic! That looks like all is pretty much original too.

    Good testimonial for Kramer Thermobank.
  19. Replies
    10
    Views
    664

    The Grasslin has output relays where 1-3 is NO,...

    The Grasslin has output relays where 1-3 is NO, 1-F is NC and 2-4 is NC. They must be energized to function, so you need to have 120V or 240V between 1 & N.
    ...
  20. Replies
    98
    Views
    6,509

    Welcome back Bill.

    Welcome back Bill.
  21. Replies
    17
    Views
    1,066

    They're probably worm poop by now. I had to get...

    They're probably worm poop by now. I had to get rid of a lot of my papers, manuals and books for my big move south...or get a bigger shipping container. ;)
  22. Replies
    17
    Views
    1,066

    VTP... RAF Load =1600 Btuh/door @ -25 Deg F...

    VTP...

    RAF Load =1600 Btuh/door @ -25 Deg F evap temp

    http://icemeister.net/files/supermarket/Hussmann/BTU,%20Velocities,Case%20model%20%23s.pdf
  23. Replies
    17
    Views
    1,066

    My stuff always uploads. :angel:

    My stuff always uploads. :angel:
  24. Replies
    17
    Views
    1,066

    What it means is there is no "dedicated' hot gas...

    What it means is there is no "dedicated' hot gas line required because the system utilizes the liquid line as the hot gas line in the defrost mode. It's a variation on traditional two-pipe HG...
  25. Replies
    17
    Views
    1,066

    They're still available: ...

    They're still available:

    http://kramer.htpgusa.com/images/pdfs/km_ctt_1211a.pdf
  26. Replies
    6
    Views
    507

    The typical walk-in box wall skin is a fairly...

    The typical walk-in box wall skin is a fairly thin gauge, so as pecmsg said, don't strip your sheet metal screws trying to mount stuff. I had good luck using shallow unistrut channel with cushion...
  27. I have to vote for "it's not going to work" too. ...

    I have to vote for "it's not going to work" too. In 45 years I never saw anything in writing on it, although a few years ago a hotel customer bought a truckload of re-manufactured GE Zoneline PTAC...
  28. Replies
    11
    Views
    587

    The internals are interchangeable. You need to...

    The internals are interchangeable. You need to order a parts kit #KP02-0050 for for an SVE-10. (See p.19 and p.8):

    http://sporlanonline.com/literature/misc/122.pdf

    Looking at the service info...
  29. Replies
    20
    Views
    1,375

    Section 16-1 in the Copeland Refrigeration Manual...

    Section 16-1 in the Copeland Refrigeration Manual can be bit beyond most of us to understand right away, so I created a simpler balance point plot for that thread:

    ...
  30. Replies
    20
    Views
    1,375

    As BBeerme said, the TD is determined by the...

    As BBeerme said, the TD is determined by the equipment selection. More specifically, it's the result of all the system's components' capacity balance.

    You stated that the newer system seem to...
  31. Replies
    13
    Views
    1,253

    I rather like the Bally Thermosaver approach to...

    I rather like the Bally Thermosaver approach to HG defrosting almost as much as the old Thermobank systems. It has a lot of good features, although still somewhat invloved.
    ...
  32. Replies
    13
    Views
    1,253

    You say you have two 10 hp units, so I'm assuming...

    You say you have two 10 hp units, so I'm assuming we're looking at two single compressor systems that you are considering adding HG defrost to. Do they each have a single evaporator?

    The problem...
  33. Replies
    19
    Views
    1,518

    Analog gauges like the ones on your manifold set...

    Analog gauges like the ones on your manifold set can only measure in inches of vacuum. There are several problems with this when attempting a good vacuum in a refrigeration system.


    1 inch =...
  34. Replies
    14
    Views
    1,062

    In that case, as long as the existing systems are...

    In that case, as long as the existing systems are running OK with the R407A, just leave them be. To give an example, R404A is intended for low and medium temp applications but works fine for A/C. ...
  35. Replies
    14
    Views
    1,062

    Since R407A is designed to replace R404A or R507...

    Since R407A is designed to replace R404A or R507 in low and medium temperature applications and R407C is intended as a replacement for R22 in air conditioning applications, I'd say using R407C is the...
  36. Replies
    10
    Views
    431

    Here are a few Rule-of-Thumb guidelines you might...

    Here are a few Rule-of-Thumb guidelines you might use:

    One is the coil face velocity is typically about 500 ft/min for the best performance. Higher than that and you'll blow the condensate off...
  37. Replies
    17
    Views
    1,066

    There have been many threads discussing...

    There have been many threads discussing Thermobank systems. Do a basic search for "thermobank" and you'll find quite a lot of them.
  38. Replies
    30
    Views
    1,078

    From what the OP stated earlier about air water...

    From what the OP stated earlier about air water equipment, I suspect he's trying to design a system to extract potable water from the air, probably for a remote and humid climate with no reliable...
  39. Replies
    30
    Views
    1,078

    There are lots of others available for free...

    There are lots of others available for free download. Just Google "Cooling Coil Selection Software".

    This one looked interesting because they have one program for dehumidification coils:...
  40. Replies
    23
    Views
    903

    R134A is not a blend, it's a single component...

    R134A is not a blend, it's a single component refrigerant.
  41. Replies
    33
    Views
    2,229

    It looks like a Tecumseh HGA horizontal rotary...

    It looks like a Tecumseh HGA horizontal rotary compressor. I think they were first introduced about ten years ago or so. I can't get anything from the US website on them, but I know they're made...
  42. Replies
    23
    Views
    903

    If the unit has a CPR valve, it was likely set...

    If the unit has a CPR valve, it was likely set pretty low for the R12...like about 10-15 psig or so. That would have been a big help to keep the R404A from overloading.

    Some folks can step into a...
  43. Replies
    30
    Views
    1,078

    It appears to me that you're over-thinking this. ...

    It appears to me that you're over-thinking this. There are some very good coil selection programs available for free which will give you all the performance info you need for just about any coil. ...
  44. Replies
    23
    Views
    903

    If it's engine driven, try reducing the engine...

    If it's engine driven, try reducing the engine speed by about 1/3.
  45. Replies
    2
    Views
    346

    Autocascade systems are something I've never had...

    Autocascade systems are something I've never had the opportunity to work with, but I have had thoughts of tinker around with them just for "fun".

    I suppose if I were to start such a project I'd...
  46. Replies
    23
    Views
    891

    There was a discussion relating to this a while...

    There was a discussion relating to this a while back. RobY had some very good info on it:

    http://hvac-talk.com/vbb/showthread.php?113429-Reducing-waste-refrigerant-in-supply-tanks

    The link he...
  47. Replies
    12
    Views
    877

    I have seen three identical Alco Headmasters...

    I have seen three identical Alco Headmasters piped in parallel from the factory. It was done strictly due to cost.
  48. Replies
    28
    Views
    1,296

    I had a few condensers on pizza preps where the...

    I had a few condensers on pizza preps where the flour had gotten wet and the heat baked it hard and crusty. I found that a hacksaw blade could be worked in between the fins to break it up so it...
  49. Thread: subcooling

    by icemeister
    Replies
    35
    Views
    1,248

    I think your confusion is due to the statement...

    I think your confusion is due to the statement made at the Copeland seminar was likely referring to the increase in the "system's capacity" due to increased subcooling, whereas you're looking at it...
  50. I believe most all of the Coldtech/Ascend doors...

    I believe most all of the Coldtech/Ascend doors used a cartridge type spring return hinge like the Kason 1556-4:

    http://www.kasonind.com/files/9612/5907/6552/1556-2pg_order.1.pdf
Results 1 to 50 of 1000
Page 1 of 20 1 2 3 4

Related Forums

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