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  1. Replies
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    318

    Also, more work means more money. You cant do...

    Also, more work means more money.

    You cant do the PITA job for the same money as the wide open warehouse type setting with the spiral.


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  2. Replies
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    318

    I like the idea of adding access points where...

    I like the idea of adding access points where they will make your job easier. Or remove sections of the drop ceiling and run the duct there.

    Are you planning on having the units located near the...
  3. If I did residential, I could see wearing those. ...

    If I did residential, I could see wearing those.


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  4. Thread: Gauges!

    by heatingman
    Replies
    20
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    718

    I have the Testo 550 set up, 2 of them actually....

    I have the Testo 550 set up, 2 of them actually. I hang them the same way I hang my analogs.

    I mainly went with Testo for the small form factor, everything else on the market for a manifold set up...
  5. Replies
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    If the only radiation is fin tube, then you can...

    If the only radiation is fin tube, then you can certainly upgrade that. Myson, buderus and a few others make stamped steel wall hung radiators that can provide alot of surface area in a small space....
  6. Replies
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    A water source heat pump with a water loop can be...

    A water source heat pump with a water loop can be made to work, but you will need to at least double the amount of existing radiation surface, that will allow for much lower temperature water.

    By...
  7. Thread: VRF system

    by heatingman
    Replies
    9
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    359

    Did all of the air handlers pipe to the branch...

    Did all of the air handlers pipe to the branch box, or was one of them piped differently, like tapped directly to the main from a refnet or whatever they call them?


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  8. Cagey is right Cv value is the number of gpm...

    Cagey is right

    Cv value is the number of gpm required to have a 1 psi drop across the valve, or coil, etc..

    Its useful to know, because it can be used to calculate current gpm from a current...
  9. Replies
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    6,896

    What type of work will you be doing? ...

    What type of work will you be doing?

    Commercial, residential, mainly service, mainly retrofit, or construction?




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  10. I wouldn’t. Sent from my iPhone using...

    I wouldn’t.


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  11. We use water in high rises. Modern ones are...

    We use water in high rises. Modern ones are mostly watersource heat pumps. Older ones are chilled water and hot water.

    Really old ones are steam, or steam with steam to water heat exchangers. Most...
  12. It ran fine, after I relocated one of the ports...

    It ran fine, after I relocated one of the ports to the return. Had to remove a thermal well to make that happen without welding in a fresh tap.

    Had the controls vendor open everything up, and...
  13. Where to Put The DP Sensor in Constant Volume Systems

    Ive seen some really stupid locations over the years for DP sensors. My favorite was at an office building. Both ends where landed on then same pipe, 6 lineal ft from the other. The main header went...
  14. You mean like a domestic pressure booster? ...

    You mean like a domestic pressure booster?

    Then right on the outlet of the pump station.


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  15. I would think its all relative. Put it...

    I would think its all relative.

    Put it anywhere in a strait segment of pipe that is accessible for future service.

    Then take field measurements to use as a benchmark of performance or...
  16. The cavitation is not continuous. More cyclical....

    The cavitation is not continuous. More cyclical. Fluid, then fluid vapor mix, then fluid and so on. Which will cause flow rate to rise and fall with the cycles.


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  17. Replies
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    403

    Is the probe on the boiler, or on the column. ...

    Is the probe on the boiler, or on the column.


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  18. Thread: Ultra80

    by heatingman
    Replies
    11
    Views
    559

    Also dont they light off at the same firing rate...

    Also dont they light off at the same firing rate regardless, then modulate to whatever after that?


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  19. Thread: Ultra80

    by heatingman
    Replies
    11
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    559

    Did you clean the HX while you had it open? ...

    Did you clean the HX while you had it open?


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  20. Replies
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    785

    I think you nailed it. I never knew that was a...

    I think you nailed it.

    I never knew that was a thing.


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  21. Replies
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    785

    Its got to be a relief of some kind, otherwise it...

    Its got to be a relief of some kind, otherwise it would be dumping water.



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  22. Replies
    17
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    755

    Ive made tips work for my large smith set up by...

    Ive made tips work for my large smith set up by getting a specialty tip, and grafting it onto a fitting that works for my set.

    Waste a tip doing so, but it works.


    Sent from my iPhone using...
  23. Replies
    23
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    856

    Sort of. The heat will continue as long as the...

    Sort of. The heat will continue as long as the steam entering the radiator condenses into water. The condensing of steam to water creates a vacuum, but hardly measurable initially. Just enough to be...
  24. Replies
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    755

    No, only torch that works with the capt. hook is...

    No, only torch that works with the capt. hook is works with is uniweld as far as I know.

    The quick braze kit has its own circular style tips.


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  25. Replies
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    856

    All radiator vents will act as a vacuum breaker. ...

    All radiator vents will act as a vacuum breaker.


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  26. Replies
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    595

    Right, but is it the same compressor? On the same...

    Right, but is it the same compressor? On the same rack?


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  27. Replies
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    595

    Is this the same compressor with the loss of oil...

    Is this the same compressor with the loss of oil failures?


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  28. Replies
    51
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    1,616

    Also, in and out of the Compression tank. And...

    Also, in and out of the Compression tank.

    And all gravity systems, and those with no running pumps and missing flow controls.


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  29. Replies
    51
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    1,616

    Water falls, rain, and downfeed risers Maybe...

    Water falls, rain, and downfeed risers

    Maybe Domestic fixtures post aerator.


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  30. Replies
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    Depends on the application. If you talking...

    Depends on the application.

    If you talking direct vent like a 90 percent furnace, just use a concentric vent kit. Only one flashing for both intake and exhaust.


    Sent from my iPhone using...
  31. Trane Reliatel Economizer Controller MOD02618 - not operating properly

    If your on Tracer, then I think that overrides the normal onboard ECON logic.

    If tracer shows 0 percent, go to the mod motor, and check voltages.

    I believe they use 24v to operate may be power...
  32. Replies
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    856

    My bad. Sent from my iPhone using Tapatalk

    My bad.


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  33. Snoop is what they use at all the refineries. ...

    Snoop is what they use at all the refineries.

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  34. Replies
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    In Texas I would see them installed on RTU’s. ...

    In Texas I would see them installed on RTU’s.

    Weather it was allowed or not, it really looked like a hack job.

    My opinion, anything thats not intended to be moved for service should be hard...
  35. Replies
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    I have this set, and a full size smith set also....

    I have this set, and a full size smith set also. I really like this quick braze set. It does 90 percent of what I need it to do. Anything bigger then around 1 5/8 I use the full size rig.


    Sent...
  36. Are the compressors piped in Tandem, or truly...

    Are the compressors piped in Tandem, or truly separate circuits?


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  37. Replies
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    856

    Im not sure? Do you have a more pointed question?...

    Im not sure? Do you have a more pointed question?


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  38. Replies
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    856

    What do you mean? What are you missing? Sent...

    What do you mean? What are you missing?


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  39. How many compressors on the rack? Is there a...

    How many compressors on the rack?

    Is there a secondary oil separator for the common rack?


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  40. Replies
    21
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    1,606

    I like the Greenlee version. They are stainless...

    I like the Greenlee version. They are stainless and last alot longer.

    These:
    https://uploads.tapatalk-cdn.com/20191223/624d47c57b48c112d2c31302c3b30e11.jpg



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  41. Replies
    20
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    1,088

    Im not saying its a bad meter. Sent from my...

    Im not saying its a bad meter.


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  42. That number is for oil. Sent from my...

    That number is for oil.




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  43. Replies
    23
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    856

    This is what you want for 1 pipe steam ...

    This is what you want for 1 pipe steam

    https://assets.danfoss.com/documents/DOC200586466852/DOC200586466852.pdf



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  44. Replies
    23
    Views
    856

    This is correct. If there is only one pipe to the...

    This is correct. If there is only one pipe to the radiator, the the radiator can not have this type of zone valve. It will lead to flooding of the radiator, then subsequent hammering when it does...
  45. Does California have some sort of duct leakage...

    Does California have some sort of duct leakage standard that applies to retrofit applications? If so maybe duct sealing can work (never done it)

    Either way, there will be no single one system...
  46. Replies
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    1,123

    Makes logical sense. I would have learned the...

    Makes logical sense.

    I would have learned the hard way like you did.


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  47. Replies
    17
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    1,077

    Is the gurgling like pipe movement? Or something...

    Is the gurgling like pipe movement? Or something coming from the coil thats off?


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  48. Replies
    20
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    1,088

    Thats a cool little meter. If it did uA, it...

    Thats a cool little meter. If it did uA, it almost be the perfect meter.


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  49. Replies
    44
    Views
    2,325

    Safety training absolves a company from almost...

    Safety training absolves a company from almost nothing. You have to prove negligence.

    Regardless Im not talking about abuse of tools. You have someone coming to you alot for tools that broke,...
  50. Replies
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    2,325

    Buying tools

    Thats no different then a person taking a fall on a job. Clumsiness or not, the company should be paying for it.




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