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Type: Posts; User: icy78

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  1. Replies
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    LOL! Sent from my SM-G950U using Tapatalk

    LOL!

    Sent from my SM-G950U using Tapatalk
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    [emoji106]What will you be learning? Sent from...

    [emoji106]What will you be learning?

    Sent from my SM-G950U using Tapatalk
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    Did you try switching the pumps or is that not...

    Did you try switching the pumps or is that not feasible here?

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    Switch the pumps. What happens? Does it follow...

    Switch the pumps. What happens? Does it follow the questionable pump?

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  5. Thread: Trane aud issue

    by icy78
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    Trane will refer you to your local service...

    Trane will refer you to your local service provider.

    Sent from my SM-G950U using Tapatalk
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    Curious...where is this cavitation possibly...

    Curious...where is this cavitation possibly happening? In the coil after the 2-way? Flashing from the sudden pressure drop?

    How does vena contracta function in a small pipe?

    What is 'recovery...
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    225 is too close. That's 300 at the valve. Oil...

    225 is too close. That's 300 at the valve. Oil cooking territory.
    I dont like over 200 either. VERY rarely do I leave something running at over 200f DLT.
    Rarely do I see over 195 on the stuff I...
  8. That's a tiny MUA. Probably everyone was...

    That's a tiny MUA.
    Probably everyone was thinking at least 6-12000 cfm.
    Also, are you sure it doesnt use some return air?
    Altho 1500 18 is only about 80cfm per apartment, so it's probably sized...
  9. IMO, you need a good tech, who can also think...

    IMO, you need a good tech, who can also think like a mechanical engineer.
    Or a good mechanical engineer, who has a tech who can make the ME's design work properly.

    Sent from my SM-G950U using...
  10. It needs to be looked at by someone who can "see"...

    It needs to be looked at by someone who can "see" the whole building picture. Mechanical as well.
    Small MUA savings realized by lower MUA cfm and temperature may become big building $ losses in a...
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    Haha! Maybe I ment , Coogs, has tons of info....

    Haha! Maybe I ment , Coogs, has tons of info.
    Thanks[emoji3][emoji106]

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    Googs has tons of info too. John Tomczak can...

    Googs has tons of info too.
    John Tomczak can explain it well.
    You should know about it and measure it. IMO.


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    That thing is probably 2 stage? It might be under...

    That thing is probably 2 stage? It might be under fired and causing condensation and rust.

    Or the return air is too cold or too much outside air making the return are too cold. Or it's a...
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    Back drafts can happen sometime/anytime, during...

    Back drafts can happen sometime/anytime, during the 99.99999% that you're not standing there.

    The nature of drafthoods/draft, dictates that.

    Lazer thermometers are only as accurate as the...
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    A guy I sort of know went. 2 days, hands on, 1...

    A guy I sort of know went. 2 days, hands on, 1 day of intelligen. (About 6 hours he said.)
    I've done 1 Intelligen system. Pretty nice.
    He said you learn some really handy tricks you may not know...
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    How was the downdraft issue corrected? Sent...

    How was the downdraft issue corrected?

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  17. Replies
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    Heatcraft intelligen

    Anybody here take the Heatcraft 2 day class on QRC/BEACON/INTELLIGEN?

    Is the test after only on Intelligen, or Beacon and QRC also?

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    What rundawg said. Sent from my SM-G950U using...

    What rundawg said.

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    Great points! Also, were all other appliances...

    Great points!

    Also, were all other appliances gas valves off at clocking time?

    And, it's hard to be accurate with single point readings.

    Sent from my SM-G950U using Tapatalk
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    You should try getting a reading at the first...

    You should try getting a reading at the first grille. Or after a few duct turns. Mix the air a bit.

    Sorry kdean1, we posted at the same time. I agree, do the things that you said.

    Sent from my...
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    I don't think they go bad without being subjected...

    I don't think they go bad without being subjected to abnormally high heat though. It may not be enough to trip it for a few years but enough to weaken it.
    So there would still be an underlying...
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    I'm betting on a flowcheck issue. Have a look...

    I'm betting on a flowcheck issue.
    Have a look inside it.

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    Tons of iron and manganese. Boiler no like. ...

    Tons of iron and manganese.
    Boiler no like.

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    Possible Burner misalignment. Sent from my...

    Possible Burner misalignment.

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    ^^^^ X2, sounds like you're doing a board...

    ^^^^
    X2, sounds like you're doing a board reset.
    Run the cooling and look for issues.

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    That's no fun Terry! Getting New tools IS...

    That's no fun Terry!
    Getting New tools IS fun![emoji846]

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    When it shuts off is it also shutting some type...

    When it shuts off is it also shutting some type of solenoid on the glycol or Water.... whatever is in the floor, and is that what's causing a noise?

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    What is the application? What Chiller is it? It's...

    What is the application? What Chiller is it? It's possible that there are numerous settings to change.
    And as pecmsg said, it may be operating far outside its design.

    Sent from my SM-G950U using...
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    Give it a few years PHM. There will be a list...

    Give it a few years PHM. There will be a list like that for Trump. (like there is for every president).

    They all have to play the same game , they all have to bow to the same lords ,and some of...
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    Turns out it's not quite linear. But very close....

    Turns out it's not quite linear. But very close. Using slip percentage of motor. About 2.2% for 1800rpm motor with 1760rpm label.
    40 1800 =2.2%
    30 hz =50% of 60hz =17602=880
    880- 2.2%=861

    So...
  31. Thread: Fun

    by icy78
    Replies
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    If your customers are artists, they probably have...

    If your customers are artists, they probably have shows around your furnace and hydronic work!
    It's a beautiful thing!

    Sent from my SM-G950U using Tapatalk
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    Ah interesting. Can you explain? It's not...

    Ah interesting. Can you explain?
    It's not linear, or is it?
    30hz is rpm of 60?

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    Bluetooth tach with a homemade bracket . clamp...

    Bluetooth tach with a homemade bracket .
    clamp it on close the door take your reading.

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  34. Thread: Mixing of oils.

    by icy78
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    1,040

    Just did an 06E from 22 to 407C. Carlisle wants ...

    Just did an 06E from 22 to 407C.
    Carlisle wants 30% POE.
    RTU 50ton. Theres only mineral oil in there right now. Returning like a champ. But, I disabled it now till next spring. Want to watch it...
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    Hmmm. Good point. But if the unit stages the...

    Hmmm. Good point.

    But if the unit stages the compressors/unloaded to meet supply air STPT too aggressively...itll still be too low cfm.

    Dont know if its done in Carrier algorithm or BAS .
    ...
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    Yes, I calibrated the static sensor but ended up...

    Yes, I calibrated the static sensor but ended up with a new one. It at least worked, but still off by 0.4".
    Found in config that someone selected 0-3 " sensor range. But these are 0-5". Changed that...
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    Thanks pagey! I mis-remembered...

    Thanks pagey!
    I mis-remembered again[emoji53][emoji846]

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  38. Thread: Simple 80%er

    by icy78
    Replies
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    1,180

    What draft did you measure? What were the...

    What draft did you measure?
    What were the combustion numbers?
    Sent from my SM-G950U using Tapatalk
  39. Replies
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    Googler.....flexible poolroom/natatorium ducting...

    Googler.....flexible poolroom/natatorium ducting

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  40. Thread: Simple 80%er

    by icy78
    Replies
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    1,180

    Looks good. I'm wondering if there may be some...

    Looks good. I'm wondering if there may be some draft issues there tho.

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  41. Thread: -20 f freezer

    by icy78
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    466

    Probably need 5" walls? You could add a layer of...

    Probably need 5" walls?
    You could add a layer of well sealed blueboard maybe.
    Other than that you just need to pick a condensing unit to match your load at -30 SST.
    It'll need an oil seperator.
    ...
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    I guess I didn't explain it right. I was checking...

    I guess I didn't explain it right. I was checking the calibration of the static pressure sensor and I found that it was reading anywhere from 1.6 to 2 in of static . Whereas my probe with two...
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    Wayne, while you're on here, I think you said on...

    Wayne, while you're on here, I think you said on another thread that even if a motor is outside of the heated or cooled space, (say it has a long shaft and is driving a fan inside the box) , that...
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    He he, good catch! Sent from my SM-G950U using...

    He he, good catch!

    Sent from my SM-G950U using Tapatalk
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    At the end of an hour the motor will have...

    At the end of an hour the motor will have absorbed a lot of the heat that the light bulb would have given up freely. So it would take considerably longer for the motor heat to dissipate out into the...
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    All the answers given all point to the same...

    All the answers given all point to the same thing. Nuclrchillers answer puts it in a nutshell but basically energy in equals energy out.
    So 1000 watts into a metal halide bulb is equal to 1000...
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    Can unload to 16%, (out of 2 pumps) The VAVs...

    Can unload to 16%, (out of 2 pumps)

    The VAVs have hydronic reheat coils.

    You know, by fixing the SP sensor, (only 20ft from the unit)
    I'll create another problem. Theres a 10" box feeding 5...
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    Yes they subcool. 72 cool and 68 heat. If a box...

    Yes they subcool. 72 cool and 68 heat. If a box satisfy, the damper drives to an unknown minimum, and continues to dump 53-60f air in the space. Controlled from return air and number of calls,...
  49. Thread: Rollout limit

    by icy78
    Replies
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    386

    I've got a couple suggestions but it cant be in...

    I've got a couple suggestions but it cant be in this forum. Can you post in the pro forums?

    Sent from my SM-G950U using Tapatalk
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    I probably should not Venture into this stuff but...

    I probably should not Venture into this stuff but I'm going to anyhow LOL. I guess my first thought is that the temperature of the metal halide bulb is much higher than the temperature of the motor...
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