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  1. AOP Sent from my SM-G950U using Tapatalk

    AOP

    Sent from my SM-G950U using Tapatalk
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    Are your guage valves closed? The factory is...

    Are your guage valves closed?

    The factory is not on site. They have to take your word for it that the wires and voltages are correct.
    So in that respect, the factory could be "wrong" too.
    A long...
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    Me tinks de corona vire ees no right! Better to...

    Me tinks de corona vire ees no right! Better to chec eet!

    Sent from my SM-G950U using Tapatalk
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    Did they leave a report? Can we see it? Sent...

    Did they leave a report? Can we see it?

    Sent from my SM-G950U using Tapatalk
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    Did either do a combustion analysis? Get them...

    Did either do a combustion analysis?
    Get them out first thing a.m. to do the above. Leave it off for tonight

    Sent from my SM-G950U using Tapatalk
  6. Thread: Bates work boots

    by icy78
    Replies
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    463

    I've worn Keen for 4 years now. We have to buy a...

    I've worn Keen for 4 years now. We have to buy a new pair every year. Very comfortable, rubber capped ,steel toe. I do wear custom orthopedics insoles however so that probably scews the comfort...
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    Can reccomend one or two of those apps Tom? Be...

    Can reccomend one or two of those apps Tom? Be fun to try it.

    Sent from my SM-G950U using Tapatalk
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    Can you reccomend one or two Tom? Sent from my...

    Can you reccomend one or two Tom?

    Sent from my SM-G950U using Tapatalk
  9. Thread: Bates work boots

    by icy78
    Replies
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    463

    2 guys at our shop wear those. They really like...

    2 guys at our shop wear those.
    They really like em except for the lack of arch support, as in none.
    They said a day on the ladder is killer on the feet.
    Prob needs a steel, or similar shank.
    ...
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    Everybody argues about setbacks. Heat pumps are...

    Everybody argues about setbacks.
    Heat pumps are no brainers.
    The more efficient your heating equipment the less you're going to save using setback.
    And along the same lines, the more efficient the...
  11. Ding ding ding ding ding ding ding! We have a...

    Ding ding ding ding ding ding ding! We have a winner methinks :-)
    Do if the gauge is accurate, that would put the crankcase pressure around zero or the pump is bypassing too early?

    Sent from my...
  12. What is the suction pressure doing at the same...

    What is the suction pressure doing at the same time?
    What is the superheat? Did you try a different gauge?

    Sent from my SM-G950U using Tapatalk
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    I'm thinking you'll have to access it because it...

    I'm thinking you'll have to access it because it may be split in multiple places.

    Sent from my SM-G950U using Tapatalk
  14. 2 500s? Good time to check sizing and see what...

    2 500s?
    Good time to check sizing and see what it really needs.

    Sent from my SM-G950U using Tapatalk
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    Mechanically ok? 72 sounds resonable.... Get...

    Mechanically ok?
    72 sounds resonable....

    Get submittal data for decibel rating. See how close it is.
    Not sure how accurate a phone app is.....

    Emerson has Sound Shells for scrolls and semis....
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    Make sure the controller spring contacts are nice...

    Make sure the controller spring contacts are nice and clean and also their mating surfaces.

    Sent from my SM-G950U using Tapatalk
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    Cool pic! Merry Christmas[emoji106] Sent from...

    Cool pic!
    Merry Christmas[emoji106]

    Sent from my SM-G950U using Tapatalk
  18. Replies
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    To the OP. Assuming input is correct, the static...

    To the OP. Assuming input is correct, the static pressure readings are accurate and the delta-t is accurate, then regardless of what the unit claims it's moving CFM wise, it appears to be low air...
  19. Thread: Reverse Return

    by icy78
    Replies
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    1,977

    [emoji846]I even spelt yer name rong! Sorry...

    [emoji846]I even spelt yer name rong!
    Sorry [emoji846]

    Sent from my SM-G950U using Tapatalk
  20. Thread: Reverse Return

    by icy78
    Replies
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    1,977

    3 likes .....WANE3298![emoji846] Sent from my...

    3 likes .....WANE3298![emoji846]

    Sent from my SM-G950U using Tapatalk
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    A tankless water heater is not going to get you...

    A tankless water heater is not going to get you hot water faster than a typical tank setup. A water heater stores water at 120 degrees for your use when you need it. With the addition of hot water...
  22. Thread: Reverse Return

    by icy78
    Replies
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    1,977

    If there is too much flow resistance, then the...

    If there is too much flow resistance, then the pump will be running to the far left of its curve and that will give it an early failure. It can lead to recirc of water at/inside the pump. Makes for...
  23. Thread: Reverse Return

    by icy78
    Replies
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    1,977

    They could have high flow on the pipe that wore...

    They could have high flow on the pipe that wore and still be restricted on the two floors that don't have flow which would be a balance issue.

    However, let's say that the flow is correct or low....
  24. Thread: Reverse Return

    by icy78
    Replies
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    1,977

    I'm interested in that you say the piping is...

    I'm interested in that you say the piping is paper thin. That sounds like the pipe flow velocity is too high and wore the pipe.

    Appears to be a overpumped/balancing issue.

    Sent from my...
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    Yeah, like Redman said. Also if you search the...

    Yeah, like Redman said. Also if you search the site on this, you'll find a lot of threads and demonstration videos.

    Sent from my SM-G950U using Tapatalk
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    That's what I wanted to know. Thanks Sent from...

    That's what I wanted to know. Thanks

    Sent from my SM-G950U using Tapatalk
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    Hey that's cool! @Wayne3298 @bradluke As...

    Hey that's cool!
    @Wayne3298
    @bradluke

    As balancers, do you guys have input on these?
    Work ok for...say just 1 room (of many) all served by a single zone constant volume heat/cool system?
    ...
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    Cooper Atkins SH66A . I think that's NIST...

    Cooper Atkins SH66A .
    I think that's NIST traceable.

    Sent from my SM-G950U using Tapatalk
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    I've seen 5k, 3k, and 10k on their equipment. All...

    I've seen 5k, 3k, and 10k on their equipment. All commercial tho.

    Sent from my SM-G950U using Tapatalk
  30. Replies
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    How is it that you see 35f SLSH pickup in a self...

    How is it that you see 35f SLSH pickup in a self contained case? Lots of coiled suction line?
    111f at 70 ambiant, is a bit high but I suppose theres some recirc happening?
    Wrong txv? Worn seat? ...
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    Raise the CO to 14-16f and set CI at 37-38f. So...

    Raise the CO to 14-16f and set CI at 37-38f.
    So 14 psi and 33.5 psi.

    Sent from my SM-G950U using Tapatalk
  32. To me, a brief look at your numbers shows that...

    To me, a brief look at your numbers shows that you're under fired.
    You could check your orifice sizes and I would also check and make sure that you pull lo-nox inserts out. Then run your...
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    Ask them why. If it's to protect the...

    Ask them why.
    If it's to protect the compressor....I'd opine that they dont really understand what we've been discussing.

    If it's to keep the evap from having lower pressure than the water side,...
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    Running in a vacuum causes scroll failure or I...

    Running in a vacuum causes scroll failure or I should say scroll compressor failure, by causing a short at the fuseite connections.
    Is that because there's no cooling effect and the Heat at...
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    It's always a tough sell telling people that youd...

    It's always a tough sell telling people that youd like to install a tee for combustion air from inside .
    Then you go through the whole battle of, well ....doesn't that reduce the efficiency? ...
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    There is nothing specific about how long a scroll...

    There is nothing specific about how long a scroll will last running in a vacuum. It would depend greatly on the strength of the vacuum to. The AE bulletin simply say not to run a scroll in a deep...
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    I don't know guys, I'm still thinking that if you...

    I don't know guys, I'm still thinking that if you had swapped pumps two and a half weeks ago you would have known right then if it was a pump problem or a system/ electrical problem.

    It is weird...
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    What's it in? Seen a few scrolls with bypass...

    What's it in?
    Seen a few scrolls with bypass timers for cold weather.
    Heatcraft uses em. 2 minute bypassI think .

    Sent from my SM-G950U using Tapatalk
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    My ladder blew down once. Now, I have a bungie on...

    My ladder blew down once. Now, I have a bungie on the top of my ladder all the time. It lightly stretches between a loose, burly ziptie on the 3rd rung down, and the same on the 6th rung down....
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    Curious. How did you happen to have that refer...

    Curious. How did you happen to have that refer identifier?
    Not a common tool I think.

    Sent from my SM-G950U using Tapatalk
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    With that 134a txv it may have 134a in already...

    With that 134a txv it may have 134a in already then?
    Some one changed the txv.
    The velocity in close coupled cases will allow you to run 134a with no oil change.
    At least I've found that to be...
  42. Replies
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    717

    401a (mp39) is very common around here. It works...

    401a (mp39) is very common around here. It works well.
    That's pretty old system there, so can you go with 409a? Or hotshot maybe, so you can stick with mineral oil?
    Otherwise switch to 134a. Be...
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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?

    Sent from my SM-G950U using Tapatalk
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    Switch the pumps. What happens? Does it follow...

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

    Sent from my SM-G950U using Tapatalk
  47. Thread: Trane aud issue

    by icy78
    Replies
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    400

    Trane will refer you to your local service...

    Trane will refer you to your local service provider.

    Sent from my SM-G950U using Tapatalk
  48. Replies
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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...
  50. 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...
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