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Type: Posts; User: Jackshvac6

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  1. Replies
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    931

    Water volume is never a topic. Just trying to...

    Water volume is never a topic.
    Just trying to start a thread on it.
    I see lots of pipe sizing literature talking about gpm.
    My thought is if the water get heated too fast will it short cycle the...
  2. Replies
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    931

    Boiler water volume

    I was wondering if anyone had any idea on the amount of water a typical 100,000 btu household hot water boiler would hold? I do boiler work but never really had to guess on the actual amount of water...
  3. Thread: VRF system

    by Jackshvac6
    Replies
    10
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    942

    Itís about 6 months old

    Itís about 6 months old
  4. Thread: VRF system

    by Jackshvac6
    Replies
    10
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    942

    Solved it!Originally I went out there and found...

    Solved it!Originally I went out there and found the air handler control wires on the G terminals and the piping on the H port.After fixing that I had to relearn it at the vrv system outdoor unit.
  5. Thread: VRF system

    by Jackshvac6
    Replies
    10
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    942

    My issue is with the H port on the B.S. Box All...

    My issue is with the H port on the B.S. Box
    All the others are working
    The H port is cooling on a call for heat.
  6. Thread: VRF system

    by Jackshvac6
    Replies
    10
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    942

    The branch selector box piping is labeled A-H...

    The branch selector box piping is labeled A-H with 2 pipes coming of each letter towards each of the 8 air handlers coil.They are all the same size and type air handler.
  7. Thread: VRF system

    by Jackshvac6
    Replies
    10
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    942

    No there are 8 thermostats.One for each air...

    No there are 8 thermostats.One for each air handler
  8. Replies
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    5,218

    Open both your gauges all the way and turn on the...

    Open both your gauges all the way and turn on the nitrogen tank.
  9. Thread: VRF system

    by Jackshvac6
    Replies
    10
    Views
    942

    VRF system

    I was working on a daiken VRF system and the branch box
    had 8 air handlers
    One of the air handlers was cooling while in heating mode.
    I tried a new tstat.with same result.
    I ohmed out the low...
  10. Replies
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    8,211

    The liquid line. LMAO

    The liquid line. LMAO
  11. Replies
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    3,557

    Go start your own business. It fails just go back...

    Go start your own business. It fails just go back to working for someone.
  12. Replies
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    4,518

    It's a tough route to sit for the exam. The few...

    It's a tough route to sit for the exam. The few privileged can sit for exam
    What he means is the 2 years experience won't count because he wasn't being sponsored by his company.
    I agree you should...
  13. Replies
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    4,446

    I use the inficon TEK-MATE.Its ok.i still never...

    I use the inficon TEK-MATE.Its ok.i still never trust that the beep is actually a leak or a false reading.I put die in a system once a went back a week later and found the leak at filter drier braze...
  14. Thread: ductulator

    by Jackshvac6
    Replies
    31
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    14,415

    Your info was helpful.Thanks.Im on the right...

    Your info was helpful.Thanks.Im on the right track maybe.
  15. Thread: ductulator

    by Jackshvac6
    Replies
    31
    Views
    14,415

    My old hvac tech school notes show your formula...

    My old hvac tech school notes show your formula for friction rate.Manual D is not. a good book to follow
  16. Thread: ductulator

    by Jackshvac6
    Replies
    31
    Views
    14,415

    The friction rate formula is FR=PD◊100/TEL

    The friction rate formula is FR=PD◊100/TEL
  17. Thread: ductulator

    by Jackshvac6
    Replies
    31
    Views
    14,415

    So when coming up with a TEL on my clients attic...

    So when coming up with a TEL on my clients attic that has no ductwork it's up to me to come up with a number based on the location of my equipment and the farthest duct run?
  18. Thread: ductulator

    by Jackshvac6
    Replies
    31
    Views
    14,415

    While reading manual D the friction loss formula...

    While reading manual D the friction loss formula is pressure drop ◊100/TEL.
    Now I realize that is of little use because how can you have a pressure drop on duct work that doesn't exist yet?So the...
  19. Thread: ductulator

    by Jackshvac6
    Replies
    31
    Views
    14,415

    How can you use a TEL to find your friction rate...

    How can you use a TEL to find your friction rate when the ductwork or plans donít exist because you need a friction rate to creat ductwork
  20. Thread: ductulator

    by Jackshvac6
    Replies
    31
    Views
    14,415

    I hate manual D

    I hate manual D
  21. Replies
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    6,593

    Iím not a fan of removing schraders to vacuum. I ...

    Iím not a fan of removing schraders to vacuum. I do agree with purging with nitrogen when brazing.
  22. Replies
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    6,593

    I donít use the flow meter regulator with the...

    I donít use the flow meter regulator with the floating ping pong ball.I just listen for the nitrogen hissing out the hose before I attach it the the refrigerant piping loop and just let it flow in...
  23. Replies
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    6,593

    A nitrogen regulator that allows you to connect...

    A nitrogen regulator that allows you to connect the hose.Look up nitrogen regulator online.Whats important is that the nitrogen flow is low enough to not affect your brazing by pushing pinhole leaks...
  24. Replies
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    6,593

    Iím meant to say attach hose to either port after...

    Iím meant to say attach hose to either port after removing schrader valves.Sorry about confusion.
  25. Replies
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    6,593

    Attach one single hose to your nitrogen tank.Turn...

    Attach one single hose to your nitrogen tank.Turn on nitrogen tank until you can hear a very little bit of nitrogen leaving the other end of the hose. Remove both Schrader valves very important ....
  26. Replies
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    6,593

    Everybody tries to braze with nitrogen. If youíre...

    Everybody tries to braze with nitrogen. If youíre just doing one or two joints youíll be fine. nobody ever practiced this until about 10 years ago And all those units are running
  27. A little bit of that stuff always comes back out...

    A little bit of that stuff always comes back out on the floor if youíre trying to push it uphill.I always start at the highest point of the system and feed it couple ounces.if the indoor unit is in...
  28. Replies
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    50 psi is 34 degrees on NU22.At least the coil...

    50 psi is 34 degrees on NU22.At least the coil wonít freeze
  29. Replies
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    2,504

    I recently lost a charge of r22 on a York Rtu and...

    I recently lost a charge of r22 on a York Rtu and replaced it with NU22.Now the low pressure switch sends a signal to the board to shutdown because the system takes more than 90 seconds to reach...
  30. Replies
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    I recently put nu22 in an old York RTU that lost...

    I recently put nu22 in an old York RTU that lost its charge.Now the low pressure switch send a signal to the board to turn unit off.The system works fine if I jump out the low pressure switch.The...
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