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Type: Posts; User: NMTech

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  1. Replies
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    Worked for me. Branch 0 was port 16.

    Worked for me. Branch 0 was port 16.
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    Update Yesterday I pulled vacuum. Did a triple...

    Update

    Yesterday I pulled vacuum. Did a triple evac. Last one pulled down to 56 microns. Went up to 226 after an hour and half. Released the gas. Today added 26.3 lbs with a recovery machine on...
  3. I see that working for sending the signal to the...

    I see that working for sending the signal to the es52. I need a controller to start and stop my motor. I dont see how a phase monitor would tell the starter on the motor to disengage when running? Am...
  4. Just found this. ...

    Just found this.
    https://dynagen.com/es52-auto-start-engine-controller

    I think this will do what I want. Looks like it senses the mag needle and disconnects the starter. What do you think?
  5. Sorry for being so vague. There are to blowers to...

    Sorry for being so vague. There are to blowers to keep the bubble up. There is a primary blower that has a 10hp motor. The secondary blower has 2 motors a 5 hp motor and a gas motor. The gas motor is...
  6. Starting gas back up blower motor for swimming pool bubble.

    Hello all,
    I cant really find anything on the web about how to control this. Are current gas motor keeps burning up starters. The controls are very old. Is there some sort of sensor that tells the...
  7. Replies
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    Did a 610 psi pressure test on the unit...

    Did a 610 psi pressure test on the unit yesterday. Held. It was 600 this morning and went up to 615 this afternoon. Little warmer today. I was really worried about the flares but it worked out. Still...
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    Do you guys consider a sweeping bend a bend for...

    Do you guys consider a sweeping bend a bend for calculation for Diamond Site Builder?
  9. Replies
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    I'm taking someone else advice on this site....

    I'm taking someone else advice on this site. Saving all of my cuts of copper and going to measure and add my bends at the end of the job.
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    I ended up flaring at the indoor unit. I really...

    I ended up flaring at the indoor unit. I really wish Mitsubishi would have left 1 more inch so I could swage and braze. I got 4 more units to install and we'll see how the pressure test goes. There...
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    Mitsubishi said it was okay to braze. But now I...

    Mitsubishi said it was okay to braze. But now I look at it there is a bulge in the liquid line right next to the flare. Looks like it might be a strainer. I would have to cut it out to braze.
  12. Replies
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    Thanks for your responses. Any ideas on...

    Thanks for your responses. Any ideas on shortening the drain line. These Citi multi head drains extend the length of the head.
  13. Replies
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    Would you trust Stay Brite 8 with 600 psi 24 hour...

    Would you trust Stay Brite 8 with 600 psi 24 hour pressure test?
  14. Replies
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    I do understand that but all the hard copper from...

    I do understand that but all the hard copper from the outdoor twinned units to the bc are all brazed. Also all 32 service valves are also brazed. We always purge nitrogen. Dont see it hurting...
  15. Replies
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    All of my linesets will be brazed to my service...

    All of my linesets will be brazed to my service valves on the bc.
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    Okay guess I will be flaring. I remember them...

    Okay guess I will be flaring. I remember them saying in the city multi class that you could braze. Maybe I miss understood.
  17. Replies
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    Mitsubishi Multi City Install Questions.

    Hello all,
    I got a few questions about the indoor heads. PKFY-P06NBMU-E2R1
    Are these allowed to be brazed? Cant find any where were it says you cant. Also want to shorten the drain hose so I can...
  18. Replies
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    Yeah we talked about it after the fact. Trane...

    Yeah we talked about it after the fact. Trane laid this out for us. Not to happy with them. Units are already in. Were going to a training for Mitsubishi VRF in Dallas in a couple of weeks. First VRF...
  19. Replies
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    VRF Heads Mounted At 5 1/2' High

    Hello Every one. Another crazy questions. We are installing a Mitsubishi VRF sytem in our office. The way the offices are set up on the second floor is the exterior wall is only 5 1/2' high. It is a...
  20. It was doing it before I started. But it was flat...

    It was doing it before I started. But it was flat so I assumed it would cycle.
  21. Could be. Just seams crazy to ramp down at those...

    Could be. Just seams crazy to ramp down at those pressures.

    Model# d1np060n11006a
    S# noa7339120

    I'm just worried it's going to fail and get another call back. Thanks for the response.
  22. I didn't see one. No low or high pressure...

    I didn't see one. No low or high pressure controls. Even if there was why would it ramp down at 270?
  23. York 5 ton rtu ecm condensor fan acting up?

    I was working on a York 5 ton Rtu r22. One of the cap times rubbed and it lost its charge. I brazed, vac it down and recharged. The condensor fan keeps ramping up and down. It was 96 degrees out so I...
  24. Replies
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    Sorry been out of town for a few days. I took...

    Sorry been out of town for a few days. I took Spitz's advice. I blocked the airflow over the upper evap. Maxed out the vfd to 60 hz. I then gave it some more oa from the economizer. Started the...
  25. Replies
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    This is the model # I am working with ...

    This is the model # I am working with

    50TC-D16A2A6-0A0G0 carrier
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    Thanks. I'll look into it. When I turn up the...

    Thanks. I'll look into it. When I turn up the motor speed all of the way I dont get enough return from the building. It starts pushing alot of air out the door and starts to whistle pretty bad.
  27. Replies
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    Really I thought it would raise both? Never mind....

    Really I thought it would raise both? Never mind. Cant think straight today.
  28. Replies
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    Can some one answer this question. If I pull some...

    Can some one answer this question. If I pull some gas out and raise my superheat will it raise or lower my suction pressure.
  29. Replies
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    Bad part is my boss is a pe.

    Bad part is my boss is a pe.
  30. Replies
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    Theres is 6 fpb's in this building. Those are...

    Theres is 6 fpb's in this building. Those are all controlled by pneumatics. They will not let us run BAS for security reasons. The rtu is controlled by a tstat in the server room.
    I should have...
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    That's a good question. I'll look into that....

    That's a good question. I'll look into that. Thanks. My other worry is we are sensing the temp in the server room. We are really going to restrict the air when the server room is calling and the...
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    I know we are way oversized. But is there a fix...

    I know we are way oversized. But is there a fix for it. We did a like for like replacement. My boss ran the calculation. I would have to ask him.
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    Probably only a 5 ton. The original designers way...

    Probably only a 5 ton. The original designers way oversized. There is a server room with quite a bit of equipment in there they want to keep 68. The rest of the building is vav. Hot water coil...
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    Didn't get that far. Ran out of time. I will be...

    Didn't get that far. Ran out of time. I will be going back tomorrow. It has a economizer on it as well as powered return exhaust. We are currently not running the powered exhaust. This unit feeds a...
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    Side discharge and return.

    Side discharge and return.
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    The trane unit has been up there for 12 years. I...

    The trane unit has been up there for 12 years. I was wondering if I can pull some gas out to raise my superheat would it also raise my suction or make it even colder?
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    Oversized RTU freezing coil

    We replaced a Trane 15 ton rtu with a carrier rtu. It seams with the new carrier we dont have enough airflow across the evap. This is with only one 7.5 ton stage running. Its r410 a. My sub cooling...
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    EAGLES!

    EAGLES!
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    Fieldpiece JL3KR4 for $100?

    Hello,
    I looking at buying a used Fieldpiece JL3KR4 for $100. Is that a decent price used? You guys having good luck with these? Let me know your thoughts.

    Thanks
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