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  1. Thread: IVu usb-tkit

    by CHAINIK
    Replies
    20
    Views
    381

    You can only do that with communicating ZS...

    You can only do that with communicating ZS sensors, they may not be using that kind. Regular ones like the T55 could be on there, too.
  2. Thread: IVu usb-tkit

    by CHAINIK
    Replies
    20
    Views
    381

    If the pin spacing is the same, that may work on...

    If the pin spacing is the same, that may work on the local access connector, but it's not the proper connector. Easier to make a custom cable on a 4-pin mini Phoenix than try to source that specific...
  3. Thread: IVu usb-tkit

    by CHAINIK
    Replies
    20
    Views
    381

    Attached is the last order for these that I made...

    Attached is the last order for these that I made from Mouser, the part numbers should point you in the right direction. As to Phoenix connectors, the 3.81mm spacing ones are the mini-Phoenix used for...
  4. Thread: IVu usb-tkit

    by CHAINIK
    Replies
    20
    Views
    381

    I assume you're looking for the connector that...

    I assume you're looking for the connector that plugs into the Rnet ports, not the 3 pin phoenix at the adapter itself?

    Yeah, I could use one of those too. I spent a bunch of time searching for...
  5. Replies
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    1,248

    If you're referring to my comment about covering...

    If you're referring to my comment about covering up a CoreMax fitting, of course it's better to fix it.

    But unless you want to pull the entire charge, as I said, the CRT for that type of fitting...
  6. Thread: Oil Traps

    by CHAINIK
    Replies
    17
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    656

    Can you link a picture, I'm having trouble...

    Can you link a picture, I'm having trouble visualizing what you are referring to. What do you mean by "back over"
  7. I'm intrigued by your makeshift oil separator. It...

    I'm intrigued by your makeshift oil separator. It makes perfect sense, but I would have never thought of doing that.

    I'm not familiar with that particular unit, was there no way to drain the oil...
  8. He could be using 2 legs off a corner-grounded...

    He could be using 2 legs off a corner-grounded delta system, but that seems highly unlikely, nigh impossible in residential
  9. Thread: Lennox code

    by CHAINIK
    Replies
    6
    Views
    697

    When you see this code, is it static, or does it...

    When you see this code, is it static, or does it scroll across the display? If it scrolls across, that's not a code, that's the board telling you its software number. The boards starting with 8 do...
  10. Replies
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    3,712

    Maybe this? ...

    Maybe this?

    http://www.columbiamt.com/CMT-Marking-Stamps/Embossing_Dies.html

    Looks expensive
  11. Replies
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    292

    If I could get a hold of that guy, I would. He's...

    If I could get a hold of that guy, I would. He's gone and I'm trying to not only learn all this stuff, but fix lots of stuff that hasn't been right from go.
  12. Replies
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    292

    I think I basically understand the how, I was...

    I think I basically understand the how, I was wondering more about the whys. About the use of network schedules in iVu.

    This particular site has a mixture of network schedules from the old CV and...
  13. Replies
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    292

    CCN schedule questions

    Can anyone explain the network schedules a little bit and how iVu interacts with them? I get that, for example, a CID vav can be configured as a schedule broadcaster, and it can send out the...
  14. Replies
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    1,097

    The 38AUD would fill the bill here, but its equal...

    The 38AUD would fill the bill here, but its equal size compressors. It can come with a HGB on the lead circuit, but not a digital scroll. I think, but I'm not sure, that HGB in this case is actually...
  15. Replies
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    3,183

    Some of the office buildings that I go to are...

    Some of the office buildings that I go to are still 99% unoccupied with employees working from home, but the management had the ChEng force the OA settings to their maximum amount of ventilation...
  16. Replies
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    2,782

    It's probably 3/8 fittings you're thinking of....

    It's probably 3/8 fittings you're thinking of. It's a common size for 4-port manifolds, usually used for the vacuum pump connection.

    Core removal tools typically come in 1/4 and 5/16.

    By the...
  17. Replies
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    1,169

    Shouldn't that connection to the WH be a...

    Shouldn't that connection to the WH be a dielectric?
  18. Replies
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    1,248

    The next size up from 1/4 flare (not counting...

    The next size up from 1/4 flare (not counting 5/16) is 3/8, should be the same size as the large connection on 4 port manifolds. That's probably it. There's bigger available, but unlikely to be found...
  19. Replies
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    735

    I certainly would use the proper OEM for a brand...

    I certainly would use the proper OEM for a brand new machine, or any machine under warranty.

    Beyond that, sometimes it just depends on whether I need it right now or not. Solest 120 is available...
  20. Replies
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    1,625

    Is that fan and flex duct approved for use as a...

    Is that fan and flex duct approved for use as a kitchen exhaust?
  21. Replies
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    1,063

    I think maybe I'm circling some answers, but I...

    I think maybe I'm circling some answers, but I still have a very long way to go here.

    Maybe not with this particular controller, but perhaps with anything similar in concept, has anyone observed...
  22. Replies
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    1,523

    I know how they work, I was asking if the unit...

    I know how they work, I was asking if the unit was a 3 stage unit , that might explain the behavior that OP was asking about.
  23. Replies
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    1,523

    Are you sure that's not a 3 stage cool unit? Y1...

    Are you sure that's not a 3 stage cool unit? Y1 comp1, Y2 comp2, Y3 both?
  24. Replies
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    1,063

    Calling tech support is the problem, there are no...

    Calling tech support is the problem, there are no electronics allowed on the premises. I would like to be able to talk to them while I'm in front of the controller, because I forget things that I've...
  25. Replies
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    1,168

    Also, that may not be necessary. I know an ABB...

    Also, that may not be necessary. I know an ABB ACH550 will control a tower fan VFD on its own with just a water temp sensor, using the macros. All it needs is its own temp sensor, and a DI S/S, off...
  26. Replies
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    1,063

    Emerson EXD superheat controller

    Is anyone familiar with these controllers? I have the instructions for it, but it doesn't go into a lot of detail, I was hoping there was a longer technical document or something like that. The...
  27. Replies
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    1,386

    https://www.dwyer-inst.com/PDF_files/CSG_iom.pdf...

    https://www.dwyer-inst.com/PDF_files/CSG_iom.pdf


    This is the instructions from mine, the various wiring scenarios are on page 2.
  28. Replies
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    1,042

    Neg to actuator common, pos to actuator signal...

    Neg to actuator common, pos to actuator signal input.
    Two things, the actuator will still need to be connected to the power supply at 24V and common (assuming a standard 24V AC-DC actuator. And, of...
  29. Replies
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    1,386

    With a C7400, short across the terminals with a...

    With a C7400, short across the terminals with a clip lead, it should go into free cooling. Its been a while since I had to test one, but that works on Lennox M1 economizer add-on boards and Honeywell...
  30. Replies
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    1,386

    Yes that's the way Ohms law works. For our...

    Yes that's the way Ohms law works. For our purposes, put a 500Ω resistor across a 4-20mA signal, the voltage drop across it will be 2-10V. If you use a 250Ω, its 1-5V. For measuring the mA sensors,...
  31. Here's a possibility ...

    Here's a possibility

    http://docs.electronicaircleaners.com/honeywell_popup_aprilaire_brochure.pdf

    They are considerably more expensive than Aprilaire, so not a help for that.

    But I think...
  32. Replies
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    492

    Can you elaborate a bit on this? What happens if...

    Can you elaborate a bit on this? What happens if its too low? Does the oil not want to drop out of the refrigerant stream? Why is that?
  33. Replies
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    492

    As far as I am aware, that is correct. On the...

    As far as I am aware, that is correct. On the YCIVs I am used to, the EXV controls to a suction superheat of about 11, which leaves the discharge superheat at about 27-32, since the machine doesn't...
  34. Replies
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    1,392

    True, but come to think of it, the only reason...

    True, but come to think of it, the only reason its sloped is so that condensate will flow back to the inducer housing and out the drain. I guess it would work if it was sloped properly the other way,...
  35. Thread: FML

    by CHAINIK
    Replies
    34
    Views
    2,903

    Maybe with a lathe, which if you were going to go...

    Maybe with a lathe, which if you were going to go through the trouble of getting the shaft out, why would you not replace it? I canít imagine you could do it by hand with an angle grinder, or at...
  36. Replies
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    5,138

    What's supporting the gas line? It looks like its...

    What's supporting the gas line? It looks like its freestanding all the way up to the flex connection.
  37. Replies
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    867

    The small CompLift. Its great for roof hatches...

    The small CompLift. Its great for roof hatches and stuff. At up to 600lbs, its good for the 10-20 horse blower motors that just have to make it up one switchback to get out on the roof. I have a...
  38. Replies
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    Any pictures under the hood? I suspect its a...

    Any pictures under the hood?

    I suspect its a McQuay, but I really have no proof to support that. The brushed finish, and the fact that its similar to the old AAF Enercon SSOP panel, is what makes...
  39. Thread: FML

    by CHAINIK
    Replies
    34
    Views
    2,903

    What is it about churches that always seem to...

    What is it about churches that always seem to have the equipment that's from the 60s and the widest variety of "innovative" repairs.

    One church I went to had a Carrier AHU from the early 60s and...
  40. Replies
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    1,534

    yeah, us too.

    yeah, us too.
  41. Replies
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    1,395

    I know you don't make the rules, but what is the...

    I know you don't make the rules, but what is the point of fastening the unit to a pad that isn't attached to the ground and probably weighs less than the unit ?
  42. Replies
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    515

    I don't know about cheese, but using H20 as a DX...

    I don't know about cheese, but using H20 as a DX refrigerant would pose some considerable challenges, primarily due to the massive expansion in volume from liquid to vapor.

    Maybe cheese is similar...
  43. Replies
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    94,540

    I have never heard this. Do you have a source for...

    I have never heard this. Do you have a source for this claim?
  44. I was just being a smartass. I am under a...

    I was just being a smartass. I am under a national agreement myself. Also, I am Hvac in a local of primarily pipe fitters, so Iím not really looped in most of the time.

    So as to your original...
  45. For that size unit, 1lb can be a lot. I had...

    For that size unit, 1lb can be a lot.

    I had all three circuits in a +200 ton RB that were doing the same thing, pulled out 2lbs out of each, of the factory charge of 98lbs. Problem solved.
  46. I understood a couple of those words.

    I understood a couple of those words.
  47. Replies
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    1,462

    I'm no expert on this, but when it comes to...

    I'm no expert on this, but when it comes to communication wiring, what I've gathered from some controls training is, the reason that smaller gauge wire is spec'ed has less to do with its resistance...
  48. Right, I know how to set up the email alerts, and...

    Right, I know how to set up the email alerts, and got that sorted out, *but he was complaining about missing emails in the middle of the night.

    So, I got him text messages with the SMS gateway...
  49. https://www.disneydreamer.com/walt-disneys-biograp...

    https://www.disneydreamer.com/walt-disneys-biography-part-7-walts-mother-dies-walt-presses-on/


    In 1937, Walt and Roy (Disney) grew concerned about their parents who had been running a rooming...
  50. Replies
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