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  1. Replies
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    is there a phase monitor or any other safety that...

    is there a phase monitor or any other safety that an be cutting it off? you need to check all voltage and tighten all the connections an be sure your power supply is solid. start there
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    running a slightly smaller txv was once common. ...

    running a slightly smaller txv was once common. Yeah at 100% load you could starve some, but the units never really run at 100% unless totally sized wrong. it allows better throttling.
    Make sure...
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    7 flashes in a roll out fault. page 14 of the...

    7 flashes in a roll out fault. page 14 of the install manual.

    inducer will run on roll outs and high limit trips. Which way is the wind blowing? is it possibly going straight into the flue...
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    Have you used the weather add on yet?

    Have you used the weather add on yet?
  5. heating loop. roll on

    heating loop. roll on
  6. Replies
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    Horizontals--Wouldnt do it.

    Horizontals--Wouldnt do it.
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    Did you check the discharge temp of the two not...

    Did you check the discharge temp of the two not working?
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    Everything you just described is normal operation...

    Everything you just described is normal operation of a part start winding. The compressor isnt going to start with half the wingdings energized. I don't ever remember seeing a 06e pump before the...
  9. being it has a comfort link. you could just swap...

    being it has a comfort link. you could just swap that out and put a UPC ( if it doesn't currently have total unit control) and you would then have bacnet.
  10. Replies
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    https://www.carrier.com/commercial/en/us/products/...

    https://www.carrier.com/commercial/en/us/products/chillers-components/water-cooled-chillers/19xr/#documents
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    812769812770

    812769812770
  12. Replies
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    very possible. did you check the other items at...

    very possible. did you check the other items at all. I'm just curious
  13. good points. cable and a family cell bill is...

    good points. cable and a family cell bill is 5-600 a mo.
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    can you access the upc? I see you have the usb-l...

    can you access the upc? I see you have the usb-l connected.

    do both your tx and rx lights flash on the service tool? and its not on LEN. Im guessing you know that though.
  15. doesnt matter if they are working 2 or 3 jobs....

    doesnt matter if they are working 2 or 3 jobs. unemployment goes by people out of work, not jobs taken.

    And thankfully there are enough jobs for people to work 2 or 3 and not just one. Then with...
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    it comes with the doas. there are some settings...

    it comes with the doas. there are some settings in there to allow it to be discovered. Took me a while to get the guide. carrier really has shit on these units.
  17. this unit serves a high body count 30x60 room....

    this unit serves a high body count 30x60 room. The demand for fresh air to maintain 775 ppm co2 is about 35% damper. Most of the year the humidity is about 65% So they asked to make the unit...
  18. the head master control should have a heat mode...

    the head master control should have a heat mode bypass relay.
    And set that stat up correctly
  19. Replies
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    another thing with ALL rtu units. the factory...

    another thing with ALL rtu units. the factory sized pulley is set for a free flowing concentric ( no static) once you put it on a system with duct work the cfm drops due to static. On every 48...
  20. I have a building that has a Carrier 48LC VFD...

    I have a building that has a Carrier 48LC VFD drive and 3 stages of cooling that work on a single evap.
    I run the first stage of cooling and modulate the vfd to get a 40 deg suction line temp. ...
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    You should also take a look at the txv bulbs. ...

    You should also take a look at the txv bulbs. Back in the day sporlan had it in the documents, now they don't. But the cap tube coming off the sensing bulb must be at the highest point. If it isnt...
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    the best thing we did was rip out the trane...

    the best thing we did was rip out the trane controllers and replace them with our own.

    lots of good comments as to why the econos may not be keeping up
  23. Replies
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    when I finally got the set up guide I can now...

    when I finally got the set up guide I can now discover the bacnet points.
  24. Replies
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    you want to ask maxburns

    you want to ask maxburns
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    addison makes the DOAS unit. I havent run across...

    addison makes the DOAS unit. I havent run across the iaire yet.
    Addison uses ALC oem controls. Being they are designated 16 in their address they are supposed to be uploadable to the I-VU. But...
  26. Replies
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    Carrier Doas

    Anyone had any luck communicating with the unit? BACnet of course.
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    typical carrier there is a molex plug you just...

    typical carrier there is a molex plug you just plug into. after the jumper side is unplugged. If thats an energy x it should still be the same.

    go here...
  28. what is the must need for the constant volume...

    what is the must need for the constant volume through the ah?
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    no thats the newest

    no thats the newest
  30. can you see these tables? 812098 812099

    can you see these tables?

    812098


    812099
  31. you need to delete all schedule groups in the...

    you need to delete all schedule groups in the I-VU. the system will prioritize that schedule first. Will this fix your issue, not sure. I don't try to bacnet into my own stuff to have that...
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    where in va are you?

    where in va are you?
  33. email me and I'll give you someones number

    email me and I'll give you someones number
  34. Replies
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    the 5 trane rtu I have at a site have the analog...

    the 5 trane rtu I have at a site have the analog input, and you can set the points with tu or bacnet OR what im doing is using the RH dry contact input to initiate. I use a RIB to isolate the...
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    Dehumidification will suffer. and there are very...

    Dehumidification will suffer. and there are very smart engineers who designed it to work in counter flow. Tell your customer that for proof.


    I'd say a 30% loss in performance minimum.
  36. im rereading your first post as i am logged in...

    im rereading your first post as i am logged in live to a site.
    reference name space temp is the final output for the space temp, nothing is after it in the program.
    SPT is a typical wall sensor...
  37. its possible that the point got locked during...

    its possible that the point got locked during unit start up so the cooling would run. Does the job have an I-vu or equipment touch? you can fix it with that. priority level 16 is the only...
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    Fixes that

    Fixes that
  39. Replies
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    [QUOTE=TechmanTerry;25782083] they never...

    they never calculate make up air. 500k boiler. " but there is space under the door"
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    It varies a lot with what boiler you are...

    It varies a lot with what boiler you are installing. We could be here all night talking about the multitude of options.

    When in doubt read the install manual. It will answer most every question...
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    have you looked into the things people mentioned?...

    have you looked into the things people mentioned?

    this is 134a right? by your temp drop you have way to much flow or low refrigerant. By the condenser temp rise its low. You're at 100% load...
  42. The pic is from snap. its the program that would...

    The pic is from snap. its the program that would be on the UPC if thats what you are using. you will need field assistant to change those settings. Obviously comfort link isn't doing it. But...
  43. you can move the wires IF it doesn't have staged...

    you can move the wires IF it doesn't have staged air volume or a 2-10 vfd output. Depends on the unit. And the RTU board defaults to a t55 sensor. Even if factory installed I put a duct probe in...
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    I wouldn't use it if it was new and updated. But...

    I wouldn't use it if it was new and updated. But why would you with I-VU pro. there isn't any new docs on partners about it since 2014.
    I think Balibe may work Carrier which he may have better info.
  45. check the default value. Also set your output...

    check the default value.
    Also set your output to refresh by time not cov.


    811505
  46. you are using the UPC control for bacnet?

    you are using the UPC control for bacnet?
  47. Replies
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    you can do UPC's that's by mstp. or you can...

    you can do UPC's that's by mstp. or you can use a ccn router which would be an IP connection. I dont know how your system works if that would communicate.

    for the router you need service tool...
  48. his description sounds like a fan coil to me.

    his description sounds like a fan coil to me.
  49. so I understand you correctly. there is a...

    so I understand you correctly. there is a chiller supply and return. boiler supply and return. and they both feed a single coil. Sounds like they are using the 3 way as a flow control to match...
  50. Chillerr123 email me. its in my profile.

    Chillerr123 email me. its in my profile.
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