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  1. Replies
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    Fixes that

    Fixes that
  2. 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...
  5. 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...
  6. 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.
  8. check the default value. Also set your output...

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


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

    you are using the UPC control for bacnet?
  10. 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...
  11. his description sounds like a fan coil to me.

    his description sounds like a fan coil to me.
  12. 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...
  13. Chillerr123 email me. its in my profile.

    Chillerr123 email me. its in my profile.
  14. IVU tools. which is field assistant, equipment...

    IVU tools. which is field assistant, equipment builder snap viewbuilder and apploader you will need the USB -L kit for connecting.
  15. when I say set up im referring to things like...

    when I say set up im referring to things like mode of control, as in always on, remote, or ccn. or dual chiller set up. resets. I just looked at some sites. they are changeable by the UPC...
  16. are these locked? 811235

    are these locked?


    811235
  17. Are you trying here? 811234

    Are you trying here?
    811234
  18. The carrier software had factory made programs...

    The carrier software had factory made programs for most chillers. I had an old one that it didn't ( comfort link equipped chillers)
    it talks BACnet. I don't keep up with the modbus notes but I...
  19. read document page 23 and 24 811042

    read document page 23 and 24
    811042
  20. Replies
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    Get an ivu and save the headache. it will upload...

    Get an ivu and save the headache. it will upload anything on the ccn. ( need the ccn usb or a ccn router.) and you can make new floor plan graphics if you want
  21. your carrier rep is right as in the rtu open...

    your carrier rep is right as in the rtu open board is locked and we cant change anything with it. thats why you need to add the uc.

    All carrier pic controllers are locked. rtu 1 and 2 wshp vav...
  22. Max has it right with the addressing to see each...

    Max has it right with the addressing to see each zone sensor. What you will need to do is add a opn-uc to the project. The uc can have 10 programs. OR write one program for all 20 rtu.

    Use...
  23. Awesome!! The Ivu, is it a 6.0 or older. You...

    Awesome!!
    The Ivu, is it a 6.0 or older. You can change can address with those

    6.5 and 7 they removed it
  24. Replies
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    the master stat communicates to the relay pack, ...

    the master stat communicates to the relay pack, the relay pack talks to the rtu through normal thermostat connections.
  25. Replies
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    I wasn't thinking that was the name of it. Yes...

    I wasn't thinking that was the name of it. Yes that would be helpful along with fan control. Good advice spitz
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    I've only ever had 45 deg. We had a vrf rep do a...

    I've only ever had 45 deg. We had a vrf rep do a class at the office. That's where I actually got the older comment from. Shows how much I have used flare through the years.
    Just looked on...
  27. Replies
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    what is a head master and what does it do?

    what is a head master and what does it do?
  28. Replies
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    dumb ass but LOL

    dumb ass but LOL
  29. Replies
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    for the full document...

    for the full document
    https://www.carrier.com/commercial/en/us/products/chillers-components/air-cooled-chillers/30rap/
  30. Replies
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    We have had a lot of power issues from storms. ...

    We have had a lot of power issues from storms. The chillers will run for months then trip on this code during a storm. Its most likely power supply rated.
    Today we had a T051 and another where...
  31. you have to do many oil changes, sporlan water...

    you have to do many oil changes, sporlan water filters and a long slow multil evac vacuum. All depends on if the water ruined the bearings or not.

    We had a site with this issue. Be sure you have...
  32. Replies
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    delay on break yes. delay on make , no

    delay on break yes. delay on make , no
  33. Replies
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    I like this guy

    I like this guy
  34. Replies
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    which way did you solve it, transformer or relay...

    which way did you solve it, transformer or relay and a 208 coil
  35. Replies
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    Loose connection or high amps.

    Loose connection or high amps.
  36. Replies
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    Be sure you have the correct Deg of flare angle. ...

    Be sure you have the correct Deg of flare angle. 410 equipment is 45 deg. Older stuff was 30 deg I believe.
  37. Replies
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    he is making a head master set up.

    he is making a head master set up.
  38. Replies
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    being your low ambient I'd also install a wind...

    being your low ambient I'd also install a wind baffle along with the controls.

    if I were doing your task I would either modulate the fans at a minimum of 85 deg line temp or 185 psi If its...
  39. Replies
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    carrier doesn't have a fan delay on in cooling,...

    carrier doesn't have a fan delay on in cooling, just heating
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    That's old Carrier gen 3 stuff. The...

    That's old Carrier gen 3 stuff. The communication is CCN. Id be surprised if the whole system works. only a few pieces are still available.
    Unless you guys have your own VVT system constant...
  41. Replies
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    did anyone previously discuss double row coils...

    did anyone previously discuss double row coils and the need to separate them?
  42. Replies
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    Remove the lint supply. Sounds like a...

    Remove the lint supply. Sounds like a laundromat. Re-duct the drier exhaust elsewhere.

    Also get micro chanel coils on the next unit change. They clean much easier. Just use a micro channel...
  43. did it work?

    did it work?
  44. Replies
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    I havent had to do this yet. I have not attempted...

    I havent had to do this yet. I have not attempted to look it up. Whats the value of the resistor.
  45. move to va and I'll give you a job

    move to va and I'll give you a job
  46. Replies
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    when changing compressors in a multi compressor...

    when changing compressors in a multi compressor refrigerant circuit. Be sure to check for acid before replacing just one.
    One burnt compressor creating acid in the process destroys the other two....
  47. this is from the start up manual on the 48LC*B...

    this is from the start up manual on the 48LC*B units.


    810703
  48. yup

    yup
  49. Replies
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    why are you guys referring to the clo. and what...

    why are you guys referring to the clo. and what do you think is causing it to trip
  50. Replies
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    with a 20 sc your defiantly have charge. th 20 sh...

    with a 20 sc your defiantly have charge. th 20 sh shows not enough flow. those txv are adjustable. I would turn the stems out 1 turn and see what happens. you will want to adjust each circuit...
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