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  1. excelent

    excelent
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    motor pulley divided by blower pulley times motor...

    motor pulley divided by blower pulley times motor rpm. You wont know if the motor is doing the actual rpm on the name plate or slippage. But it will get you close.
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    id do discharge of any chiller or pump. its...

    id do discharge of any chiller or pump. its better to keep the impeller loaded then not on the pump.
    And by keeping pressure on the chiller reduces the possibility of any cavitation.
  4. Your salesman is correct. the carrier VAV (...

    Your salesman is correct. the carrier VAV ( unless you have the newest program) must have a carrier vav controller to operate. ( even if just one with a space sensor) The linkage is the...
  5. was the unit they sent you a 0-10 or 3 step vfd?

    was the unit they sent you a 0-10 or 3 step vfd?
  6. next time use a ZS2P-car for a wall stat

    next time use a ZS2P-car for a wall stat
  7. Hopefully it doesn't happen again. But if it...

    Hopefully it doesn't happen again. But if it does tell the fool to get a controls expert (what us carrier guys are called in the program) to clip the std rtu file in. If they say they cant email me...
  8. that would only apply to a constant volume unit. ...

    that would only apply to a constant volume unit. And swapping a unit after its already on the roof and the customer is asking when his cooling is going to be on doesnt really allow the time for a...
  9. Carrier 48LCB as a stand alone non vav system

    The 48 LCB unit has the vav rtu board factory installed. It will only run with linkage.

    Now that I have my test center up and running I stated to play with the vav_rtu_opn options. This is what...
  10. DCV plus enough damper position for minimum...

    DCV plus enough damper position for minimum occupancy cfm.

    This is not official
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    that right. why would you need to configure the...

    that right. why would you need to configure the thermostat for electric heat?
    And why would the unit run in cooling if only w1 is energized. I'm referencing your previous comment


    VTP99 that...
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    you should go change them all.

    you should go change them all.
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    anyone in here know how to read that wire diagram...

    anyone in here know how to read that wire diagram posted previously?


    Can anyone that have made comments on operation show how on the wire diagram that their theory is right.
  14. im looking through the study material for the...

    im looking through the study material for the info. 3 max for ccn is correct.
  15. the dropbox link is in your email for the most...

    the dropbox link is in your email for the most current versions
  16. 2,12,26 is the newest driver 2.2 is the...

    2,12,26 is the newest driver

    2.2 is the newest software.
  17. if you email me yes

    if you email me yes
  18. for the carrier controllers. You should have the...

    for the carrier controllers. You should have the bt485 at either end. But carrier states that no more then 3 UPC should be on a buss. It would suck to have 7 comm lines but its what they tell us...
  19. the unloaded are best energized ( unloaded) on...

    the unloaded are best energized ( unloaded) on start up. and it doesn't matter which goes first.
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    if youre not using the thermostat in a gas...

    if youre not using the thermostat in a gas furnace/ ac configuration with no O/B output its not going to work. By testing with jumpers worked fine and thermostat didn't, there is the issue. stop...
  21. the solenoid unloaders are power to unload. ...

    the solenoid unloaders are power to unload. everything else looks right

    oil pressure would be a concern of mine on a vfd.
  22. I wouldn't do a scope of work under these...

    I wouldn't do a scope of work under these conditions. I'd tell them I rather give them $20 and them hire someone else. Because it doesn't matter what verbiage that's in your contract. If the...
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    What configuration is the thermostat in? are you...

    What configuration is the thermostat in? are you still trying to use the O output? did you set the stat for 2h2c conventional? If you didn't read 2 post down.

    Did you try putting the fan in on,...
  24. JJ Isome info to provide would be what type of...

    JJ Isome info to provide would be what type of vav box.. pass through, parallel fan or series. And if they are fan powered whats the cfm set points during reheat.
    If fans are they running. also...
  25. if they cant find the address, or addresses arent...

    if they cant find the address, or addresses arent known thats an issue.
    If there is a comm problem of course an issue.

    All things can be quickly found with service tool
  26. what wayne said

    what wayne said
  27. Does the unit have a comfort link?

    Does the unit have a comfort link?
  28. this is if the current actuator works. is the...

    this is if the current actuator works. is the shaft seal good etc. you should tell whoever you prefer to not do work like a boot licker. access the valve, remove it, and relocate or put a new...
  29. 814219 Document page 6

    814219

    Document page 6
  30. you have to hit attach, put in the address number...

    you have to hit attach, put in the address number and you should then attach.
    There is nothing automatic about it.

    Let me find a user manual for it
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    this unit as all carrier commercial heat pumps...

    this unit as all carrier commercial heat pumps operate this way.

    you only use a conventional 2c/2h thermostat with the fan control set to the unit controls fan in heating, just as you would a gas...
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    So someone asks you if you had a wire diagram. ...

    So someone asks you if you had a wire diagram. Not to be an ass but to direct you to where the issue is so you can fix it quick.
    Being pissed at someone due to lack of talent will get you no...
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    if you read the wire diagram i bet there is an...

    if you read the wire diagram i bet there is an end switch on the breaker. if comp one is bad disconnect the contactor coil wire, turn on the breaker and it should run
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    yup

    yup
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    Im going to say you put the comm in the ccn port...

    Im going to say you put the comm in the ccn port and not the local port. Once plugged in it wont receive data where. The service tool or ivu.
    Can you see the other devices on the bus?
    Did you...
  36. how did you make out?

    how did you make out?
  37. So there is a ton of missing info to even come up...

    So there is a ton of missing info to even come up with a recommendation. are you working on the condenser or evap side. chiller or boiler. Being you have PD on the pumps you should have a primary...
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    I can help you out. Email me its in my profile....

    I can help you out. Email me its in my profile.
    And equipment builder has no heat pump files since their commercial heat pumps use a conventional stat
  39. Before you run the wire id make sure that 2 of...

    Before you run the wire id make sure that 2 of those units have a single wire ran to it ( end of line connection) if only one unit has 1 and the other 3 have 2 then there is break somewhere you...
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    ALC is a great platform but I have never liked...

    ALC is a great platform but I have never liked proprietary. I install Carrier Open. Carrier and ALC are basically the same product made in the same building. There are some differences. Some...
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    honeywell makes a stat that has 0-10 an 4-20...

    honeywell makes a stat that has 0-10 an 4-20 outputs. The ones i had at a site did the hot and chilled water valves.
    its a starting point to look at

    For your application.
    Can you take a...
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    reverse return just takes place of balancing...

    reverse return just takes place of balancing valves. just put some balancing valves in. you will have more control.
  43. if youre connected to one of the 4 units and you...

    if youre connected to one of the 4 units and you can see those 4 and nothing else. And when you connect to the main loop and cant see the 4 units. the comm wire appears to not be connected...
  44. http://www.badgerwelding.com/tips/tip2.htm

    http://www.badgerwelding.com/tips/tip2.htm
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    this is a solid starting point. when it shuts...

    this is a solid starting point. when it shuts off does the compressor timer start? does it have batteries?

    I have had a bad contactor and every time it was energized the volts dropped enough...
  46. if youre asking on what to run your regulators...

    if youre asking on what to run your regulators at. It depends on the tip you are using. The size of the tip determines the pressure needed. its not a one and done setting.
    Guys have hit on the...
  47. on the economizer motor. you moved the control...

    on the economizer motor. you moved the control head, its one star head screw. then remove the base plate. you will see on the motor there is a 24v + common and a 2-10 in. connect there.

    The...
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    you may also need this 813082

    you may also need this

    813082
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    Here is the full info. 813081813080

    Here is the full info.

    813081813080
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    if you have a 4.0 you most likely have a 9...

    if you have a 4.0 you most likely have a 9 series. You cant update a 9 series. That if its an appliance.
    Reading your post it may sound like you possibly have a computer. which version are you...
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