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Type: Posts; User: rleo49

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    Metasys NCM problem

    Lost my n2 to several devices due to construction issues. Most of the devices off line are being replaced and were in buildings being remodeled but were not taken off the n2 and were just cut...
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    Is there a website that would have that info?

    Is there a website that would have that info?
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    Torque values on York Z style compressor

    Does anyone know? These bolts are the ones( 14) that hold down the terminal block. Set them at 25 pounds. Compressor is a ZB4K1 in a YORK M-N YCUZ33 condensing unit. Appreciate any help. ...
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    Thanks!

    Thanks!
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    Battery in DX-9100

    I have a DX that has the battery icon blinking on it. Will a weak battery lead to control issues?
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    Only time will tell but all is well for now....

    Only time will tell but all is well for now. Thanks
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    I never read negative voltages at any of the...

    I never read negative voltages at any of the devices or the n2. I put the DX in late on Friday and it solved the problem. I will post a follow up on Monday.

    chas_md, when you say problems...
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    Nothing was added to the DX expansion bus. I...

    Nothing was added to the DX expansion bus. I didn't focus on the DX because I could grab it with CVT Pro. I should have because it's the device that's ahead of the UNT's.

    Thank you steves4 and...
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    This is an existing Network so address issues and...

    This is an existing Network so address issues and new devices would not apply. I isolated it today to a DX on that segment. Left the DX off the N2 and my 4 UNT's are back. Going to replace the DX...
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    Metasys NCM Problem

    Looking for any ideas to check the problem I'm having. 4 of my UNT's are causing my NC-M-N 350-701 REV.G to drop most of the devices on the N2 and others dropping in and out. I can see the other...
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    Daisy chained the 2 stats and cut out the excess...

    Daisy chained the 2 stats and cut out the excess wiring and that took care of the problem. Thanks for the help.
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    Metasys NCM Problem

    We have an older version with NCM's. The problem it seems is that its has too long of a run if you consider both directions it runs and by that I mean 1 loop goes to 2 buildings and the other to 3....
  13. Thread: Modularm 75

    by rleo49
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    Thanks Mojo. The place the sensor is located is...

    Thanks Mojo. The place the sensor is located is wrong I think. It picks up heat from the defrost heaters because it's located directly behind the evaporator. I understand why you want the temp from...
  14. Thread: Modularm 75

    by rleo49
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    I'll do that thanks.

    I'll do that thanks.
  15. Thread: Modularm 75

    by rleo49
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    2,032

    Modularm 75

    Has anyone worked with one of these. I don't have any literature on it and what I need to know is how to set the alarm setpoints. It's on a walk in freezer that has the setpoint at 58 degrees which...
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    I noticed that and subtracted the offset. The...

    I noticed that and subtracted the offset. The warm cool adjust does change when manual setpoint is adjusted. Just seems odd.
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    Is it unusual for the warm/cool adjust to be at...

    Is it unusual for the warm/cool adjust to be at -0.0?
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    That took care of it, thanks.

    That took care of it, thanks.
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    Found out from Warren that installer must have...

    Found out from Warren that installer must have the stages reversed. The problem is that they are 40 units wired like this and have been that way for 7 years. My supervisor is not convinced saying...
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    I'm going to check with the manufacturer today. I...

    I'm going to check with the manufacturer today. I will post up tonite. Thanks for the reply.
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    Warren Electric Control Question

    Looking for opinions as to why a 2 step control system with 3 circuits would have the first stage energizing a contactor that does not provide any heat until the second stage comes in making all 3...
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    Warren Electric Control Question

    Posted twice
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    I replaced the rj45 on the controller but not on...

    I replaced the rj45 on the controller but not on the sensor. I'll do that on Monday, thanks.
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    JCI's TE67NP Sensors

    :confused:Having a recurring problem with sensors reading excessively high causing over-cooling of space. At first I thought it was a bad sensor, so I replaced it but then it did it again about a...
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    I found the same thing and thanks for your help....

    I found the same thing and thanks for your help. Any ideas as to who or how your controller had the points in override? It looks like it's possible for the controller to be in override and it not...
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    JCI's DX9100/Manual Overide

    I have the controller mentioned above that is and has been giving me problems. At first the VFD would only run on minimum speed. I took the control off the base and put it back on it then ran the VFD...
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    Thanks :)

    Thanks :)
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    Damper Motor Torque

    How would I fiqure which single damper motor to use while replacing an application with 2-30# motors? I have a supply duct 60"x24" and uses 2 motors. Of course one motor is clockwise and the other...
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    Thanks for all the replies. Everyone was helpful....

    Thanks for all the replies. Everyone was helpful. Using the resistance chart in the manual is more reliable than the voltage check on the control panel. It was easier to determine an out of range...
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    The entering water t-2 was 10 degrees off...

    The entering water t-2 was 10 degrees off according to the voltage chart. Replaced it late this afternoon and did not display 61 anymore but I'm still concerned because according to the voltage...
  31. Thread: Pan Won't Drain

    by rleo49
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    One other condition to check is the position of...

    One other condition to check is the position of the dampers. If you have return air and outside air dampers that are both closed you will too much negative pressure and pull water out of the pan and...
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    It was raining here today but i will check the...

    It was raining here today but i will check the pressure drop tommorow.

    It's been awhile but I think if the thermistors are out of range it could cause the same problem?
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    Older Carrier Flowtronic

    Carrier Chiller M/N-30GB125-650 is displaying code/fault 61 which is a water low flow fault. I replaced the flow switch and it still had the fault. I jumped across terminals 13 and 14 on the...
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    If I manually ramp up the vfd the signal will...

    If I manually ramp up the vfd the signal will increase from the transducer. What I find confusing is that the jumper settings on the vfd are set jp1 to amps and jp2 to 0-5 vdc. We have two other...
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    Setra Transducer

    I have a York Air Modulator (VFD) that will not ramp up above 15hz. Is their a quick way to check the setra control. I have 15v between common and exc and 0vdc between com and out. Correct me if I'm...
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    Worked just like you said thanks. ????? cleared...

    Worked just like you said thanks. ????? cleared up and seems to be operating properly. Thanks for everyone who helped.

    Richard
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    I'll check this on Monday.

    I'll check this on Monday.
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    I looked at the autocalibration mode and it...

    I looked at the autocalibration mode and it didn't give me an option to run it. It had something like 336 hours to calibrate and seemed to be counting hours. It had 15 hours then 16 an hour later. In...
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    That was something I had checked. The tubes were...

    That was something I had checked. The tubes were connected correctly and I had a slight difference in pressure with the damper closed.
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    Thanks for the input on the tubes.

    Thanks for the input on the tubes.
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    Great. I'll do that tomorrow and post the...

    Great. I'll do that tomorrow and post the results. Thanks!
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    HVAC PRO Commisioning

    I replaced a AP-VMA 1420-0 controller to a Titus DTQS 0614 2 VAV box. I replaced it because it was showing air flow that wasn't there and had no damper control. I downloaded the commissioning program...
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    :)

    :)
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    Thanks for all the help:)

    Thanks for all the help:)
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    Closed Loop Chilled Water Treatment

    I'm new to water treatment so when I was asked to treat the loop with a corrosion inhibitor of course I have to "do it right". When I asked my boss how do I know when the right ratio he said they had...
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    I would get permission if possible from the...

    I would get permission if possible from the management and then get a licensed and bonded plumber to install a filter/strainer that has a cloth sock as filter and not the woven type. Tell him you...
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    Due to your detailed response I was able to...

    Due to your detailed response I was able to understand what to look for. The controller was sending the correct voltage but the common and the signal was reversed on the controller. I didn't realize...
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    Thank you for sounding so confident in stating...

    Thank you for sounding so confident in stating that the settings were fine. It gave me the confidence to analyse the settings and understand exactly why they were set that way. Thanks!
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    Will check on that today thanks!

    Will check on that today thanks!
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    My output never changes from 0vdc. Changing the...

    My output never changes from 0vdc. Changing the action of the valve in not the solution at this point. The problem is my voltage output is never 10vdc. Thanks for the help so far.
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