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Type: Posts; User: Jerry Jessup

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    I have emailed you the manual.

    I have emailed you the manual.
  2. Thread: John Zink

    by Jerry Jessup
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    744

    Is that from the 06 portion of the model number?

    Is that from the 06 portion of the model number?
  3. Thread: John Zink

    by Jerry Jessup
    Replies
    3
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    744

    John Zink

    I have encountered an old John Zink rooftop unit. The model number is ADA-RCG-0601-23-1401-EC. Does anyone have any information on what size and voltage this unit is based on the model number?
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    Water Source Heat Pump

    Does anyone have information on a Mammoth water source heat pump? The model number is G043HHGF. We are having issues with the control boards.
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    York Wiring Schematic

    Does anyone have a wiring schematic for a York Model #D1HG060NO7925BDA gas/electric package unit?
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    Closed Loop Pump

    Does anyone know were I can find an IOM manual or rebuild manual for a 3BH-150P1 Weinman Pump?
  7. Thread: Metasys

    by Jerry Jessup
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    1,001

    Metasys

    I have a Metasys NTU 102. Does anyone know what the factory password(s) are for Johnson Controls when using the Network Terminal?
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    5 Ton AAON Unit

    In the attached document could someone explain why Aaon has the static pressure and TSP labeled the same? I thought static pressure and total static pressure where two different readings.
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    1,101

    Thanks y7turbo.

    Thanks y7turbo.
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    Velocity in FPM

    If a unit has a backward curved fan and is supplying 2020 CFM with a total static(measured at fan) of 1.1 how do you calculate the velocity in Feet Per Minute?
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    I'm trying to explain the importance and...

    I'm trying to explain the importance and correlation of duct static to unit performance to my boss without using too technical terms (he doesnt know much about HVAC just construction.)
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    Total Static Pressure

    Where is the best place in a system to check Total Static Pressure and Static Pressure?
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    1,572

    Ok Blabath you caught me on a...

    Ok Blabath you caught me on a technicality.:cheers:
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    A technician that knows what an " Eddie Current...

    A technician that knows what an " Eddie Current Test " is, signs of a true professional.
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    One way to test is to turn off the unit, unplug...

    One way to test is to turn off the unit, unplug the economizer board plug from the main control board and then turn the units disconnect back on. If the blower comes on then replace the economizer...
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    The Trane unit I was working on had the same...

    The Trane unit I was working on had the same symptom. I also thought it was the main control board at first, but after some reading I found that I had a faulty economizer board. I purchased a new...
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    I ran into this type of problem just 3 weeks ago...

    I ran into this type of problem just 3 weeks ago on a Trane unit. Does the unit have an economizer?
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    aNtHoNyNoZ, I have attached an artilce on...

    aNtHoNyNoZ,
    I have attached an artilce on the EXV.
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    If the proper valve size is selected it should...

    If the proper valve size is selected it should work. But, you can't reduce the capacity any lower than 50% or oil not getting back to the compressor could cause bigger probelms
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    Have you looked into putting in a Rawal Valve?

    Have you looked into putting in a Rawal Valve?
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    The website will give you date,time and locations...

    The website will give you date,time and locations the classes are being held , but I dont think they have web based training.
  22. Thread: AAON Unit

    by Jerry Jessup
    Replies
    31
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    3,884

    The ones I am looking at are 8 tons ,we are...

    The ones I am looking at are 8 tons ,we are having issues with a pulsating sound in the conditioned space. I am thinking that no one has referenced the fan curve sheet and the static pressure and or...
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    I have worked on many Lieberts and as long as the...

    I have worked on many Lieberts and as long as the piping has been installed properly and the units have been started up properly, they are very reliable. All that needs to be done is proper...
  24. Thread: AAON Unit

    by Jerry Jessup
    Replies
    31
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    3,884

    Texas Tech it appears that from what you have...

    Texas Tech it appears that from what you have encountered and match the problems we are having with our AAON units. It appears that the fan curve that comes with the units, must be followed through...
  25. Thread: AAON Unit

    by Jerry Jessup
    Replies
    31
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    3,884

    The start up is performed before the air balance...

    The start up is performed before the air balance so, I'm assuming that the fan curve would be referenced after the air balance to insure it is in the "stable" region or wait to for complaints to...
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