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Type: Posts; User: etheric999

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  1. Replies
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    Automated logic ZN551 controller

    Hello, I'm trying to get heat to a classroom heat pump it runs off of automated logic. Problem is when I log onto WEBCTRL I'm getting question marks. I get a message that says download parameters,...
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    2,628

    Automated logic

    Hello I'm working at a high school that uses automated logic DDC, I cannot make any changes to setpoints, vav boxes etc... Or even monitor what's going on because all I'm getting are question marks....
  3. Thread: R22 drop in

    by etheric999
    Replies
    5
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    612

    R22 drop in

    Hello, I've never used any of the r22 drop in replacements, what is the procedure any parts or oil to change in the retrofit, and what is the best one out there? Thanks
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    Mcquay ALS Chiller problem

    Mcquay ALS chiller problem
    Working on a mcquay ALS Chiller,as i check alarm history, first I got an alarm saying no 5 vdc, then another alarm saying bad evap leaving water temp sensor, then another...
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    638

    Ice machine float valve

    Hello I got a call today for an ice machine not making ice. It's a Hoshizaki KM 500 MWE, I cleaned it really good and turned it on nothing happened, no water flowing. I checked the float valve seemed...
  6. Thread: AAON unit

    by etheric999
    Replies
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    1,271

    AAON unit

    Hello, I'm working on an AAON rooftop unit model 66106, I've got a bad fan cycling switch it seems, the switch is a wilspec HS 300-28-0013. My question is are these switches schraedered, or am I...
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    580

    Honeywell Modutrol Motor

    Hello I have to replace a mod motor IV
    From what I hear its not just a simple drop in, you have to set these things up, any help on the that process would be helpful. Thank You
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    659

    Mcquay rooftop unit

    Had to check a mcquay rooftop unit model RPS, tries to start and goes out on flame failure. The maintenance guy says that it will only fire if he cover the inducer fan intake, anyone ever run into...
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    1,635

    Thank you

    Thank you
  10. Replies
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    1,635

    Automated logic

    Hello, working at a school that has automated logic BMS. I've got a whole section of the building with no communication, the computer graphics show up but I get no input reading, just a bunch of...
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    811

    Thank you guys

    Thank you guys
  12. Replies
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    811

    TXV Problem?

    Good morning working on a rooftop split trane unit, pretty old piece of equipment. My partner changed two solenoid valves and 2 TXV's, problem is he sends me to charge it and I notice 1 of my TXV's...
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    trane voyagers

    Hello, i have to change the high pressure switch on a trane YCD unit,are the hi side pressure ports on these units schradered ?
  14. Replies
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    1,340

    The drive is bad, are the vfd's difficult to...

    The drive is bad, are the vfd's difficult to replace,ive seen it done working with a co worker,but not sure about setting the parameters, and everything?
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    1,360

    Swimming pool hvac

    Hello, I have a corroded air handler in a school for heating the pool area, it has to be replaced, any suggestions on equipment that can handle the chlorine, also I am thinking about putting some...
  16. Thread: Mcquay RPS

    by etheric999
    Replies
    4
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    660

    Don't have the model # offhand but it uses...

    Don't have the model # offhand but it uses microtech controller
  17. Thread: Mcquay RPS

    by etheric999
    Replies
    4
    Views
    660

    Mcquay RPS

    Hello I have to change filter driers on a mcquay rooftop package unit, can I pump down, de energize the solenoid, close that valve at the corner, and hope the solenoid don't leak, I'll recover if I...
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    515

    Boilers, burners, combustion

    Hello, I'm trying to learn more about burners and combustion, any good classes in the nj/pa/ny area, any good books out there?
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    hvac problem or electrical ?

    i have a building with a ton of florida heat pumps,cooling tower, and heat exchanger,heat is rejected into the hot water loop from the heat pumps and the heat exchanger transfer the heated water into...
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    718

    Jumped out the TD the compressor started up,I'll...

    Jumped out the TD the compressor started up,I'll replace it tomorrow.
  21. Replies
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    718

    Mcquay time delay

    Working on a mcquay rooftop package unit 4 stages of cooling calling but the compressor will not start. I checked voltage at the time delay I had no voltage going to terminal 2 or 1, terminal 3 is my...
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    3,050

    Liquid line sweating

    Working on a mr slim unit today and glanced over at the mcquay rooftop unit and noticed the liquid line sweating after the liquid line filter pass the solenoid, I'll check it out further tomorrow...
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    436

    Side by side whirlpool

    Hello I'm a hvac tech doing mother in law a favor checking out her fridge. Freezer is cold and there is cold air coming from the top vent in the fridge compartment. I noticed there is a vent closer...
  24. Thread: ice machine

    by etheric999
    Replies
    11
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    982

    ice machine

    hello working on an ice machine scotchman prodigy modular cuber model #C0630SA-32A. Initially it was not getting water so, i changed the filter and and cleaned everything up.unit ran and produced ice...
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    1,710

    the boilers supply several air handlers, and...

    the boilers supply several air handlers, and supply two large storage tanks for domestic hot water.
  26. Replies
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    1,710

    Boiler Tubes

    What would cause tubes on a large cleaver brooks boiler to leak,tubes are constantly being replaced almost every winter,i do know that the building guy manually feeds these boilers when the pressure...
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    834

    Is motor grounded?

    Hello, when checking motors to ground using continuity,when i turn the shaft i get a momentary continuity beep on my meter i think i get one on each full turn, is this normal or is my motor grounding...
  28. Thread: Antifreeze?

    by etheric999
    Replies
    7
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    1,406

    Antifreeze?

    Working with a tech on air handlers that are located outside,every winter the boiler goes down and hot water coils freeze and bust, i suggested last year that we add glycol to the system, which has...
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    Circuit Setter

    I have ran across a few circuit setters on hot water piping to air handlers as well as hw and cw unit ventillaters, im not familiar with the valve what exactly is their purpose and how do they work?...
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    pump alignment

    hello i would like to know the right way to align centrifigul pumps, i was told that i would need a dial to do this, but wouldnt it also work using levels, is there any literature on how to align...
  31. Thread: Adding Oil

    by etheric999
    Replies
    13
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    2,293

    Adding Oil

    working on a mcquay rooftop unit with 2 semis, 1 compressor is out of oil,found circuit #1 empty from a leak, fixed leak added refrigerant, and compressor tripped on oil pressure.Question is how do...
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    new refrigerants

    are we required to get certification for the newer refrigerants like 410a and R407?
  33. Replies
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    Heat Reclaim

    Hello all, i ran into a mcquay rooftop unit today,it has something called heat reclaim valve on it could you explain what is heat reclaim for and how does the valve work, thanks.
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    hello, i am working on several univents on a...

    hello, i am working on several univents on a college campus, i keep finding the actuators bad, and making a clicking noise. These are seimans SQS65 actuators(24 volts, 10 dc signal from the bacnet)...
  35. Thread: sensors

    by etheric999
    Replies
    2
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    674

    have a few sensors(mixed air and supply air)on...

    have a few sensors(mixed air and supply air)on trane climate changers that are giving false reading such as 300 degrees on summit. is there a way to check these sensors? thanks
  36. Replies
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    there is power to the pcm, this is a vav...

    there is power to the pcm, this is a vav system,checked the vav boxes they all were talking, but when i go back to the computer i look at the boxes and it says communication down, and i get a bunch...
  37. Replies
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    Hello, I am working with a trane summit system in...

    Hello, I am working with a trane summit system in a school, the problem is that in one area of the building i get no readings on the computer. The rooms all display zero degrees, and when i look at...
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    Working with my partner on a mcquay rooftop unit,...

    Working with my partner on a mcquay rooftop unit, some time the unit will start with no problem, other times we hear a loud chatter in the control panel, and then the unit will not start and the...
  39. Replies
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    1,077

    Hello, I have a burned out defrost heatrer on a...

    Hello, I have a burned out defrost heatrer on a woods upright freezer, cannot seem to find the part anywhere, no one carries it around here. Woods Model# F15WUA DO
    Serial # 05309430ED, Volts 115,...
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    1,199

    Hello, I do commercial and institutional HVAC,...

    Hello, I do commercial and institutional HVAC, never really worked on a freezer. I discovered that the coil was iced up and the fan was stuck on a piece of ice, so i manually defrosted it and got the...
  41. Replies
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    968

    Hello, my partner and i was working on a traulsen...

    Hello, my partner and i was working on a traulsen unit model# G22010. The complaint was that the box was warm, so discovered that the evaporater fans were not running. One of the clip on...
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    851

    I am particularly intrested in the compressor...

    I am particularly intrested in the compressor safties wiring.
  43. Replies
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    851

    Hello, would anyone happen to have a wiring...

    Hello, would anyone happen to have a wiring diagrahm or service manual for a trane condensing unit
    model# RAUCC404BJ03D, thank you.
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    1,082

    Hello, I am working in a school which has many...

    Hello, I am working in a school which has many nesbittaire floor unit ventilaters, does anyone have any literature on these units, or any tips? They are hot water units.
  45. Replies
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    729

    HELLO, I AM SOON TO BE STARTING A JOB WITH THE...

    HELLO, I AM SOON TO BE STARTING A JOB WITH THE SCHOOL DISTRICT, AND THEY HAVE TONS OF UNIT VENTILATERS,CAN ANYONE GIVE ME SOME INFO ON THESE THINGS, OR A WEBSITE,OR LITERATURE,I BELIEVE THAT MOST OF...
  46. Thread: reheat

    by etheric999
    Replies
    3
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    955

    hello, could someone please explain reheat and, i...

    hello, could someone please explain reheat and, i was working on a liebert deluxe that had reheat.
  47. Thread: VAV Info

    by etheric999
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    776

    Can anyone tell me where i may find info on VAV...

    Can anyone tell me where i may find info on VAV boxes,links or online mauals,etc... Thanks
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    887

    Hello, I will be working for the school...

    Hello, I will be working for the school district,im told that they have a lot of trane equipment, could anyone give me an idea of what type of equipment i may be running into,thank you.
  49. Thread: P66

    by etheric999
    Replies
    8
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    917

    Could someone please explain what a P66 is? Thank...

    Could someone please explain what a P66 is? Thank You
  50. Replies
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    713

    Hello, i do commercial a/c and heating, but one...

    Hello, i do commercial a/c and heating, but one of our clients have several domestic refrigerators in the lunch room, they complained that the freezer compartment freezes but the refrigerator...
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