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  1. congrats........:cheers: welcome to the club I...

    congrats........:cheers: welcome to the club I wrote a few years ago and got 76% as long as you get over 70% its good enough, employers wont to know if you have CoQ not what mark you got to get your...
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    Friends of mine used too work at one of the home...

    Friends of mine used too work at one of the home depots up here in Toronto and when he walked in poeple walked out. Walked around the store like he owned it, contrators had no respect for him...
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    Compressors only pump vapor it doesn't care what...

    Compressors only pump vapor it doesn't care what the refrigerent is. This hack makes are industry look bad.
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    This is a hot and chilled water AHU has mix air...

    This is a hot and chilled water AHU has mix air temp control with only one output for all dampers but that is going to change, one output for fresh and return dampers and one output for exhaust...
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    Thanks for the response, it's a 2 story with...

    Thanks for the response, it's a 2 story with about 40 vav's trying to keep space slightly positive, depending on time of year interier/exterier door's stay slightly open and as summer is approaching...
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    Building Static pressure

    I need to install a differential static pressure senser to control building static 1st part of my question, does the high pressure pitot tube go to the outside and low pressure pitot goes on the...
  7. WINA ductless installation manual

    I have a customer that has a used ductless unit, make-WINIA, model WSA121 that he would like to have installed at the cottage this spring. I'm not one to install used units but he is a good...
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    4,679

    Find out the spring range the best and only way...

    Find out the spring range the best and only way to trurly calibrate your device.I just calibrated a valve with a spring range of 4-8psi. 7psi is not even close to calibration.
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    My wife works for pharmaceutical company and she...

    My wife works for pharmaceutical company and she read this and she's still laughing...... ::DD:very funny.
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    341

    Happy New years from your friends from Toronto,...

    Happy New years from your friends from Toronto, be safe and have fun!:couch
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    It's been almost five years for me and it took me...

    It's been almost five years for me and it took me six months before I started feeling better. I feel great now, hang in there don't give up. BTW I was a 2 pack a day smoker
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    889

    binary or digital

    What is the difference between the two, I always refere to an on/off output as a DO but I also notice other tech's refer to it as a BO is there a difference?
    Any info would be great.
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    616

    Is this for all RTD's or just for the siemen...

    Is this for all RTD's or just for the siemen sensors, if so that means when I do see a # of the ohm's stampted on a sensor I should assume that is at 32F.:toetap:
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    616

    Siemens outside air sensor

    chiller would not start, outside air sonsor reading -100f on the BAS locate sensor check ohm reading and it read 1178 ohms contacted siemens parts to find what the sensor is rated for and it was ...
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    714

    Chilled water valves are and should be N/C fail...

    Chilled water valves are and should be N/C fail safe, you never want to load the chiller just because you lost your air compressor control or a fan coil or AHU is down. Hot water valves are and...
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    4
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    6,219

    R22 Walk-in cooler

    I've been working with HVAC for about 15yrs always commercial but my company changed owners I did very little true refrigeration work. I got a service call for a walk-in cooler not cooling. Found...
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    734

    The greatest gift you can give your parants are...

    The greatest gift you can give your parants are Grandchildern, I have three and one more on the way (July/10) My parents love my kids more than anything in this world. Congrats on your new...
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    4,948

    I wrote Jan-06 for the second time I found the...

    I wrote Jan-06 for the second time I found the test to be all over the place, heating,cooling,refrigeration, ice rinks, controls, remember your fractions and SH of water. Just relax take all time...
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    1,633

    Wait intill most people go home at night and take...

    Wait intill most people go home at night and take a walk and listen very carefully. A little patience and coffee should lead you in the right direction.
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    1,633

    w

    w
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    As Klove said on the output of the VFD or at the...

    As Klove said on the output of the VFD or at the starter.
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    1,268

    Thanks to all that responded, What I found was a...

    Thanks to all that responded, What I found was a shorted N2 bus at a DX9100 on a rooftop unit. What I did was remove all N2 conections at a device and have someone sit in front of the OWS a see if it...
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    1,268

    N2 communication offline

    I service building that has about 60 feild devices, unt's,vav-101 and DX9100,
    Supervisery controller is a NCM 350. All of the network is offline, No work has been done in the building for a while....
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    Binary/Digital I/O

    Is there a difference between the two. Binary outputs are on/off control . Binary inputs are more for status on/off. I come across Digital I/O and they function the same way. Does it really make a...
  25. Thread: R2?

    by westendmechanical
    Replies
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    504

    R2?

    I've got a niagara tridium BAS in one of the building I service can someone explain what r2 means, I thought it just means the lon bus.
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    695

    I was hoping you would answer Freedy-b,The...

    I was hoping you would answer Freedy-b,The graphics are M3 if I'm not mistaken. Have you serviced any Nexsys BAS with lonworks. I heard if there are more than a hand full of these nexsys BAS thats...
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    3
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    695

    nexsys/lonworks info

    I service a school with the frontend to be a nexsys/ lonworks BAS installed 5years ago. Field devices, AHU have FSC controlers and classrooms have VMA controlers. Frontend always loses...
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    1,384

    0-10v and 2-10v

    What is the differance between the two? I was told there is realy no difference. I'm thinking, if there is a device that is 2-10v anything under 2-volts the device should not move. If the device is...
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    Thanks for all the info guys, this has been a...

    Thanks for all the info guys, this has been a great help
  30. Replies
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    831

    Trane Unit ventilator

    I'm working on a Trane U/V, 1 year old. Too hot, found the valve actuator fully open the only info I've got on this actuator is that it is a 24v, 3 point modulating actuator. I'm not familar with...
  31. Replies
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    1,028

    I had the exact same situation, with the building...

    I had the exact same situation, with the building automation add a timer to the OAD, when AHU is in occupied mode dampers will not open for 10 mins (adjustable)Make sure the low limit is always...
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    802

    Proof of certification to buy LON VERSION ????...

    Proof of certification to buy LON VERSION ???? Any more info would be great .Thanks for the link.
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    802

    JCI-NCE info

    A custurmer of mine is requesting a JCI- NCE controller for there boiler plant. Can this controller be picked up from the WEB. Also does this controller come with graphics and can it talk N2, LON or...
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    Type- K or Type -J

    I need some infor on the difference between Type K and Type J themocouples on my multimeter?
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    1,630

    Thanks Chris

    Thanks Chris
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    Chris I added my e-mail to my profile if you can...

    Chris I added my e-mail to my profile if you can send me the PDF'S it would be great!
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    Is there any other info I need for this...

    Is there any other info I need for this controller, I heard this came with a one year upgrade from the time of purchase. Graphics are good, can talk N2-Bacnet-Lon
    Any info would be mch appreciated.
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    1,630

    FX-40 Info

    Before I make my pitch for a fx-40 controller to replace any NCM 350 my customer has, I want to know a few more details.

    (1) Johnson contriols has it's name on it but who manufactures it.
    ...
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    Thanks for your response Freddy-b Can you give...

    Thanks for your response Freddy-b
    Can you give me more info why i would need enterprise connectivity and workbench software with the FX-40.

    Why BacNet? Customer wants to operate BAS in remote...
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    FX-40 or NAE

    I have customer that has a NCM 350, he is thinking of upgrading his system to BAC-NET with a FX-40 or NAE.

    P.S can we buy FX40 direct from JCL I'm under the impression we can't
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    First indication would be are there any Air...

    First indication would be are there any Air Handling Units with V.F.Ds. If so could be V.A.V. Also Depends on the season you are in, cooling season with V.F.Ds always V.A.Vs. I've come acoss with...
  42. I've got some questions for the IP exam. If...

    I've got some questions for the IP exam. If anybody would like to trade questions for the IP exam e-mail >>>edit... please put e-mail in profile, see this link for further details.
    ...
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    983

    I've got a exam at the end of the week. The king...

    I've got a exam at the end of the week.
    The king valve I'm refeering to is on the outlet of the receiver
    thanks.
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    983

    discharge valve and king valve

    discharge valve and king valve
  45. Replies
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    983

    which two vales must be front seated when...

    which two vales must be front seated when repairing a condenser coil
  46. Replies
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    610

    which two valves need to be front seated when...

    which two valves need to be front seated when repairing the evaporator coils
  47. Replies
    4
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    716

    which two valves should be front seated when...

    which two valves should be front seated when replacing a TXV
  48. I got some questions from I.P exam can you put me...

    I got some questions from I.P exam can you put me on your e-mail list so we can trade. >>>edit... please put e-mail in profile, see this link for further details.
    ...
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