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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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    4,097

    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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    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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    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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    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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    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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    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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    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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    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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    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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    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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    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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    1,166

    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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    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
    2
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    447

    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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