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  1. #14
    Join Date
    Apr 2006
    Location
    Toronto
    Posts
    275
    they are wonderful, they do not only do free cooling but constantly replace stale air in a building.

    majority are not working because people have no clue on how they operate, so they just close off the dampers, jumper y1 to 2 and call it a day.

  2. #15
    Join Date
    Nov 2006
    Location
    Southeastern Pa
    Posts
    18,361
    Quote Originally Posted by jrmech View Post
    they are wonderful, they do not only do free cooling but constantly replace stale air in a building.

    majority are not working because people have no clue on how they operate, so they just close off the dampers, jumper y1 to 2 and call it a day.


    Bingo.



    .
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist

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  3. #16
    Join Date
    Nov 2006
    Location
    Southeastern Pa
    Posts
    18,361
    Quote Originally Posted by Cooked View Post
    If you're a service tech never stand by a big RTU with an open economizer and smoke a doobie. Especially when it's at a parole office. Many years ago a top tech I knew did just that. Busted! (and fired)
    That office must have looked like a Cheech and Chong movie....
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist

    AOP Forum Rules:







  4. #17
    Join Date
    Dec 2011
    Location
    Michigan
    Posts
    119
    Depends on the brand. If it's a a York I probably worked right for a year. Now if it's a Lennox I love them.

    Other than that they are used a lot here as a source of makeup air. So it's important to keep them working

    Sent from my amazing 4G device

  5. #18
    Join Date
    Apr 2012
    Location
    Paper Street Soap Company
    Posts
    2,304
    Quote Originally Posted by Cooked View Post
    If you're a service tech never stand by a big RTU with an open economizer and smoke a doobie. Especially when it's at a parole office. Many years ago a top tech I knew did just that. Busted! (and fired)
    We're a salty bunch aren't we ?

    It used to be worse....a lot worse

  6. #19
    Join Date
    Apr 2012
    Location
    Paper Street Soap Company
    Posts
    2,304
    Quote Originally Posted by jrmech View Post
    they are wonderful, they do not only do free cooling but constantly replace stale air in a building.

    majority are not working because people have no clue on how they operate, so they just close off the dampers, jumper y1 to 2 and call it a day.
    They are CLIMATE DEPENDENT.

    Honestly if you one in my neck of the woods you know someone got shafted and sold an economizer that they'll never use.

  7. #20
    Join Date
    Jun 2012
    Location
    CT
    Posts
    50
    Economizers are a great option if they are maintained. I usually find the screens plugged with dirt and the control boxes home to hornets or bees. Thats how i found out what a good bee killer coil cleaner is.

  8. #21
    Join Date
    Sep 2007
    Location
    NH
    Posts
    1,148
    They make us a lot of money. Those motors are EXPENSIVE!

  9. #22
    Join Date
    Nov 2006
    Location
    Southeastern Pa
    Posts
    18,361
    Quote Originally Posted by Dchappa21 View Post
    They make us a lot of money. Those motors are EXPENSIVE!

    I found two on a roof recently that were installed so when the motor actuator was energized, it tried to pull the already closed dampers "more closed."

    We'll work on that problem this fall, when they can really take advantage of the cool air.
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist

    AOP Forum Rules:







  10. #23
    Join Date
    May 2011
    Location
    Oklahoma
    Posts
    362
    I could go either way but I sure wish plumbers would take their vents higher when it's obvious what's going to sit on that curb next to it. Too often I have to stick a tall piece of PVC pipe over the little stub they left to keep the economizer from pulling in bathroom odors.

  11. #24
    Join Date
    Feb 2006
    Location
    USA
    Posts
    4,381
    Quote Originally Posted by matt1124 View Post
    I could go either way but I sure wish plumbers would take their vents higher when it's obvious what's going to sit on that curb next to it. Too often I have to stick a tall piece of PVC pipe over the little stub they left to keep the economizer from pulling in bathroom odors.
    Very true

  12. #25
    Join Date
    Apr 2012
    Location
    winnipeg
    Posts
    1,330
    100% of new calls on roof tops the economizers do not work... and 100% of the time customer will not repair due to cost..... makes sense to have an economizer in Winnipeg as 40 below gives you ample free cooling
    it was working.... played with it.... now its broke.... whats the going hourly rate for HVAC repair

  13. #26
    Join Date
    Feb 2004
    Location
    New Mexico
    Posts
    5,496
    Quote Originally Posted by Cooked View Post
    If you're a service tech never stand by a big RTU with an open economizer and smoke a doobie. Especially when it's at a parole office. Many years ago a top tech I knew did just that. Busted! (and fired)


    That's funny. I had a guy that smoked cigarettes and could not understand why I got upset when he'd pull the panels off a r/t unit and light up. I told him the smoke goes to the office and upsets tenets.
    After he quit smoking , he understood.
    The orginal controller by Honeywell was a problem. The sensor was horse hair or mylar and had a habit of failing in about a year. Pricy too. Glad to see solid state.
    Tracers work both ways.

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