Results 1 to 11 of 11
  1. #1
    Join Date
    Aug 2014
    Location
    new york
    Posts
    182
    Post Likes

    need wiring help

    hello techs does anyone has a wiring diagram of a hvac unit wired in to a alarm system basic wiring method that would shut down system & cause alarm,also need basic to moderate type of wiring diagram of a hvac wired to a building automation system,need to revise it will be having a knowlegment test just want to revise it,any information will help

  2. #2
    Join Date
    Mar 2013
    Location
    Billington Heights, NY
    Posts
    14,599
    Post Likes
    can you turn this into a complete paragraph with sentences, please?
    Experience - knowing when to get the hell out of the way and plug your ears. "Don't be a sissy. Turn it on!"

    Poodle Head Mikey - "the world is well populated with the unknowing and the uncaring and the stupid."

    Jtrammel - "I’m going to sell hvac systems derp derp derp"
    BBeerme - "every time he opens his mouth, he reminds me of a cow without the fart bag."

  3. Likes kdean1, jbmoore5 liked this post
  4. #3
    Join Date
    Jun 2014
    Location
    Dover, DE
    Posts
    9,736
    Post Likes
    The BAS is a hugely loaded question. That all depends on what protocol it is, how your wiring in to it, and so on.
    For the alarm, basic alarms can be done via BAS. Is this a fire alarm?
    “I haven’t failed. I’ve just found 10,000 ways that won’t work.” - Thomas Edison

    “It’s not whether you get knocked down, it’s whether you get up.” - Vince Lombardi

    "In this house we obey the laws of thermodynamics" - Homer Simpson

  5. #4
    Join Date
    Dec 2013
    Location
    London
    Posts
    299
    Post Likes
    Quote Originally Posted by nytech28 View Post
    hello techs does anyone has a wiring diagram of a hvac unit wired in to a alarm system basic wiring method that would shut down system & cause alarm,also need basic to moderate type of wiring diagram of a hvac wired to a building automation system,need to revise it will be having a knowlegment test just want to revise it,any information will help
    You what???

  6. #5
    Join Date
    Nov 2006
    Location
    Athens, Ohio
    Posts
    5,373
    Post Likes
    Quote Originally Posted by HVAC_Marc View Post
    can you turn this into a complete paragraph with sentences, please?
    Like with capitals and punctuation and complete thoughts? That's so 90's.
    AOP Rules: Rules For Equipment Owners.

    Free online load calculator: http://www.loadcalc.net/


    There = not here. Their = possessive pronoun. They're = they are
    It's = contraction of it is. Its = the possessive form of it
    Too = also. To = expressing motion. Two = 2
    Then = after that, next. Than = indicates a comparison.
    Questions should end with a question mark "?" Statements end with a period "."

  7. Likes DaveCR, HVAC_Marc, BALloyd liked this post
  8. #6
    Join Date
    Nov 2016
    Posts
    45
    Post Likes
    To the OP:
    These guys are tough but there is a reason. They are pros. That doesn't come for free. Make complete sentences and be respectful.

  9. Likes stanbyyourword liked this post
  10. #7
    Join Date
    Aug 2014
    Location
    new york
    Posts
    182
    Post Likes
    Thread Starter
    Quote Originally Posted by rider77 View Post
    The BAS is a hugely loaded question. That all depends on what protocol it is, how your wiring in to it, and so on.
    For the alarm, basic alarms can be done via BAS. Is this a fire alarm?
    no,to some type of panel that will cause alarm when Ac unit safety controls open

  11. #8
    Join Date
    Jun 2014
    Location
    Dover, DE
    Posts
    9,736
    Post Likes
    Umbrella answer but that can be done via BAS.
    “I haven’t failed. I’ve just found 10,000 ways that won’t work.” - Thomas Edison

    “It’s not whether you get knocked down, it’s whether you get up.” - Vince Lombardi

    "In this house we obey the laws of thermodynamics" - Homer Simpson

  12. #9
    Join Date
    Aug 2011
    Location
    Southeast PA
    Posts
    45
    Post Likes
    Quote Originally Posted by nytech28 View Post
    no,to some type of panel that will cause alarm when Ac unit safety controls open
    I was going to post a smart ass comment, but instead I'll offer this low-effort mspaint sketch. You want the safety devices to be in series with a multi-pole relay. The separate NO/NC contacts on the relay can then be used for interlock of the equipment, indication to the BAS, and indication to the alarm system, or whatever else is needed, provided your relay has enough poles.

    Good luck

    https://imgur.com/a/mwVZv

  13. #10
    Join Date
    Aug 2014
    Location
    new york
    Posts
    182
    Post Likes
    Thread Starter
    thank you for the info

  14. #11
    Join Date
    Jun 2012
    Location
    Northern NV
    Posts
    1,460
    Post Likes
    Very simple solution is a relay coil in parallel with the NC limit switch. Switch opens and places potential across the coil. Actuates a switch closure which can light up a signal or a buzzer. Not automation, but quite simple annunciation circuit.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Related Forums

Plumbing Talks | Contractor MagazineThe place where Electrical professionals meet.