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  1. #1
    Join Date
    Aug 2010
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    3,721

    Anyone seen refrigerant pressure switch integrated to security system?

    Anyone seen a pressure switch installed near the indoor coil to signal security system of refrigerant to detect that condenser got jacked?

    Obvious alarm wire to condensing unit would be all too easy to be pinched to short or cut to open the circuit, but pressure switch located inside that picks up sudden loss of charge would be much harder for the scumbag to defeat.

    Seems to me that condensing units are getting jacked even with fences or cages, so rigging up to setup off silent alarm on pressure loss seems like it would be useful.

  2. #2
    Join Date
    Mar 2008
    Location
    NC
    Posts
    1,463
    Wouldn't a good leak create nuisance alarms? We thought about doing the pressure switch thing, but went with magnetic switches screwed into the panel tied into the burglar system.

  3. #3
    Join Date
    Apr 2012
    Location
    Paper Street Soap Company
    Posts
    2,304
    We've been rigging them up with press switches tied into alarms for a few years now.

  4. #4
    Join Date
    Aug 2006
    Posts
    2,609
    Got a loss of charge switch on my home unit, it's wired thru the thermostat wiring extra leads. You have to really look at the unit to tell it's there. Also an EOL Resistor under shrink tube, takes care of cutting or jumping out the alarm system. There is also a reed switch on the cover, a power company contractor set that off, with little explanation to what they were doing. It was very tempting to have the idiot arrested.

  5. #5
    Join Date
    Aug 2010
    Posts
    3,721
    That works too, but rigging up something only you can understand presents subsequent service problems.

    Pressure switch marked "alarm system" and located INDOORS provides clear indication of what it does while still providing good security since scum bag would have to get inside first and past the motion detector alarm or door pry sensor in your garage.

  6. #6
    Join Date
    Jun 2012
    Location
    Pensacola Florida
    Posts
    49
    Ive seen them on suction lines in office buildings with stickers on outdoor units.

  7. #7
    Join Date
    Dec 2003
    Location
    Citrus County, Florida
    Posts
    1,627
    There is a company that makes them with different resistors in them for different alarm systems.
    Doug

  8. #8
    Join Date
    Oct 2004
    Location
    Texas
    Posts
    1,174
    So the security switch is to let someone know the condensing unit is being stolen. I suppose if someone can get there in time to stop or catch the thief then fine, but other wise why spend money on something you will find out soon enough with the same result of not catching the thief. Just thinking it through, maybe it will hit me.
    Saddle Up!

  9. #9
    Join Date
    Jan 2001
    Posts
    8,268
    I set the burgler alarm off at work the other morning and had to wait 20 minutes for the police to respond.

    20 minutes...more than enough time to load a condenser or two and be gone.

    What Id like to see commercial folks do is set a fake condenser...... a real one.... but isolate it from the ground on a pad with some of those plastic feet. Make it look like an actual installation but have everything isolated from the ground.....

    Run a wire to the condenser and bolt it to the body....say something like a number 4 and connect it to a 100 amp breaker inside....

    Run a hose out around the unit with some holes poked in it and turn the water on just enough to keep the ground nice and soaked....

    Then wait....lol

    Thinning the herd......one dumba** at a time.

    Oh yes.... put some sort of camera out there so you can post these idiots killing themselves on you tube.

  10. #10
    Join Date
    Aug 2006
    Posts
    2,609
    Quote Originally Posted by ICanHas View Post
    That works too, but rigging up something only you can understand presents subsequent service problems.

    Pressure switch marked "alarm system" and located INDOORS provides clear indication of what it does while still providing good security since scum bag would have to get inside first and past the motion detector alarm or door pry sensor in your garage.
    LOL, no one one but one person has worked on my home system in 40 years, and they figured it right away since they were pro.

    Some of the units at work I'm tempted to set bolt cutters and hack saws around them, as that's the only way I'd get rid of the junk, owned by the state gov.

  11. #11
    Join Date
    Sep 2008
    Location
    Western PA
    Posts
    25,946
    Quote Originally Posted by madhat View Post

    Some of the units at work I'm tempted to set bolt cutters and hack saws around them, as that's the only way I'd get rid of the junk, owned by the state gov.
    Now there is an idea with some merit....


  12. #12
    Join Date
    Apr 2003
    Location
    Maple Grove, MN
    Posts
    1,431
    .

  13. #13
    Join Date
    Apr 2003
    Location
    Maple Grove, MN
    Posts
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