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    Emergency Cutoff switch necessary for gas furnace... (12 Posts)

  • Matt Matt @ 4:08 PM
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    Emergency Cutoff switch necessary for gas furnace...

    I just got my oil to gas conversion done and was wondering if a gas cut off switch is necessary.  My oil burner had one at the top of the stairs as well as one on the burner.  The plumber that did the conversion said i did not need one for the new gas furnace and that I only need the service switch attached to the burner now.

    I just want to know before I close up the walls and remove the old switch at the top of the stairs....

    Thanks!
    This post was edited by an admin on August 7, 2013 4:10 PM.
  • MarkS MarkS @ 8:20 PM
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    Necessary or not

    Necessary or not, if it was my house I'd keep the switch in the cellar stairwell. Did just that when we converted in the spring. It was a simple matter to tie in the existing switch and wiring into the new system wiring.
    Homeowner, Royersford PA | 1890 one-pipe steam system | 3009 sf | 3 floors | 14 radiators | Utica SFE5200S boiler
    Midco LNB-250 Modulating Gas Burner | EcoSteam modulating controls | 70 to 300 MBH |
    607 sf EDR connected load | Operating pressure: 0.5 oz/in2
    Four main runs (insulated) totaling 135 ft in length | All Gorton vents on mains & rads |
    A Steam Odyssey | Odyssey 2 | Odyssey 2014 | A Steam Enthusiast's Outdoor Reset Control
  • Steamhead Steamhead @ 10:25 PM
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    Good idea to keep the switch

    but I'd get a new plate that says "Gas Burner Emergency Switch". 
    "Reducing our country's energy consumption, one system at a time"

    Steam, Vapor & Hot-Water Heating Specialists

    Oil & Gas Burner Service

    Baltimore, MD (USA) and consulting anywhere.
  • kcopp kcopp @ 8:15 PM
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    I was under the...

    impression and inspectors (mechanical and fire) here in NH are making us take out that switch. kcopp
  • JeffM JeffM @ 8:51 AM
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    NH

    When I had the conversion done to my boiler last year, the Manchester NH inspector did mention that I wasn't supposed to have the cutoff switch upstairs with the gas, but went on to say that it's still good safety to have it and he wouldn't make me take it out (though I did anyway, as it was in the kitchen and the wife didn't want to see it).
  • Aaron_in_Maine Aaron_in_Maine @ 6:41 PM
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    No

    I was told it is against code to have a stair switch on gas equipment. Think about it you have a gas leak in basement come home after being away for weekend flip the switch at the top of the stairs and boom. I take them out and put a cover over the box.
  • BobC BobC @ 7:18 AM
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    gas detector?

    I'm surprised the code does not require a gas detector to be installed so a home owner could be alerted to the danger of a gas leak. Smoke detectors are required, why not gas detectors?

    Bob
    Smith G8-3 with EZ Gas @ 84,200 BTU, Single pipe steam

    Vaporstat with a 12oz cut-out and 4oz cut-in

    3PSI gauge
  • Gastech40 Gastech40 @ 8:32 PM
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    Natural gas detectors

    You will smell the gas long before the detector will go off
  • Steamhead Steamhead @ 8:41 PM
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    We've dealt with some inspectors

    who want a switch installed if one does not exist. We've never dealt with one who wanted one taken out. 
    "Reducing our country's energy consumption, one system at a time"

    Steam, Vapor & Hot-Water Heating Specialists

    Oil & Gas Burner Service

    Baltimore, MD (USA) and consulting anywhere.
  • Bob Harper Bob Harper @ 11:26 PM
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    emergency disconnect switch at CAZ entrance

    Required for liquid fuels but not gas. Good idea but not in IRC. Local codes may vary. Always ask the code official for a reference whether in model building codes or local ordinance. If not in any code, ordinance or standard then unenforceable.

    Combustible gas alarms not required by IRC. The typical action level is 20% of LEL, which is about 44,000ppm methane or 21,500 propane. Most humans can smell levels of a few ppm. However, to smell an LP leak, your nose would need to be on the floor like my beagle. Also, about 15% of the population are not sensitive to the odorants used with combustible gases. Then again is the phenomenon of "odor fade".
  • kcopp kcopp @ 2:02 PM
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    I believe...

    NFPA54... 9.7.4 is what they are referring to.....
    http://www.nh.gov/safety/divisions/firesafety/bulletins/documents/07_05_nfpa54.pdf
  • gennady gennady @ 11:28 PM
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    Switch

    Emergency switch should be installed on each entrance to the basement and at the door next to boiler.
    Gennady Tsakh

    Absolute Mechanical Co. Inc.
    www.AbsoluteMechanicalCoInc.com
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