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Low Water cut off

Homestar Plummer
Homestar Plummer Member Posts: 2
in THE MAIN WALL
I'm installing a Buderus G-115 where is the best place to pipe the low water cut off?

Comments

  • Jamie_6
    Jamie_6 Member Posts: 710


    Anywhere above the top of the boiler! You just want to make sure you always have water in that bad boy!

    If you look @ the supply pipe coming out the top of the boiler you will see a small blue box. That's where I like to but them.

    To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"
  • EJW
    EJW Member Posts: 321
    Nice lookin job Jamie!

  • Homestar Plummer
    Homestar Plummer Member Posts: 2


    so it does not matter if it is on the supply or the return? Also, if any one feels so inclined could you explain how these things work?
  • Robert O'Connor_6
    Robert O'Connor_6 Member Posts: 299
    Me too

    I always put them in the supply riser right off the top of the boiler.


    Good looking work Jamie

    Regards

    Robert

    ME
  • Ed_13
    Ed_13 Member Posts: 164
    Boiler install

    That is a job to be proud of.

    Nice work.

    Regards,

    Ed Carey
  • marc
    marc Member Posts: 203
    lwco location

    above the boiler, with auto air vent, other wise there could be a vaccum holding water in pipe with lwco. we try to switch off boiler and pumps if possible to save the pumps also. they are supposed to be in direct contact with the boiler, ( no valves to isolate the lwco from boiler ) and also testible without draining system. marc
  • Roger_5
    Roger_5 Member Posts: 12
    LWCO

    The Safeguard 170 is the most widely used control. They have a 24v transformer that completes the circuit to the coil of the relay when water hits the probe. You have to use the factory jumper from H to P1 or jump it yourself as the contacts are from P1 to P2 in the relay. This will send line volatge to the boiler control. If you use the Logitech control you need to connect terminal 17 to P1 and 18 to P2 and forget about the jumper. (Look at the logitech schematic for details)
  • Robert O'Connor_6
    Robert O'Connor_6 Member Posts: 299
    It's regional

    Roger, Lots of McDonald Miller LWCO and Taco used on water boilers

    I see your in Maine and the OEM 170 is prevalent here.

    Regards

    Robert

    ME
  • Roger_5
    Roger_5 Member Posts: 12
    Habits

    I guess it goes with the normal supply chain the M&M is a good control and wires very similar to the Safegaurd. I have used both and have no real prefrence.
  • Robert O'Connor_6
    Robert O'Connor_6 Member Posts: 299
    Habits

    I find the Safeguard OEM 170 Sv to be completely reliable and I would use no other!!

    All the best

    Robert

    ME
  • jim lockard
    jim lockard Member Posts: 1,059
    The best

    Lo water control is one that works as for brands thats up to you.
  • tom mahon_5
    tom mahon_5 Member Posts: 5
    I PREFER

    Hydrolevel -- M&M requires that you clean the probe every year, at least that's what it says in the install instructions. Get real .. The new Hydrolevel 1150 can mount right in the supply header -line or low volt --one unit -- status lights -- check it out !
  • Bill Montgomery
    Bill Montgomery Member Posts: 1
    Model 170SV

    Robert: We certainly appreciate your business in the State of Maine. We weren't always the most popular cut-off. When the whole code issue started in Maine in 1978 (a guy was killed in Vassleboro)we were one of a few cut-offs the Maine installers tried. We developed a lot of things on that control with input from Maine contractors - the short version (SV) probe an extra knock-out on top of the control and even modified our packaging based on input from Maine. Maine contractors know their heating and I think the acceptance of the 170SV has been something we earned by working with you. Thanks for using our product. Go Sox!
  • Ed_13
    Ed_13 Member Posts: 164
    Hydrolevel

    Tom,

    Depending on which Hydrolevel you use, you also have to remove and clean the probe yearly. The 24 and 170 is every 5 years, but the 400, 450 and many others on their line require every year. See the link attached.

    And honestly for the little time it takes to remove and clean a probe, it is worth it to do every year vs the alternative.


    Regards,

    Ed Carey

    http://www.hydrolevel.com/pages/instructions.html
  • Ed_13
    Ed_13 Member Posts: 164
    Hydrolevel

    Tom,

    Depending on which Hydrolevel you use, you also have to remove and clean the probe yearly. The 24, 170 and 1100 are every 5 years, but the 400, 450 and many others of their line require every year. See the link attached.

    And honestly for the little time it takes to remove and clean a probe, it is worth it to do every year vs the alternative.


    Regards,

    Ed Carey

    http://www.hydrolevel.com/pages/instructions.html
  • Ed_13
    Ed_13 Member Posts: 164
    Hydrolevel

    Tom,

    Depending on which Hydrolevel you use, you also have to remove and clean the probe yearly. The 24, 170 and 1100 are every 5 years, but the 400, 450 and many others of their line require every year. See the link attached.

    And honestly IMHO, for the little time it takes to remove and clean a probe, it is worth it to do every year vs the alternative.


    Regards,

    Ed Carey

    http://www.hydrolevel.com/pages/instructions.html
  • Wayne_10
    Wayne_10 Member Posts: 11
    Low water cut off

    Maine says the low water cut off needs to be as close as it can to the crownsheet of the boiler. thank god for that ran in to a few in Newhampshire that you needed a step ladder to work on them. Thats always fun to do at 1 am in the morning :(
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