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Manual Reset LWCO and Weil-McLain EGH Boilers

JohnNY
JohnNY Member Posts: 2,959
Hello,
Are any of you guys including secondary, manual reset LWCOs on your EG or EGH boilers?
I wish they would add a well-placed ¾" tapping for it.
Alternatively, I would like to be able to add a MR switch to the McDonell-Miller #61.
That is all.
-JC
Contact John "JohnNY" Cataneo, Master Plumber for Consulting Work
Or for plumbing in NYC or in NJ.

Or take his class.

Comments

  • jhewings
    jhewings Member Posts: 86
    My EGH came with a Manual rest LWCO (M&M 802) which was installed in the recommended tapping. I added a #67 (auto) using the usual sightglass tappings. This resulted in the manual reset LWCO was higher than the auto rest #67. The LWCOs were upside down. I ended up buying an auto reset 802 and a manual reset switch for the 67. It's only money!
    EdTheHeaterMan
  • JohnNY
    JohnNY Member Posts: 2,959
    Evidently it doesn't matter anymore because the EGH is officially discontinued. Starting 2023, Weil-McLain will be downfiring some of the smaller LGBs to meet the larger residential market demand. FML
    Contact John "JohnNY" Cataneo, Master Plumber for Consulting Work
    Or for plumbing in NYC or in NJ.

    Or take his class.
  • Steamhead
    Steamhead Member Posts: 15,429
    The EG/EGH series (and the SGO series too) still has 1/2" try-cock tappings next to the sight glass. We use Hydrolevel 1/2" LWCO probes in these to add the second LWCO.
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
  • JohnNY
    JohnNY Member Posts: 2,959
    Steamhead said:

    The EG/EGH series (and the SGO series too) still has 1/2" try-cock tappings next to the sight glass. We use Hydrolevel 1/2" LWCO probes in these to add the second LWCO.

    Looking through their catalog, I don't see a model with a manual reset. Can that be? I'll give them a call.
    Contact John "JohnNY" Cataneo, Master Plumber for Consulting Work
    Or for plumbing in NYC or in NJ.

    Or take his class.
    SteamingatMohawk
  • SteamingatMohawk
    SteamingatMohawk Member Posts: 743
    Does anyone have any credible information on how/if a secondary LWCO actually comes into play? What have been the circumstances that caused it to do its job?
  • Tim_D
    Tim_D Member Posts: 72
    You will still be able to get "replacement parts" for EGH.
  • EdTheHeaterMan
    EdTheHeaterMan Member Posts: 3,336
    edited May 20

    Does anyone have any credible information on how/if a secondary LWCO actually comes into play? What have been the circumstances that caused it to do its job?

    If the automatic LWCO is properly maintained then you will never have a problem where the manual reset LWCO is needed. And since every steam boiler owner spares no expense in proper maintenance on their steam equipment, then there is no need for them. But the exception to that rule about every steam boiler owner is greater that you might think. What if a building owner has an automatic LWCO like the float type, and perhaps they neglected to flush the float bowl weekly for a couple of months. that float bowl might get some buildup in there and continue to allow the burner to fire even with the low water condition. They might be glad to have a no heat call with a manual reset LWCO and not have a no heat call with a cracked boiler section.



    And if you have two electronic LWCO devices, the one that gets the most use or cycles will fail before the one that hardly ever cycles. There have been rare occasions where a perfectly good LWCO with a perfectly good probe, has an electronic component fail. I'm think that both of them failing at the same time is slightly more rare. The one that cycles regularly as an operating control that may also be connected to an auto water feed valve would fail first. But I only had about 10 to 12 steamers in my customer base and the one where the manual reset LWCO did its job was on a church with a float type auto LWCO. The church elder that took care of the weekly flushing of the LWCO was hospitalized and forgot to have someone else do his weekly boiler thing.

    One Sunday morning I got the call and found the problem quite easily. Flushed the LWCO and lots of mud came out of the blow off valve. The following week I met with another church elder and we opened up the LWCO and thoroughly cleaned the body of the float chamber. They did not have a problem with the manual reset LWCO ever again.

    Mr. Ed

    Edward Young
    Retired HVAC Contractor from So. Jersey.
    Services first oil burner at age 16
    P/T trainer for EH-CC.org
  • The Steam Whisperer
    The Steam Whisperer Member Posts: 986
    Don't forget to add all the defective/Poorly built float low water cut off that are coming out of McDonnell and Miller. We've had new or 2 year old commercial boiler where the float controls were not working properly... one was sticking in the up position, so it failed dangerous...units where nearly brand new clean.
    The secondary Hydrolevel electronic low water cut off saved the boiler.
    To learn more about this professional, click here to visit their ad in Find A Contractor.
    EdTheHeaterMan
  • Steamhead
    Steamhead Member Posts: 15,429
    JohnNY said:

    Steamhead said:

    The EG/EGH series (and the SGO series too) still has 1/2" try-cock tappings next to the sight glass. We use Hydrolevel 1/2" LWCO probes in these to add the second LWCO.

    Looking through their catalog, I don't see a model with a manual reset. Can that be? I'll give them a call.
    You have to supply and install it. Unless something has changed recently, W-M has not embraced probe-type LWCOS the way they should. The LGB series, for example, lacks suitable probe LWCO tappings. But the 80 series has a try-cock tapping that will accommodate a probe.

    Given the way people don't maintain float-type LWCOs, it makes no sense to use them anymore.
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting