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my reservoir tanks

was likely a storage tank for domestic hot water. The Arco would have had a side-arm heater to keep it hot.

Nice piping job. Since the tanks are under system pressure, would safety valves be required by Code? And what's that big wheel above the tank on the left?

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Comments

  • nicholas bonham-carternicholas bonham-carter Posts: 5,569Member ✭✭✭
    my reservoir tanks

    I put 2 old 15 gal. expansion tanks in my 1-pipe system. Their horizontal centerline is 1.5 in. below the boiler waterline, measured from the floor, so as to best use the limited band of extra water that can be used by the boiler.

    The top of each tank is connected with a 1 in pipe from a tee at the top of the equalizer, to give system pressure to the surface of the tank waterline.

    The bottom of each is piped with a .75 in pipe swing joint to the wet return, so i can adjust the height if needed.

    Each tank has .75 in. vertical nipples welded to the outer edge, and these have threaded rods running down to the floor. they are thus adjustable for height, if needed.

    This extra water supply will compensate for that time the burner cuts out on pressure, and the steam bubbles collapse, leaving the boiler low on water for a few minutes. the advantage over a pumped system is that it cannot overfill the boiler.

    now it seems to work pretty well. the system is a peerless 211a 1,050,000 btu. . many thanks to gerry gill for showing pix of one he did recently, so i had enough faith in this method of water compensation to go ahead with the project.

    i also included pictures of the old coal-burning arco [cracked and replaced in 1952] with a tank which may have served the same purpose!
    --nbc
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  • Mark CustisMark Custis Posts: 539Member
    Safety valves

    If I am seeing this correctly the tanks are part of the steam system. I like being safe so I vote yes.

    If they are DHW then NBC wears orange or black underwear.

    LOL
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  • gerry gillgerry gill Posts: 2,404Member ✭✭✭
    looks good...

    should work fine..we didn't put any reliefs on ours as the tank didn't ''produce'' pressure and was just a passive reservoir..we had two asme inspections and neither asked for it..but it would be easy enough to add should someone someday ask for it..personally i see no need for it.

    To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"
    gwgillplumbingandheating.com

    Serving Cleveland's eastern suburbs from Cleveland Heights down to Cuyahoga Falls.

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  • Mark CustisMark Custis Posts: 539Member
    Driving to Bedford

    is no longer on this ex-Havsco tech.

    Gerry that was the point I thought I was trying to make that the tanks are not producing pressure.

    I feel better with your explanation.
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  • nicholas bonham-carternicholas bonham-carter Posts: 5,569Member ✭✭✭
    safety valves?

    when i set these up, i thought that check valves would keep the vacuum at bay, but then i reversed my thoughts and capped them. i presume that is what led to the relief valve question-there are none.

    i think this method should be considered by all who wish to "go with gravity", whenever they have a condensate lag problem.

    the large valve wheel [a gift from the local installer of the peerless, jay rybin] is for decoration only.thanks for the compliments--nbc
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  • gerry gillgerry gill Posts: 2,404Member ✭✭✭
    gwgillplumbingandheating.com

    Serving Cleveland's eastern suburbs from Cleveland Heights down to Cuyahoga Falls.

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  • Mark EathertonMark Eatherton Posts: 4,884Member ✭✭✭
    Nice \"Range Tank\" installation.

    My old friend, Matt Carr refers to that as a "Range Tank", because it gives the system some "Range" to work with before it calls on the make up water, and causes a flood on shut down. Typically required when replacing an old, large volume steam boiler with a newer, low volume steam boiler.

    Nice work. Looks like a LOT of forethought went into that installation.

    ME
    It's not so much a case of "You got what you paid for", as it is a matter of "You DIDN'T get what you DIDN'T pay for, and you're NOT going to get what you thought you were in the way of comfort". Borrowed from Heatboy.
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  • Mark CustisMark Custis Posts: 539Member
    This stuff

    Strongsville and Valley City.
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  • Mark CustisMark Custis Posts: 539Member
    This stuff

    Strongsville and Valley City.
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  • TimcoTimco Posts: 2,738Member ✭✭✭


    Can you post a pic of the top of the tanks piping? I see how they tie in low, but where do the pipes tie in after leaving the tank / sight glass on top? Really cool job.

    Tim
    Working on steam and hot-water systems isn't rocket science....it's actually much harder.
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  • Mark CustisMark Custis Posts: 539Member
    After Havsco

    I bounced around then hung out our own shingle. We do outside the box stuff out west of the Rock and Roll Hall of Fame.
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  • nicholas bonham-carternicholas bonham-carter Posts: 5,569Member ✭✭✭
    tanks piping

    i don't know if these are any better than the early pix.

    basically the connection to the pressure side was cut into the equaliser with a "tee", as high as possible above the waterline [several in.]. from the tee, a street elbow connects to a 1 in. vertical pipe running up to ceiling level, and over to the wall next to the tanks. then runs down, and tees off to the topside of the tanks.

    therefore the tank sees the same pressure as the boiler. also the waterline in the tanks are the same height as in the boiler.

    the bottom of the tanks are piped into the wet return with 3/4in. pipe. i had put check valves in various places, but now they have been taken out of the equation. if i would do it over i would do 1 in. connections to the return.

    since you are doing new headers, you will have an easier point of connection, than i did. i did find out that if you never throw away any of the extra nipples etc. that come with m/m 67 lwco's you can make the surge collumns for the gauge cocks the right length with the leftovers!--nbc

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  • Very nice setup

    there Nicholas . Was the system going into a low water situation often , before you installed the tanks ? Is the boiler sized right for the load of the building ?

    I'm curious because we're starting a big steamer job soon , in a church . The old system had 2 huge Mills boilers and we're replacing it with one Burnham . It's sized to the load but spec'ed with a makeup tank . The powers that be feel the new boiler will cut out on low water even though it's sized right .
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  • nicholas bonham-carternicholas bonham-carter Posts: 5,569Member ✭✭✭
    frequent low water episodes

    just about every time the burner cut out at 12 oz. the waterline would disappear below the sight glass for a couple of minutes. it only seemed as if i was a couple of gallons short. these tanks seem to do the trick as they duplicate the above water pressure, and waterline height of the boiler itself.

    most modern boilers have a thin crossection at the waterline area and so being a couple of gallons short makes more difference than it would well below that height.

    what you could do is to leave provision [connections to wet return, and to steam main, or equaliser] as i did for this type of setup, and if your boiler runs short then you can easily add it later.

    i don't like any sort of auto-fill [over-fill], as i had problems with one in another bldg. years ago.

    gravity for ever, for me!--nbc
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  • gerry gillgerry gill Posts: 2,404Member ✭✭✭
    gwgillplumbingandheating.com

    Serving Cleveland's eastern suburbs from Cleveland Heights down to Cuyahoga Falls.

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  • Mark CustisMark Custis Posts: 539Member
    Here is one

    This is in Strongsville.
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  • gerry gillgerry gill Posts: 2,404Member ✭✭✭
    gwgillplumbingandheating.com

    Serving Cleveland's eastern suburbs from Cleveland Heights down to Cuyahoga Falls.

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  • Mark CustisMark Custis Posts: 539Member
    You have mail

    I will be doing real work, not design on 12/31.

    Thanks for the look, Gerry.

    Mark
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  • nicholas bonham-carternicholas bonham-carter Posts: 5,569Member ✭✭✭
    Reservoir tank

    Here is my old thread for my tank:--NBC



    http://www.heatinghelp.com/forum-thread/123380/my-reservoir-tanks



    And there is probably more with a search for reservoir tank.
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