Help/questions about my boiler heating system

Discussion in 'General Plumbing Help' started by H2oheartny3, Nov 11, 2019.

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  1. Nov 11, 2019 #1

    H2oheartny3

    H2oheartny3

    H2oheartny3

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    I have a hot water heating system(radiators) in my home. I have some questions about maintenance/changes that maybe someone can help. House is three floors with one rad on 3rd, 3 rads on 2nd, and 5 rads on the 1st. boiler is in the basement. Utica boiler model number 150AGB. It’s has a plain steel tank mounted in the ceiling of the basement. I’ve included pics of the boiler and all it’s valves

    1 - I want to make sure it has all of the correct valves. From the pics, do I have the correct valves? And the existing ones are old gate valves(water spigot like). Good idea to replace them?

    2 - plain steel tank... I’m thinking it may be a good idea to switch to an expansion tank? If so how do I know how to size it correctly, and is it ok to oversize?

    3 - drain/flush - what are the proper steps to do so? I also think I have air trapped in the system. One of the radiators clangs every once and a while. And also the third floor radiator will eventually not get hot water up to it anymore... is this evaporation? There are no signs of any leaks anywhere. Is the steel tank filling up with too much water? When I do drain/flush out the system, how do I ensure there is no more air in piping?

    thanks for your info in advance
     

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  2. Nov 11, 2019 #2

    frodo

    frodo

    frodo

    Just call me Macgyver Professional Supporting Member

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    YES,,it is a good idea to get rid of gate valves and install FULL PORT ball valves
    little tip..the valve handle, points the direction of flow,, on a ball valve

    drain and flush
    turn off system
    open lowest drain valve in the system
    on each radiator, their should be a little brass fitting with a screwdriver slot
    that is a bleeder valve, unscrew the slotted head
    it should start sucking air as the system drains

    to flush
    hook a hose up to each radiator,,,run hose out the window
    close the drain
    open the fill valve
    fill the system with water
    let the water run through the system out the windows

    turn off flush on 1st floor and 2nd
    continue 3rd
    run till all you see is water no air
    remove hoses
    turn on pump bleed air t radiators
    wait a few hours. bleed air..wait over night bleed air
     
  3. Nov 11, 2019 #3

    H2oheartny3

    H2oheartny3

    H2oheartny3

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    Thanks. Any ideas on the steel compression tank?
     
  4. Nov 11, 2019 #4

    H2oheartny3

    H2oheartny3

    H2oheartny3

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    Also I don’t see any hose hookups on my radiators, just the bleed valves
     

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