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heating system

  • 26-12-2010 5:03pm
    #1
    M cebee
    Closed Accounts Posts: 4,431 ✭✭✭


    hey-can someone help explain my oil heating system as i find it strange
    it's a 3-bed semi with oil boiler in shed

    -there's a 1/2" copper feed from the small header tank to the top of heating coil on indirect cylinder(i asume this is the feed to system)


    -there's a 1" tee into the flow pipe close to boiler (i assume this is the expansion)

    yet there's no 1" expansion pipe into top of F/E tank


    why is this:confused: ?thanks


Comments

  • #2
    aujopimur
    Registered Users, Registered Users 2 Posts: 3,953 ✭✭✭aujopimur


    If the 1/2 inch is the only pipe at the exp. tank you have a semi sealed system, the 1 inch tee at the boiler may be the gravity feed to the cylinder.


  • #3
    M cebee
    Closed Accounts Posts: 4,431 ✭✭✭M cebee


    ya just one 1/2" from the header tank-that's all

    i was curious as it looks like i'll be plumbing for a few days at least :)

    so how would the expansion work on that system


    the pump is on the return close to boiler-so i thought it would be fully pumped system-don't know much though


  • #4
    aujopimur
    Registered Users, Registered Users 2 Posts: 3,953 ✭✭✭aujopimur


    The system expands thru' the cold feed,
    With regard to the heating side the pump may only be on the radiator circuit and gravity on the hot water,


  • #5
    Outkast_IRE
    Registered Users, Registered Users 2 Posts: 7,516 ✭✭✭Outkast_IRE


    to be fair if you dont know much about plumbing why are you doing it , it can cause serious accidents, people have been killed by people not knowing what they are doing , especially when you are dabbling into sealed/semi sealed systems .


  • #6
    Buford T Justice
    Registered Users, Registered Users 2 Posts: 6,262 ✭✭✭Buford T Justice


    aujopimur wrote: »
    The system expands thru' the cold feed,
    With regard to the heating side the pump may only be on the radiator circuit and gravity on the hot water,

    It would be fully pumped. There is no gravity to feed the hot water coil, as the boiler would be below the hw cylinder and would need to be pumped up to it.


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  • #7
    M cebee
    Closed Accounts Posts: 4,431 ✭✭✭M cebee


    picture of branch off flow in boiler


    also wondering why the 1/2" feed/ expansion has a valve on it? isn't that a bad idea


  • #8
    M cebee
    Closed Accounts Posts: 4,431 ✭✭✭M cebee


    Outkast_IRE wrote: »
    to be fair if you dont know much about plumbing why are you doing it , it can cause serious accidents, people have been killed by people not knowing what they are doing , especially when you are dabbling into sealed/semi sealed systems .


    no worries i may call a pro:pac:

    i still like to know-it's fairly simple stuff


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