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plumbing & heating

  • 04-04-2012 5:51pm
    #1
    nadiahealy
    Registered Users, Registered Users 2 Posts: 74 ✭✭


    Hi guys, just wondering on a gravity flow circuit would the circulating pump prevent it from circulating as the pump is located on the return pipe back to the boiler


Comments

  • #2
    shane0007
    Closed Accounts Posts: 4,677 ✭✭✭shane0007


    Pump should not be on the primary circuit, so yes it can restrict the flow as will a non-return valve.


  • #3
    nadiahealy
    Registered Users, Registered Users 2 Posts: 74 ✭✭nadiahealy


    cheers shane0007


  • #4
    kaizer13
    Registered Users, Registered Users 2 Posts: 69 ✭✭kaizer13


    nadiahealy wrote: »
    Hi guys, just wondering on a gravity flow circuit would the circulating pump prevent it from circulating as the pump is located on the return pipe back to the boiler

    Gravity flow circuit does not have a circulating pump in it. Now is it a gravity or pumped circuit? Cannot be both at the same time.


  • #5
    nadiahealy
    Registered Users, Registered Users 2 Posts: 74 ✭✭nadiahealy


    it is a gravity circuit from back boiler to coil on cylinder,when pipe stat picks up temp of 70 degrees,pump kicks on and heats rads.


  • #6
    aujopimur
    Registered Users, Registered Users 2 Posts: 3,953 ✭✭✭aujopimur


    nadiahealy wrote: »
    it is a gravity circuit from back boiler to coil on cylinder,when pipe stat picks up temp of 70 degrees,pump kicks on and heats rads.
    That's the cowboy way of piping a back boiler, it should have gravity piped from one side, and a pumped heating circuit from the other.


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  • #7
    nadiahealy
    Registered Users, Registered Users 2 Posts: 74 ✭✭nadiahealy


    yes but i think that was the only option as at the back of solid fuel stove i can only see two connections on boiler,in must cases there are four connections


  • #8
    JohnnieK
    Registered Users, Registered Users 2 Posts: 2,526 ✭✭✭JohnnieK


    nadiahealy wrote: »
    yes but i think that was the only option as at the back of solid fuel stove i can only see two connections on boiler,in must cases there are four connections

    A lot of stoves only have two connections.


  • #9
    kaizer13
    Registered Users, Registered Users 2 Posts: 69 ✭✭kaizer13


    aujopimur wrote: »
    That's the cowboy way of piping a back boiler, it should have gravity piped from one side, and a pumped heating circuit from the other.

    Quite right, that is the cowboy way.

    If only two connections are used, then the return connection of a back boiler should ideally have an injector 'Tee' which allows the pumped return flow from that circuit to combine with gravity flow return at that point before re-entering the boiler for heating.


  • #10
    irishjig69b
    Registered Users, Registered Users 2 Posts: 312 ✭✭irishjig69b


    Anyone know of a stove repair guy? I had two chimney sweep guys here for 3 hours couldn't clear the chimney saying the flu park of the stove was block and they couldn't get at it, had to pay the feckers aswell must be around the Meath area


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