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Gas heating low water pressure ?

  • 25-09-2010 10:05pm
    #1
    Registered Users, Registered Users 2 Posts: 1,163 ✭✭✭


    Just tried to start the Gas Heating for the first time in months and the reading for the water is on zero and should be at 2 bar, I tried to fill it but its not filling. Could it be air locked ? if so how do I fix it ?


Comments

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


    If there was an airlock you should still get some reading on the pressure gauge. Have you noticed any leaks? are you leaving the top up valve open long enough? 2bar is very high for a system too, it should only be 1bar cold fill.


  • Registered Users, Registered Users 2 Posts: 1,163 ✭✭✭2qk4u


    When I turned the valve to fill it I heard the water move and could feel it starting to flow, then it just stopped. No sign of a leak. I left it on foe about five minutes but its still on zero.


  • Closed Accounts Posts: 37 The Barron


    2qk4u wrote: »
    Just tried to start the Gas Heating for the first time in months and the reading for the water is on zero and should be at 2 bar, I tried to fill it but its not filling. Could it be air locked ? if so how do I fix it ?

    check again they may be two valve that have to be opened

    1 bar (cold) should be plenty of pressure


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


    Can you take any pictures of the filling point and the boiler and gauge and post them?


  • Registered Users, Registered Users 2 Posts: 1,163 ✭✭✭2qk4u


    The Barron wrote: »
    check again they may be two valve that have to be opened

    1 bar (cold) should be plenty of pressure

    Ive topped it up before using this valve/tap.


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  • Registered Users Posts: 268 ✭✭smoochie06


    The Barron wrote: »
    check again they may be two valve that have to be opened

    1 bar (cold) should be plenty of pressure

    Mine is an ariston and there is 2 valves to be opened so it could be that. Also if mine goes below a certain pressure (not sure exactly what pressure) it wont fire. OP does yours fire ? Just wondering because maybe there is something wrong with the gauge.


  • Registered Users, Registered Users 2 Posts: 1,163 ✭✭✭2qk4u


    smoochie06 wrote: »
    Mine is an ariston and there is 2 valves to be opened so it could be that. Also if mine goes below a certain pressure (not sure exactly what pressure) it wont fire. OP does yours fire ? Just wondering because maybe there is something wrong with the gauge.

    Yeah fires up and runs ok.


  • Registered Users Posts: 268 ✭✭smoochie06


    2qk4u wrote: »
    Yeah fires up and runs ok.

    Sounds like the gauge could be gone. I could be wrong though. Better to get a professional to look at it.


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


    smoochie06 wrote: »
    Mine is an ariston and there is 2 valves to be opened so it could be that. Also if mine goes below a certain pressure (not sure exactly what pressure) it wont fire. OP does yours fire ? Just wondering because maybe there is something wrong with the gauge.

    0.8bar is the pressure if it's an Ariston CLAS. (Great boiler)


  • Registered Users Posts: 268 ✭✭smoochie06


    JohnnieK wrote: »
    0.8bar is the pressure if it's an Ariston CLAS. (Great boiler)


    Thats the one. Very happy with it.


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  • Registered Users, Registered Users 2 Posts: 1,163 ✭✭✭2qk4u


    Am I right in thinking that if the pressure is too low it will turn off ?


  • Registered Users Posts: 268 ✭✭smoochie06


    2qk4u wrote: »
    Am I right in thinking that if the pressure is too low it will turn off ?

    Thats the way it is with mine. Not sure about other systems. See the manual and it should tell you.


  • Registered Users, Registered Users 2 Posts: 1,163 ✭✭✭2qk4u


    I ran the heating for about twenty minutes and all seem to be normal apart from the gauge reading zero still. May just be a faulty gauge although the system is only 3 years old.


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