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rads

  • 12-12-2013 8:08pm
    #1
    johnytwentyten
    Registered Users, Registered Users 2 Posts: 281 ✭✭


    hi, just got a stove installed, there was a fire with back boiler in before, also replaced tank. havent fired up the stove yet cos im waiting on a sparky to hook up the stat and motorized valves. the problem i have is that when i had the oil on today all the rads were hot at the top but lukewarm at the bottom, i bled them but they were fine, and doesnt the cold spot normally be at the top anyway? thanks for ay help


Comments

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


    johnytwentyten wrote: »
    hi, just got a stove installed, there was a fire with back boiler in before, also replaced tank. havent fired up the stove yet cos im waiting on a sparky to hook up the stat and motorized valves. the problem i have is that when i had the oil on today all the rads were hot at the top but lukewarm at the bottom, i bled them but they were fine, and doesnt the cold spot normally be at the top anyway? thanks for ay help

    No the cooler part of the rad is always the bottom in the middle as the hottest water will rise to the top.

    If there are significant cold spots that you could have serious sludge in them and it would of probably been a good idea to powerflush the system when you were having work carried out to it.


  • #3
    shane0007
    Closed Accounts Posts: 4,677 ✭✭✭shane0007


    I would also be questioning why an electrician has to wire the motorised before you can light a fire. There should be unrestricted access from the solid fuel side to rads & cylinder. The pipe stat should only control the circulating pump from the solid fuel secondary circuit to the rads. Motorised valves should not be involved on that side of the system.


  • #4
    johnytwentyten
    Registered Users, Registered Users 2 Posts: 281 ✭✭johnytwentyten


    thanks for replying, dont have a clue to be honest, there are 2 motorized valves to be wired, havent really looked where they are goin cos not in the house at the mo, have been far from impressed with plumber anyway but dont know enough about things to question him on it, btw if im bleeding the rads and water comes out right away should i wait a while for air if its cooler at the bottom?!:confused:thanks again


  • #5
    shane0007
    Closed Accounts Posts: 4,677 ✭✭✭shane0007


    Your problem will not be air. It will either be a sludge issue, balancing issue, circulation issue or boiler output issue.
    Turn off all rads except the one you wish to test. If it now heats all the way to the bottom, then it is unlikely to be a sludge issue.


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