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jonboy
Joined: 23 Mar 2008
Posts: 5
Location: essex
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 Posted: Sun Mar 23, 2008 6:29 pm Post subject: air sucked in via radiator |
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heating was working,but a couple of rads upstairs felt as though they needed bleeding. the hissing of air was air being sucked in. now heating is off as pump makes a racket, as there is more air in the system now.
what can i do?any advice appreciated. |
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thescruff
Moderator
Joined: 03 May 2003
Posts: 4164
Location: Bath
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| Posted: Sun Mar 23, 2008 7:45 pm Post subject: |
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Information is what we need.
Never bleed the rads with the pump on.
do you need to top the boiler pressure up |
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jonboy
Joined: 23 Mar 2008
Posts: 5
Location: essex
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| Posted: Sun Mar 23, 2008 10:13 pm Post subject: re air in rad. |
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| thanks will check boiler pressure. |
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jonboy
Joined: 23 Mar 2008
Posts: 5
Location: essex
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| Posted: Sun Mar 23, 2008 11:01 pm Post subject: |
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| regards to info, its a open vented system, water trickles out of downstairs rad but upstairs bathroom rad sucks air in when bleeding, system is off when doing this? |
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thescruff
Moderator
Joined: 03 May 2003
Posts: 4164
Location: Bath
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| Posted: Sun Mar 23, 2008 11:21 pm Post subject: |
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| OK, check the header tank has water in it rirst |
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jonboy
Joined: 23 Mar 2008
Posts: 5
Location: essex
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| Posted: Mon Mar 24, 2008 8:39 am Post subject: |
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| header tank is full, switched pump on this morning sounds better, air must of moved a bit during the night, but still not heating rads, boiler only lights up when thermostat is turned up to high,i wonder if this is air lock will find its way out over time,? |
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Yellowman
Joined: 03 Jan 2008
Posts: 60
Location: Sussex
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| Posted: Mon Mar 24, 2008 12:10 pm Post subject: |
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It sounds like its not filling properly from the header tank. Which could be due to an airlock or a blocked cold feed.
How competent are you because you could try backfilling the system to remove any blockage or an airlock |
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jonboy
Joined: 23 Mar 2008
Posts: 5
Location: essex
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| Posted: Mon Mar 24, 2008 8:46 pm Post subject: |
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| have now refilled system as you suggest, all rads working,to get me by, but when draining system water from header tank never became empty, and yes supply was switched off, will check this out in the summer! what a day.....thanks for your responce |
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thescruff
Moderator
Joined: 03 May 2003
Posts: 4164
Location: Bath
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| Posted: Mon Mar 24, 2008 9:02 pm Post subject: |
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| Looks like the cold feed is blocked in that case |
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Yellowman
Joined: 03 Jan 2008
Posts: 60
Location: Sussex
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| Posted: Tue Mar 25, 2008 12:02 am Post subject: |
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You want to get it sorted sooner really because it can push water outthe vent into the header tank ands you can risk pulling air back in that way. At least I think.
Scruff im sure will correct if i'mwrong |
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