Hello

I have CH problem where the CH stops working due to air entering the system.
I can get it going again by bleeding the pump and then it works ok for a
couple of days. This problem has got progressively worse and I now need to
fix it asap.

Anyone have any ideas what could be causing this?

Thanks

Tony

In an earlier contribution to this discussion,
Tony <(E-Mail Removed)> wrote:

> Hello
>
> I have CH problem where the CH stops working due to air entering the
> system. I can get it going again by bleeding the pump and then it
> works ok for a couple of days. This problem has got progressively
> worse and I now need to fix it asap.
>
> Anyone have any ideas what could be causing this?
>
> Thanks
>
> Tony

Are you sure it's air? It could be hydrogen, resulting from corrosion,
unless you have sufficient inhibitor in the system. Next time you bleed a
radiator, collect some of this 'air' in an upturned jar, and see whether it
burns when you put a match to it. If it does, it's hydrogen - and you need
to tackle the corrosion.

If it doesn't, you need to investigate where air is getting in. Does the F&E
tank have sufficient water in it - or has the ball valve stuck? Is the
system pumping over? Etc.

--
Cheers,
Set Square
______
Please reply to newsgroup. Reply address is invalid.

I'll have to do the check for Hydrogen you suggested and have a look at the
expansion tank but I know for sure there's no inhibitor in the system as it
was drained down recently by a plumber when the rad in the bathroom was
changed.

Is this important and do you have any recommendations for inhibitor?

Cheers

Tony

"Set Square" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> In an earlier contribution to this discussion,
> Tony <(E-Mail Removed)> wrote:
>
>> Hello
>>
>> I have CH problem where the CH stops working due to air entering the
>> system. I can get it going again by bleeding the pump and then it
>> works ok for a couple of days. This problem has got progressively
>> worse and I now need to fix it asap.
>>
>> Anyone have any ideas what could be causing this?
>>
>> Thanks
>>
>> Tony
>
> Are you sure it's air? It could be hydrogen, resulting from corrosion,
> unless you have sufficient inhibitor in the system. Next time you bleed a
> radiator, collect some of this 'air' in an upturned jar, and see whether
> it
> burns when you put a match to it. If it does, it's hydrogen - and you need
> to tackle the corrosion.
>
> If it doesn't, you need to investigate where air is getting in. Does the
> F&E
> tank have sufficient water in it - or has the ball valve stuck? Is the
> system pumping over? Etc.
>
> --
> Cheers,
> Set Square
> ______
> Please reply to newsgroup. Reply address is invalid.
>
>

In an earlier contribution to this discussion,
Tony <(E-Mail Removed)> wrote:

> I'll have to do the check for Hydrogen you suggested and have a look
> at the expansion tank but I know for sure there's no inhibitor in the
> system as it was drained down recently by a plumber when the rad in
> the bathroom was changed.
>
> Is this important and do you have any recommendations for inhibitor?
>
> Cheers
>
> Tony
>
Something like this
http://www.plumbworld.co.uk/93-185?P...395c3af7bf497e
should do the trick.

If you are generating hydrogen, you *definitely* need it.
--
Cheers,
Set Square
______
Please reply to newsgroup. Reply address is invalid.

In-case anyone's interested, I used Fernox Restorer in the system for a
week, then refilled with Fernox Inhibitor and now everything works fine.

Thanks for your help.


"Set Square" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> In an earlier contribution to this discussion,
> Tony <(E-Mail Removed)> wrote:
>
>> I'll have to do the check for Hydrogen you suggested and have a look
>> at the expansion tank but I know for sure there's no inhibitor in the
>> system as it was drained down recently by a plumber when the rad in
>> the bathroom was changed.
>>
>> Is this important and do you have any recommendations for inhibitor?
>>
>> Cheers
>>
>> Tony
>>
> Something like this
> http://www.plumbworld.co.uk/93-185?P...395c3af7bf497e
> should do the trick.
>
> If you are generating hydrogen, you *definitely* need it.
> --
> Cheers,
> Set Square
> ______
> Please reply to newsgroup. Reply address is invalid.
>
>