Removing a back boiler - what to do with the flue?

Steve

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Feb 7, 2010, 10:03:27 AM2/7/10

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Hi. I'm removing an old Baxi back-boiler at the back of the living room
fireplace. It's a old propane powered one; I've just had a new mains gas
boiler installed in the kitchen. I've disconnected all power and pipes to
the old boiler of course.

There is a flue liner (corrugated metal tube) running up through the
chimney. The top of the chimney has a metal cap with side vents and
presumably the liner is attached to the inside.

My problem is what to do with the liner. When I remove the old boiler, the
bottom of the liner (which is fastened to a metal plate) will just be
hanging there. Do I need to support it while removing the boiler? Do I nee
to support it afterwards or can it safely be left hanging ?

FWIW I plan to board up the front of the fireplace and include some
ventilation.

Thanks

Message has been deleted

JimK

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Feb 7, 2010, 10:17:06 AM2/7/10

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On Feb 7, 3:14 pm, Tim Watts <t...@dionic.net> wrote:
> Steve <stevescholn...@hotmail.com>
> wibbled on Sunday 07 February 2010 15:03

>
>
>
> > Hi. I'm removing an old Baxi back-boiler at the back of the living room
> > fireplace. It's a old propane powered one; I've just had a new mains gas
> > boiler installed in the kitchen. I've disconnected all power and pipes to
> > the old boiler of course.
>
> > There is a flue liner (corrugated metal tube) running up through the
> > chimney. The top of the chimney has a metal cap with side vents and
> > presumably the liner is attached to the inside.
>
> > My problem is what to do with the liner. When I remove the old boiler,
> > the bottom of the liner (which is fastened to a metal plate) will just be
> > hanging there. Do I need to support it while removing the boiler? Do I
> > nee to support it afterwards or can it safely be left hanging ?
>

> Leave it for the moment - it won't fall out, but see below:
>
> I also removed an old Baxi back boiler - watch your back, the heat exchanger
> is a solid bastard.

>
>
>
> > FWIW I plan to board up the front of the fireplace and include some
> > ventilation.
>
> > Thanks
>

> Liner - it won't do any harm to leave it in place and it is adequately
> supported from the top, but you may find the wind plays tunes on it (ours
> did, until the liner was replaced with a stove grade one).
>
> In which case you'll probably want to take it out as it can get very
> annoying, even though that will mean a trip o the roof...
>
> Wait for a windy day to see if it's a problem or not...
>
would bunging the bottom end be a stopgap against the whistling?

JimK

ARWadsworth

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Feb 7, 2010, 10:26:32 AM2/7/10

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"Tim Watts" <t...@dionic.net> wrote in message
news:hkmldc$muv$1...@news.eternal-september.org...
> Steve <stevesc...@hotmail.com>

> wibbled on Sunday 07 February 2010 15:03
>

>> Hi. I'm removing an old Baxi back-boiler at the back of the living room
>> fireplace. It's a old propane powered one; I've just had a new mains
>> gas
>> boiler installed in the kitchen. I've disconnected all power and pipes
>> to
>> the old boiler of course.
>>
>>
>>
>> There is a flue liner (corrugated metal tube) running up through the
>> chimney. The top of the chimney has a metal cap with side vents and
>> presumably the liner is attached to the inside.
>>
>>
>>
>> My problem is what to do with the liner. When I remove the old boiler,
>> the bottom of the liner (which is fastened to a metal plate) will just be
>> hanging there. Do I need to support it while removing the boiler? Do I
>> nee to support it afterwards or can it safely be left hanging ?
>>
>

> Leave it for the moment - it won't fall out, but see below:
>
> I also removed an old Baxi back boiler - watch your back, the heat
> exchanger
> is a solid bastard.
>
>>

>> FWIW I plan to board up the front of the fireplace and include some
>> ventilation.
>>
>>
>>
>> Thanks
>

> Liner - it won't do any harm to leave it in place and it is adequately
> supported from the top, but you may find the wind plays tunes on it (ours
> did, until the liner was replaced with a stove grade one).
>
> In which case you'll probably want to take it out as it can get very
> annoying, even though that will mean a trip o the roof...
>
> Wait for a windy day to see if it's a problem or not...
>

> --
> Tim Watts
>

I left my old flue in place. It acts as a megga phone for pigeons on the
chimney. It will have to go this summer.

Adam

Message has been deleted

Harry Bloomfield

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Feb 7, 2010, 10:33:51 AM2/7/10

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JimK used his keyboard to write :

Probably not - take a piece of tube and blow across the top. It makes
no difference whether the bottom end is blocked or not.

--
Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk

Onetap

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Feb 7, 2010, 2:32:26 PM2/7/10

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On 7 Feb, 15:03, "Steve" <stevescholn...@hotmail.com> wrote:

Should be some insulation between the liner and the brick flue, it may
be loose and come down.
Flog the back boiler on E-Bay, lots of people are after them now as
additional heating.

Steve

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Feb 7, 2010, 3:38:48 PM2/7/10

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"Steve" <stevesc...@hotmail.com> wrote in message
news:tcqdnXIsAf6qS_PW...@bt.com...

> Hi. I'm removing an old Baxi back-boiler at the back of the living room
<

<snipped>
>
Thanks for replies chaps. Very helpful.