Jon W wrote:

I've just found out that I don't need to buy a balanced flue stove as I have
a chimney (conventional flue). However in the brochure it uses the term
suitably lined. The chimney is about 70 years old, brick, and is lined with
cement (probably lime) which is now starting to flake off in places. The
original chimney stack has been replaced with a aluminium pipe and cowl.

If its that old IIRC you are permitted to use a flexible flue liner. If
you are in suffolk area I have some of this going begging.

Building regs will not allow use of an unlined flue for stoves. Period.



Now I may well fit the stove myself, as it looks pretty straight forward, or
I may pay someone. Either way I will get the work comissioned by a Corgi reg
person.

Bascially, I just need to know that if I buy this conventional flue model
stove (efel harmony 5), that I won't need to spend another £xxx amount
having the chimney specially lined.


You will. If BCO catches you. In any case its extremely stupid not to.
The linetrs - flexible ones - will noi be too expensive: Fitting is
harder as you tend to either have to haul them up to the pot or drop
them down fronm it. Probably need to remove pot and replace with cowl
anyway to sptop birds falling down. This means scaffolding or a brave
builder up top on the pot.



It seems that I just need to stick a short length of stove flue pipe up the
chimney, and make sure it's got an airtight 'closure-plate', and then let
natural convection do the rest. Due to the small size of the stove (5kw
output), it appears that I don't need a ventiallation hole either.


Illegal IIRC. Stove pipe yes, but into that flexible liner.

Check with online building regs, and pleaee, don't skimp on it. Or call
up BCO.

It will cost a lot - several hundred to have it done, maybe more. I
fited an old wood burnetr to me new house, and I was required to use
stainless steel double insulated liner EVEN THOUGH the flues were lined
with ceramic liners. Cost about a grand with labour. You won;t need to
go that far, but even so expect £500 and be grateful if its less.

Old chimenys seem to be reckoned tobe good from fire point ogf view -
hence the allowance of a single steel liner that gets very hot - but are
not deemed to be gas tight - and mostly they are not. CO poisoning is a
nasty way to die. Do it properly.

As far as ventialtion goes, you will need a little bit. Something like a
hit and miss cvent in the room is adequate.

Again, consult BCO before starting. Unless you reckoin you can keep them
out of the picture altogether.


BCO regs are very sane on fire and combustion appliances: I would stick
to the guidelines no matter what the cost, especially if you want your
insurance to stay valid.





Sorry for rambling.

Advice/comments

Jon