liner into old chimney for gas stove

liner into old chimney for gas stove

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Discussion

strath44

Original Poster:

1,358 posts

147 months

Wednesday 29th June 2016
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Hi Folks,

we are currently getting our roof replaced with new slate and the chimney was to get repointed. It was deemed as unsafe and had to be pulled down and rebuilt with new stone (it was in terrible condition).

We have a Morso Gas Stove which was brought from our old house and we would like to fit it here, the stone mason has suggested fitting the main flu / chimney liner whilst the chimney cap / cope is off and it is stripped down.

I will be getting a hetas engineer to fit the stove but can anyone recommend a liner to use just now so that in a few months when work is done inside the stove engineer can fit the stove in with metal plate and flu attachment later.

This is our gas stove

http://www.stoveculture.co.uk/morso-panther-2100-g...

roofer

5,136 posts

210 months

Wednesday 29th June 2016
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You'll want a 6" 916 stainless if single wall. Be better if you could get a twin wall in, but that's an 8" external diameter.

dirkgently

2,160 posts

230 months

Wednesday 29th June 2016
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I think that you may need a Gas safe engineer.

ColinM50

2,630 posts

174 months

Thursday 30th June 2016
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dirkgently said:
I think that you may need a Gas safe engineer.
He's not an Engineer he's a plumber. Or maybe a Technician or Fitter, but definitely NOT an Engineer

2lefthands

400 posts

138 months

Thursday 30th June 2016
quotequote all
ColinM50 said:
dirkgently said:
I think that you may need a Gas safe engineer.
He's not an Engineer he's a plumber. Or maybe a Technician or Fitter, but definitely NOT an Engineer
I would take this up with Gas Safe then, as their misleading website offers the service of finding an engineer, and even has an engineer login area for "engineers" to record reportable works.

Pretty sure the dictionary definition of engineer also covers building and maintaining something designed by another, which I presume is what you were digging at?

To the OP; I agree with dirkgently, HETAS might be something your engineer can cover, but if they aren't Gas Safe registered, they shouldn't be anywhere near your appliance. When you locate someone, check their number on the website and ensure they have a tick next to fire, otherwise they've only completed basic level of qualifications and haven't been assessed to install or service your appliance.

LookAtMyCat

464 posts

107 months

Thursday 30th June 2016
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ColinM50 said:
He's not an Engineer he's a plumber. Or maybe a Technician or Fitter, but definitely NOT an Engineer
haha. Had this a while back, it was probably you. If you don't think heating engineers are engineers then you a)don't know what engineer means b)don't know what being a heating engineer actually involves c)are just a prat.

I'd bet on all 3.


g7jtk

1,756 posts

153 months

Thursday 30th June 2016
quotequote all
dirkgently said:
I think that you may need a Gas safe engineer.
You mean a gas safe engineer that is qualified to fit gas fires. Check the back of their gas safe card to see.

strath44

Original Poster:

1,358 posts

147 months

Thursday 30th June 2016
quotequote all
Thanks folks, got advice and fitting a 125mm or 5in flue liner.

Will be getting it connected at the other end by the relevant person.

g7jtk

1,756 posts

153 months

Thursday 30th June 2016
quotequote all
The flue is part of the gas appliance and needs the ccn1 qualifications to install it.
Of course you can dream yourself a competent person to fit it in your own property, but if you get it wrong !!!

bendohhh

1 posts

134 months

Thursday 30th June 2016
quotequote all
The flue itself can be installed by anyone without any formal qualifications. It's the final connection and commissioning process which requires the qualifications.

A flexible flue liner like Technoflex made by Schiedel would do for lining a chimney if it's made from non-combustible materials. Just bear in mind, for a flue system in residential applications it's necessary to be able to gain access to any joints in the flue so that they can be inspected.

dickymint

24,092 posts

257 months

Saturday 2nd July 2016
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strath44 said:
Thanks folks, got advice and fitting a 125mm or 5in flue liner.

Will be getting it connected at the other end by the relevant person.
Then if your original link is correct then your advice of flue liner is totally wrong and should not be approved by any Gas Safe installer! Your link clearly states 155mm flue diameter - manufacturers specifications should always take precedent over Gas Safe regs.

Simpo Two

85,147 posts

264 months

Saturday 2nd July 2016
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I was surprised it was 6" - my 5Kw multifuel Stovax has to send all sorts of crud up the chimney and is 5".

Rickyy

6,618 posts

218 months

Saturday 2nd July 2016
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ColinM50 said:
dirkgently said:
I think that you may need a Gas safe engineer.
He's not an Engineer he's a plumber. Or maybe a Technician or Fitter, but definitely NOT an Engineer
It's an industry appointed title. Some gas 'engineers' will have you believe they are equal to doctors and astronauts, but most realise it's a meaningless title, but it's what Gas Safe insist on calling us. Unless you are OFTEC registered, then you are an Oil Fired Technician.

OP, not all gas fire installations require a liner to be fitted. Have a look through the installation manual or call the manufacturers technical department for guidance.

dickymint

24,092 posts

257 months

Saturday 2nd July 2016
quotequote all
Simpo Two said:
I was surprised it was 6" - my 5Kw multifuel Stovax has to send all sorts of crud up the chimney and is 5".
It's a gas fire totally different animal wink


strath44

Original Poster:

1,358 posts

147 months

Saturday 2nd July 2016
quotequote all
I was initially going to fit a 6 inch on the off chance we ever put a wood burner on that chimney however after speaking to morso they recommend 5 inch on my stove and said there could be issues with the 6 inch - what I don't know maybe to do with exhausting the fumes etc.

But yes much different to fitting a flu for a log burner I think the recommended is 6 inch min for them!

Rickyy

6,618 posts

218 months

Saturday 2nd July 2016
quotequote all
strath44 said:
I was initially going to fit a 6 inch on the off chance we ever put a wood burner on that chimney however after speaking to morso they recommend 5 inch on my stove and said there could be issues with the 6 inch - what I don't know maybe to do with exhausting the fumes etc.

But yes much different to fitting a flu for a log burner I think the recommended is 6 inch min for them!
There are different grade liners for gas and solid fuel stoves, make sure you have specced the correct one.

Simpo Two

85,147 posts

264 months

Saturday 2nd July 2016
quotequote all
dickymint said:
Simpo Two said:
I was surprised it was 6" - my 5Kw multifuel Stovax has to send all sorts of crud up the chimney and is 5".
It's a gas fire totally different animal wink
It is, but gas burns more cleanly and predictably than the stuff a multifuel stove has to cope with. I'm sure my boiler doesn't have a 6" flue.

strath44 said:
But yes much different to fitting a flu for a log burner I think the recommended is 6 inch min for them!
No, most <5Kw stoves are specced with 5" flues.

dickymint

24,092 posts

257 months

Saturday 2nd July 2016
quotequote all
Simpo Two said:
dickymint said:
Simpo Two said:
I was surprised it was 6" - my 5Kw multifuel Stovax has to send all sorts of crud up the chimney and is 5".
It's a gas fire totally different animal wink
It is, but gas burns more cleanly and predictably than the stuff a multifuel stove has to cope with. I'm sure my boiler doesn't have a 6" flue.

strath44 said:
But yes much different to fitting a flu for a log burner I think the recommended is 6 inch min for them!
No, most <5Kw stoves are specced with 5" flues.
Had a closer look and indeed you are correct - the output collar is 6" but a 5" flue is fine............

https://www.oilstoves.co.uk/webdocs/technical/Mors...

strath44

Original Poster:

1,358 posts

147 months

Sunday 3rd July 2016
quotequote all
"Had a closer look and indeed you are correct - the output collar is 6" but a 5" flue is fine............

https://www.oilstoves.co.uk/webdocs/technical/Mors...

Indeed that had even the morso tech initially confused and say fit a 6inch as that is the collar size however they called back to say definitely fit a 5 inch!

My stove is also available as a wood burner etc so I reckon they use the same cast for a lot of stoves!

I should have asked the fitters what they were using at our old house when it was installed there!