Back boiler for stoves and open fire wanted

[AquaHydroChem]

If you Google the term "back boiler" then it dose not exists, but everyone knows what one is
The plumbers merchants say they are obsolete and old fashioned (even though log burners are back in fashion now!) and if you want one then you need to contact your fire stove supplier (or fob you off with you need to contact your qualified plumber who has his crystal ball ready and knows what part to order from us that we don't have a clue about)
When I contacted the stoves suppliers they said that this is a plumbed issue and you need to contact Joe bloggs at above said plumbing (even though this is an acssesory add on for the stove). So no one knows anything about back boilers or has a clue what they are talking about!

I happen to have a Clarke buckingham multi fuel stove sold at Machine mart only! https://www.machinemart.co.uk/p/clarke-buckingham-cast-iron-stove/
Clarks did not make a back boiler for this stove but I am just wondering if there is a specialist out there who makes back boilers?
I have a 5" flu pipe for this stove so even a back boiler that would fit inside the chimberly would do me

Any names of any companies please would be a great start?

 

[Corgigrouch GTi]

Turkington engineering make back boilers for open fires, as do Dunsley who make the Baxi solid fuel back boiler. With regards to your Clarke, chuck it in the skip and fit a decent stove with a purpose built back boiler... A 5 inch flue liner is too small for your stove.

 

[AquaHydroChem]

Thanks
I have emailed both those companies and I look forward to there reply

But no I think you are wrong; my stove should be a 4" not a 5" flu

 

[muggles]

Thanks
I have emailed both those companies and I look forward to there reply

But no I think you are wrong; my stove should be a 4" not a 5" flu

The regulations say that your liner must be 6"

Back boilers are designed to fit inside stoves, but should only be used on stoves designed to accept them, and only fitted by people with the correct qualifications. Modifying an appliance is definitely not recommended, nor is it particularly safe

 

[Jackrae]

Clearview do stoves with back boilers. In their 500 model the boiler is fitted in lieu of the rear refractory block. Their boilers are welded stainless steel sheet/plate. Not the best for heat transfer but less liable to rot away than mild steel.

In the good old days of open coal fires the back boilers were "solid" copper, with a wall thickness that must have been at least 3/16"

 

[Corgigrouch GTi]

Thanks
I have emailed both those companies and I look forward to there reply

But no I think you are wrong; my stove should be a 4" not a 5" flu

As Muggles has stated... 6inch flue liner for your stove, 5 inch if it is DEFRA exempt.

 

[Corgigrouch GTi]

Clearview do stoves with back boilers. In their 500 model the boiler is fitted in lieu of the rear refractory block. Their boilers are welded stainless steel sheet/plate. Not the best for heat transfer but less liable to rot away than mild steel.

In the good old days of open coal fires the back boilers were "solid" copper, with a wall thickness that must have been at least 3/16"

Fitted a fair few of those little clip in heat exchangers and they are perfect for heating your water cylinder as they are rated at about 2kW and you can get away without fitting back end protection... Some older cylinders have tappings for the boiler but no coil, so a stainless or copper heat exchanger in the boiler is a must..

 

[AquaHydroChem]

Thanks but I don't want another log burner I just want to adapt the one I have (there is no designed back boiler for it)
And I am aware of the risks of fitting such a thing myself.
Regarding flue size I will measure the inside of the fire tomorrow but as far as I am aware the flue should be 1/8 of the fire

 

[AquaHydroChem]

In the good old days of open coal fires the back boilers were "solid" copper, with a wall thickness that must have been at least 3/16"

Where can I get one of these from?

 

[Corgigrouch GTi]

Thanks but I don't want another log burner I just want to adapt the one I have (there is no designed back boiler for it)
And I am aware of the risks of fitting such a thing myself.
Regarding flue size I will measure the inside of the fire tomorrow but as far as I am aware the flue should be 1/8 of the fire

I fear that your statement suggests that you are not aware of the risks. The minimum size for the flue liner is 6inch for your stove... It seems that you are determined to do things your own way and I wish you luck with that but it seems that you are not really interested in taking the free advise that you have been given, so I don't think that I shall waste my time with you..

 

[AquaHydroChem]

Sorry but you are wrong!
https://dccf75d8gej24.cloudfront.net/documents/Buckingham_Stove_rev_3_090310135.pdf

Stoves under 20kW rated output which burn smokeless or low volatile fuel
require a minimum flue size of 125mm diameter (or rectangular flues
having the same cross-sectional area and a minimum dimension not less
than 100mm for straight flues or 125mm for flues with bends or offsets.

 

[Corgigrouch GTi]

Document J states that Bituminous coal, untreated wood or compressed paper are not smokeless or low-volatile fuels, since your stove is a multi fuel device, then your flue must be 150mm or 6inch..... FFS

I do this for a living... If I tell you you need 6inch, then you need 6 inch

 

[AquaHydroChem]

But I am burning smokless wood and coal so I dont see the issue

 

[Corgigrouch GTi]

But I am burning smokless wood and coal so I dont see the issue

There is no such thing as smokeless wood....Even if you only burned smokeless coal, you would still need a 150mm flue as your appliance is classed as a multifuel appliance.... Since you intend to convert this stove into a boiler, then I would suggest that this is the least of your problems.

 

[Doggit]

you would still need a 150mm

So although the stove pipe diamater is 125mm, you'd add an adaptor, and then use a 150mm flue liner.

But I've never seen such a mismash of instructions before. This set says use a 5" "if required"; now what the hell does that mean. And can they say that a 4" flue was okay for a straight liner. ???????????????