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Combi Boiler emissions

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Pumpkin

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Feb 17, 2016, 9:40:22 AM2/17/16
to
I have exhausted my web search trying to find out if combi boiler
emissions are just vapour or carbon monoxide emissions.

Does anyone have an answer to my query.

A newly fitted combi boiler to a neighbours house is causing the "fumes"
or "plumes" to blow into my kitchen window or if I'm outside, into my face.
--
Pumpkin
=^..^=

Tickettyboo

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Feb 17, 2016, 9:58:22 AM2/17/16
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http://www.southglos.gov.uk/Documents/Leaflets/Boiler%20Fumes%202011.pdf

Check your local council site to see if there is anything similar ? Or
give them a call and see what they say.


--
Tickettyboo

Pumpkin

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Feb 17, 2016, 10:19:30 AM2/17/16
to
Thanks Ticketyboo, well apparently they won't commit themselves and
didn't give a positive answer (typical council) except to suggest that I
keep the windows closed.

--
Pumpkin
=^..^=

Oliver

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Feb 17, 2016, 10:50:40 AM2/17/16
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Oliver

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Feb 17, 2016, 10:55:19 AM2/17/16
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On 17/02/2016 14:40, Pumpkin wrote:
> I have exhausted my web search trying to find out if combi boiler
> emissions are just vapour or carbon monoxide emissions.

Sorry - another link:

<http://www.telegraph.co.uk/finance/property/advice/9978580/Jeff-Howell-how-can-we-deal-with-steam-from-a-condensing-boiler.html>

--
Oliver

Gordon H

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Feb 17, 2016, 11:14:07 AM2/17/16
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On 17/02/2016 14:40, Pumpkin wrote:
I have a carbon monoxide alarm in the same cabinet as my combi boiler;
it might be a bit much to have one in your house near the window in
question?

--
Gordon H

Remove Invalid to reply

Pumpkin

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Feb 17, 2016, 11:15:47 AM2/17/16
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Thanks Oliver, I have measured to distance from my window to the flu, it
is 50ins.

--
Pumpkin
=^..^=

Pumpkin

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Feb 17, 2016, 11:17:09 AM2/17/16
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I do have a carbon monoxide alarm, perhaps I'll move it to the kitchen.

--
Pumpkin
=^..^=

Zephirum

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Feb 17, 2016, 11:17:34 AM2/17/16
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On 17/02/2016 14:40, Pumpkin wrote:
> I have exhausted my web search trying to find out if combi boiler
> emissions are just vapour or carbon monoxide emissions.
>
> Does anyone have an answer to my query.
>
All combustion of gas produces carbon monoxide.


--
Sailing against the wind.

Peter Parry

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Feb 17, 2016, 12:28:41 PM2/17/16
to
On Wed, 17 Feb 2016 14:40:16 +0000, Pumpkin <primrose...@gmx.com>
wrote:

>I have exhausted my web search trying to find out if combi boiler
>emissions are just vapour or carbon monoxide emissions.
>
>Does anyone have an answer to my query.

I assume you mean condensing boiler - the one with a steamy flue? They
are essentially slightly acidic water vapour. They will contain
elevated amounts of Carbon Dioxide compared with fresh air and tiny
amounts of Carbon Monoxide (typically 0 .002%). More than a foot or
so away there is no risk of CO poisoning and the flue gas CO content
will be well below the HSE limit of 50ppm.

For the dwelling in which they are fitted Boiler flues are not allowed
to be fitted within 300mm (12") of a window which can be opened. This
is a safety limit.

The danger from gas burning appliances occurs if there is insufficient
incoming air - this can't really occur these days with room sealed
boilers which take air from outside and vent waste outside. All the
cases you read of are old room ventilated boilers. Restricted air
means incomplete combustion (yellow rather than blue flame) and
increased CO. All gas appliances do produce some CO (Including gas
hobs) but only tiny insignificant amounts if combustion is complete.

As far as neighbouring properties are concerned much more restrictive
rules apply to reduce nuisance from the acidic steam in the plume. The
rules are in - “Guide to the Condensing Boiler Installation Assessment
Procedure for Dwellings”, (Section 6).

http://www.planningportal.gov.uk/uploads/br/BR_PDF_PTL_CONDBOILER.pdf

These say that a condensing boiler flue should be “a minimum of 2.5
metres from a facing wall, fence, building or property boundary”, and

British Standard BS5440-1, states that condensing boiler flues should
not be sited where the plume is “likely to cause a nuisance”.

You can get flue diverter kits which can be used to take the flue up
and out of the way.

Justin Thyme

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Feb 17, 2016, 1:16:22 PM2/17/16
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Carbon monoxide is invisible. If a boiler, combi or otherwise, is
emitting carbon monoxide it is seriously malfunctioning.

Justin Thyme

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Feb 17, 2016, 1:18:37 PM2/17/16
to
Zephirum wrote:
> On 17/02/2016 14:40, Pumpkin wrote:
>> I have exhausted my web search trying to find out if combi boiler
>> emissions are just vapour or carbon monoxide emissions.
>>
>> Does anyone have an answer to my query.
>>
> All combustion of gas produces carbon monoxide.

No. Two counterexamples:
i) combustion of hydrogen doesn't produce carbon monoxide,
ii) combustion of carbon monoxide doesn't produce carbon monoxide.

John Nice

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Feb 17, 2016, 1:25:26 PM2/17/16
to
On 17/02/2016 14:40, Pumpkin wrote:
I suspect it's a 'condensing' boiler (doesn't have to be combi). The
installation instructions lay down miniumum distance from nearby
windows. It sounds as if they have not been met. The 'plume' is water
vapour and carbon dioxide. Very little monoxide. It could, however,
constitute a nuisance; do you have a friendly plumber/heating engineer
you could consult?

--

John

www.weather.johnwnice.co.uk

Peter Parry

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Feb 17, 2016, 1:33:09 PM2/17/16
to
All domestic natural gas boilers will emit minute amounts of Carbon
Monoxide as combustion can never be perfect (CO will peak for example
for a second or so during the lighting cycle). Similarly every gas
oven and gas hob emits some Carbon Monoxide even when working as
designed. The amounts, however, are small and well below the 50 parts
per million safe limit. With a boiler on an adjacent property venting
to open air safety in a property opposite is very unlikely to be an
issue (even if the boiler seriously malfunctions). Nuisance may well
be one though. The vent steam is acidic and over time can mark
brickwork if any condenses onto the wall or damage car paintwork. It
is also mildly unpleasant if blowing in through windows or doors or
being breathed outside. Hence the much greater separation limits for
adjacent property than are needed just for safety.
.

Mr Pounder Esquire

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Feb 17, 2016, 2:08:03 PM2/17/16
to
Just to add to what other people have said:
Our condensing boiler is just over 7 years old and is in the loft, we live
in a bungalow. The boiler is serviced every year.
The vent is over the bathroom window, quite a few feet up.
The bathroom PVC window frames have yellow stains on them which cannot be
removed. The rest of the frames are fine.
As somebody here stated, the fumes are acidic.
Probably not want you wanted to hear, but I thought that I should mention
it.


Gordon H

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Feb 17, 2016, 5:18:55 PM2/17/16
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Mine goes vertically up through the tiles, because I pointed out to the
plumbob that if it went through the wall it would be too close under the
wooden eaves of the house.

mac

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Feb 17, 2016, 8:00:33 PM2/17/16
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"Pumpkin" <primrose...@gmx.com> wrote in message
news:na20oh$q7t$1...@gioia.aioe.org...
>I have exhausted my web search trying to find out if combi boiler emissions
>are just vapour or carbon monoxide emissions.
>
> Does anyone have an answer to my query.

I would suggest that you read and re-read the obviously professional opinion
posted by Peter Parry.

mac

Ali

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Feb 17, 2016, 8:04:59 PM2/17/16
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On Wed, 17 Feb 2016 17:28:39 GMT, Peter Parry commented


> These say that a condensing boiler flue should be "a minimum of 2.5
> metres from a facing wall, fence, building or property boundary"

What do you do if your property is less than 5m wide?
My neighbour's flue is less than 2.5m from our common boundary, as is my
(non-condensing) boiler flue.
The only place im my house that could possibly fulfil the above criteria is
on the back wall of my spare bedroom, on the centre line of the property, not
a convenient place for the boiler, or to run a flue to from elsewhere.

--
Ali
http://homepage.ntlworld.com/my.web.pages/ Don't go there.
UPS/FUNTO January stats: http://homepage.ntlworld.com/my.web.pages/stats/
Nearly Thirteen years of reporting!

Zephirum

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Feb 17, 2016, 10:49:08 PM2/17/16
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I obviously meant any gas as used in domestic heating situations.

Peter Parry

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Feb 18, 2016, 5:01:05 AM2/18/16
to
On Thu, 18 Feb 2016 01:04:58 GMT, Ali <ali.on...@ntlworld.com>
wrote:

>On Wed, 17 Feb 2016 17:28:39 GMT, Peter Parry commented

>> These say that a condensing boiler flue should be "a minimum of 2.5
>> metres from a facing wall, fence, building or property boundary"
>
>What do you do if your property is less than 5m wide?

Put the boiler somewhere else such as the attic or move the flue.
Condensing boiler will have plume management/displacement kits
available to allow you to take the flue up to roof level and divert
the plume away from your neighbour's property.

Older non condensing boilers are a different problem as you generally
can't divert the flue on these because of the much higher temperature
of the exhaust.

>My neighbour's flue is less than 2.5m from our common boundary, as is my
>(non-condensing) boiler flue.

>The only place im my house that could possibly fulfil the above criteria is
>on the back wall of my spare bedroom, on the centre line of the property, not
>a convenient place for the boiler, or to run a flue to from elsewhere.

Any difficulty someone has in locating a boiler is secondary to the
inconvenience poor silting will cause for their neighbour. Ultimately,
if you can't site the boiler flue such that it doesn't cause problems
for your neighbour then you can't use gas central heating. However, a
modern plume management kit can go quite a long way so it would be
very rare for this to occur.

Pumpkin

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Feb 18, 2016, 7:56:29 AM2/18/16
to
On 17/02/2016 18:25, John Nice wrote:
<snipped>
>
> I suspect it's a 'condensing' boiler (doesn't have to be combi). The
> installation instructions lay down miniumum distance from nearby
> windows. It sounds as if they have not been met. The 'plume' is water
> vapour and carbon dioxide. Very little monoxide. It could, however,
> constitute a nuisance; do you have a friendly plumber/heating engineer
> you could consult?
>
I do, my uncle is in the trade, I'll get in touch with him, if I can.

--
Pumpkin
=^..^=

Peter Parry

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Feb 18, 2016, 11:48:54 AM2/18/16
to
On Thu, 18 Feb 2016 15:57:31 +0000, m...@invalid.invalid wrote:

>isn't it "miniumum distance from nearby
> opening windows" ?

There are a couple of distances in Building Regulations Approved
Document J and some in the guidance note.

Document J distances are broadly (for condensing boilers only) :-

Outlets from flues should be so situated externally
as to allow the dispersal of products of combustion, and if a
balanced flue, the intake of air.

Separation distances

From a surface or a boundary facing the terminal = 600mm

Below/above an opening = 300mm

Horizontal to an opening = 300-600mm (depending on
the kW of the appliance, 300 for most smaller/medium domestic
installations).

From an internal or external corner or to a boundary
alongside the terminal = 200-600mm (depending on the type of flue)

"Guide to the condensing boiler installation assessment procedure for
dwellings, April 2005." is a guidance document and unlike the
building regulations is not mandatory. It states Wall terminals
should be sited a minimum 2.5metres from a facing wall,
fence, building or property boundary (this is 600mm in Building
Regulations).

Any installation meeting the Building Regulation distance will be
safe. However, one meeting the building regulation distance but not
the Guidance document while safe may also constitute a "statutory
Nuisance"

It is the responsibility of Environmental Health to investigate and
offer the neighbour guidance (for example telling them to fit a plume
management kit) or issue an abatement notice ordering them to do so.

Mr Pounder Esquire

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Feb 18, 2016, 12:18:26 PM2/18/16
to
I sent the below last night, it does not seem to have made it.

mac

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Feb 18, 2016, 3:14:02 PM2/18/16
to

"Mr Pounder Esquire" <MrPo...@RationalThought.com> wrote in message
news:na4u7g$adu$1...@dont-email.me...

> I sent the below last night, it does not seem to have made it.
>

FYI
I see it, 19:07. 17 Feb.

mac

Mr Pounder Esquire

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Feb 18, 2016, 3:18:09 PM2/18/16
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I still can't!
Virgin Media using Eternal-September.
VM have had problems .................. but never mind.


mac

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Feb 18, 2016, 7:35:51 PM2/18/16
to

"Mr Pounder Esquire" <MrPo...@RationalThought.com> wrote in message
news:na58of$o2l$1...@dont-email.me...

> Virgin Media using Eternal-September.
> VM have had problems .................. but never mind.

OK, I am with Freeserve they don't seem to have many prob's lately.


--
Regards Steve.

Ali

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Feb 18, 2016, 9:03:20 PM2/18/16
to
On Thu, 18 Feb 2016 10:01:04 GMT, Peter Parry commented


> On Thu, 18 Feb 2016 01:04:58 GMT, Ali <ali.on...@ntlworld.com>
> wrote:
>
>>On Wed, 17 Feb 2016 17:28:39 GMT, Peter Parry commented
>
>>> These say that a condensing boiler flue should be "a minimum of 2.5
>>> metres from a facing wall, fence, building or property boundary"
>>
>>What do you do if your property is less than 5m wide?
>
> Put the boiler somewhere else such as the attic or move the flue.

Wherever it's put will be within 2.5m of a property boundary.


> Condensing boiler will have plume management/displacement kits
> available to allow you to take the flue up to roof level and divert
> the plume away from your neighbour's property.
>
<snip>
>
> Any difficulty someone has in locating a boiler is secondary to the
> inconvenience poor silting will cause for their neighbour.

My neighbour's flue doesn't cause me any problems.


> Ultimately,
> if you can't site the boiler flue such that it doesn't cause problems
> for your neighbour then you can't use gas central heating. However, a
> modern plume management kit can go quite a long way so it would be
> very rare for this to occur.

Seems like a good reason to keep the old boiler.

Pumpkin

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Feb 19, 2016, 9:44:55 AM2/19/16
to
On 17/02/2016 14:40, Pumpkin wrote:
> I have exhausted my web search trying to find out if combi boiler
> emissions are just vapour or carbon monoxide emissions.
>
> Does anyone have an answer to my query.
>
> A newly fitted combi boiler to a neighbours house is causing the "fumes"
> or "plumes" to blow into my kitchen window or if I'm outside, into my face.

Thank you all for the helpful advice, I am going to contact the tenants
landlord as he was the one who had the new boiler installed.

Will report back when I have an answer.

Once again, many thanks to you all.
--
Pumpkin
=^..^=

bruceh...@gmail.com

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Feb 14, 2020, 5:31:06 AM2/14/20
to
A properley serviced and mentained boiler emits carbon dioxide not monoxide....monoxode is produced when dioxide is reburned that should be almost impossible if thw boiler is as i say installed and seviced correctly

Bri.

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Feb 14, 2020, 6:06:54 AM2/14/20
to
Carbon dioxide cannot be re-burned.
Carbon monoxide can be burned (if pre-heated), producing carbon
dioxide.
--
Bri.

bert

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Feb 17, 2020, 6:27:16 AM2/17/20
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In article <nws5gjuqyai6.12cvdhm7o8cum$.d...@40tude.net>, Bri.
<Br...@Derby.invalid> writes
Carbon monoxide is produced by incomplete burning of carbon. As a rule
minimal quantities from gas compared to liquids (petrol. An ICE burning
propane/butane produces far less than the same engine burning petrol.
--
Bert


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