Open-flue Gas Appliance in Compartment - Ventilation Requirements
Rod
cupboard (all right, a compartment) which has a door.
We wish to replace this door (because it is tatty). But we need to fit
ventilation grilles. I *know* I found calculations for the requirements
somewhere when last I looked. Now I can't. (I just find references to
sites which have the information for a fee such as BSI.)
The boiler is something like 12 to 15 KW. We need to provide air inflow
for combustion plus air in/out for moderating the temperature in the
cupboard. (I *know* we should get a condensing boiler... :-) )
What effective area ventilation grilles are required? Or where can I
find the calaculations?
--
Rod
Hypothyroidism is a seriously debilitating condition with an insidious
onset.
Although common it frequently goes undiagnosed.
<www.thyromind.info> <www.thyroiduk.org> <www.altsupportthyroid.org>
John Stumbles
> What effective area ventilation grilles are required? Or where can I
> find the calaculations?
Should be in Part L of the Building Regs (see uk-d-i-y faq wiki for links)
or in the bootleg BS5440-1:2000 kicking around as a torrent on th'interwub
--
John Stumbles
The clairvoyants' meeting has been cancelled due to unforseen circumstances.
Andrew Gabriel
John Stumbles <john.s...@ntlworld.com> writes:
> On Wed, 04 Jun 2008 14:58:02 +0100, Rod wrote:
>
>> What effective area ventilation grilles are required? Or where can I
>> find the calaculations?
>
> Should be in Part L of the Building Regs (see uk-d-i-y faq wiki for links)
> or in the bootleg BS5440-1:2000 kicking around as a torrent on th'interwub
Start by checking the boiler's installation instructions
if you still have them. They override anything else.
--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]
Rod
> Start by checking the boiler's installation instructions
> if you still have them. They override anything else.
>
Not a hope! At least two owners ago.
Ed Sirett
> On Wed, 04 Jun 2008 14:58:02 +0100, Rod wrote:
>
>> What effective area ventilation grilles are required? Or where can I
>> find the calaculations?
>
> Should be in Part L of the Building Regs (see uk-d-i-y faq wiki for
> links) or in the bootleg BS5440-1:2000 kicking around as a torrent on
> th'interwub
Ventilation is in BS 5440-2 - Someone very nicely made these available
to the public the other year.
--
Ed Sirett - Property maintainer and registered gas fitter.
The FAQ for uk.diy is at http://www.diyfaq.org.uk
Gas fitting FAQ http://www.makewrite.demon.co.uk/GasFitting.html
Sealed CH FAQ http://www.makewrite.demon.co.uk/SealedCH.html
Choosing a Boiler FAQ http://www.makewrite.demon.co.uk/BoilerChoice.html
Heliotrope Smith
"Rod" <poly...@ntlworld.com> wrote in message
news:6anlbeF...@mid.individual.net...
A compartment ventilated to a room or internal space requires 10 cm2 per
kilowatt (net) of the boiler maximum rated input at high level. Low level
requires 20 cm2 per kilowatt (net)
You should find the rating information on the plate fixed to the boiler.
Grills should be non closable and not covered in any mesh/flyscreen etc.
Rod
>
> A compartment ventilated to a room or internal space requires 10 cm2 per
> kilowatt (net) of the boiler maximum rated input at high level. Low level
> requires 20 cm2 per kilowatt (net)
> You should find the rating information on the plate fixed to the boiler.
> Grills should be non closable and not covered in any mesh/flyscreen etc.
>
>
PCPaul
> Start by checking the boiler's installation instructions if you still
> have them. They override anything else.
My boilers installation and user manuals were on their web site (vokera)
- you could try that?
geoff
<poly...@ntlworld.com> writes
>Andrew Gabriel wrote:
>> Start by checking the boiler's installation instructions
>> if you still have them. They override anything else.
>>
>
>Not a hope! At least two owners ago.
>
There's an outside chance I will have the manual for it
... or can lay my hands on one
--
geoff
Rod
>
IIRC Poxi-Batterton Kingfisher? - maybe Kingfisher 2 or something.
Cupboard is dark so do not wish to look right now. :-)
John Stumbles
>> There's an outside chance I will have the manual for it
>>
>> .... or can lay my hands on one
>>
>
> IIRC Poxi-Batterton Kingfisher? - maybe Kingfisher 2 or something.
> Cupboard is dark so do not wish to look right now. :-)
There's also a torrent of boiler manuals. Try googling 'GAM torrent' for
starters. You can select which files you download from the almost 2 gigs
total size of the torrent.
--
John Stumbles
What is a simile like?
geoff
<poly...@ntlworld.com> writes
>geoff wrote:
>> In message <6anve4F...@mid.individual.net>, Rod
>><poly...@ntlworld.com> writes
>>> Andrew Gabriel wrote:
>>>> Start by checking the boiler's installation instructions
>>>> if you still have them. They override anything else.
>>>>
>>>
>>> Not a hope! At least two owners ago.
>>>
>> What appliance is it ?
>> There's an outside chance I will have the manual for it
>> .... or can lay my hands on one
>>
>
>IIRC Poxi-Batterton Kingfisher? - maybe Kingfisher 2 or something.
>Cupboard is dark so do not wish to look right now. :-)
>
ring me tomorrow
01923 229224
--
geoff
Ed Sirett
That will be a slight over estimate. Pretty much all appliances are
quoted in gross. So 9 and 18 are the figures. Also the combustion air
supply is required to the room containing the compartment. This is 4.5cm2/
kW (from outside air), but the first 7kW are discounted.
Heliotrope Smith
"Ed Sirett" <e...@makewrite.demon.co.uk> wrote in message
news:g29hnn$14b$2$8300...@news.demon.co.uk...
Not an estimate, but the figures stated in the regulations.
I did add in my post that the figures are net so of course divide 1.11 if
input is stated gross to give the required size of vents.
You are a little out of date with combustion air supply sizing. This has
been 5cm2 per kW (-7kW) for some time now.
Rod
>
> You might be in luck there
>
> ring me tomorrow
Sorry - didn't manage to call but thanks for offering.
John Stumbles
> "Ed Sirett" <e...@makewrite.demon.co.uk> wrote in message
>> That will be a slight over estimate. Pretty much all appliances are
>> quoted in gross. So 9 and 18 are the figures. Also the combustion air
>> supply is required to the room containing the compartment. This is 4.5cm2/
>> kW (from outside air), but the first 7kW are discounted.
>
> Not an estimate, but the figures stated in the regulations.
> I did add in my post that the figures are net so of course divide 1.11 if
> input is stated gross to give the required size of vents.
> You are a little out of date with combustion air supply sizing. This has
> been 5cm2 per kW (-7kW) for some time now.
which, funnily enough, gets you to 4.5 cm^2
--
John Stumbles
Procrastinate now!
Rod
That bit is already sorted. Thanks for pointing it out though.
Heliotrope Smith
"John Stumbles" <john.s...@ntlworld.com> wrote in message
news:klj2k.89007$x55....@newsfe17.ams2...
You're right. Too much red stuff, should have realised ED was talking in old
money.
Ed Sirett
Which still seems to be the currency. Almost no gas appliance I've seen
in the last few years new or old uses the 'new' money.