E
emerald
in my travels i have come across a few condensing combi's mounted on plywood, and gas safe havnt given me a definitive answer on weather this is AR or NCS what do you guys think?
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M
Mbear
My boiler in the house is mounted on 3/4" plywood.
The Walls are larfin plaster, it's the only way to hang a boiler sometimes. I wouldn't say there's anyfing wrong with it at all tbh
The Walls are larfin plaster, it's the only way to hang a boiler sometimes. I wouldn't say there's anyfing wrong with it at all tbh
E
emerald
i have done it once or twice, normally for plasterboard or uneven walls, the reason i wanted to ask, was another guy went to service it and tryed to AR it, he almost stickered it apparently but changed his mind, when i last had my annual inspection, i took the inspector to an installation i did with ply, and he said nothing about it
for the record, .. just in case i now use 3/4 ply with 5mm fireboard screwed to it, no arguements then
for the record, .. just in case i now use 3/4 ply with 5mm fireboard screwed to it, no arguements then
O
oldplumber
ive been after you and your 105he instants emerald, and had to take em off to install the old aspestolux lining. only joking of course but round here it seems a common practice to disregard the need to have a fire resistant surface to mount the boiler on. But as we are both aware, some of the hotels round here burn really well and at regular intervals, i reckon the Berkley is the next for the tourist entertainment evening this summer, if the colli hasnt burst into flames first. if only the boilers had been mounted properly!!!!!!!!!
E
emerald
ive been after you and your 105he instants emerald, and had to take em off to install the old aspestolux lining. only joking of course but round here it seems a common practice to disregard the need to have a fire resistant surface to mount the boiler on. But as we are both aware, some of the hotels round here burn really well and at regular intervals, i reckon the Berkley is the next for the tourist entertainment evening this summer, if the colli hasnt burst into flames first. if only the boilers had been mounted properly!!!!!!!!!
lol, i have never fitted a baxi 105, i have repaired enough of them to know them inside out, i even carry some of the spares in stock now 🙄, hmm yes i wonder which hotel will be next, im thinking the palm court or one along that row
O
oldplumber
yep so do i, if you need any diverter diaphragms, exp vessl etc loads inthe van/store. never drop them off the walls now for the expn vssl just pop a vssl alongside, my back doesnt like lifting those beggars on and off the walls
E
emerald
i have 5 diaphrams in the van, and as for the exp vessel, there is no way i would ever bother changing one, although i did have to take an ariston system boiler off the wall last week to change exp vessel, the landlord didnt have it serviced for 3 years.. naughty naughty, the tenent was topping the boiler up and dropped the little black tap handle, and the prv was stuck shut.... BANG, i had to replace prv, exp vessel which was split along the seem, and also pressure gauge
O
oldplumber
more trade for bearmans then
K
kirkgas
in my travels i have come across a few condensing combi's mounted on plywood, and gas safe havnt given me a definitive answer on weather this is AR or NCS what do you guys think?
i think we should look in the appropriate MI's which will state whether it can be fitted on a combustible surface or not, some can and some cant
B
Bernie2
Hmm!
There is something about mounting boilers on fireproof boards somewhere!!
It would be really great to be able to go to one website and download a definitive answer to all those grey areas you come up against.
Working as a contractor for a large Housing Association its amazing how many grey areas you do come up against. And the fighting about them can tire you out at times.
Don't forget a landlord will not usually pay for something he does not have too and any expenditure has to be proven to be necessary. In practise you have to get all the books out and state which reg requires you to do the work and so on. The landlord will usually also get his copy out and check what you say.
The problem is, in the grey areas there is often no one answer. And not only current regs are involved, so you can have a hard time trying to sort it out.
In general though I suppose a lot of gas work can have answers if they always bias toward safety.
For instance, making FFD devices compulsory on all gas fires regardless of how old or what regs they where fitted under?
Imagine the fighting over that though?
There is something about mounting boilers on fireproof boards somewhere!!
It would be really great to be able to go to one website and download a definitive answer to all those grey areas you come up against.
Working as a contractor for a large Housing Association its amazing how many grey areas you do come up against. And the fighting about them can tire you out at times.
Don't forget a landlord will not usually pay for something he does not have too and any expenditure has to be proven to be necessary. In practise you have to get all the books out and state which reg requires you to do the work and so on. The landlord will usually also get his copy out and check what you say.
The problem is, in the grey areas there is often no one answer. And not only current regs are involved, so you can have a hard time trying to sort it out.
In general though I suppose a lot of gas work can have answers if they always bias toward safety.
For instance, making FFD devices compulsory on all gas fires regardless of how old or what regs they where fitted under?
Imagine the fighting over that though?
Last edited by a moderator:
E
evsy01
If boiler is mounted and ply and there's scorching marks then its I'd. If no scorching marks then its ncs
G
gakmonkey
Or it is actually on fire, which is an immediate danger.It would be N.C.S and if signs of scorching would elevate to A.R.
Would only be I.D. if there were indications of severe scorching that may combust.
H
heatman
what alternitive could we use other than the wood ?
M
Mbear
If boiler is mounted and ply and there's scorching marks then its I'd. If no scorching marks then its ncs
Haha, that's isane, u can't just I'D room sealed boilers bcos It's got a black stain beside it, get a grip of yourselves.
I think if a boiler blows up and goes on fire then got alot more to worry about than if it's mounted on ply or not.
Time to start working in the real world folks
(Big rolleyes)
It would be N.C.S and if signs of scorching would elevate to A.R.
Would only be I.D. if there were indications of severe scorching that may combust.
The bolded word shows what classification it is. A possible/potential danger equals AR
A danger that is happening ie fire spilling co is immediate ie ID
It would be N.C.S and if signs of scorching would elevate to A.R.
Would only be I.D. if there were indications of severe scorching that may combust.
The bolded word shows what classification it is. A possible/potential danger equals AR
A danger that is happening ie fire spilling co is immediate ie ID
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B
Bernie2
Have a look at the specs for mounting boilers in timber framed houses. I think they are free, just Google it.
T
tackleburger
Manufacturers instructions. E'G Alpha state in their MIs that no firproof backing is required. If it doesn't state in the MIs then you have to assume a suitable surface must be used. that was the answer given to me by the Corgi guy a few years ago fortunately I had fitted an Alpha CD28C!!
Extract from Vaillant MIs
If the boiler is installed in an unusual location, special
procedures may be necessary and BS 5546 and BS 6798
give detailed guidance on this aspect. The boiler must
be mounted on a flat, vertical wall, which must be sufficiently
robust to take the weight of the boiler. The boiler
may be installed on a combustible wall, subject to the
requirements of the Local Authorities and Building
Regulations.
So plywood is fine.
Extract from Vaillant MIs
If the boiler is installed in an unusual location, special
procedures may be necessary and BS 5546 and BS 6798
give detailed guidance on this aspect. The boiler must
be mounted on a flat, vertical wall, which must be sufficiently
robust to take the weight of the boiler. The boiler
may be installed on a combustible wall, subject to the
requirements of the Local Authorities and Building
Regulations.
So plywood is fine.
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T
tamz
How would you class it if it was mounted on woodchip 😀
T
tackleburger
If Mis don't state it can be mounted on a combustable wall the relevant BS would apply. that's how I always work. if i don't have the MIs and am not familiar with the appliance then i download it. If however there is a clear problem AR/ID boiler.
This is all true and i have been there as well on many occasions. But getting the MIs out often settles the matter. MI's always prevail over the current regs. In this case if the regulation states a fireproof surface is to be used and the Mi's say a particular appliance doesn't you go with the Mi's.
Hmm!
There is something about mounting boilers on fireproof boards somewhere!!
It would be really great to be able to go to one website and download a definitive answer to all those grey areas you come up against.
Working as a contractor for a large Housing Association its amazing how many grey areas you do come up against. And the fighting about them can tire you out at times.
Don't forget a landlord will not usually pay for something he does not have too and any expenditure has to be proven to be necessary. In practise you have to get all the books out and state which reg requires you to do the work and so on. The landlord will usually also get his copy out and check what you say.
The problem is, in the grey areas there is often no one answer. And not only current regs are involved, so you can have a hard time trying to sort it out.
In general though I suppose a lot of gas work can have answers if they always bias toward safety.
For instance, making FFD devices compulsory on all gas fires regardless of how old or what regs they where fitted under?
Imagine the fighting over that though?
This is all true and i have been there as well on many occasions. But getting the MIs out often settles the matter. MI's always prevail over the current regs. In this case if the regulation states a fireproof surface is to be used and the Mi's say a particular appliance doesn't you go with the Mi's.
Last edited by a moderator:
M
Marsdendean
We fitted a Ideal Classic on wood before, as the instructions stated can be fitted to combustible material.
Anything regarding flue distances etc the instructions over ride Gas rregs
Regarding scorching of the timber, i would class that as AR
Anything regarding flue distances etc the instructions over ride Gas rregs
Regarding scorching of the timber, i would class that as AR
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