2006-12-03 21:50:07 · 7 answers · asked by Anonymous in Home & Garden ➔ Maintenance & Repairs
If you have a back boiler, each time it is serviced the gas fitter will look for a ventilator with a 100cm cubed air flow, or 'free space', it is usually 230X150 mm in size and rectangular.
Rule of thumb says that it's 'size dimensions' should add up to 360, ie 180x180mm or 260x100mm or tubular being 100mm diamitter (360 degrees).
It can be high level or low level often behind the TV in the corner out of sight.
It should also vent to the outside, and not into the wall cavity if you have one!
If you have this, then the system should pass easily.
If you don't have a vent, why has the boiler not been serviced for the last 5 years, or how did it pass a vent test?
If the vent is missing or blocked off, or covered with IVY on the outside, or the wind is blowing into the room directly through it it could still fail.
Dont forget the vent is to allow any potential fumes out, not to blow fresh air in, in theory it will do both, but a cowel is usually needed on the outside to prevent the wind blowing in directly.
If you are renting the property, your landlord should arrange a service for your back boiler every year.
If you own the boiler, consider up grading some time soon, as parts are getting hard to get for back boilers so if it breaks at the wrong time you could end up in crisis.
I would recommend a 'condensing' combi boiler, they are more efficient and will save you in gas bills. They are small and quiet and can be repaired easily.
These are fitted to an outside wall in any room or garage, and they have a balanced flue. This is when the boiler sucks in air and blows out fumes simultaniously.
You could then block off your vent and get rid of your old gas fire.
Buy a focal point fire instead, which looks modern and smart and is really an ornament rather than a great heat provider.
This is not some crazy law, the police wont come and arrest you!
The gas appliance should be condemed by any good corgi (registered gas installer) gas fitter who cares. They are the experts.
Most people have now diched old back boilers due to the fumes and lack of efficiency.
These are gas regulations not law. But the gas fitter is justified in cutting you off.
Your boiler may run for many years yet however these issues may arise.
2006-12-03 22:16:20 · answer #1 · answered by My name's MUD 5 · 0⤊ 0⤋
The vent has to be a certain size at least 180/180 mm also the out side air brick should be connected to the inside vent.British gas have just said to, me that in June 2008 may heating system will be condemned if i don't get this updated. Back boilers are expensive to run any way.
2006-12-03 22:11:38 · answer #2 · answered by Anonymous · 0⤊ 0⤋
It is essential that you have an air vent for a back boiler because your boiler burns a mixture of gas and air, and natural gas needs more air than the old towns gas. . If your boiler is deprived of a supply of air it mwill start to burn all the air up in the room the boiler is in. this in turn can make you feel drowsy, and eventually it can suffocate you.
2006-12-04 10:45:13 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Please do not listen to any of the above rubbish.
No air vent is required in a room or internal space in which an open flued appliance not exceeding 7kw ( 25,000 Btu/h ) is installed
As your back boiler and fire is opened flued ie. into your chimney with a linner up the chimney then no other vent is required.
If you ever replace with a decorative gas fire then purpose provided ventilation of at least 100cm/squared must be provided if the appliance is rated up to 15kw.
2006-12-04 07:31:33 · answer #4 · answered by Sparky 3 · 0⤊ 0⤋
Sounds ideal to me. i could think of that there could be a genuine probability of the warmth from the vent inflicting a fireplace to the overhang if there is something that's produced from this is flammable. to think of of it i haven't seen one vented in the way which you describe the stacks are consistently a set distance above the roofline. If it replace right into a "boiler" guy that advised you this he's probable stunning. they have their very own code specifically for boilers. in case you question the guy's judgement i could call up yet another boiler guy or look for advice from with them. the reason I say he's probable stunning is he ought to be liscensed and bonded to place in boilers and if he screws up an installation he could desire to positioned his liscense in jeopardy.
2016-12-29 21:03:39 · answer #5 · answered by radosevich 3 · 0⤊ 0⤋
there is a calculation to work out vent size requirements.
5 centimetres squared per kw heat input over 7kw.
2006-12-04 01:08:37 · answer #6 · answered by roman 1 · 0⤊ 0⤋
You must have one, it is mandatory, by law
2006-12-03 21:53:54 · answer #7 · answered by Agustin-Jean F 4 · 0⤊ 0⤋