can anybody tell me if the british standard regs regarding the installation of the condensation pipe from a boiler have changed and now don't permit the 22mm overflow pipe to pass through a wall to outside the property? after being an installer for the last 13years and working to a set standard of what we are told by manufactures to be the right way to install condensation lines our company has now been told by a so called independent specialist who work on behalf of a major housing assocition we are wrong and that 32mm pipe has to be taken in the the house through the wall because the regulation have changed! but after phoning corgi and other boiler manufactures who know nothing about this change we are still none the wiser?
condensation pipe regulations
- Thread starter ian172
- Start date
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I'm fitting them all the time and have never heard of this fiction. It's more than likely a requirement of the HA. I always run 21.5 through the wall and convert straight to 32 outside.
Whichever boiler make you install fella, just read the MI's they take precedence. After all, they have spent millions on R+D to ensure their boilers are installed correctly 
Some organisations/body's like to think they are better than most people in the trade. Hearsay, rumour, or down-right carp is fed from a guy with a badge who knows very little...
We all use 21mm inside upgrading to 32mm outside.... power to the workers, up the tooting popular front, come the revolution brother
Some organisations/body's like to think they are better than most people in the trade. Hearsay, rumour, or down-right carp is fed from a guy with a badge who knows very little...We all use 21mm inside upgrading to 32mm outside.... power to the workers, up the tooting popular front, come the revolution brother
N
namsag
Jopbsworth who will prob fight his case even though he cannot produce proof, at least you can show him manufacturers instructions which take precedent
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there is no BS for condense waste.
as rightly said its covered by Manufacturers Instructions.
as rightly said its covered by Manufacturers Instructions.
Ian,
I have access to British Standards. If you can possibly get the number of the standard that this guy is referring to then I can confirm what it says.
I must also say that British Standards are not law. They are advice but can be made law by being called up in other legal requirements such as building regs and of course Acts of Parliament.
Under the copyright regulations I am permitted to quote a percentage of a British Standard so here we go. I have found a new, recent, BS referring to installation of Gas boilers not exceeding 70kW. It is BS 6798:2009. This maybe what is being referred to and I believe that it has been amended to cover the amount of frozen condense pipes this winter. (I believe that you "gas guys" had quite a few?)
The standard (as do many others) refers to the reference to manufacturers instructions, which take precedence over the BS.
Paragraph "4.3.3.2 Condensate removal by gravity. The condensate drainage pipe connected to the condensate drain on the boiler shall have a nominal diameter of 22mm O/D or as recommended by the appliance manufacturer to promote the clearance of condensate."
It then goes on to say that many boilers have a condensate syphon fitted as part of the condensate trap and also that external pipework should be as short as possible and not longer than 3m to prevent freezing. Then it says,
"If a boiler does not include a syphon then any external condensate external pipe shall be increased to a minimum of 32mm nominal diameter to reduce the risk of freezing."
and then the get out clause,
"In external locations where the condensate drainage pipe is less than 32mm nominal diameter the pipe shall be protected with waterproof insulation."
It also says that in an unheated location i.e. a garage then all pipes shall be treated as external.
Good luck with your battle!
thinks: If I wanted to be a "Consultant Expert", I would read up on new standards, miss-interpret them and then sell my advice...but no one would ever get away with that surely?
I have access to British Standards. If you can possibly get the number of the standard that this guy is referring to then I can confirm what it says.
I must also say that British Standards are not law. They are advice but can be made law by being called up in other legal requirements such as building regs and of course Acts of Parliament.
Under the copyright regulations I am permitted to quote a percentage of a British Standard so here we go. I have found a new, recent, BS referring to installation of Gas boilers not exceeding 70kW. It is BS 6798:2009. This maybe what is being referred to and I believe that it has been amended to cover the amount of frozen condense pipes this winter. (I believe that you "gas guys" had quite a few?)
The standard (as do many others) refers to the reference to manufacturers instructions, which take precedence over the BS.
Paragraph "4.3.3.2 Condensate removal by gravity. The condensate drainage pipe connected to the condensate drain on the boiler shall have a nominal diameter of 22mm O/D or as recommended by the appliance manufacturer to promote the clearance of condensate."
It then goes on to say that many boilers have a condensate syphon fitted as part of the condensate trap and also that external pipework should be as short as possible and not longer than 3m to prevent freezing. Then it says,
"If a boiler does not include a syphon then any external condensate external pipe shall be increased to a minimum of 32mm nominal diameter to reduce the risk of freezing."
and then the get out clause,
"In external locations where the condensate drainage pipe is less than 32mm nominal diameter the pipe shall be protected with waterproof insulation."
It also says that in an unheated location i.e. a garage then all pipes shall be treated as external.
Good luck with your battle!
thinks: If I wanted to be a "Consultant Expert", I would read up on new standards, miss-interpret them and then sell my advice...but no one would ever get away with that surely?
I have recently been on an Alpha Boilers manufacturers course.
On installation they would like to see that if you are increasing to 32mm, then it should be done 'before' it goes through the wall.
It should also be sealed to stop poc. from escaping through the condensate trap.
Andy.
On installation they would like to see that if you are increasing to 32mm, then it should be done 'before' it goes through the wall.
It should also be sealed to stop poc. from escaping through the condensate trap.
Andy.
thanks for all you replys it sounds like we are all singing from the same book on this apart from the so called consultant!! who seems set on getting his own way on this point. i too have also been on the alpha course as we are a main installer of there boilers who did suggest bringing the 32mm pipe right to the boiler to rule out possible freezing but have said they don't intend on including it in there MI and also there technical call center staff agree 22mm is fine to pass through a wall? as a company we look after approx 2500-3000 boilers in rented homes and in every case of a frozen condense pipe i have been to i've never found one frozen in the wall! and all have been down to bad installation if you think about it nearly every boiler now has a built in syphon and discharge the water at above room temp how can it freeze that quick?
The reason the water freezes so quick, is that the water has been heated and the oxygen molecules have been converted from liquid to a gas the most part Without the oxygen in the water if freezes quicker. Hence, if you have a party and run out of ice-cubes, put some boiling water in your ice trays and put them in the freezer, they will freeze quicker So, your voddy + coke will be nice and chilled when served.....
Without the oxygen in the water if freezes quicker. Hence, if you have a party and run out of ice-cubes, put some boiling water in your ice trays and put them in the freezer, they will freeze quicker So, your voddy + coke will be nice and chilled when served.....
Thats what the bubbles will be in your voddy + coke
Thats what the bubbles will be in your voddy + coke
Thats the CO2 that makes the coke fizzy Remember the Sodastream machine?
Yes,
I had the cream soda and irn bru flavours Just buy the bottles from morrisons now, the flippin gas refill was a fortune !!!
I had the cream soda and irn bru flavours
Just buy the bottles from morrisons now, the flippin gas refill was a fortune !!!DIYnot Local
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