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If the boiler has no internal trap then this component will not be safe in my opinion as it might vent naughty gas inside the building....which is what all the legislation is about oreventing. centralheatking

Hold on. Is it illegal for him to work on the waste pipe if the boiler does have its own trap? And can you link us to an authoritative website explaining the legislation as this is starting to make me think that this rule means a non Gas-Safe plumber won't be able to work on pretty much any waste pipe if this is the case, given that nearly all waste systems are ultimately interlinked.
 
  • Agree
Reactions: Tim Court
add a tundish on the condensate pipe just above the 90 bend into the clamp?
https://www.NoLinkingToThis/p/mcalpine-tundish-19-23-x-19-23mm/5684v#_=p
 
I think what it will be down to is pretty much the same as why we don’t encourage people to take covers of boilers some of them form combustion seals some of them don’t the same way that some boilers have traps and some of them don’t. I think to err on the side of caution is a sensible approach
 
I think what it will be down to is pretty much the same as why we don’t encourage people to take covers of boilers some of them form combustion seals some of them don’t the same way that some boilers have traps and some of them don’t. I think to err on the side of caution is a sensible approach
No good to me. I'm a non-gas plumber so if I'm asked to work on an above-ground drainage system that incorporates a condensate pipe I need to know whether I'm legally allowed to or not. If I err on the side of caution and refuse to do so without good reason then I've just lost my business.
 
No good to me. I'm a non-gas plumber so if I'm asked to work on an above-ground drainage system that incorporates a condensate pipe I need to know whether I'm legally allowed to or not. If I err on the side of caution and refuse to do so without good reason then I've just lost my business.
Agreed. Nobody's given a straight answer to my #17.
 
the gas fluing system goes to the first air break after the condensate trap. So if the trap is in the boiler and the outlet drops into a waste pipe, you can do what you like with the waste pipe even replace it with a bucket.
However all the building regs for drainage apply for the discharged water.
 
the gas fluing system goes to the first air break after the condensate trap. So if the trap is in the boiler and the outlet drops into a waste pipe, you can do what you like with the waste pipe even replace it with a bucket.
However all the building regs for drainage apply for the discharged water.
Thanks, that's clear enough.
 
My condensate waste has only frozen up once and caused the boiler to switch off, this was on a particularly cold night. I thought of the following way of stopping the boiler switching off in the event of it freezing up again. The pipe drops out of the boiler vertically and then runs horizontally for about 900mm before it goes through the external wall into the drain. If I was to put a tee in the horizontal run with the branch set at 45 degrees and put a bucket under the tee on very cold nights. If the pipe should freeze up then the condensate would still be able to run out through the tee and the boiler shouldn't then switch off. Does anybody see any problems with this idea
Yes I do see problems with this idea. What boiler do you have?
 

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