Filling condensate trap

[Dan Robinson]

Any air pressure in the waste system pipe work will affect the trap on the boiler. Hence the condition of the waste pipe, soil stack and soil stack venting will have an effect on the trap on the boiler. Hence the question where does the flue become waste and the "legal" responsibility change from GasSafe to ordinary plumbing

That would depend on the boiler and the trapping arrangements.

 

[bernardgreen]

Based on that then, depending on the boiler and the trapping arrangements, a situation might arise where any work on the waste pipes under a sink would be "illegal" if the plumber was not GasSafe registered ?

 

[Dan Robinson]

Not necessarily.

Rtfm

 

[bernardgreen]

Not necessarily.

Hence possibly yes

Rtfm

I did, and it mentions a sink as being an air break. But sink full of water rushing down the waste pipe past the end (?) of the condensate pipe might just create enough suction to suck the trap in the boiler dry. ( until the trap refilled after a few minutes of combustion and condensing )

 

[Dan Robinson]

did, and it mentions a sink as being an air break. But sink full of water rushing down the waste pipe past the end (?) of the condensate pipe might just create enough suction to suck the trap in the boiler dry.

That's not an air break then.

 

[Dan Robinson]

Perhaps you should read up on trap depth requirements.

 

[Dan Robinson]

And siphonic traps.

 

[Dan Robinson]

In other words.


RTFM.

 

[bernardgreen]

RTFM.

I did

 

[Dan Robinson]

What boiler is that?

 

[bernardgreen]

J&S Reno

Intergas seem to be more detailed in their MI by implying that a tundish should be fitted between boiler and waste system. Hence a clear and decisive demarcation between flue system and waste system.

They also state that the condensate trap must be filled with water before applying power to the boiler

 

[Dan Robinson]

J&S Reno

 

[AGAS]

 

[ianmcd]

Flue or trap?

Dan there are a few that instruct you to pour 1L of water in the flue outlet, Alpha for definate, have seen it in the MIs on others too

 

[Dan Robinson]

I know mate, which is why I asked the question. I seem to recall that Isars said to put it in the flue.