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Hello,
The condensate pipe on my Baxi Duotec 28 is perished and split. While I can find a plumber who can order a new part and get it fitted, I could manage by catching the condensate and funnelling it into the portion of the condensate pipe that is not perished. My concern is that flue gasses might also be coming down the condensate pipe but escaping into my kitchen, which is not acceptable even for a few hours.

My boiler is currently shut down until I know if I have a safety problem.

Is the condensate pipe that feeds into the top of the condensate trap supposed to be gas-tight to prevent flue gasses entering the house?

Just to re-iterate - I will be getting a qualified engineer to do a proper fix. The question is just whether things are dangerous until they get here.

thanks very much for your advice.
Ben

general comments
you need lungs full off only combustion gas to be dangerous by replacing too much off the oxygen /air you are breathing
you wont get combustion gasses in water i wouldnt have though if you did it would be perhaps 5000ths less than a concern it would also need to be a gas as in not visible or bubbling through the liquid

To reassure you I have a condensate bypass valve. This allows you to divert the condensate flow to an indoor bucket if the external section of the drain pipe freezes. When the valve is on bypass the flow is to an open ended tube and the condensate comes out of the tube into the bucket. Now I have never noticed any smell of effluent gasses from the boiler so I should not worry. The condensate is basically a high alkaline mix which can cause skin problems like eczema. Some health nuts drink Alkaline water for some mumbo-jumbo reason. You should start bottling yours and make a few quid

DWD

You'll be fine with the bucket.

Fixing the pipes is pretty easy, condensate pipe is cheap as chips, as are the fittings and you just need some solvent cement to join them.

Do you mean the condensate trap in the boiler?