I was wrong, it is leaking from the boiler but intermittently. Maybe
condensate then?

"Graham Jones" wrote in message
...
Thanks for all your replies. Luckily the boiler is in the garage and not
in the house, but I will put a CO detector in there. The outside of the
flue does have a collar and is also sealed with brown silicon. No rain
today and no leaks, so definitely rain water.

The water is coming from the front right corner of what the installation
manual calls the air box, where the fan and condensate trap are located.
Does this provide any clues?

Also on a side note, why do boilers and fires require flues but not gas
ovens? I have always wondered about this.


Thanks,

Graham




"Graham Jones" wrote in message
...
Hello,

I think that when it rains hard in a certain direction the flue on my
condenser boiler lets in rain water. This then runs through the boiler
and drips out from the bottom front corner. Does this sound possible? It
is definitely rain water as it never happens when it is not raining.

Any ideas on how I can prevent this?


Thanks,

Graham