RJH wrote:
The condensate from my combi boiler drains via a connection at the kitchen
sink waste. Whenever the sink is emptied (etc.) this produces a bubbling sound
from the boiler, which I'd guess is caused by suction acting on the condensate
reservoir/trap inside the boiler.

I'm not sure if it's doing any harm, but was thinking about the best way to
stop this happening, short of relocating the drain pipe. Suggestions please .
.


I dont think its doing any harm. I dont think the condensate trap is
there to provide any sort of fume barrier, its just to turn a steady
trickle of condensate into an intermittent rush (which is much less likely
to freeze up). If its making a bubbling sound this would imply its just
drawing air through condensate that is still in the trap rather than
emptying the trap.

I could be wrong though.

Tim

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