I have a weird problem that started about 2 months ago.
AFter my boiler is on for hw or htg (but for hw mainly it seems worse) after about 1/2 hour water starts to shoot out of the vent pipe (for about 5 seconds at a time) and then more water back down the cold feed pipe. This happens every 5-10 minutes and is very loud and annoying. Why is this happening and is there anything I can do to cure it?
AFter my boiler is on for hw or htg (but for hw mainly it seems worse) after about 1/2 hour water starts to shoot out of the vent pipe (for about 5 seconds at a time) and then more water back down the cold feed pipe. This happens every 5-10 minutes and is very loud and annoying. Why is this happening and is there anything I can do to cure it?