Hi to John.g.
You recommend ...Try and look into the small feed and expansion tank in the Attic and see if water is flowing out of the vent pipe or drawing air into it, you will have to hold a "glass" full of water...
I can do this test, as my CH system that has a similar issue, but only at the bathroom radiator.
Please can you enlighten me on what the outcome proves and what the solution would be?
As I have noticed the copper pipe that runs upto the expansion tank gets warm /hot. would this draw air the the system as it cools down?
Best regards
You recommend ...Try and look into the small feed and expansion tank in the Attic and see if water is flowing out of the vent pipe or drawing air into it, you will have to hold a "glass" full of water...
I can do this test, as my CH system that has a similar issue, but only at the bathroom radiator.
Please can you enlighten me on what the outcome proves and what the solution would be?
As I have noticed the copper pipe that runs upto the expansion tank gets warm /hot. would this draw air the the system as it cools down?
Best regards