Hi All
My gas back boiler, a Glow Worm BBU 50, was making a little noise recently and reading around suggested it might be kettling. I drained a little water from a rad (which was clear, not black or rusty) and left a nail in it for a couple of days, which rusted. I hence concluded that they're wasn't enough anti-rust treament in the system.
I therefore decided to add a boiler noise reducer/descaler and an anti-rust treatement, randomly choosing Sentinel X200 and X100, respectively, both as concentrates injected through a rad bleed screw as per the instructions.
Since then (about two weeks ago), my back boiler clanks and bangs when running, which it never did before, though rads and water are both heating fine. The banging calms down a little as the system gets hot. I've bled all the radiators, all of which were fine. Being a back boiler, I've no idea how I might bleed the boiler itself? Is there anything else I might do. As the boiler is due a service anyway, I've got someone coming round in a week or so. Even so, I'd like to sort it beforehand if possible.
System is vented rather than sealed, pump appears to be running.
Have I dislodged some limescale and partially blocked a pipe somewhere?
Any other ideas?
Cheers, Jon.
My gas back boiler, a Glow Worm BBU 50, was making a little noise recently and reading around suggested it might be kettling. I drained a little water from a rad (which was clear, not black or rusty) and left a nail in it for a couple of days, which rusted. I hence concluded that they're wasn't enough anti-rust treament in the system.
I therefore decided to add a boiler noise reducer/descaler and an anti-rust treatement, randomly choosing Sentinel X200 and X100, respectively, both as concentrates injected through a rad bleed screw as per the instructions.
Since then (about two weeks ago), my back boiler clanks and bangs when running, which it never did before, though rads and water are both heating fine. The banging calms down a little as the system gets hot. I've bled all the radiators, all of which were fine. Being a back boiler, I've no idea how I might bleed the boiler itself? Is there anything else I might do. As the boiler is due a service anyway, I've got someone coming round in a week or so. Even so, I'd like to sort it beforehand if possible.
System is vented rather than sealed, pump appears to be running.
Have I dislodged some limescale and partially blocked a pipe somewhere?
Any other ideas?
Cheers, Jon.