Greenstar Ri No filling loop

[cjg]

Didn't read/see that, oh well UKPlumbs is an open house.

thats why i alllways ask do you own the house or rent, as if its rented you have to ask premission to do work on it,
as i know some one did work on one and then big do. (it was ok before you started) you make it right at your expence

 

[John.g]

Strange how the gas engineer though couldn't figure out if it's a (semi) sealed gravity system or not and suggest a fix, these systems are very popular around here and appear to work quite well.

 

[gmartine]

Strange how the gas engineer though couldn't figure out if it's a (semi) sealed gravity system or not and suggest a fix, these systems are very popular around here and appear to work quite well.

Not seen many but what's the point of them as the system still basically operates at atmospheric pressure and allows oxygen ingress?

 

[John.g]

A lot more forgiving than the full pressurised system as the max pressure even when hot can be < 1bar, often used to cure pumping over in gravity systems due to circ pump change etc although systems like my combined vent and cold feed cures 99% of problems, oxygen ingress has never been a problem with some of my rads over 40 years old with only the odd drop of inhibitor added over the years. Several Plumbing aquantinces tell me they see more corrosionproblems with pressurised system especially the ones with auto top up.

 

[gmartine]

That all sounds quite plausible but you'd expect auto-top up systems to have corrosion issues if the additive concentrations were allowed to decrease. That's a basic maintencance rather than a system design issue, sealed or pressurised systems still have an efficiency advantage.

 

[lukeadams]

hi all so I have an update, another engineer appointed by the council visited yesterday, I wasnt in when he arrived but he apperantly fixed the boiler Not sure exactly what he did but the radiators were still warm when i got in from work however another issue has arisen since he left.... the feed to the cold water tank seems to have an airlock in it, tank is empty and water is dripping into it, the mains supply is fine in the kitchen sink. Not sure how to fix an air lock in the feed to the attic tank. Google only has results when its the taps that have the airlock and not the feed to the tank. Anyone have any suggestions on what possibly could have happened and how to fix... i realise without knowing what he did its not much to go on

 

[ShaunCorbs]

Call them back out

 

[John.g]

Throw a gall or so of water into the tank until its sorted out, this tank should never need topping up once filled.

 

[Ben-gee]

Is the ball valve stuck up in the air?

If so push it gently down and it should start refilling.

 

[lukeadams]

issue still ongoing, appeantly the boiler has a very slow leak in the syphon/trap. also the main tank in the attic isnt filling so once it empties we've no water at all upstairs. Apperantly the engineer had to order the part from the UK and we are currently expecting him to arrive today with the part to fit it not holding my breath though. Cant for the life of me understand why he is opting to replace a part in a 10 year old boiler rather than recommending to the council that its replaced. Boiler was commisioned into service on 29/03/2012.

 

[gmartine]

Apperantly the engineer had to order the part from the UK and we are currently expecting him to arrive today with the part to fit it not holding my breath though. Cant for the life of me understand why he is opting to replace a part in a 10 year old boiler rather than recommending to the council that its replaced. Boiler was commisioned into service on 29/03/2012.

...cos it's a perfectly serviceable boiler that just needs a relatively simple fix.