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Evening folks! Can anyone please shed any light on my scenario i've found myself in? I went to a job yesterday afternoon to check 2 radiators which weren't heating properly and havent heated properly for years, They were both at the end of the line on a 33 year old system! The boiler is still running and the chap has never had to change the pump in all that time! Anyway the the flow to these 2 rads was fairly hot but nothing on the return, I suspected the pump may have got a bit tired or there could have been a block of some sort as pipes drop down wall to feed 1 rad then in concrete to the final rad. there were no drain offs so drained rad and connected hose to valves, system air locked and couldnt drain tank. syphoned tank to empty, then back filled up to tank to prove the flow and return had no restriction. Still no joy so today i changed the pump and still no better, the only way i could get good circulation was to turn off every rad apart the 2 in question only then did the return get hot, soon as i opened a few other rads a 1/4 turn the temp dropped to the same as before
The pipe run comes up out of boiler, accross and around bedroom, goal posts over three doors before dropping down a wall again to feed the last 2 rads
At the cylinder there is a manual selector valve for heating or hot water! No trvs, room stat or anything also no open vent, just gravity feed and expansion.
Hope i make sense to you, and will be most grateful for any kind of your suggestions. There seems to be some top heating lads here so thanks inadvance!!!
The pipe run comes up out of boiler, accross and around bedroom, goal posts over three doors before dropping down a wall again to feed the last 2 rads
At the cylinder there is a manual selector valve for heating or hot water! No trvs, room stat or anything also no open vent, just gravity feed and expansion.
Hope i make sense to you, and will be most grateful for any kind of your suggestions. There seems to be some top heating lads here so thanks inadvance!!!
