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by techysci
Fri Oct 24, 2008 1:19 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Thanks Plumbbob
Replies: 2
Views: 2337

Radiators

Hi Plumbbob Initially three radiators downstairs didn't get very hot but looking at other posts on the website I closed the valves on some of the rads upstairs and they quickly got very hot downstairs. Since then, with all valves open, not a problem. Still think the system layout is probably not opt...
by techysci
Thu Oct 23, 2008 5:00 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Thanks Plumbbob
Replies: 2
Views: 2337

Thanks Plumbbob

Hi
Just wanted to say thank you to Plumbbob for suggestion about pump. Turned it down and now no problem. Central heating the quietest it has been for years!
by techysci
Sun Oct 19, 2008 3:35 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Lossing pressure in combi boiler
Replies: 1
Views: 3141

You say you have no leaks but have you checked inside the boiler itself. My experience with this sort of slow loss of pressure is due to a leaky heat exchanger which doesn't show up with drips. Over time the one I had corroded and I needed a new boiler. You don't say how long you have had it or if t...
by techysci
Sat Oct 18, 2008 7:15 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Radiator fills up with air when hot water comes on!
Replies: 3
Views: 3871

Major problems all round

Thanks for the posts. I've checked both the feed and expansion tank and the cold water tank levels and they are fine so next I'll try the pump speed which has three speeds (currently on no.3). It is a gravity fed, pumped system using a floor standing Mexico boiler. The whole system seems to have to ...
by techysci
Fri Oct 17, 2008 7:21 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Radiator fills up with air when hot water comes on!
Replies: 3
Views: 3871

Radiator fills up with air when hot water comes on!

Does anyone have any suggestions as to why the radiator on my landing sounds like it is emptying its water every time I turn on the hot water. It is the first radiator connected to the boiler. It does not just sound like it is emptying when I bleed it, it is usually practically empty of water. There...
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