Search found 7 matches

by corkee
Sat Aug 18, 2007 8:04 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Are British Gas ripping me off?
Replies: 7
Views: 6606

Check your contract, but I think you may have a 30 day cooling off (!) period within which to cancel and get your deposit back - bit like double glazing etc.

Sure you'll find an independent would charge say £1500-£2000?

Best of luck....
by corkee
Sat Aug 18, 2007 7:58 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Central heating system pressure
Replies: 1
Views: 3498

AFAIK you should pressurise to 1 bar with pump off and system cold.

It should rise to about 2 bar when fully hot (due to water expanding and thus displacing the air in the expansion tank).
by corkee
Tue Aug 14, 2007 10:35 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Hot water cylinder coil balancing and connection questions.
Replies: 0
Views: 6713

Hot water cylinder coil balancing and connection questions.

I'm fitting a new hot water cylinder (vented) fed from a condensing boiler. My old cast iron (Ideal Concorde WCF) boiler fed the old cylinder. Two questions: 1 The old system had a gate valve on the return from the coil, presumably to 'balance' the circuit. All new system diagrams I've researched re...
by corkee
Mon Aug 13, 2007 9:38 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Sealed system safety valve venting requirements - need help.
Replies: 2
Views: 4041

Thanks for that,. I am thinking of feeding say, 1 metre of 15mm Copper pipe from the relief valve outlet into the old 22mm overflow pipe (from the now redundant F&E tank) and adding an elbow at the outside end to turn the outflow towards the wall. My thinking being that the gap between the 15mm ...
by corkee
Tue Aug 07, 2007 10:06 pm
Forum: Brazing, Soldering and Welding Forum
Topic: Soldering
Replies: 7
Views: 13209

I've got a Camping Gaz torch set which has a soldering iron bit, heated by the gas flame.

Good for plumbing too!
by corkee
Sun Aug 05, 2007 9:11 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Fitting flexible pipes to radiator valves
Replies: 5
Views: 78993

As far as I know, you shouldn't use braided flexibles on any part of a central heating circuit. They're not up to the job as they're really only for occasional heating duty, eg Hot water taps supplies as fitted to monobloc mixers. The inhibitors in central heating systems may also have a detrimental...
by corkee
Sun Aug 05, 2007 12:52 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Sealed system safety valve venting requirements - need help.
Replies: 2
Views: 4041

Sealed system safety valve venting requirements - need help.

Could someone advise me what the usual venting/drain arrangements are for a safety valve fitted to the expansion vessel/pressure gauge assembly? All I know is it has to be sized to suit the expansion vessel supply pipe, in my case, 15mm. (Fed from a 22mm/15mm reducing tee near the pump inlet). I've ...
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