Recent content by Graham46

@ Boilerman2 As a law-abiding citizen I was about to go and hand myself in at the local “nick” but was not certain that they would take my confession seriously. So, as you suggest, I have taken a look at the G3 building regs. As far as I can see they only refer to the design and...

Well, guys, despite your reticence to help, I found the problem and fixed it. Remember in the first place I only wanted advice on how to check whether the cylinder stat was working or not. With everything switched to “on” for DHW I just used a mains tester (not a multimeter) and found live...

Good morning, gentlemen The cylinder is an IMI Range Tribune 150 litres manufactured in 1988. Very similar to but not exactly the same as the photo in Agile's profile. The thermostat is a Honeywell L641A and is held in position with a metal strap. The "typed" comments on the label...

I can borrow a multimeter and yes I do know how to use one. Please tell me what readings I have to check to see if the DHW stat is shot or not. As a matter of interest, if it is, as you say, ILLEGAL to work on an unvented system if not fully qualified, why is this Health & Safety obsessed...

@gas4you Thanks. I thought I remembered correctly from when I replaced the zone valve motor but always just worth checking. And a good tip re the fuse! @steved101 Well I just Googled "Honeywell L641A" and Screwfix do sell them off the shelf at £19.99. Latest version seems to have...

@Agile Thanks for your concern. However, when the zone valve was stuck open for several days and the water got REALLY hot because the CH was on all the time, the tank did not explode. When I locked the DHW zone valve I knew what I was doing and only left it on long enough to get the water...

Thanks for your comments. I may have misled you somewhat re the zone valve. This was replaced about six months ago (by a qualified plumber) as it was sticking open and the water was getting too hot while the CH was on. The whole system has been working fine until this morning. As it...

The system is 20 years old comprising pressurised DHW tank in airing cupboard, gas boiler in garage and recently replaced zone valve to the hot water tank. The CH controls are firing the boiler OK but the hot water controls are not. I have read the Wiki and FAQs and it seems likely that the...

@JohnD I was wondering exactly how to introduce the X400. Is a "couple of bucketfuls" most of the water in the tank? I was thinking of just leaving a couple of inches in the bottom - say up to the "out" pipe level. Then add the cleanser, switch on the water again to help mix it up and also...

@JohnD Dead right. Lots of nice rust-brown "mud" in the bottom of the header tank all now baled and sponged. Lovely job with no headroom in the airing cupboard working blind or with torch and mirror! Then flushed all ground-floor rads with water only. This was amazingly clean: a light straw...

Thanks everyone for your further comments and suggestions @JohnD I just tried your water into a glass experiment and no, I only got a few big bubbles as the water hit the bottom of the glass which went in a couple of seconds leaving the water absolutely clear. I know exactly what you mean...

Thanks for your comments SortedPlumbing and ChrisR As I said, this is a wonderful Bovis-built house and the header tank is on a shelf at the top of the airing cupboard. There is only about 4 inches from the top of the tank to the ceiling in the cupboard so I can't really see whether there is...

…that is the question. I've just refitted the family bathroom of our 19-year old Bovis house in the hard water area of Hertfordshire. The wife wanted a nice shiny chrome heated towel rail instead of the radiator. We got a cheap and cheerful Kudox one from B&Q which is now repositioned on...

Yes I am new to CONTRIBUTING to fora (that is the plural isn't it, Scat?) but not new to watching, listening and hopefully learning from the sidelines - mainly a sharedealing site. Unfortunately, there too, the discussions usually end up in personal slanging matches rather than sticking to the...

Blimey Never used a forum before. Didn't realise we had an audience of 122 and rising. It was fine till JohnD came in on the act. Tourette's is something about facial tics and obsessive behaviour according to Mr Google. And he is definitely not a Corgi. A million thanks for your help on...