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I have a Baxi 51/3 RS boiler (standard system with HW Cylinder) I've been having what appearing to be circulation problem for some time as the rads do not get very hot (and take a long time to warm up) and the HW also takes a dogs age to warm up. The boiler also kettles (sounds like it's...

Really? Is that because modern boilers are unreliable and expensive to repair?

Hi, I think my CH system is coming to the end of it's life. The rads aren't getting very warm (even after numerous manual flushes, sludge removers, new pump etc...) and the gas bills seem very steep! I could also do with replacing the cylinder as it's the type with a red jacket!. I want to...

Thanks Chaps... I'll contact MK tomorrow.

Hi, Does anybody now where i can get MK Chroma Plus fittings from? http://www.mkelectric.co.uk/PDF/technical/CHROMA_PLUS_prod.pdf I'm nearing completion of my Dining Room/Kitchen Extension and i've just been to B&Q to try and get some but i've been told they are discontinued!!!!!!! I would...

Hi, What's the best product available for restoring central heating efficiency. (especially circulation problems). I've heard that Calchem is good be there seems to be many on the market. Has anybody had good sucess with a particular brand? Thanks

He never said that he'd disconnected the ring at a socket and i didn't see him do it, that's why i'm a bit confused. Maybe it was never a ring in the first place. I'll give him a ring once he sends me the completion certificate.

why 16A?

ELZ4742: Pls see previous post. The second MCB doesn't do seem to do anything.

Thanks for the replies. In response to a previous question, with the first MCB off and the second on, no sockets work in the house. So i can safely assume that it IS NOT 'dual source of supply'. I'm just a tad confuded as to what he has done and why. Maybe i should give him a call to...

Out of interest, why would a dual source of supply dangerous. Isn't the same as a ring main. Thats dual sourced (i.e. i.e Current will go clockwise or anticlockwise around in a ring to the socket.)

I'll check it this evening and let you know. Based on your last response i'm hoping it doesn't. Are you saying he should have physically broken the ring somewhere in the middle to create the two seperate radials? I guess he can't do this at the CU?

I should have mentioned that he has said to leave the second MCB off until the fault is found.

You're getting me worried now. Are you saying he should have split the ring thus creating two radials? How would this be done typically. Would he have to disconnect one side of a socket thus breaking the ring. I'm pretty sure he didn't do that.

Yes, Turning off one MCB keeps all the sockets 'energised'. I know thats it must be a break between the last socket and the CU, i just don't know which is the last socket. I guess it could be any in the house. Do you know if the last is typically upstairs or downstarirs???? securespark: I...

not sure.... All i know is that on the old fuse box there was just one 32Amp fuse for the entire ring. On the new CU, there are two 20 Amp MCB's one for each rdial. But as i said, just one radial mcb can power all the sockets in the house. I guess he just split the ring return into a...

Hi, I have just had a new CU fitted by a local sparky. The new CU was fitted because i have a new extension and the one fuse box wasn't large enough and was a bit long in the tooth. On testing the ring main before commissioning the new CU, the sparky detected that there was a break earth...

I see. I thought it might be the the stop cock on the supply side of the HW cylinder (i.e HW side of the MV). I have tried throttling that back but it didn't seem to help. I'll look to see if there is a stop cock on the return. Thanks for your help.

What does this value actually do/control.

i'm not sure to be honest. I take it that will make a difference? Are you suggesting it may be open to much????