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OK thanks all for the advice. I've just emailed the supplier asking for details of the part. I have the installation instructions, and will make sure teh new installation is fully compliant. Paul

transam, Thanks for the response. How about this one (the 15-22mm one)? http://www.toolstation.com/shop/Plumbing/Valves/Straight+Tundish+22mm+x+28mm/d20/sd2696/p50370 Thanks Paul

I'm planning on using 22mm copper pipe, it's just when looking online, all the tundish's seem to be plastic. Will that be complant? Thanks Paul

Hi, Just had Brit Gas to do a check on my boiler and unvented water system for a maintenance contact, and they claim that it needs a tundish into a metal pipe rather than the current exit into an open plastic pipe. He told me what to do, and said I need a 300mm drop of 22mm copper pipe...

Thanks for your feedback. I prefer to have views from someone else when I call in an engineer. I guess it could be a dirty filter, or because the cold feed isn't taken from after the pressure reducer. Does anyone have any suggestions of reputable engineers for unvented systems in SE...

Thanks for your responses. It's worst at that shower, but unreliable everywhere. I just gave the kids a bath, and we have a thermostatic mixer tap, pretty much as soon as I turned the tap off, the hot feed felt freezing. Is that consistent with an unbalanced system? I will get someone in...

Hi, I've got an Ariston unvented waterstorage sylinder, attached to a Worcester-Bosch gas boiler. Recently the hot water has been playing up, but I cant understand why. The boiler is firing up and heating the tank as expected, and sometimes the hot water comes out fine, other times it...

Well I have done the first check, and the rads dont get hot. If i only let the water run slowly it does get hot, and the lamps on the front light correctly. When i run the water with some force, it only gets luke warm. It behaves as if it's starved of gas. I'll borrow a multimeter tomorrow...

Tony, Thanks for your help. You arent corgi registered by any chance are you? I'm based in SE13, if it's local I may be interested in your help. If so email me on [email protected] regards Paul

I've been looking at the technical manual, and it looks pretty straight forward to replace the diaphragm to me. Could you let me kniow which of the following diaphragms it is I need to order, i assume it's the 3 way valve one ? The technical document I have doesnt show a part number for this...

Thanks for the prompt response. As it's not been gradual, isnt scale unlikely? It literally stopped heating properly overnight. Is the diaphragm possible as a DIY job, i'm reasonably competent, or should I always leave boiler fixes to the experts.

Hi, I have a 4 year old Baxi 105e and for the past couple of days wont heat the water up fully. Even with the water temp set at full, it only manages to heat the water up to luke warm. The lamps on the boiler indicate that all is OK, but the temp lamps dont go above 50c. It's...