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OK...so tell me,..... the diagram of the smartline expansion vessel, safety valve, hot/cold mixer safety valve and pipework shows them all placed above the tank in a convienient position....... is this a requirement....i.e: does the vessel and valve have to be above the tank, or can they be...

Cheers !....a new shower cubicle !!!!

Hi guys, anyone one know if there are any reasons/regulations against moving my hot water tank from a small upstairs bathroom up into a large attic ? The previous 'normal' cold water tank was up there an I have loads of room, if I could move the new mains pressure unvented tank/filling...

All the instructions were very comprehensive, indeed showing explainations and diagrams for the 1991 G3 regs....but no mention of needing the valve you mentioned.....but it sounds more than correct and reasonable to me, and I will get one put in (wired in parallel with the existing valve ?....or...

Thanks for the help guys....guess I should've done the 'cures' one at a time but it's sunday night....anyway, have turned the pump speed up and dropped the temp on the tanks built in thermostat and bingo...(well so far at least) the tank now cuts out the boiler without the reset tripping. It...

NOW you tell me....hope it don't go bang....I've got 20 15ltr sucuba cylinders filled with oxygen and filled to 350bar sat near it !....rekon the water will put the fire out ? Seriously...I think the installer has all the papers...I just took the small tank out and put a larger one in....I...

Err... the boiler was left as I found it with no modifications other than fitting the filling loop and expansion vessel. I simply took the feed and return from the old tank which was too small (big family with lots of teenage girls) and fitted them to a replacement larger tank. Other than the...

???? a what ?....the sytem has a tank overheat/over pressure valve....a 'not to scold yr self' mixing valve, the tank expansion vessel also has an over pressure safety valve. The filling loop for the boiler/expansion vessel also has a safety valve. and the heating control pack has one mid port...

Phew..that's ok then...the bathroom radiator is connected directly between the flow and return, after the pump and before the y valve....thank's for your help....I'll see if setting the pump speed higher helps.

Thanks...I'll try the pump on a faster setting...but from the other post...what's a 'bypass' ?...where should I have one ?

err...sorry to be a pain...but what's a 'bypass' ?...where should I have one ?

Yep I have the filling loop and expansion vessels ( one for the tank and one for the heating circuit) and the system has been charged/fully bled with no problems in that area...the pump works fine and the 'y' system is brand new and works fine too....just the reset switch keeps...

Thank you...so the little reset swtich is for when the boiler reaches its maximum temperature....not pressure ?...in that case if I lower the tank theromstat temperature (currently set to max)...will this cure the problem ?

I have an old(ish) potterton profile 40 which was origional and have replaced the system with a high pressure sealed system. It all works fine except that the presssure switch keeps tripping out on the boiler starting from cold at 1.2b and after many resets (30mins or so) eventually trips out at...