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Everything has been tried, including ds40. Plumber mentioned someone using hcl but recommended replumb.

Evening all, Has anyone tried adding Hydrochloric Acid HCL to a central heating system and ran it whilst heating is on? I understand it will react with water especially when hot. All copper on the system, just looking at a way round replumbing central heating due to severe pipe blockages...

Good afternoon all, Following on from a post I made roughly a month ago, which can be found //www.diynot.com/diy/threads/no-heat.429709/ where I wrote about not having heating downstairs but upstairs was fine. The system is one pipe with 19 rads up and down and an Ecomax 635 system...

An airlock on a sealed system? If there is a blockage and a power flush isn't curing it, any ideas what will apart from ripping up floorboards to replace pipework? Thanks

Thanks for your reply, I should have mentioned If I turn upstairs rads off, downstairs rads do get warmer but still not hot enough.

sorry think its 635e not valiant 637

2003ish

Yeah they are specifically for a one pipe system, the plumber who changed them had to wait a day for them to come in, rads even with normal valves have the same issue. Thanks

Hello all, Have a one pipe system, thats been working fine for over 3 decades! Recent issues with upstairs working and downstairs not working. Have had a new pump new expansion vessel and new heat exchanger and 6 new rads and valves - all faulty luckily covered by homeserve. Been...

Ok so I had a thought, drill 150mm, meaning into the second leaf, screw in thunderbolt, job done? Cheers

Thanks for your replies, so thunderbolts,http://www.tradefixdirect.com/nails-screws-fixings/fixings/anchor-bolts/thunderbolts/thunderbolts-hexagon-head-galvanised these things will provide a better fixing than resin? Just found a chimney stack 300mm wide in the bedroom that is cut off just...

Hello everyone, In regards to fixings what fixing can hold up the most weight, Resin with stud or expanding bolts? Many thanks

Thanks for your reply, its a sealed system so no issues with capping off.

Haha yep best of british! Its 28mm pipe then splits to 15 at each rad and has been working perfectly until now? It was installed before I moved in and this was 21years ago! Not efficient I know but the rads get scorching, thays before its stopped working and this is the first time in 21years...

Many thanks for your reply, the flush is for a single pipe system, do you have any hints or tips for getting the best flush possible? Boiler is cutting out as soon as it fires up for the heating, hot water is fine, had a home serve engineer out who checked the boiler for an hour and said...

Hello everyone, I wanted to know whether running Fernox DS40 through my boiler would cause any damage to it, I am planning on a powerflush this weekend and wanted to know if I need to isolate the boiler from the rest of the system. Obviously being acid do not want to cause any damage. Also...

Thank you for your prompt reply. I understand this might be a question for the building inspector but whats the likelynes of 380mm being passed? Thank you

Lol sorry, bluddy phone. Ok so I want to know whether there is a minimun distance between an external doors leading edge and a wall? Thank you

Hello There a minimum clearence from an external doors leading edge to a wall. I want to build as close as I can to the back of the house with a door. Many thanks

Hello everyone I have a newly laid concrete floor, 150mm hardcore, sand, dpm, 100mm insualation with a concrete slab. I want to batten out the slab with 2x2s then lay p5 chipboard over it ensuring I get a perfect level. Are there any issues in terms of ventilation preventing the timbers...