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I have a gravity central heating system, need to solder a pipe fitting thats leaking. The fitting is on the pipe that leads from the bottom of the copper cylinder coil. So I locked up the ball cock for the water feed to the boiler and drained the system by undoing drain plugs on the ground floor...

Drained entire system and refilled, its a gravity indirect coil type. All 8 radiators get nice and hot, all rads have been bled and no air. However, the 1st Rad downstairs is making an internal dripping/gush sound. Almost sounds like its empty and waters being poured in the top!!! I've left...

Just don't my first replacement of a Central Heating Copper Cylinder. One thing I've learned is that all these stop cocks on pipes do NOT stop water flow 100%, they must dribble!!!! Turned off the main cold feed, but little drips still dropped in to main header tank in loft.. ending up strapping...

threads of the connectors to copper cylinder and/or those of compression connectors. thanks

Sorry just a quick question... I'm confused.. Do I use the tape on threads, or put compound paste on??? Or both??? Just looked in ScrewFix and they have jointing compounds, with so many names, BOSS, Boss White etc... I just need a good join in the pipes. thanks PS. how many turns of...

OP I put a magnet on the pipes going in and out of the coil, the magnet sticks only to the lower pipe in the areas shown on the picture. What does this mean, and how do I cure it? thank you

Thanks Ill try that, but as this thing is so old, won't that nut be as tight as... And won't the water gush out if I undo it (knowing my luck it won't screw back on!!!!) thanks

thanks for the help and suggestions. The feeder tank is full, but the water looks pretty still, as though its been there for ages!!!! Also, if I push the ball cock down no water comes in, maybe the value seized due to lack of use, but I'm guessing this has no bearing on the coil supply in cylinder?

you don't think its a blockage in the (A) pipe??? thanks

Hi Here's a picture of my cylinder in airing cupboard. From previous posts you'll know I do not get any hot water, but radiators work fine. Its a Potterton system from the 70s, there are no options to turn on hot water/rads seperately, you only get hot water when the radiators are on!! The...

ok thanks guys for the info. I will do a little more research on the system. Cheers

sorry thats just gone over my head... Surely why would I need to adapt the heating system with motorised things etc.. its worked fine as it was designed to do for the past 40 years. So why can I not just replace the cylinder like for like??? e.g When I replace a steering wheel on a classic car...

Now you got me worried.... Whats Part L?????? The new cylinder is the same size, it has the correct connections, so what is Part L??? Thanks

lol sorry I mean 4 connections, that may have been fun, trying to rip the darn cylinder out without realising another pipe..haha!! And your right, gonna be fun with all these connections and drain taps, as far as I know they've not been touched since the 70s.... May be a cold cold winter!!!!

As my previous posts, I will attempt on Monday to take out the copper cylinder in the airing cupboard. Its a 1970's Potterton boiler, gravity indirect coil type with feeder in loft. I'm going to turn off the main supply that I see is a cold pipe in the downstairs toilet, I think this kills...

I'm currently trying to draw a diagram of my water pipes (to and from rads, copper tank, feeder, etc...) so I can get my head around the layout and what connects to what? Has anyone got any tips on this, for example I have two pipes going to my Front Room Rad, and they then climb the wall and...

thanks pete. will try this, but when you say drain water from supply, is that from one of the radiators downstairs???? sorry for being a bit thick!!!!!!

Thanks to you all, I'm gonna tackle the job tomorrow (monday), in answer to your questions, the top inlet to the coil does have a T piece that goes straight to the loft, so no air lock I guess!!!! Have checked the water level in the Feeder tank and there is plenty in there. So will have to...