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This was done by the plumber when he finally commissioned the system but it had been filled up for about 4 months without inhibitor. Would this be enough time to cause this problem due to sludge? I guess what im getting at is the system leaking or not. From what your saying, air...

can you go into more detail about that? how does sludge cause an air pocket? Is there anyway of correcting the problem if it is?

Hi Guys, I've got a new boiler and central heating system (about a year old) which may have a problem. I had to remove the towel rail about 6 months ago to fit a new heating element as the old one had blown. I then did the following as instructed by the plumber: re fitted the towel rail...

Its all working as it should now. I've just got to get the settings right on the thermo and everything should be fine. :D

I have done the above and have connected terminal 3 on the boiler to the L next to the N and the A in the relay is linked to the L next to it as shown in the diag. The relay appears to be doing what it should with the green led going on and off but the boiler doesnt fire. Is there anything...

make: Vaillant model: EcoTEC Plus 824 flow temp: 75oC return temp: 55oC burner pressure: N/A box ticked The plumbers gas safe number checked out to.

sorry, i didnt make that very clear. I said I'm the spark as in i will be doing the electrical work as i have done with the rest of the electrical install (a 2 bed flat). I didnt mean i was and qualified electrician. Before anyone asks, all the electrical work iv done as been tested and...

I'm not a spark, just a DIYer. Although i dont own a tester my dad has one which i use but its not available at the moment. Anyway back to the original question. If you look at the 4 diags for the relay it shows a connection between an L and A which looks like it is inside the relay...

i dont own one so they cant! :) Is that a yes then?

I only have the diags that i posted pictures of to go on and they do show a connection between the 2 in each one. I guess iv answered my own question as either will do since they're connected in the device itself?

if you dont know the answer, dont post.

just realised, the relay box has 2 L's. Which L needs to be connected to A?

cool, thanks for the help. :D

Cheers for the replies guys. Just to confirm, i must remove the bridge between 3 and 4 on the boiler as it says? Also, would it be ok for the relay to get its power from the L and N terminals inside the boiler, marked as Mains Supply: 230 V/50 Hz? I ask because its going to be difficult...

I was told at the time that this is a job for the spark which in this case is me. If this should have been done by the plumber then its to late now. The boiler could still be operated through its controls so the fitting being complete would appear resonable to me. Either way I'm doing it...

Hi Guys, I have a brand new Vaillant ecotec plus combi boilder installed and need to wire up my new wireless CM900 thermostat and BDR91 relay box. At the moment i cant see how the to 2 wiring diags marry up so id like some help with what needs to connect to what. combi boiler diag...

2. I think I'll go with BAL Mosaic Fix adhesive (Bright White). There's a number of BAL grouts to choose from to. Is there a grout that is the same shade of white as the adhesive? If some adhesive comes through the gaps i'd like this to not be such a problem. :) Also for about 2 m2 how...

I plan to install about 2m of glass mosaic tiles in my new kitchen. The tiles are called 'Utopia' http://www.originalstyle.com/tile_mosaics_glass_tropical25.htm I've done some wall and floor tiling recently but havnt done mosaics so iv got a few questions about them: 1. First...

I could roll up a piece of sand paper and roll it around inside the opening but that was about it. I cant really do that now as all the kitchen sink waste pipe has been fitted. i'm going to go with the plasteel stuff and drill the hole a bit wider to allow more of the resin through...

i'm currently fitting a kitchen and have noticed that there is a small hole that is leaking on the soil stack in the corner. Its on the waste pipe piece join as you can see a drip of orange coloured rust running from it in the pic. I did clean the inside of this pipe out (over 50 years of...