Recent content by TOMCAT1400

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    Air in the radiators

    @softus 1 cold water tank in the Elson,2 feed pipes at bottom of tank,1 feeds ch system for top up purposes,2nd is feed to hot water tank. Was advised not to use chemicals in this tank and can confirm that I have seen water from the hot tank (which goes to taps) backfeeding into the cold...
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    Vaillant vcw 242 hot water lukewarm changing heat exch FIXED

    @Namsag Managed to straighten the pin with thin long nose pliers and a lot of patience,I used to modify cct boards like these so have some experience of intricate work.(if only I had put the board back in as carefully as I straightened that pin I could have saved myself a lot of hassle. :oops: )...
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    Thinking of using a maganaclean filter

    I first used these about a month ago for my mother in laws heating system.What a load of sludge they trap,its amazing. Even after a powerflush they still caught a fair bit after a week or so. I have ordered one for my system as I was so impressed with them. Cheapest place I have found to...
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    Air in the radiators

    Be careful with flushing agents on an Elson diamond tank as the cold water tank within the Elson not only feeds the central heating top up but also feeds the hot water system. I.E. the water in your hot taps has the potential to mix with water in the heating system. I had to find out about...
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    Vaillant vcw 242 hot water lukewarm changing heat exch FIXED

    I,ve fixed the problem with the lukewarm water. :D :D :D Basically when I cut the w18 link wire in the control box I had to pull the cct board out an inch or two and when I,ve put the cct board back in one of the pins on the edge of the board has bent and not made contact with the connector...
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    Vaillant vcw 242 hot water lukewarm changing heat exch FIXED

    Thanks for the picture,I can see both the tubes now. I will try and check these tomorrow as it's getting a bit late now. Just had a shower and I reckon the flow rate for the same shower temperature is almost half what it was before the swop so it must be due to the dhw not getting hot...
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    Vaillant vcw 242 hot water lukewarm changing heat exch FIXED

    Thanks gasguru I may have disturbed them as I had the control box pulled forward to get to the w18 link. Is this the clear 5mm pipe that goes to the bottom of the main heat exchanger. Don' remember seeing more than 1... :lol:
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    Vaillant vcw 242 hot water lukewarm changing heat exch FIXED

    Thanks for the replies. Stop cock is at same position as before the swop, tried varying it but it made no real difference. I did use a compressor to pump the vessel and yes it has been flat for a while as I remember thinking it was an air bleed a couple of years ago (duh) Should it be...
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    Vaillant vcw 242 hot water lukewarm changing heat exch FIXED

    Thanks for the replies. Did not measure flow rate before swopping but the hot water was fine even with the leak. CH flow pipe not getting hot with dhw on so I dont think it's the diverter. Measured the gas flow and with hot tap full on it takes 49 secs for 1 cu/ft of gas to flow...
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    Vaillant vcw 242 hot water lukewarm changing heat exch FIXED

    Thanks for the reply but I don't think you can adjust the pump speed on this boiler.(Could be wrong though) The part I fitted was a genuine maufacturers part which replaced the old design of heat exchanger and came as a kit of parts with new pipes,washers and valve disc and instructions. I...
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    Vaillant vcw 242 hot water lukewarm changing heat exch FIXED

    Hi Yesterday I fitted a new DHW heat exchanger to this system (vcw 242) as my old plastic one was leaking. Now its a proper Vaillant part and I even changed the divertor valve disc even though there is not much scale up this area. Whilst I had the valve dismantled I done a mini refurb on...
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