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Post by wingnut on Feb 4, 2019 21:16:32 GMT
No rads were changed first, I’ve only recently swapped filter onto return Well that should rule out any problems with that, and there has been no gate valves shut at all? (They can stick in a partially/closed position but you cant tell because the handle still turns as normal.) Have you checked if there are valves on the flow and return where they connect to the boiler, and that they are open properly? Definitely all valves open mate I’ve checked and double checked I’m a fitter by trade so have seen plenty of stuck valves in my time, appreciate all your help though 👍👍👍 |
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Post by wingnut on Feb 4, 2019 21:17:11 GMT
Well that should rule out any problems with that, and there has been no gate valves shut at all? (They can stick in a partially/closed position but you cant tell because the handle still turns as normal.) Have you checked if there are valves on the flow and return where they connect to the boiler, and that they are open properly? It certainly sounds like a restriction of some form Ian, a valve part closed or muck in the pipe work. Having 8mm microbore won't help on big rads either. I can powerflush for £150 do you think I should do it to rule it out |
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ian
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Post by ian on Feb 4, 2019 21:24:25 GMT
Well that should rule out any problems with that, and there has been no gate valves shut at all? (They can stick in a partially/closed position but you cant tell because the handle still turns as normal.) Have you checked if there are valves on the flow and return where they connect to the boiler, and that they are open properly? It certainly sounds like a restriction of some form Ian, a valve part closed or muck in the pipe work. Having 8mm microbore won't help on big rads either. Hopefully it will just balance out but its worth going over the basics first, esp when it was working fine and then suddenly isn`t. Its easy to forget you have turned a valve off, or not notice you have bumped a lever whilst doing something else. |
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Post by wingnut on Feb 4, 2019 21:26:32 GMT
It certainly sounds like a restriction of some form Ian, a valve part closed or muck in the pipe work. Having 8mm microbore won't help on big rads either. Hopefully it will just balance out but its worth going over the basics first, esp when it was working fine and then suddenly isn`t. Its easy to forget you have turned a valve off, or not notice you have bumped a lever whilst doing something else. That’s what’s so confusing about it all, when all rooms had single rads bar the dining room you couldn’t touch the rads they were that hot, fit TRV’s and 3x new doubles and boom cool rads |
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Post by tomplum on Feb 4, 2019 21:26:42 GMT
going off what i've read here NO, I'd replace the 8mm for a start then look where the 22mm pipes change to 15mm, In doing so you will see how much gundge there is, £150 will buy you a lot of new pipework  |
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Post by wingnut on Feb 4, 2019 21:30:17 GMT
going off what i've read here NO, I'd replace the 8mm for a start then look where the 22mm pipes change to 15mm, In doing so you will see how much gundge there is, £150 will buy you a lot of new pipework That’s going to be a hell of a job Boiler is situated in the outhouse flow and return go into the kitchen then into the ceiling void, all rad pipes are sunk into the walls and plastered over, bathroom (which is 1st nearest upstairs rad to boiler) is tiled I don’t think it could be any worse 😔😔😔 |
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Post by tomplum on Feb 4, 2019 21:33:46 GMT
yes its always the case, a bad installation shows up when its cold. long after the cowboy has rode into the sunset.  |
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Post by wingnut on Feb 4, 2019 21:36:28 GMT
yes its always the case, a bad installation shows up when its cold. long after the cowboy has rode into the sunset. We think the boiler has been in for 14 years, pipe work and rads are older and up until day months ago all was tickety boo, only thing boiler has needed recently is a new gas valve as it wasn’t modulating and two diaphragms all fitted by a GS engineer |
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Post by wingnut on Feb 4, 2019 21:39:04 GMT
Not sure if I mentioned before but if it’s any help ive dial gauges on the boiler flow runs at 60ish and return is approx 40, takes quite awhile for the return to get up to 40
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Post by tomplum on Feb 4, 2019 21:41:40 GMT
I get that, but you've added double rads, so I'm assuming the house was cold and the rads are not working because the original installation was fitted with undersized pipeing, Of course this is just my opinion formed from the posts above, I may well be wrong but my guess is, the pipework is not big enough,  |
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ian
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Post by ian on Feb 4, 2019 21:42:41 GMT
Hopefully it will just balance out but its worth going over the basics first, esp when it was working fine and then suddenly isn`t. Its easy to forget you have turned a valve off, or not notice you have bumped a lever whilst doing something else. That’s what’s so confusing about it all, when all rooms had single rads bar the dining room you couldn’t touch the rads they were that hot, fit TRV’s and 3x new doubles and boom cool rads Mechanical thing are like women, show them a bit of attention and they just demand more and more. haha |
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Post by wingnut on Feb 4, 2019 21:44:31 GMT
I get that, but you've added double rads, so I'm assuming the house was cold and the rads are not working because the original installation was fitted with undersized pipeing, Of course this is just my opinion formed from the posts above, I may well be wrong but my guess is, the pipework is not big enough, We’ve recently had a little girl so I wanted to make sure house was warm enough for her, when I did the BTU. calculations for the rooms I needed bigger rads so I opted for doubles that met my requirements, ALL the old rads got warm just didn’t fill the rooms |
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Post by wingnut on Feb 4, 2019 21:45:17 GMT
That’s what’s so confusing about it all, when all rooms had single rads bar the dining room you couldn’t touch the rads they were that hot, fit TRV’s and 3x new doubles and boom cool rads Mechanical thing are like women, show them a bit of attention and they just demand more and more. haha 😂😂😂😂 true |
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Post by battle1066 on Feb 4, 2019 22:17:05 GMT
Well I feel we have a large piece of dirt in the enterence of the heat exchanger and would check there before pulling any pipe work out - since that returning temperature is so low and slow to reach a realistic temperature is my reason for that thought and that you've flushed the pipework and the filters wasn't on the return until later in the game is my supporting reasons!
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Post by wingnut on Feb 4, 2019 22:27:52 GMT
Well I feel we have a large piece of dirt in the enterence of the heat exchanger and would check there before pulling any pipe work out - since that returning temperature is so low and slow to reach a realistic temperature is my reason for that thought and that you've flushed the pipework and the filters wasn't on the return until later in the game is my supporting reasons! Is that something I could check or do I need to get a GS Engineer? |
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