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Post by crowsfoot on Feb 6, 2019 7:12:00 GMT
The "boiler" thermostat on the "boiler" itself (I think that your thinking of the room thermostat) it's to make it work a bit harder to see if that return temperature can be improved by getting the flow hotter.
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Post by wingnut on Feb 6, 2019 7:24:14 GMT
Ah yeah sorry that one is on full 👍
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Post by crowsfoot on Feb 6, 2019 7:30:16 GMT
OK it was worth a shot!
It could now be working at the best that you'll ever get it to (without doing a full re-pipe).
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Post by wingnut on Feb 6, 2019 7:31:34 GMT
Yeah I’m beginning to think that, or maybe a powerflush
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ian
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Post by ian on Feb 6, 2019 23:15:21 GMT
Yeah I’m beginning to think that, or maybe a powerflush Don`t forget battles suggestion of the blocked heat exchanger. You could also check that the pump is turning freely and operating properly. Simple things to check before you start to spend any money or turn it into a big job. When you flushed the system did a lot of crap come out? What was the filter like when you changed it? |
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Post by wingnut on Feb 7, 2019 6:59:42 GMT
What direction should the pump turn looking at it from the back?
Yeah there was plenty of black water, filter was quite pitted even with it being on the flow side
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Post by crowsfoot on Feb 7, 2019 7:13:30 GMT
A forward direction wingnut.
As a last ditch attempt for a fix - it might just be worth fitting a new pump?
I personally think that you'd be wasting your cash on a power flush.
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ian
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Post by ian on Feb 7, 2019 8:02:38 GMT
What direction should the pump turn looking at it from the back? Yeah there was plenty of black water, filter was quite pitted even with it being on the flow side It's unlikely the pump will be spinning the wrong way. Problems with pumps tend to be the internals gunked up stopping/slowing it turning (check the impellor and the rotor side), impellor coming loose on its shaft or becoming worn reducing it efficiency, or the pump just becoming weak/dead due to age or deterioration of the windings/components. As for a power flush, I would consider just giving everything a flush with a hose pipe. Removing the radiators to flush individualy. Back flush the heat exchanger and flush each valve individually and assess it's flow. (Be sure all the other valves close properly before blasting water through) I think Tom may have done a video on this so will have a look for you now). See what flow you have and what crap comes out and then put it all back together and hope for improvement. |
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ian
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Post by ian on Feb 7, 2019 8:27:56 GMT
Tthis is toms video showing how to connect on to the valves. You could try flushing them all from one pair of valves like in the video, but I would disconnect your flow and return at the boiler; connect some pipe to both and run them to the drain. Then push mains pressure through a hose into each valve individually. It''s a bit of a faff but it's free and keeping an eye on the flow from each may guide you on which pipes may need replacing.
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Post by wingnut on Feb 7, 2019 8:45:47 GMT
Cheers ian I’ll give it a watch
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ian
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Post by ian on Feb 7, 2019 8:50:20 GMT
Cheers ian I’ll give it a watch You're welcome. Hope it helps. |
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Post by wingnut on Feb 9, 2019 9:28:38 GMT
So flushed rads yesterday as per video, last nite toasty radiators, room stat in excess of 22 degrees, today back to normal struggling to get to 20.
All TRV and Lockshield wide open, should I now be looking at balancing?
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Post by battle1066 on Feb 9, 2019 17:01:17 GMT
So flushed rads yesterday as per video, last nite toasty radiators, room stat in excess of 22 degrees, today back to normal struggling to get to 20. All TRV and Lockshield wide open, should I now be looking at balancing? If everything was good last night after the flush with all rads at the correct and desired temperatures you wanted then it shouldn't need balancing. Now if there now misbehaving again and not reaching the desired temperature then it sludge settling causing an obstruction. |
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Post by wingnut on Feb 9, 2019 17:04:14 GMT
I’ve double checked the rads and some of the radiators the flow is on the lockshield side 🙄 I’ve made a note of which and turned the other side down and we are back to last nights temperatures 👍👍👍
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Post by wingnut on Feb 10, 2019 21:49:45 GMT
Massive thanks to all who’ve helped and advice given, after flushing rads on Friday and finding half my TRV’s are on the return side so having to temporarily use those as the balancing side I can now say all my rads are warm and desired temperatures reached, thanks again peeps, virtual beers to all 🍺🍺🍺🍺🍺🍺🍺🍺🍺🍺🍺🍺🍺🍺🍺🍺🍺🍺🍺🍺🍺🍺🍺🍺🍺
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