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I see, ive ordered some more accurate measuring tools for the flow / return so can say later / tomorrow what’s actually going on there… though if those figures are right …what would cause this? Too much resistance or even a blockage in the pipes somewhere? Or something else?

Yep, so it’s correctly modulating down and using the appropriate amount of gas. Though it’s still leaving me head scratching that the boiler is modulating down before that flow pipe gets hot or anywhere near target temp. I have just found an option in the hydraulic menu that has confused me...

Good call, will give this a try, though I’m doubtful because perhaps 3 rads in the system are already all the way open. The ones furthest from it struggled to get hot otherwise.

Current % read out from boiler, its been on about an hour and a half by this point 12:33pm 12:36pm Obviously our meter is m3 not kw

I’ll need an engineer for that. Not sure how to run the gas test myself. Also I’m ordering some better thermometers today I don’t trust the ones I’ve used there. But yeah as above; even without the thermometers. Certainly that left flow pipe to the touch is no where near as hot as the LCD...

Generally in the region of 50-75% output id say. when I fire it up it starts low % and gradually creeps up but then as it hits the target flow it stays around 50% ish. that said i have noticed many times it'll overshoot the target, turn off the burner for 1-2mins then resume, when it resumes...

I wondered the same as you regarding some sort of failure with an internal ABV @Johntheo5 as in simple terms it does appear that the boiler simply can’t get the heat out of it… but I couldn’t see any evidence of one mentioned in the manual. Where are you reading that this boiler has an internal...

Ok so @Johntheo5 @Madrab... I fired it up this evening and monitored it pretty closely myself, I did notice a few things that could help determine the problem? - The boiler LCD display went from 12 to 40 within the first few minutes - By 15 minutes in the boiler LCD display was showing 70 odd...

Hey Madrab, I'll try dropping to 70 target and see if that helps things at all but from memory it was the same when I used to run 70 last winter. Pipework is 28mm for the first meter, maybe a meter and a half, then that splits to 2 lots of parallel 22mm runs, one run for the front of the...

Target temp is 75c. It’s 36kw, and when I add up the kw of the rads at T50, the power requirement for them is around 28kw or so. As far as I can see, it doesn’t have a read out for the return temp. But I guess I could tape one of my fish tank temperature monitors on it and see? I have...

It’s been balanced a bunch of times and does seem quite sensitive honestly. It’s 11 type 22 rads and 4 triple column designer types. They do all eventually get hot. So figured it is somewhat balanced correctly. Though it’s like I said above, the boiler flow temp sensor is getting way hotter...

thanks @Madrab and @muggles Problem on mine has resurfaced again and wondering if its due to an ABV not being fitted. Im noticing the flow temp on the boiler gets to target way before the radiators get anywhere near. Like it'll get to 75c within 20mins but it takes maybe 40-60mins for the...

Thanks - is it fine for the filling loop to be on the flow rather than the return?

Hi all, I’ve noticed a discrepancy in pressure between the physical filling loop dial (1.5Bar) and the LCD pressure display on my system boiler (1.2Bar) Having gone and inspected the plumbing under the subfloor it looked dry and no leaks etc, but noticed the filling loop runs into the flow...

I appreciate there’s a tipping point where it’s just not worth it anymore. I imagine that point differs relative to where the pipes are though. Ie in my loft for the upstairs boiler all the pipes were both lagged and sat beneath 150mm of wool because i needed to insulate that space regardless...

Thanks that was good advice. I asked - 28.8mm fine. As you said. Fine for 70mm frame - 36.8mm - also as you said. They seem to think it will be fine with a lower profile bead both sides. This would be much more preferable than changing frames etc. as I’ve got French doors with windows...

Anyone? :-)

Hi, I’m looking to either:- upgrade the current double glazing units (28mm) OR, both, the units and frames (70mm) in one of our rooms. I have a couple questions to help me decide. Option 1 - One local company offer a double glazing option with much improved acoustic and thermal performance...

Hi all, Ours is a 1950’s property with an air brick ventilated crawl space below the ground floor (With great access). The CH pipes down there are of course in a cold environment with being that space being open to the outside air via the air bricks. I’m wondering how far I should go to...

thanks for the advice. Good shout this. I got round to taking some images from outside today, its freezing here (-5!) and the heating ( just the radiators radiators, not fire) had been on for 3hrs or so when I took these. One of the first things I noticed was all the windows looked a fairly...