Onoff

Begins with C.

Going back over 20 years now and when we moved in there was no heating in our 4 upstairs dormer rooms. Downstairs was all rads on the old single pipe system. I went down to Wickes and picked up one of their "Good Idea" leaflets. The predecessor of this: https://www.yumpu.com/en/document/read/8269372/choosing-fitting-central-heating-radiators-wickes I MAY have the original leaflet somewhere at home. Anyway, it's a dead simple guide. 1) Work out your room's volume. 2) Calculate the nominal heat output in BTU/HR or Watts 3) There's then various factors to take into account for that nominal heat output; for ceilings over 3m height add 20% for a North facing aspect add 10% and so on. 4) You end up with a figure then select the nearest rad to your requirements from the table in the link. If a single's too wide to fit or you don't like the space it takes up, you go for a double with the required output etc. From memory I went one above the nearest. End result is my 4 upstairs rooms are toasty warm when the rads are on. Given that the losses through the fabric are a pain but they clearly give enough heat to heat the rooms. I'd suggest you do the same excercise with what you have fitted. First measure your rads with a tape and take a stab at what BTU it gives out by comparing a similar size rad on the chart. That's the real easy bit. Then, room by room do the calcs and see what BTU is required. See if the rad output is enough. You will at least have some idea then if the installer has been duly diligent in sizing the rads you've got.

One of these 3 then: https://catalog.international.geberit.com/en-ZA/products/CH3_100902/Systems/Installation-and-Flushing-Systems/Geberit-Duofix/Installation-elements/Elements-for-WCs?tab=products&name=&type=Sigma+12+cm&ppp=15

Tbf to the installers, if you drove them as nuts as you do me they might well have missed some basic install checks such was their hurry to vacate the premises!

Seem to recall you paid £555. It's a UP320 Sigma. Was it 80 or 112cm (that's floor to top of frame height).

Same bits I had with my Geberit frame. You still got the box the frame came in? There'll be a long number on there like: 111.799.00.1

Masochist.

Those studs on mine are M12 not M10 btw.

Sorry, missed you saying/sketching that. Could even put the slots on a slight slant... top, bottom, side, wherever.

I just felt this might create a lull to give everyone a rest, gather their thoughts, seek therapy etc.

Are they, do we have that confirmed? Strap a sensor on the flow pipe and top of rad then post a pic for all to see would be good. Maybe not a bleed issue but for the SECONDS it takes to do, in light of the grief he's had/having, why wouldn't you try bleeding. It's central heating 101 tbh!

I'm already regretting popping that radiator key in the post to you this morning.

One of things I love about the IoW. Pitch black at night whilst driving for the most part.....not anymore!

Fag packet sketch for a spacer, dead easy to draw / print:

Might be some ideas on Thingiverse? https://www.thingiverse.com/thing:3914359

Can't figure a female to male extender for the connector?

Tbh you could likely ditch the studs once the CT1 has set!

As aforementioned and repeated below I left mine on and slipped PVC conduit over my studs. The thickness of the sleeve plus the conduit brings it up level to the bfo plastic retaining washer that came with the Geberit kit. Mind I had big holes in my pan to "fill": Interesting to see under the pan how the end of the zinc plated studs have rusted (couldn't get it to focus):

Not on my Geberit Kappa UP200 frame:

You did indeed, page 22 of 53, November 29th 2020! ? Tbh I must have subconsciously missed that, any sentence you write containing the word "bleeding" brings back painful memories...

You should really tbh go round once a year at least and bleed your rads as a matter of course. The new rads might have come with keys, often little plastic ones. Any left over bits anywhere?

Seriously did none of the visiting "engineers" bleed the radiators at any time? What about at the time of install?

Reminds me of an old Kentish proverb "Man who no spend 69p at Screwfix, right c**t!"

So the rads haven't been bled? You could humour me for the seconds it would involve to take a radiator key to them and see if any air comes out.