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I have done that and it heats. When u turn all on again it stops heating

So I close 8mm rads but open 15mm ones to find out which ones heat first?

this is the Flamco valves will I turn 8mm rads off after I put heating on to see which rads heat first to start balancing?

yes all new 15mm pipework with Flamco Valves installed on flow/return. not all rads have TRV the 8mm microbore have the twin connector at one end but I can turn these down as well.

yes said that the wrong way OK yes Flamco Valves installed throughout the heat system will try that thanks

yeah 5 rads are all new with 15mm piping going across loft then flow down to rads and return back up. no some rads are on 8mm microbore but its a Bungalow so rads spreadout

This is the new boiler that as installed 12 months ago and just reading that temp between flow/return should be 20 degrees as its a condensing boiler is this correct?

Hi I have been reading online articles and watching youtube videos on how to balance radiators. few questions; 1. My new rads at min the 1st one in the line is pumping hot and the other 4 have heat coming in via the TRV but radiator not heating and lockshield side cold, could this be a...

Think I will disconnected the Manrose fan and install the inline fan see how that fairs out.

The current fan is the standard 4inch extractor fan that's installed (Manrose XF100S 100mm Axial Bathroom Extractor Fan White 240V). I have got this https://amzn.eu/d/h5Zo7gr whihc I installed in another bathroom I recently upgraded and its excellent. The room is not air tight as window is...

Hi I have an standard extractor fan in my bathroom which is out through cavity. I want to wire a new inline extractor as well to give the bathroom a bit more suction as walls and ceiling are soaking when showering. Is it OK to just spit current extractor fan cabling and connect to inline fan...

No if I bleed rads no air water pour out right away once bleed screw is opened. I can't see it being air ingress from outside possibly generation of hydrogen how do I solve that issue? I will try this setting this week and update if that's ok? Thanks for your help Johntheo5 really...

https://www.dabpumps.com/en/products/circulators/wet-rotor-electronic-circulators/evosta-2

What you mean a link? Adding water how would I do that? If its done by adding water via the E.vessel this will only go to 1.2 bar when cold.

No need to add more air as the pressure rose to about 1.8 bar when heating was on. The rads that are now working i added to the system of 15mm existing pipe work and each of the 5 rads has their own flow/return from the 15mm pipe work. yes funny when all rads are off and one that dont work are...

the pipe the E.vessel is connected never heated at all?

Update i tried heating today turned off all rads but left one that wasnt heating on heated with good flow. turned this one off an turn on another one which wasnt heating heated. i done this when i got all rads heating individually. once i turn all rads on the same rads stop heating again...

Thanks for all the advice

There are 19 rads on the system and some are not heating at all. It's the new 15mm ones I have installed there are 5 new ones and 3 are not heating. The fella who installed the boiler left the pump at that setting. He got all heating few weeks back but only turned heating on today and 3 not...

Pump is Evostat 2 on setting constant curve 3 and yes pump is installed correctly. It is an 8m pump, would the high setting create air in the system?