Try this one, rem you can just change the values in all the yellow boxes to make your own actual rad but only change the "Manuf" rated output to either ONLY 50(C) or 60 (C) depending on whether you are dealing with very old rads (60C) or the European now and for a good few years standard of 50C.
[automerge]1578247506[/automerge]
[automerge]1578247506[/automerge]
Is a PH measurement now available with the test kits for boiler water as it must be very important with the mix of materials now in mainly gas boilers ie SS or aluminium hxs.This was never a problem until recently, the water pathways thro older cast iron boilers were wider than the M6 ...you could stick your main digit in. Now the water pathways are less than a rollup ciggy
paper...of course the hex will block. So always treat the system and check each year. Open vented needs the pump speed balanced to avoid pump over ..the colour of the water is crucial
Black just needs treatment, Brown naughty as there is a constant introduction of air etc.
I know ...my company were very involved in this stuff years ago with Sentinel and others
...CHKing