No open all the radiator valves so that the raadiators will heat up, and record what the boiler pressure is before you switch the heating on, then turn the heating on and check the pressure guage after 30 mins with the heating running and see what the gauge now reads
Ive had the heating off (apart from tap) for 24 hours and boiler pressure has remained the same at 1.2 bars which is unusual as normally in 24 hours it will have lost about 1/4 of a bar when heating is on.
Anyhow, OK the boiler is at 1.2 bars, opened all the radiator valves, pressure stays at 1.2 bars, then turned the heating on, boiler is still at 1.2 bars....will now wait 30 mins to see what happens.
Thats fine your expansion vessel is operating correctly, next test is you will have a 15mm pipe going to outside from your boiler, should be turned back towards the outside wall, but not always, locate this and tie a balloon or freezer bag or something on the end and see if any water accumulates in there
it will go outside through the wall, pics arent great but guessing its the one with the receiver for the thermostat on it , the white box with the light and cable, if that pipe goes through the wall to outside then that is it, that installation is a disgrace
Thanks, I have put a freezer bag around and under and where the the cooper pipe meets the back wall which I presume goes outside, its the only pipe I can find that goes though the back wall. It was indeed the pipe which the receiver thermostat is sitting on , on this picture:
You can not see in that picture where the pipe disappears in to the wall as the white thermostat is covering the part of the pipe that goes into the wall.
Theres loads of condensation on these pipes that I put a red arrow next to, is that ok?
Ive been checking it daily and its stayed at 1.2 bars, checked midnight last night it was 1.2 bars, c hecked just now and its 1.1 1/2 bars. no water in the freezer bag.
The pressure guage will alter when the pump is running and when the water heats up, if it is holding at 1.2 Bar it is fine at that, it will change when the boiler is on but if when cold it holds at that just forget about it
BTW that tiny square of dots on the label bottom left of the case holds all the information you need to identify the model and all parts of the Vokera. Take a pic with a QR reader app on your phone and it'll give you all the information you need.
The pressure guage will alter when the pump is running and when the water heats up, if it is holding at 1.2 Bar it is fine at that, it will change when the boiler is on but if when cold it holds at that just forget about it
Wow, not the prettiest installation is it? Still, buy cheap, get cheap I suppose. Are you able to operate your gas emergency control valve to shut the gas off if you need to? Your photos are really blurry but it looks like it might be blocked by another pipe :-/
As to your pressure loss, it does sound like you have a small leak somewhere, but not much you can do until you find a damp patch
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