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Daveleaver
Evening all
So... had a new boiler fitted and pressure keeps dropping i called the guy back and we isolated the boiler from the rads at 1.0bar 36 hours later no change so i opened the flow and return and the pressure dropped to 0.8bar. So i have a leak on my paperwork simple yeah? Now this is where it gets strange.
I carried out the test again pressurised to 1 bar and isolated. Went back next morning 12hrs and pressure was the same until i opened the flow pipe and it went to 0.8bar
Carried out the test again same as above but this time re opened the flow and retuen in 3 hours and you guessed it 0.8bar again
So i decided to fill up to a bar and drain a rad until the boiler showed 0.8bar so i then coulf see how much water im losing i got 600ml out and as the 1st 4m or so of my pipework is 22mm i calculated that to be aboit 2m worth of pipework where the leak roughly woild be as its obviousky not leaking past this point.
If i leave the flow and return valves open on the boiler it will reach 0 pressure as its obviously feeding the leak.
My boiler is in the loft which gives me the conclusion my leak is around 2m down the flow pipe from the boiler. I can see the 1st 4m of pipework and its bone dry lol.
My question is is my assumption its on the flow pipe bull as when i drained the rad down manually or when it gets to 0.8 from the leak could that also be on thw return pipe? For example qhen i drained the radiator what pipe is it taking water from or is it about the same on both pipes
Thanks
Dave
So... had a new boiler fitted and pressure keeps dropping i called the guy back and we isolated the boiler from the rads at 1.0bar 36 hours later no change so i opened the flow and return and the pressure dropped to 0.8bar. So i have a leak on my paperwork simple yeah? Now this is where it gets strange.
I carried out the test again pressurised to 1 bar and isolated. Went back next morning 12hrs and pressure was the same until i opened the flow pipe and it went to 0.8bar
Carried out the test again same as above but this time re opened the flow and retuen in 3 hours and you guessed it 0.8bar again
So i decided to fill up to a bar and drain a rad until the boiler showed 0.8bar so i then coulf see how much water im losing i got 600ml out and as the 1st 4m or so of my pipework is 22mm i calculated that to be aboit 2m worth of pipework where the leak roughly woild be as its obviousky not leaking past this point.
If i leave the flow and return valves open on the boiler it will reach 0 pressure as its obviously feeding the leak.
My boiler is in the loft which gives me the conclusion my leak is around 2m down the flow pipe from the boiler. I can see the 1st 4m of pipework and its bone dry lol.
My question is is my assumption its on the flow pipe bull as when i drained the rad down manually or when it gets to 0.8 from the leak could that also be on thw return pipe? For example qhen i drained the radiator what pipe is it taking water from or is it about the same on both pipes
Thanks
Dave