advice please

[plumbdoctor]

went to a job today new boiler installed did a tightness test 2mbar drop over about 5mins lol im a bit worried about it cos only one esisting appliance and pipework is a short run all in copper ? what would you guys do and yes i am gsr i hate any drops on gas

[APPlumbing]

If its a short run and in copper could you not try and trace it? Did you isolate the boiler?

[Thoggy]

I would isolate the other appliance, test again if it passes you no its that even though you can leave up to 4mbar drop on existing I don't like leaving it with any.

[BLOD]

don't understand why your testing it for 5 mins ?

[Thoggy]

I think he was bit paranoid so let the test run maybe to be sure of drop?

[Koogatubac]

I had a similar scenario, gas line all in the wall on a new build, had a drop of 0.5 mbar over the test period. Isolated what i could and could find anything. Sprayed all joints, no bubbles...

Was a u6 meter, permissable drop 4mb, couldnt smell gas either. I recorded it in my notes after i tested it 6 times and tested it on another u guage with the regin fluid, could be my eyes even..

[neily01]

small installs can be the worst! just touching the pipes with warm hands while on test can make the gauge dance about. ensure the carcase is correct and sound and that any drop is on appliances. but like you hate any drop even if permissable , find out where it is and rectify!

[glenno1]

Like said before isolate other appliance and re-test,then isolate boiler to see if it is the pipe work

[Koogatubac]

What if you cant isolate the other appliance, say the hob, how would you know if its the hob or the pipework then?

[croppie]

How long was your stabilisation?

[heliotrope]

What if you cant isolate the other appliance, say the hob, how would you know if its the hob or the pipework then?

I have had the situation in the past when an appliance cannot be isolated.

Cut the pipe and cap it. Test and reconnect pipe when test completed.

Takes a bit of time but is thorough.

[Koogatubac]

I have had the situation in the past when an appliance cannot be isolated.

Cut the pipe and cap it. Test and reconnect pipe when test completed.

Takes a bit of time but is thorough.

If its only a hob and a boiler? Boilers easy to isolate but i dont think the custard who normally watches me literally all the time lol sure they wont like me taking their full cupboards and oven out to cap their pipework.

Hobs should be made with a iso valve that you can turn off lol

[glenno1]

Agree with above or spray leak detecter on hob connections or use sniffer in the area (Did i pass koogatubac)

[Koogatubac]

You always pass glenn XD

Yeah i should of used my gas sniffer on my new flue gas analyser. Im still getting to grips on all the features it has!

What i dont agree with gas is all the permissable drops. 4mb on a u6! C'mon thats crazy!!

[AWheating]

ask the customer if they want you to trace the leak as its extra work with extra costs.