Inlet working pressure test

[plumbing1981]

Hello

When you are measuring the inlet working pressure on an appliance do you have to have the appliance running at the same time? I'm guessing it would not matter if it was on or not but in assesment world things are different. Does anyone know the right way of doing this test, thanks

 

[CMairiD]

When I did it, I turned off the appliance, turned off the isolating valve to the appliance, undo test point screw & connect hose, turn on the iso valve and then turn on the appliance. Then do it in reverse, not forgetting to check your test point and iso valve with LDF.

If the appliance is on when you undo the test point, you are allowing gas to escape which is a no-no in assessment.

 

[pobsdad]

The clue is in the 'working pressure' bit.With the appliance off,a restricted pipe could easily produce 20mb or above,but fire up the appliance,and this could drop to below the recomended minimum.Remember that the difference between working pressure at the appliance,and at the meter should be not more than 1mb.Working pressure is when the appliance is 'working',and standing pressure is when the appliance is 'standing',at rest.

 

[SafeGasInstall]

Hello

When you are measuring the inlet working pressure on an appliance do you have to have the appliance running at the same time? I'm guessing it would not matter if it was on or not but in assesment world things are different. Does anyone know the right way of doing this test, thanks

you kidding me !!!!

 

[Billy Bob Bob]

must be a April the first wind up

 

[SafeGasInstall]

i did not know how to take it ......well with big smile

 

[paulnwales]

joke??

 

[danielp]

there's two tests standing pressure appliance off and working pressure appliance on

 

[Hobo128]

This is not a good sign, Read through your essential gas safety again!
Working pressure = appliance is working....
Put manometer on test valve at meter.. turn appliance on... note reading on manometer.. eg 20mb
Next..Put manometer on test valve on appliance.. turn on appliance.. note reading... eg 19mb..
There can be no less than a 1mb drop in pressure...