Hi . is it on a boiler and what is it you want to test
hi, yes it is connected to a baxi 551 boiler and I need to check the gas pressure going through the regulator
Ok , on the gas valve will be an inlet test point ( opens with a flat head screwdriver.) Put your u gauge on . without the boiler running you should have a standing pressure of around 21millibar When the boiler fires thevptressure will drop, to 19mb plus or minus 2mb. This drop shows the working pressure of the gas valve .
showing 22mb on my gauge ,there is a pressure adjuster screw just below does not seem to alter pressure is there a time issue for testing
Sorry ,standing pressure could be as high as 24mb
Are you wanting to test the burner pressure?
There is an inlet pressure point and burner pressure test point . there will be a pilot adjustment screw , andcthec gas valve regulator screw( under the circular cover)
understood,should the outlet pressure tap read 7.4 mb on13.8 kw 47000 btu/h
The burner pressure has to be set as it says in the manufacturers instructions . there should be a data badge stating the burner pressure
have those details on imformation booklet and on back boiler ,many thanks.
I have an indirect heating system ,do I have to leave one radiator on at all times
sorry did not realise I was still able to talk to you,this was an after thought question I thought I had cancelled.Regarding my initial question on pressure test everything ok, many thanks.