04/03/2021 · Basically the working pressure at the gas meter is 21 +- 2mb. (19-23) you are allowed a 1mb drop across your pipework to the appliance connection point. Modern condensing boilers have a small drop from the connection point to the test point inside the case.
15/09/2020 · The exact pressure for your combi boiler can be measured on the boiler pressure gauge which is normally on the front of your boiler some are more advanced LCD/digital control panels, while others are a simple metre or gauge with needles. Youre looking for something that on a normal day, will read 1 to 2 bars.
This is where that filling loop (or filling link) comes in again! If the pressure gauge on your boiler indicates high pressure (above 2.75 bar), then you may need to bleed a radiator to bring the level down to around 1.5 bar. This can be tricky and, occasionally, dangerous;
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30/03/2012 · The working pressure should have been checked, this should be 21+/-2mbar, then at the appliance this should be no more than 1mbar drop across the system. So if it's 20mbar at meter the minimum it can be at boiler is 19mbar. If the drop across the system is
13/03/2011 · By sound of it you will either need the supply pipe from meter to boiler re-run or have the meter cranked up to a standing pressure of 25 or 26 mbar to give you the gas. D donkeeboy
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16/05/2016 · A common operating pressure for natural gas appliances is around 7 inches of water column (WC) or re-stating this in equivalent measure, that's 14.9 millibars or 1743 Pascals or Pa, or about 0.25 psi (pounds per square inch) or about 4 ounces of pressure per square inch. See NATURAL GAS APPLIANCE PRESSURES for details.