Question
While servicing a boiler, I came across a U6 meter, which was painted white and had no test dial. How do I carry out a gas rating test on an appliance with this type of meter installed?
Answer
These meters read the consumption in cubic metres (m3), not in cubic feet (ft3) and therefore you would gas rate an appliance connected to this type of meter using the same procedure as for an electronic E6 meter. The figures on the meter display move significantly quicker than those on the U6 meter type and update the gas-flow measurement every two seconds. To compensate, the gas flow volume should be timed over two minutes. Guidance on reading such a meter index is given in Essential Gas Safety (GID1) from the CORGI Gas Installer Manual Series, which is available by using the following link www.corgi-direct.com