Instead of nicking the other chaps post I thought I would start a new one on this interesting topic.
My opinion is that yes you can without breaching GSIU regs because of the fact that the last RGI to work on the appilance is reponsible for the safety of said appilance and the gas pipe serving it. IMO if this covers old installation why not new.
As long as the DIY'er has installed it as per manufacturers instructions, and the RGI ensures that he has taken all reasonable steps to ensure the gas safety of the installation why not?
My opinion is that yes you can without breaching GSIU regs because of the fact that the last RGI to work on the appilance is reponsible for the safety of said appilance and the gas pipe serving it. IMO if this covers old installation why not new.
As long as the DIY'er has installed it as per manufacturers instructions, and the RGI ensures that he has taken all reasonable steps to ensure the gas safety of the installation why not?