Wiring in a hive for a Worcester combi 30i

Hi here I have a short video explaining how to wire in a hive for a Worcester combi 30i. This is wired in only to work on heating. PLEASE ONLY ATTEMPT THIS IF YOU ARE A QUALIFIED GAS ENGINEER/ELECTRITIAN. IF YOU TRY THIS ON YOUR OWN. THEN YOU ARE THE ONLY ONE LIABLE SO PLEASE CALL A QUALIFIED ENGINEER.