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BigBurner
As far as I am aware, anyone working on any gas appliance must ensure that the appliance is working correctly and safely after repairing it.
If he is not an RGI how can he do this![]()
He is not working on the gas side. Anyone can switch on an appliance and see if it working. In the case of a boiler, if heat is going to the rads it is OK. If he sees that the flames are odd or whatever, then he turns off and recommends a CORGI.

