|Fire hole door fitted and latched closed|
|Left hand bracket, one of the two for supporting the door|
With the nuts in the way, there's not a lot of space to swing an angle grinder; however, this seemed a better option than potentially breaking the hydraulically-tested boiler seal by removing a nut or two. The upper stud for each bracket was thus shortened to allow the brackets to be fitted and a nut to be squeezed in.
|Fire hole door open.|
Tab for latching the door closed is in the lower right.
It is held open by the rather lethal looking hook at the top left of the photo. (It's not really that big; it was just a lot closer to the camera!).
The short spigot protruding from the protruding bar is to attach a chain to lift the door open from its closed position - at least I think that's what it's for! It probably is because the door is mainly Aluminium and quite light in weight.