I have a situation where an existing boiler that was fixed to an external weatherboard wall has started to come loose. The weatherboard had some dry-wall or something affixed first to which the boiler was actually attached. The screws that held the brackets in place at the top of the boiler area have come loose (assuming that over time the elements have got to the wood underneath and it has started to rot or weaken and the thread of the screw no longer 'screwed' into it.
I am now wanting to use a new bracketing system to attach the top part of the boiler back to the wall (dry-wall) as a intermediate fix until one day when I replace the whole boiler system over.
My question is which type of brackets and screws would I need to do such a job. I was thinking a simple bracket that is long enough to affix the top of the boiler external metal frame to the dry-wall. something like a L shaped bracket with enough length to fill the gap (i.e from the wall and the Unit external casing when sitting 'upright'.
The photos attached show the current situation, where the boiler is leaning outward (not good as I assume if left like this long enough it will rip itself of the wall and cause more damage)