On Sunday, 29 September 2019 16:22:34 UTC+1, David WE Roberts (Google) wrote:

Further information.

The boiler is old (similar to the one in the property we moved into in
1984) so no fancy pressurised bits, nor room sealing.

I am assuming those large "lift off" burners like an industrial oven which
are cleaned by lifting out and wire brushing then vacuuming or blasting
with air. However I didn't look.

The boiler is inside a large airing cupboard with a closing door and there
is ventilation through the suspended floor.

So potentially less risk than if it was free standing in e.g. the kitchen.

Safety check is sensible, but the boiler needs to be running for frost
protection.

Cheers


Dave R

it doesn't change anything, either you test it or cross your fingers.