yes it is a honeywell. it has that cylinder thermostat.
It has the same water tank in the attic as the one in the picture with the tank on top of the boiler but it is in the attic not above it.
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There is a big tank and a small tank in...
I have a honeywell boiler L641A1005 which doesn't seem to have any water in it.
I have checked the cistern/watertank in the attic and it doesn't seem to be at a high enough level to allow water to reach the pipe, so it is not flowing into the boiler. The cockstop in the tank in the attic does...