starship enterprise controls
Merely the hot water cylinder on your right, the electricals where all the wires come together, the equaliser is a grey thing with copper pipes, and the white thing's the exansion vessel for the solar heating fluid. The rest are all meters that tell you things and thermostats with "Set this one at 40" or "leave this one at 60" written on them to assist those who do not have a qualification in thermodynamics or fluid mechanics