I am connecting an oil-fired boiler and a Rayburn to a hot water cylinder.
The boiler is a pumped system through the main heating coil and the Rayburn
will connect to a "sidewinder" coil fitted towards the top of the cylinder.
Will the sidewinder only make the top half of the cylinder hot, leaving cold
water at the bottom? Should I be trying to add a second cylinder, with a
heating coil at the bottom, to ensure enough hot water without running the