"Peter Hawkins" wrote
| The secondary cylinder has its bottom attachement pint about 6
| incles from the main cylinder bottom. The top disappears via
| pipe into the wall.

Oh. Well, the hot out of the circulator needs to get back into the cylinder
somehow so the water circulates.

| If anyone is interested see this link for a picture
| http://www.fortbaxter.demon.co.uk/hot_tank.jpg

I wonder if someone has tried to boost the output from the HW cylinder ie
the heater heats the output and does not heat the tank? Does not look like
the picture in Newnes c.1950

Owain