Recent content by Marky_Sparky

I had the same problem, the Drayton RT212 fits, its an M30 screw attachment. I got one next day at screwfix.

It is 1500mm x 300mm foam lagged and the immersion is 27inch.

OK thanks, is there any other way of stopping the heat loss?

Thanks, what problems will it cause?, this is what I found https://en.wikipedia.org/wiki/Heat_trap

The information I found shows the heat trap between the top of the cylinder and the rising part of the open vent. As I had no room directly above the tank I have put the U section rather lower than ideal as can be seen in the picture. The bottom part of the U is out of sight.

I know this is an old thread but I found it as I had the same problem. Despite the water being very hot one day by the following morning there was no heat at all. We have a solar PV system that heats the water via the immersion heater when there is excess electrical power available. So all...