When selecting the thermostat position you need to consider the height of the heating coil.
And if the flow is in at the top or the bottom.
On a pumped system it is often better to put the flow into the bottom as it heats up quicker and will heat up more water in the cylinder.
The pump flow rate will determine the temperature differential across the heating coil. Round about 10 C is probably about typical and should work fine.
And if the flow is in at the top or the bottom.
On a pumped system it is often better to put the flow into the bottom as it heats up quicker and will heat up more water in the cylinder.
The pump flow rate will determine the temperature differential across the heating coil. Round about 10 C is probably about typical and should work fine.