Our three channel differential controller prioritises heating of domestic hot water from the lowest cost source and conserves heat in the domestic hot water tank when the input medium temperature is too low.
– Solar accumulation tank.
– Solid fuel boiler (such as wood gasification).
– Electric resistive heater (immersion heater).
If the domestic hot water temperature is below a preset limit, the controller will check to see if an input source temperature is above a preset delta, the source is used to heat the domestic hot water. Inputs are prioritised in the list order, above.