Solar heating for the home heating and dom hot water

There needs to be more discussion about proper sizing of Solar Hot Water Systems.  There is an application for Exquisite Heat Control for solar injection to heating systems return water in the milder seasons.  By increasing the solar panels on the roof, the left over heat not needed for Domestic hot water can be put right into the Heating system.  By disconnecting the boiler fire, and analysis of the needed temperatures in the radiators, Exquisite Heat can operate a solar energy heat exchanger motor to warm the heating system return water to the needed temperature in the building or home.  This removes the condensation problem below 140 degrees. Thermostat analysis will determine the need for heating the return water.  The control can either inject Solar energy if greater than the return water temperature on demand from the thermostat, or it can fire the boiler to meet the miniumum demand temperatures nesded.  As days temperature changes twenty degrees from noon to 4 AM, the control can operate the total system.  This should save many BTU's from fuels over the years.  This method can also be employed with geothermal, heat pump systems