Single-circuit Electronic Control Panel

Solartek Forced Air Circulation Package Systems contain a single-circuit electronic control panel supplied as a standard accessory in delivery. Said panel controls solely the circuit between the solar collector and the double-serpentine boiler.

As shown in the figure given, heat data detected by Pt-1000 type sensors as designated by T-1 and T-2 will be compared by the electronic control panel in terms of differential temperature. According to factory adjustments, when the temperature difference between the sensor (T-1) mounted on the collector and the sensor (T-2) provided adjacent to the lower serpentine of boiler exceeds the value of 8K, the control panel will send a signal to the pump (P-1) to operate so that the energy stored in the collector will be transferred to the boiler. Thus, after a while the temperature of water in the boiler will reach to a value close to the temperature of water in the collector. When the temperature difference reaches a value of 4K, the operation of the pump (P-1) will be stopped by the control panel.

As long as the amount of solar energy available is adequate, the same operational steps will be repeated continuously to heat the water in the boiler.