1 collector array – 1 storage tank – 1 pump and auxiliary heating Description: The solar circuit pump (R1) is switched on as soon as the switch-on temperature difference (△Ton) between the collector array (T1) and the storage tank (T2) is reached. If the temperature difference between the collector array (T1) and storage tank (T2) drops below the switch-off temperature difference (△Toff), or the temperature of storage tank (T3) reaches the preset maximum storage temperature, then the solar circuit pump ( R1) is switched off. Back-up heating by auxiliary boiler (detailed see paragraph 4.3): Within the preset time section of back-up heating, if the temperature T3 is below the switch-on temperature, then the circulation pump ( H1) of back-up heating is triggered, when T3 is heated to the switch-off temperature, circulation pump H1 of back-up heating is ceased.
Main technical data
Dmension: 120mm x120mm x23mm
Installation: wall mounting,also suitable for mounting into patch panels
Power supply:200V-240V AC or 100V-130V AC,50-60Hz. .
Power consumption: < 3W
Accuracy of temperature measuring: ± 2℃
Range of collector temperature measuring: -10 ~200℃
Range of tank temperature measuring: 0 ~110℃
Suitable power of pump: 4 pumps possible to be connected, power of each pump < 200W .
Inputs: 5 sensors,
Pt1000 sensor (≤500℃) for collector (silicon cable≤280℃),
NTC10K, B3950 sensor (≤ 135℃) for tank, (PVC cable ≤105℃),
Outputs:4 relays, for circulation pumps or 3-way electromagnetic valve
Ambient temperature:-10℃ ~ 50℃.
Water proof grade: IP40.