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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 (△T off), 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 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.

1. Appearance  of  controller:   178mm×120mm×43mm   
2. Power  supply:   AC230V±10%   
3. Power  consumption:   < 3W   
4. Accuracy  of  temperature  measuring:   ±2centigrade   
5. Range  of  collector  temperature  measuring:   -10~220centigrade   
6. Range  of  tank  temperature  measuring:   0~110centigrade   
7. Suitable  power  of  pump:   3, ≤  600W   
8.inputs:   1  x  Pt1000  sensor  (≤500 centigrade)  for  collector  (silicon  cable≤280 centigrade),  

9. 2  x  NTC10K,  B3950  sensor  (≤  135centigrade)  for  tank,  (PVC  cable  ≤105centigrade),  
10. Outputs:   1  relays,  for  circulation  pumps  
11. 1  relay  for  electrical  heater   
12. Ambient  temperature:   -10~50  centigrade  

1.Main menu DT O & DT F Temperature difference function
2.Main menu-THET timing heating
3.TEMP Temperature main menu
4.EM Emergency collector temperature (emergency switch-off temperature of collector)
5.CMX Maximum limited collector temperature (collectorcoolingfunction)
6.CMN low temperature protection of collector
7.CFR frost protection of collector
8.SMX Maximum temperature of tank
9.REC Tank re-cooling function
10.Celsius and Fahrenheit temperature transferring
12.PASS Password setting
13.LOAD Recovery to factory setting
14.Manual heating
15.Temperature query function
16.Protection function
18.Anti-dry heating Protection
19.Screen protection