Intelligent Solar Water Heater Controller SR868C8 - SR868C8

Solar Controlling System Working Schematic:

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 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, 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.

Solar Water Heater ControllerApplications Capacity:

1.Max number of collectors:1

2.Max number of storage tank:1

3.Max number of relays:4

4.Max number of sensors:5.

5.Max number of application system:1

Solar Water Heater Controller Main Functions:

1.Time heating
2.Temperature difference control
3.Collector emergency shutdown
4.Collector cooling function

5.Anti-Legionella function
6.collector low temperature protection
7.collector frost protection
8. Maximum temperature of tank(1*storage tank)
9. Tank re-cooling function
10.Celsius and Fahrenheit temperature exchange
11. Temperature controlled hot water circulation pump
12. High temperature by-pass function(Collector cooling down)
13. Manual mode(for 4 outputs:P1,P2,R1,H1)
14. Password setting
15. Recovery to factory setting
16.Holiday function
17.Manual heating
18.Temperature query function
19.Memory Protection
20.Anti-dry heating Protection
21.Screen protection

22.Trouble shooting

23.Trouble protection

24.Trouble checking.

25.nMIN Solar circulation pump speed adjusting (RPM speed controlling)(Only available on SR868C8Q)
26.OHQM Thermal energy measuring (Only available on SR868C8Q)
27.INTV Pump interval function (Only available on SR868C8Q)

Solar Water Heater Controller Technical Data:

1.Dimension:120m*120m*18m

2.Power supply:220V-240V AC or 100V-130V AC,50-60Hz.

3.Power Consumption:<=3W

4.Accuracy of temperature measuring:+- 2 Celsius Degree

5.Range of tank temperature measuring : 0~110 Celius Degre

6.Range of collector temperature measuring : -10~200 Celsius Degree
7.Suitable Power pump:3 pumps possible to be connected, power of each pump<300w.Suitable power of electrical heater 1PC,<=1500W.

8.Inputs: 4 sensors, 1pcs*Pt1000 sensor.(<= 500 Celsius Degree) for collector( silicon cable<=280 Celsius Degree) ;3pcs NTC10K,B3950 sensor(<=135 Celsius Degree) for tank(PVC cable<=105 Celsius Degree)

9.Outputs: 4 relays, for circulation pumps or 3-way electromagnetic valve.

10.Ambient temperature: -10~50 Celsius Degree.

11.Water proof grade:IP40.