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Supplier Homepage Consumer Electronics Water Heater & Components Solar Water Heater Sr81 (SR868C8) 12V Split Solar Thermal Syetem Controller

Sr81 (SR868C8) 12V Split Solar Thermal Syetem Controller

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Min. Order / Reference FOB Price
10 Sets US $45.00/ Sets
Local Area: Jinan, Shandong, China
R&D Capacity: OEM, ODM, Other
Payment Terms: LC, T/T, D/P, PayPal, WesternUnion
Condition: New
Certification: CE
Application: Collector Controller, Water Heater Controller, Solar System Controller, Thermal Controller

SR81(SR868C8) 12V Solar Thermal Controller Water Heater Controller for seperate solar system
Working Principle

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 (Delta T on) 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 (Delta 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 (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.

Technical Data

1. Specification: SR81(SR868C8)

2.Appearanceofcontroller: 120mm*120mm*18mm

3. Powersupply: DC12V

4. Powerconsumption: <3W

5. Accuracyoftemperature: within2 centigrademeasuring

6. Range of collector: -10-220 centigrade

7. temperature measuring

Range of tank: 0-110 centigrade

8. temperature measuring Suitable power of pump: three pumps, : no more than 600W

9. Suitable power of: power: no more than1500W or no more than 3000W/4000W

10. electrical heater

Inputs: One Pt1000sensor(:no more than500 centigrade)for collector (silicon cable: no more than 280 centigrade),

TwoNTC10K,B3950sensor: no more than 135 centigrade for tank,PVC cable: no more than105 centigrade,

Outputs:Three relays, for circulation pumps or 3-way electromagnetic valve

One relay for electrical heater

11. Ambient temperature: -10-50 centigrade

12. Water proof grade:IP40

Main Functions

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 (collector cooling function)

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

11. FUN Auxiliary function

12. DVWG Anti-bacteriafunction

13. CIRC Temperature controlled hot water circulation pump

14. nMIN Solar circulation pump speed adjusting (RPM speed controlling)(only available on SR868C8Q)

15. OHQM Thermal energy measuring (only available on SR868C8Q)

16. INTV Pump interval function (only available on SR868C8Q)

17. BYPR High temperature by-pass function

(tank temperature automatically adjusting)

18. HND Manual mode

19. PASS Password setting

20. LOAD Recovery to factory setting

21. ON/OFF button

22. Holiday function

23. Manual heating

24. Temperature query function

25. Memory Protection

26. Anti-dry heating Protection

27. Screen protection