Non pressure solar water heater controller SR501
SR501, micro-computer automatic controller for solar water heater,
It is used to control integrated un-pressurized solar thermal
system. It is developed using the latest NEC high-performance
microcontroller to achieve intelligent control; All devices are
industry standard and maintain good operation in cold, hot and
At the same time, it uses a dedicated clock chip, accurate time
control. The controller uses LCD liquid crystal display, the
appearance of beautiful, stable and reliable performance, easy
installation, making it the best matching products for solar water
Main technical data:
3.Accuracy of temperature measuring:±2℃
4.Range of tank temperature measuring:0~99℃
5.Accurancy of temperature control:±2℃
6.Power for water loading:≤200W
7.Power for self heating cable:≤600W
8.Power for heating element:≤1500W /3000W(Two model number can be
9.The electromagnetic valve: DC12V/ AC220V,(Optional pressure valve
and low pressure valve)
10.Pressure valve working pressure: 0.02Mpa~0.8Mpa (For direct
11.Low-Pressure valve working pressure: 0.0Mpa (Water supply by
water tank or low water pressure)
1. SET CLOCK
2. Timing control water loading and backup heating at preset three
3. Temperature controlled water loading.
4. CTH Constant temperature heating.
5. LWPR Low water pressure protection
6. CWL Constant water level filling(preset 100% water level of
7. PUMP Water filling pump
8. TCYC recirculation by temperature/flow within three
9. AH Automatic thermostat function
10. OTF Three time –sections setting
11. TKPR Tank high temperature protection function.
12. CFR Tank anti-freezing protections.
13. LWS Preset the water level of water filling when tank is lack
14. LWSD Run-on time of water filing when tank is lack of water.
15. OTDI Thermal disinfection.
16. UNIT Celsius degree and Fahrenheit unit switch
17. BEEP Beeper error warning
18. Manual water filling.
19. Compulsive water filing function.
20. Manual heating.
21. Manual DHW circulation
22. Factory reset manually.
23. Water level water temperature sensor sensitivity adjustment
24. Pipe anti-freezing protection function.
25. View the measuring valve.
26. Overflow protection.
27. High temperature protection of collector tube’
28. Memory protection
29. Screen protection.
30. Trouble protection.
31. Error code description.