EN
Solar Controller
The following are three intelligent solar water heater controllers by Demax, designed to automate and optimize solar thermal system operations. Each model is tailored to specific system types (non-pressurized, pressurized, split) and features industrial-grade components for stability in harsh environments (cold, high-temperature, humid conditions), paired with LCD displays for easy monitoring and control.
- Introduction
- Main features
- Specifications
- Recommended
|
Category |
Demax SR501 |
Demax SR609C |
Demax SR81 |
|
Applicable System Type |
Integrated non-pressurized solar thermal system |
Integrated pressurized solar energy system |
Split Solar Water Heating System |
|
Microcomputer Chip |
Latest NEC high-performance microcontroller |
Latest Dutch NXP high-performance single-chip microcomputer |
Latest Dutch NXP high-performance single-chip microcomputer |
|
Dimensions |
205mm×150mm×50mm |
1500W: 187mm×128mm×46mm; 3000W: 205mm×150mm×50mm |
Keypad: 120mm×120mm×18mm; 1.5KW: 187mm×128mm×46mm; 3KW: 218mm×165mm×55mm; 4KW: 218mm×165mm×55mm |
|
Power Supply |
AC100-240V, 50Hz |
AC100-240V, 50Hz |
AC100-240V, 50-60Hz |
|
Heating Power Options |
≤1500W/3000W (two models) |
1500W/3000W (two models) |
1500W/3000W/4000W |
|
Temperature Measurement |
- Tank: ±2°C, 0-99°C- Water loading: ±2°C |
- Tank: ±2°C, 0-99°C |
- Collector: ±0.10°C, 0-2200°C- Tank: 0-1100°C |
|
Water Loading Power |
200W |
3W |
N/A |
|
Heating Cable Power |
≤600W |
N/A |
N/A |
|
Valve Specification |
Solenoid valve: DC12V/AC220V (optional pressure/low-pressure valve)- Pressure valve: 0.02MPa-0.8MPa- Low-pressure valve: N/A |
N/A |
N/A |
|
Ambient Temperature |
N/A |
-10°C ~ 50°C |
-100°C ~ 500°C |
|
Water Proof Grade |
N/A |
IP40 |
IP41 |
|
Core Functions |
1. Set clock2. Timed water loading/backup heating (3 sections)3. Temp-controlled loading4. Constant temp heating5. Low water level protection6. Constant level filling (100%)7. Water filling pump control8. Recirculation (3 time sections)9. Auto thermosetting10. 3-section timing11. Tank anti-freezing12. High-temp protection13. Preset level filling (low tank)14. Run-on filling (low tank)15. Thermal disinfection16. Unit switch (°C/°F)17. Beeper alarm18. Manual filling19. Manual heating20. Manual DHW circulation21. Factory reset22. Sensor sensitivity adjustment23. Pipe anti-freezing24. View measuring valve25. Overflow protection26. Collector high-temp protection27. Memory protection28. Screen protection29. Error code description |
1. LCD display2. Clock display3. Timed heating4. Circulation pump (3 time/temp settings)5. Heating time control6. Tank anti-freezing7. Unit switch (°C/°F)8. Beeper fault alarm9. Reset function10. Manual heating11. Intelligent heating12. Economic mode13. View measured values14. Protection function15. Power failure memory16. Screen saver17. Fault protection |
1. Date setting2. Timed backup heating3. Hot water circulation4. Setup loading (tank1)5. Collector16. Pump control7. Cooling function8. Auxiliary function9. Manual mode10. Blocking protection11. Thermal disinfection12. Flow meter type selection13. Unit switch (°C/°F)14. Factory setting15. Password set16. Holiday function17. Screen protection18. Trouble protection19. Trouble checking |
|
Additional Accessories |
Optional remote display |
N/A |
5 sensors (1 collector, 4 tank); 1 flow meter |
|
Outputs |
N/A |
N/A |
4 relays (circulation pump/backup heating); 3 solenoid valves (max current: 2A)- 1.5KW: 10A relay- 3KW: 15A relay- 4KW: 20A relay |
| Parameter Category | Demax SR501 | Demax SR609C | Demax SR81 |
| Dimensions | 205mm×150mm×50mm | 1500W: 187mm×128mm×46mm3000W: 205mm×150mm×50mm | Keypad: 120mm×120mm×18mm1.5KW: 187mm×128mm×46mm3KW: 218mm×165mm×55mm4KW: 218mm×165mm×55mm |
| Power Supply | AC100-240V, 50Hz | AC100-240V, 50Hz | AC100-240V, 50-60Hz |
| Power Consumption | - | - | <2.5W |
| Water Loading Power | 200W | 3W | - |
| Heating Element Power | ≤1500W/3000W (2 models) | 1500W/3000W (2 models) | 1500W/3000W/4000W |
| Heating Cable Power | ≤600W | - | - |
| Tank Temperature Measurement | Range: 0-99°C; Accuracy: ±2°C | Range: 0-99°C; Accuracy: ±2°C | Range: 0-1100°C |
| Water Loading Temperature Accuracy | ±2°C | - | - |
| Collector Temperature Measurement | - | - | Range: 0-2200°C; Accuracy: ±0.10°C |
| Ambient Temperature | - | -10°C ~ 50°C | -100°C ~ 500°C |
| Water Proof Grade | - | IP40 | IP41 |
| Rated Impulse Voltage | - | - | 2.5KV |
| Solenoid Valve Specification | DC12V/AC220V (optional)Pressure valve: 0.02MPa-0.8MPa | - | - |
| Pump Power (Backup Heating) | - | - | 1.5KW version: <1.5KW3KW version: <3KW4KW version: <4KW |
| Output Relay Current | - | - | 1.5KW: 10A3KW: 15A4KW: 20A |
