1.Model:SR208C 2.Automatic operation 3.with many functions 4.for separated pressurized solar system
SR208C
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 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 (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 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
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
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
SR208C 110V Temperature controller for pressuried solar water
