SR1028 Controller

Product name:SR1028 Controller
Size:205 mm × 150 mm × 60 mm
Apply to:Separated Pressurized Solar System
Guarantee Period:1 Year

Categories: Suitable For Separated Pressurized Solar System Tags: Controller
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Note: T3 is alternative sensor, when no sensor (T3) is installed in the top part of tank, controller will use the signal of sensor T2 automatically to control the auxiliary heating or the circulation pump.

1 collector array – 1 storage tank – 1 pump and auxiliary heating

The solar circuit pump (P1) is switched on as soon as the switch-on temperature difference (△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 (△Toff), or the temperature of storage tank (T3) reaches the preset maximum storage temperature, then the solar circuit pump ( P1) 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.

Appearance of controller 205mm×150mm×60mm
Power supply: AC230V±10%
Power consumption: < 3W
Accuracy of temperature measuring ±2°C
Range of collector temperature measuring -10~220°C
Range of tank temperature measuring 0~110°C
Inputs 1 x Pt1000 sensor (≤500°C) for collector (silicon cable≤280°C),
2 x NTC10K, B3950 sensor (≤ 135°C) for tank, (PVC cable ≤105°C),
Outputs 1 relays, for circulation pumps, power: ≤ 600W
1 relay for electrical heater, power: ≤ 1500W
Ambient temperature: -10~50 °C
Water proof grade: IP43

1. Main menu DT O & DT F Temperature difference function
2. Main menu – THET timing heating
3. TEMP Temperature main menu
EM Emergency collector temperature(Emergency switch-off temperature of collector)
CMX Maximum limited collector temperature (collector cooling function)
CMN low temperature protection of collector
CFR frost protection of collector
SMX Maximum temperature of tank
REC Tank re-cooling function
C- F Celsius and Fahrenheit temperature transferring
4. HND Manual mode
5. PASS Password setting
6. LOAD Recovery factory setting
7. Manual heating
8. Holiday function
9. Temperature query function
10. Protection function
Memory protection
Screen protection
11. Trouble shooting
Trouble protection
Trouble checking

SR1028 working principle drawing

SR1028 controller front viewSR1028 controller lateral view

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