SC-20D
Regulator for solar collectors
The regulator is designed to control the temperature in the solar collector installation. The device controls [OUT1] the collector pump and [OUT2] an additional heat source (boiler, heater). The second source is switched on when, on cloudy days, the energy from the collectors is low and it is necessary to heat the tank from another source. The additional output [OUT2] can also be used to control the HUW circulation pump or the valve.
[d] Pliki do pobrania
Dane techniczne
| entrances | |
cylinder sensor (T1): collector sensor (T2): logic: | NTC 5kW at 25°C B25/50=3470 NTC 5kW at 25°C B25/50=3470 bi-state NO/NC (alarm from STB limiter) |
Measurement range: | -50...+150°C |
Outputs: | relay 20A 250VAC 4500W, relay 8A 250VAC 1500W, |
Sampling period: | 330 ms |
Indication resolution: | 0.1°C over the entire range |
Setting resolution: | 0.1°C over the entire range |
Display: | LED, 4 digits 11mm high with graphic icons |
Adjustment method: | ON-OFF with hysteresis |
Adjustment Accuracy: | adjustable in the range of 0.1...20.0°C |
Additional features: | - MIN and MAX temperature alarm - acoustic signaling of temperature alarm and sensor failure - SMART function - defrosting for refrigeration applications |
Installation: | DIN rail TH-35 |
Degree and protection class: | IP65/II |
Power consumption: | max 3VA |
Working conditions: | -5...60°C; 0...85%RH (non-condensing) |
Basic information about the product:
Control of the collector pump and the second heat source
DIN rail mounting
DHW pump control
Protection against freezing and overheating of the tank
Measurement and setting with an accuracy of 0.1°C
Displaying T1 and T2 alternately
Beeper
2 stainless steel temperature probes included
Mode of operation:The regulator will switch on the collector pump only after the medium is heated up, i.e. after reaching the necessary difference between the temperature of the tank and the collector [T2-T1]. The second output, depending on its own heating system, controls the tank temperature [T1] and switches on additional devices:
- in the tank frost protection function, the controller will switch on an additional heat source when the temperature drops below the set value, e.g. 5°C,
- in the tank overheating protection function, the regulator will turn off the collector pump and turn on the circulation pump or valve when the temperature in the tank rises to e.g. 85°C,
- in the DHW pump control function, the regulator will switch on the pump after the water in the tank has heated up to the preset temperature, e.g. 40°C,
- in the additional heating function, the regulator will switch on the second heat source when the tank does not reach e.g. 30°C within 4 hours.
The value from the collector sensor and the tank sensor is displayed alternately every 3 seconds. You can set the controller to display only one reading. The built-in sounder indicates alarm conditions. The logical input serves as an alarm input, e.g. it signals a system failure after the STB temperature limiter has been activated. In the event of a failure, it will disconnect the entire system with the ability to maintain the failure state until manually reset by pressing the button.
If you do not know which driver to choose, please read the article.
© ESCO S.C 2024