Product Details
C-215 is a solar heat-collection differential-temperature circulation controller with two outputs. The first output serves a hot-water system comprising a solar collector and a single tank, providing forced hot-water circulation by starting and stopping the differential-temperature circulation pump and valve.
In operating mode, the controller frequently checks the temperature difference between the collector and insulated tank. When the difference exceeds the user-set [Start Temperature Difference], the circulation pump starts. The medium in the collector exchanges heat with the flowing low-temperature water, which is heated in the pipes and pumped to the storage tank, gradually raising the tank water temperature.When the post-circulation temperature difference falls below the user-set [Stop Temperature Difference], circulation and hot-water circulation stop, completing one cycle of heating the tank water using the solar collector.
The second output connects to an auxiliary heater to directly accelerate water tank heating.The water tank temperature sensor probe is waterproof and can be immersed directly in high-temperature water for measurement.
Get a quick overview of product features
1. The collector panel measures temperatures from -10.0 to 250.0°C, with a display accuracy of 0.1°C
2. Insulated water tank temperature measurement range: 0–110.0°C, with a display accuracy of 0.1°C
3. The collector temperature and tank temperature are displayed simultaneously
4. Monitors the temperature difference between the collector and tank in real time to control the circulation pump
5. The collector circulation output is controlled by a relay's normally open contact
6. High- and low-temperature measured values can be manually calibrated
7. Setting parameters Power off Permanent memory retention
8. The collector uses an NTC 240K high-temperature thermistor, while the tank uses a waterproof NTC 10K thermistor temperature sensor.
9. Long-distance temperature sensor measurement (100 m) requires no compensation
10. Open mounting
11. Powered by an AC80～240 switching power supply
Product Technical Parameters
| Rated voltage | AC80～240V 50/60HZ |
| Power Consumption | 3 Watts |
| Ambient temperature | -10～55℃ |
| Ambient humidity | 35～85%RH |
| Display mode | Integrated digital module |
| Input | T1 (collector thermistorNTC 240K, B=3950K) T2 (tank thermistor NTC 10K, B=3435K) |
| Measurement range | Collector temperatureT1:10℃～120℃, Tank temperatureT2: 0～110℃ |
| Measurement accuracy | 0.5FS% |
| Control output | Two ON/off relay switches |
| Relay Contact Load Capacity | 1. Resistive load: 5A, 250VAC; supports equipment up to 1250W 2. Inductive load: 1A, 250VAC; supports equipment up to 150W 3. If the load current is >5 A (resistive) or >1 A (inductive), an AC contactor must be used for switching. |
| Extension wire | The sensor cable can be extended up to 100 m using ordinary wire |
| Power-off memory | Long-term memory retention function with power down setting parameters |
| Weight | Gross weight: 290 g; Net weight: 204 g |
Product packaging, specifications and weight
| Exterior dimensions | Length 58 × width 78 × thickness 85 mm |
| Installation Dimensions | Panel cutout mounting, cutout size 51 × 71 mm |
