Differential thermostat for solar panels

This device allows maintaining precise control of the temperature of the solar panels connected to the boiler’s sanitary hot water. It detects the boiler water temperature through the 3 provided sensors and compares it with the solar panels fluid.

When the panels temperature is higher than the boiler’s water, the control unit starts the pump allowing thermal exchange between panels and boiler. Its second main function is to use a supplementary source of heat when the temperature is lower than the set integration temperature.

In order to ensure a perfect thermal exchange, the device is fitted with a “delta T” temperature differential that varies from 1 to 9°C, and can be regulated using the knob on the thermostat front panel.

Power supply: 230VAC ~ ± 10% 50Hz
Absorption: 1 VA
Contact rating on the relays: 10A 250V. resistive
Type of sensors: NTC 47K
Sensors operating temperature: -20 ° C .. 120 ° C
Accuracy: ± 1 ° C
Resolution: 0.1 ° C
Delta differential temperature: Adjustable from 0 ° C to 9 ° C
Integration temperature: Adjustable from 30 ° C to 80 ° C
Integration switch: Automatic, Manual
Maximum distance between probes and control unit: 150 m
Cross-section of the connecting cables to the probes: 1 mm2
Operating temp .: 0 ° C .. 50 ° C
Storage temp .: -10 ° C .. + 60 ° C
Humidity limits: 90% RH non condensing
Electromagnetic Compatibility “CE”: Reference standard
Protection degree: IP20 in air
Omega DIN EN 50092 3-module bar dimensions: 52 * 90 * 52
Fixing: Electrical panel

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