CONTROLLER CONTROLLER FOR SOLAR PANELS ST-401N PWM TECH

ST-401 N PWM

Thermoregulator type ST-401 is designed to support the installation of solar collectors.

This device controls the operation of the main pump (collector) based on temperature measurement on the collector and in the accumulation tank.

Optionally, it is possible to connect an additional device: a circulation pump, an electric heater or a signal to the central heating boiler in order to ignite it.

Principle:

Thermoregulator type ST-401 is designed to support the installation of solar collectors. This device controls the main pump (collector) based on the temperature measurement on the collector and in the accumulation tank. Optionally, it is possible to connect additional devices such as a mixing pump or an electric heater and give a signal to the central heating boiler in order to ignite it. Control of the circulation pump and feeding the ignition signal to the central heating boiler is possible directly from the controller, while in the case of heater control an additional signal relay is necessary.

Functions performed by the controller:

• pump control
• supervision and operation of the solar system
• protection against overheating and freezing of the collector

Controller equipment:

• large clear display
• collector temperature sensor
• heat storage temperature sensor
• housing made of high quality materials resistant to high and low temperature

Product parameters

• Supply voltage, V, 230V +/- 10% /50Hz
• Maximum power consumption, W, 4
• Accuracy, °C, 1
• Temperature Control Range, °C, 8÷90
• Tank sensor temperature resistance, °C, -25 : 100
• Collector sensor temperature resistance, °C, -24÷90/-30÷180 (short-term 200°C)
• Collector sensor type, , PT1000
• Manifold pump output load, A, 1
• Load on the output of an additional device, A, 1