CHARGE BOILER CONTROLLER ST-28 SIGMA TECH

Charge boiler controller

The ST–28 Sigma temperature controller is designed for charging central heating boilers. It controls the water circulation pump, hot water pump and fan. Four pump modes to choose from: home heating, boiler priority, parallel pumps, summer mode. The controller housing is adapted for installation on the boiler.

Functions performed by the controller:

• Fan control
• CH pump control
• DHW pump control
• possibility of connecting a room regulator
• slower fan operation when approaching the set temperature

Controller equipment:

• LED display
• CO temperature sensor
• temperature protection (thermal)
• The controller housing is adapted for installation on the boiler

Product parameters

• Power supply, V, 230V +/-10% / 50Hz
• Maximum driver power consumption, W, 4
• Ambient temperature, °C, 5÷50
• Maximum load of pump output CO, A, 0,5
• Fan output load, A, 0.6
• Max. load of DHW pump outlet, A, 0,5
• Accuracy, °C, 1
• Temperature Setting Range, °C, 45÷85
• Sensor Temperature Resistance, °C, -25÷90
• Fuse Insert, A, 3,15
• Temperature Range, °C, 0÷85