ABB Niessen 8140.9 / N2240.3 Floor Thermostat User Manual

This document is a multilingual user manual for the ABB Niessen floor thermostat (model 8140.9 / N2240.3), covering installation, connection, operation, and technical specifications. It provides detailed instructions for setting the control temperature via a rotary knob, interpreting LED indicators (red for heating, green for idle, blinking red for sensor faults), and ensuring safe electrical installation with a floor temperature sensor.