nest Learning thermostat - Adjusting Away Temperatures; Setting Safety Temperature Limits; Screen Brightness Adjustment; Temperature Display Units (°F;°C)

District heating with electrical control valve
L
N
District heating valve
12 V
3 A
230 V AC/50 Hz
N L 1 2 3 4 5 6 OT1 OT2 T1 T2
LN
Input power
Wiring specs
25