Grundfos UPM3 - Control Signals; Digital Low-Voltage PWM Signal

30 31
L
PE
N
1 x 230 V - 15 %/+ 10 %
∽ 50/60 Hz
5c
HYBRID, FLEX AS, AUTO,
AUTO2, DHW, SOLAR
EXTERNALLY
CONTROLLED
IN
REF
OUT
6