Power Pump Module; Low Water Cut-Off Device - Viessmann Vitotronic 300 KW3 Installation Instructions Manual

Vitotronic Connections
Low water cut-off connections
Low water cut-off device (typical)
(continued)
Remove jumper between
terminals L/P1 and P2 on
Power Pump Module board
when
installed.
Contact closes on water
1. Run 3-conductor cable between low
water cut-off device and Power Pump
Module.
2. Remove jumper on Power Pump
Module board (LWCO connection).
3. Connect wiring as shown in drawing
on the left.
3. Check for LWCO function after
installation is completed.
LWCO device is
Electrical connections
11