Viessmann VITOLIG 300 Service Instructions Manual page 31

Connection and wiring diagrams
F Heating circuit pump 1
G Cylinder primary pump
H Mixer motor 1
K Heating circuit pump 2
L Mixer motor 2
M Boiler circuit pump
Temperature sensors and remote control
Connection and wiring diagrams
(cont.)
N Module PCB
O Buffer primary controller, terminal
block
P Heating circuit 2 terminal block
R Heating circuit 1 terminal block
31