Viessmann Vitoligno 300-C Installation And Service Instructions For Contractors page 31

Configuring the supply system/charging scheme
When configuring the supply system, the following are
available for selection:
Fig. 21
Setting "2" for pellet supply via screw conveyor dis-
charge from the pellet storage room and onward trans-
portation via a vacuum supply system:
Fig. 22
Commissioning, inspection, maintenance
(cont.)
Setting "0" for pellet supply only from the pellet hopper
of the boiler with manual charging of the pellet hopper
(not shown).
Setting "1" (delivered condition) for pellet supply from
a pellet silo via vacuum supply system:
31