Viessmann Vitoligno 300-C Installation And Service Instructions Manual page 17

Pellet supply via vacuum system
Setting the power stage on the vacuum module
The vacuum module can be set to 2 power stages. In
the delivered condition, it is preset to the low power
stage. Depending on requirements, it can be converted
to the high power stage simply by swapping plugs
and directly on the vacuum module. Select the
B
power stage in accordance with the following chapter.
Fig. 9 Arrangement of the power stage plugs in the
delivered condition
Plug (with 2 jumpers) for high power stage in the
A
retainer
Plug (with 1 jumper) for low power stage in the slot
B
Types of charging with vacuum system
Manual changeover unit and suction wands
Pellet box with discharge via suction wand
Pellet silo with discharge via suction wand
Underground tank with discharge via suction wand
Pellet silo with discharge via screw conveyor
Automatic changeover unit and suction wands
Mole
Pellet storage room with screw conveyor discharge
If possible, use of the low vacuum module power stage
is preferred:
■ Lower noise emissions
Longer service life
■
Lower power consumption
■
Less pellet damage
■
(cont.)
A
A
2.
B
1.
After commissioning the system, check the suction
power and change the selected power stage if neces-
sary.
Selecting the appropriate power stage
For use of the low power stage, the following condi-
tions must be met:
■ Suction head: max. 2.5 m
■ Suction length: max. 15 m
If these dimensions cannot be adhered to, the high
power stage must be used.
The following table is provided as a further guideline.
Low power stage
X
X
X
-
-
-
-
X
Conversion to the high power stage can increase the
functional reliability of the vacuum system.
Installation sequence
High power stage
X
X
X
X
X
X
X
X
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