Viessmann Vitoligno 300-C Installation And Service Instructions Manual page 33

Electrical connections
Fuel supply system connections to ZPK PCB of the
control unit
Note
For setting the charging scheme (supply system), see
"Hardware" in chapter "Codes".
Actuator connection
Supply system Charging
scheme
Setting
Vacuum module 1
with suction wand *5
or manual change-
over unit
Vacuum module 2
and discharge
screw conveyor
Vacuum module 2
and mole
Vacuum module 3
with external
charging
Vacuum module 4
with automatic
changeover unit
(2 to 8 wands)
Flexible screw 5
conveyor without
discharge motor *6
External charging 6
with proximity
switch at transfer
to rotary lock valve
Flexible screw 7
conveyor with dis-
charge screw con-
veyor for pellet
store (boilers
> 12 kW)
Flexible screw 8
conveyor with ex-
ternal charging
(boilers > 12 kW)
*3 The flexible screw conveyor is delivered with plug
potential-free
*4
e.g. pellet silo without discharge motor
*5
e.g. pellet silo
*6
(cont.)
Feed Suction
screw turbine
conveyor
sYD sYF
X X
X X
X X
X X
X X
X
X
X
X
sYK . Replace plug
Change- Flexible
over unit screw
motor conveyor
motor
sG sYH *3
X
X
X *3
Replace
plug
sYK
with
sYH
from ZPK
PCB.
X
*3
Replace
plug
sYK
with
sYH
from ZPK
PCB.
sYK with sYH from ZPK PCB.
Installation sequence
Pellet Ext. charg-
store dis- ing
charge
screw
conveyor
motor
sYK sYL *4
X
X
X
X
X
X
X
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