Installing Metric Screw Joints on the Fronius
String Control 250/25 DCD DF
Preparation
General
-
-
-
Recommen-
ded Sequence
for Inserting
the Metric
Screw Joints
1
1
1
1
Insert metric screw joints corresponding to the number of available
solar module strings, insert threaded plugs in the empty positions.
Follow a specific sequence when inserting the metric screw joints:
from bottom to top and from outside to inside.
Use the specified tightening torque corresponding to their size for the
metric screw joints and threaded plugs.
25
5
4
3
2
1
6
* only for optional overvoltage protection as outlet for the ground cable
1
M16
M20*
27
M32/M40 M32/M40
M25
28
29
26
12
54
34
M16
33
32
31
30
35