5
L
N
~
4 V
22 -2 0
0
0
5 H
z
N
L1
L2
PE
S
L
N
~
4 V
2 -2
2 0
0
0
5 Hz
N
L1
L2
PE
L
N
~
4 V
2 -2
2 0
0
0
5 Hz
N
L1
В
L2
PE
HL
5
4
1
2
3
-1-300
P3
В
В
figure 3
figure 4
figure 5
FANS' STRUCTURE AND SETTING-UP
PROCEDURES
WARNING!
All maintenance and installation
works are to be performed with the main power
off.
The air flow direction must be in a direction, that
an arrow on the fan case shows.
For a VV series fan a power source connection
scheme is shown on figure 3.
When using a VVR series fan, it is possible to
reverse an air flow direction.
To connect such a fan and make use of its
reverse function, a switch S may be used, as
shown on a figure 4; or else, the switching may
be performed using the cable connections:
- when power cable is connected to an L2
terminal, the fan operates in an exhaust mode;
- when power cable is connected to an L1
terminal, the fan operates in an intake mode.
