6.4.1 Connecting the supply voltage
230 VAC / 50 Hz
N
PE
L
1
2
3
Fig. 24: Connecting the supply voltage
1
Ölflex classic 100 3G 1.5 mm², length of at least
1 m (TROX supply package); only SCHOOLAIR-S-
HV-EH: Ölflex classic 3G 2.5 mm², length of at least
1 m (TROX supply package)
2
3.15 A fuse F3
3
SCHOOLAIR-S -HV-EH only: 13.0 A fuse
6.4.2 Connection of the control panel
Notes on control panels
Select an installation location where the control panel
is not affected by disturbances. Avoid solar gain and
draughts.
Seal the end of the conduit in the junction box as other-
wise a draught could occur in the conduit and affect the
measurement results.
Schneider, digital
GND 6
+24VDC 5
B+ 13
A- 14
GS 15
X2
RS 485
N
L
PE
+ -
Output
Input
N L
RD
BK
4 (SH)
3 (GS)
2 (B +)
1 (A -)
Slave
SH
B +
GS
A -
2
2
2
3
1
4
Fig. 25: Wiring of a digital control panel, type Schneider,
to terminal X2
1
Control panel, surface mounted, type:
TM172DCLWT, TROX order no. A00000086157
2
E.g., Unitronic BUS LD 2 × 2 × 0.22 (by others) (or
equivalent, also by others)
3
Power supply unit, Traco Power, type TIW24-124,
TROX Order no. : A00000033832
4
120 ohm resistor, set at the first and last bus node
All network connections via shielded cables.
Attention:
For A- and B+, always use a twisted pair
Installation
Making electrical connections > Connection of the control panel
Decentralised ventilation units SCHOOLAIR-S-HV
23
