Pr
e-hea
t/cool
Afterhea
ter
Alarm
Input
CO
₂
Aux
After
cooler
J6
J11
J7
J8
J9
J10
J12
J13
P
ow
er In
24VDC
24VDC
24VDC
12V
USB
Fail
OK
Status
Elec. PH
0V
0V
D+
D-
T
Fire
Therm
+
-
+
-
Input
Damper 1
Open
Open
Damper 2
ModBus
1
+
2
+
T1GTC
+16V
Standby
Switch
Hygro-
stat
Fail
Alarm
Filter
Alarm
+12V
SDA
SCL
TFAH
T2AH
T2AC
0 - 10V
0 - 10V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 - 10V
0 - 10V
J1
J2
J3
J4
J5
Humidistat input
Filter alarm output
Fault alarm output
Standby input
0-10 V
external fan
activation input
USB connection / firmware
Not active
N
ot
a
ct
ive
Not active
Fire / smoke
alarm input
Not active
Not active
Modbus / connection to the
ventilation unit and / or
connection to the control unit.
5.3 Schematic connection diagram
5 Technical data
6 Wiring diagrams
The connection box must be wired and put into operation according to the following wiring diagrams.
All connection activities must be performed in the “dead” state only since otherwise the connection
box or the mainboard of the ventilation unit may get damaged.
All connection activities must be carried out by authorised and qualified personnel only. In addition,
applicable local regulations and safety provisions must be complied with.
Installation instructions / operating instructions – profi-air flat / flex connection box
5
