A
E
R
A
A
I
R
I
N
N
O
V
A
T
I
O
N
21
Depending on the project variation, the air handling unit may have different component selections. In units where
there is no automation panel, electrical connections have been moved to junction boxes placed outside the device.
In order to reduce the starting current in motors above 4kW, “star-delta” motor connection is made.
3.12.2.1
Panel Assembly
In air handling units ordered with automation, the panel may not be mounted on the device by special request. In
this case, the automation panel can be fixed on a suitable wall around the air handing unit or an external frame. The
distance between the device and the panel should be kept as short as possible (max. 3 m).
If the device will be located outdoors, the panel should be protected from
weather conditions as much as possible.
WIRING DATA AND CONNECTIONS DEPENDING ON MOTOR POWER
Motor Power (kW)
Current (A)
Cable Cross-section
(mm²)
Cable Type
Connection style
1,1
3
4x1,5
TTR
Star (unless otherwise specified)
1,5
4
4x1,5
TTR
Star (unless otherwise specified)
2,2
6
4x1,5
TTR
Star (unless otherwise specified)
3
10
4x1,5
TTR
Star (unless otherwise specified)
4
10
4x1,5
TTR
Star (unless otherwise specified)
5,5
16
4x2,5
TTR
Star/Delta
7,5
20
4x2,5
TTR
Star/Delta
11
25
4x4
TTR
Star/Delta
15
40
4x10
TTR
Star/Delta
18
40
4x10
TTR
Star/Delta
22
50
4x16
TTR
Star/Delta
30
80
4x25
TTR
Star/Delta
3.12.2.2
3 Phase Motor Connections
Motor Voltage Unbalance,
For the supply voltage in the proper operation of the motor, measure all phase-
to-phase voltage after installation, the voltage unbalance should not exceed 2%.
CAUTION
CAUTION
Delta Connection
Star-Delta Connection
Star Connection
