Translation from the original operating instruction
40
AL-KO AIR HEATER / AIR COOLER INDUSTRY
Circuit diagram:
1/3
1/3
1/3
Electrical Heater
Standard design
to air heater
INDUSTRIAL EL
control 3 x 1/3
rated capacit
y
Room thermostat (accessory
)
M
3~
Flow switch (air
)
(On-site integr
ation
)
3L + N + PE
F1 = pre-fuse
for control unit,
max. 10A
Drive
U = 400V
I = max. 6A
K1
K2
K3
ZS-E 400 (accessory)
L1
L2
L3
L3
P
N
PE
PE
U1
V1
W1
U2
V2
W2
1
2
5
6
PE
3
4
PE
N
7
8
9
PE
L1
L2
L3
N
1
2
3
4
5
6
17
PE
7
8
9
18
PE
10
11
12
19
PE
PE
N
PE
L1
L2
L3
L1
L2
L3
L1
L2
L3
1
2
PE
PE
TW
STB Gr
.
1
STB Gr
.
2
STB Gr
.
3
S1
F1
F2
F3
F4
Air heating devices with electrical air heaters must be operated to ensure that the air heater cannot be switched on
when the fan is switched off.
The electrical air heaters must be deactivated as soon as the air flow is inappropriately reduced.
The switching-off procedure for the electrical air heater must be implemented to ensure that the fan runs for at least
3 minutes after the electrical air heater has been switched off in order to prevent overheating.
The temperature should be adjusted to 30°C.
The electrical connection may only be performed by a registered electrician and with consideration of the
DIN VDE 0100-420 regulations and the local energy supply company.
