Anti-Condensation Heater; Commissioning - Wilo Atmos GIGA-I Einbau- Und Betriebsanleitung

en
W2 U2
PTC
U1 V1
L1 L2
Fig. 15: Y-connection
W2 U2 V2
PTC
U1 V1 W1
Fig. 16: Y-Δ-connection
8.1

Anti-condensation heater

9

Commissioning

62
V2
W1
L3
• The mains connection is dependent on the motor power P2, mains voltage and activation
type. Refer to the following table and Fig. 10, 11 and 12 for the required connection of
the connection bridges in the terminal box.
• When connecting automatic switchgears, observe the corresponding installation and op-
erating instructions.
Activation type
Direct
Y-Δ start
Table 8: Terminal assignment
We recommend an anti-condensation heater for motors which, due to climatic conditions,
are at risk of condensation. These are, for example, idle motors in humid environments or
motors that are exposed to large temperature fluctuations. Motors equipped with an anti-
condensation heater at the factory can be ordered as special versions. The anti-condensa-
tion heater is used to protect the motor windings against condensation water inside the
motor.
• The anti-condensation heater is connected to the terminals HE/HE in the terminal box
(connection voltage: 1~230 V/50 Hz).
• Electrical work: Electrical work must be performed by a qualified electrician.
• Installation/dismantling work: The installation/dismantling must be carried out by a
qualified technician who is trained in the use of the necessary tools and fixation materi-
als.
• The product must be operated by persons who are instructed on how the complete sys-
tem functions.
Motor power
P2 ≤ 3 kW
Mains voltage
3∼ 230 V
Δ-connection
(Fig. 10)
Remove connection
bridges.
(Fig. 12)
NOTICE
Use of soft starters is recommended to limit the starting current and pre-
venting tripping of overcurrent protection devices.
CAUTION
Risk of damage due to incorrect handling!
The anti-condensation heater may not be switched on during motor op-
eration.
Installation and operating instructions • Wilo-Atmos GIGA-I/-D/-B • Ed.01/2023-06
Motor power
P2 ≥ 4 kW
Mains voltage Mains voltage
3∼ 400 V 3∼ 400 V
Y-connection Δ-connection
(Fig. 11) (Fig. 10 above)
Not possible Remove connection
bridges.
(Fig. 12)