Protective Grounding Wire; Residual Current Circuit Breaker; Protecting The Motor; Commissioning - SystemAir IV Smart EC Montage- Und Betriebsanleitung

16

| Commissioning

raised CO concentrations in the air. The following table provides information about the control unit's speed specifica-
tions to the fans.
Table 6 Fan speed specification
CO concentration
CO < 15 ppm Switch-off hysteresis 10
ppm
CO = 15 ppm
15 ppm < CO ≤ 50 ppm
50 ppm < CO
Fault
8.4

Protective grounding wire

The protective grounding must have a cross-section equal to or greater than that of the phase conductor.
8.5

Residual current circuit breaker

All-current-sensitive residual current circuit breakers are required for use in alternating-current systems with 50/60 Hz,
in combination with electronic devices such as EC motors, frequency converters or uninterruptible power supplies
(UPS).
8.6

Protecting the motor

Note:
In fans equipped with an EC motor, there is no additional motor protection needed. The motor protection is
integrated in the electronics of the motor.
Important
Damage to motor due to overcurrent, overload or short circiut.
♦ Use (all-pole) circuit breaker (characteristic C or K) or motor protection switches.
♦ Always connect thermo-contacts or cold conductors to a motor protection switch.
9 Commissioning
9.1

Safety information

♦ Commissioning may only be carried out by adequately qualified persons, details see Table 1 Qualifications, page 6.
♦ Wear protective equipment during all work in the vicinity of the fan, details see 2.2 Personal protective equipment,
page 6.
9.2

Preconditions

♦ Installation and electrical connection have been correctly performed.
♦ Residual material from installation and foreign objects have been removed from the fan and ducts.
♦ Inlet and outlet are free.
♦ Safety devices have been fitted.
♦ Ground cable is connected.
♦ Cable glands are tight.
♦ Nominal current (from the name plate) is not exceeded.
♦ Data on the name plate corresponds with the connection data.
Speed specification values
0 V
2 V...4 V (min.)
Min....10 V
10 V
10 V
Comment
Fan standstill
Speed depending on set value
Linear rise in the characteristic curve
analogue to the CO concentration
starting with the minimum through to
the maximum fan speed
Maximum fan speed
Maximum fan speed
GB
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