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If the unit is not installed and operated as specified, the protection provided by
the unit may be impaired.
Before start-up, it is important to ensure that:
1. The unit can be switched off by a switch, or a circuit breaker, clearly
marked as the disconnecting device for the unit. The minimum
rating of the disconnecting device is:
5 Amps for 120 Vac or 230 Vac power
10 Amps for 24 or 48 Vdc power
2. The disconnecting device is located in close proximity to the unit and
must be marked as the disconnecting device for the unit.
3. The protective earth terminal is properly connected to protective earth.
4. The line has been connected correctly and protection is provided against
electric shock.
5. Proper ventilation is provided by at least 6 inches (15.25 cm) above and
below the unit
2
Series 90B ANNUNCIATOR INSTALLATION AND CONFIGURATION MANUAL
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