Lencore n.FORM Operation Manual page 5

- Use a listed Rack with the following minimum ventilation openings:
Fully perforated Front and Back door that has a minimum 90% of the surface area provided with
perforated openings.
Top Enclosure of the rack shall be provided with a ventilation openings that cover a minimum
surface are equal to 40% of the overall top enclosure surface area.
The side enclosures of the rack shall be provided with minimum ventilation openings located at
the upper 1/3 and lower 1/3 of each of the side enclosure, each set of ventilation openings shall
cover a minimum surface area equal to 8% of the overall side enclosure surface area.
- Use UL2572 listed NAC Extenders driven by a N.O. dry contact and includes a N.O. dry contact
fault output.
- The UPS should be located in the same room as the equipment it is powering. The UPS must be
hardwired to the branch circuit and hardwired to the Rack Unit and any other Device if powered by
the UPS. The connection between the UPS and Rack Unit and any other Device shall in conduit and
not exceed 20 ft. (6.1 m), or equivalently protected against mechanical damage.
- For Canadian Installations the NAC Extender provide 2 hours of alarm condition. If 2 hours
loading exceeds the NAC Extended Battery capacity, the unit needs to be powered by the UPS.