Bosch PRAESENSA, Руководство пользователя

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PRAESENSA Installation wiring | en 19
Bosch Security Systems B.V.
Underwriters Laboratories Listing Document (ULLD)
2021.12.21 | V0.15b | F.01U.402.882
– Ventilation inlets should be kept free of obstacles and dust. Fans are controlling the
airflow based on internal temperature. Airflow is from the front to the rear and sides.
The PRAESENSA 19”-devices are equipped with (removable) mounting brackets for mounting
in a 19”‑rack. Use four caged nuts, nylon cup washers and pan head bolts for mounting.
!
Caution!
The rack must be grounded to a safety ground. All PRAESENSA 19”-devices have a chassis
ground screw on the rear panel, which must be used for a wire connection to the rack frame.
Use a thick, multi‑strand wire (>2.5 mm
2
) with wire eyelets and washers for a solid
connection.
3.1.4 Field wire cable requirements
Prior to installation
Confirm the following:
–
The cable selected is proper for the application, taking into account all applicable local,
state, provincial, and national codes.
– The cable has not been damaged in transit or storage.
During cable installation
The following factors must be considered:
–
Do not exceed the fill capacity of raceways and cable trays.
– Use grommets to protect cables when passing through metal studs or anything that can
possibly cause damage.
– Obey bending rules of cables and maximum pull force.
– Be sure to firestop all cables that penetrate a firewall.
– Use plenum rated cable where it is mandated.
– Use fire resistant cable when it is mandated.
Separation of circuits
– Separate Class 1 wiring from other class wiring. A minimum distance of 6.4 mm between
Class 1 and other classes must be obtained for the field installed wiring.
– Wiring routing inside a 19" Lowell rack:
–
Left hand side type of wiring : Mains, 12 V+ NTC, 48 V, Lifeline, 70/100 V.
– Right hand side type of wiring: Ethernet, 24 V, I/O contact.