Instruction manual

ENVIRONMENTAL REQUIREMENTS

General

This section provides information about the floor and wall space required for system and associ-

ated peripheral equipment installed in the equipment room. Specifications for temperature, humi-

dity, air purity, and lighting levels are also included.

Floor Plans and Layouts

Floor plan arrangements will vary depending on the size and shape of the equipment room and

the amount of growth planned for the system. Typical floor plans are shown in Figures 10, 11,

12, and 13. DEFINITY Generic 1 and DEFINITY Generic 3 can have either one system cabinet

(PPN) or two system cabinets (PPN and EPN) plus an auxiliary cabinet in some cases.

The wall behind the system cabinet must be clear of all objects (pictures, shelves, or windows)

that are not required in the system installation. The entire area behind the cabinet must be

reserved for the cross-connect field and the cable access panel (when provided). Also, room for

system growth should be considered.

Floor Loading

The type of system cabinet determines the floor loading requirement.

With Multi-Carrier Cabinet(s)

The floor must have a commercial floor loading code of at least 50 pounds per square foot. A

fully loaded multi-carrier cabinet weighs about 800 pounds. Thus, a free maintenance area of at

least 16 square feet is required for each cabinet.

With Single-Carrier Cabinet(s)

One single-carrier cabinet weighs about 130 pounds, a fully loaded two-cabinet system weighs

about 255 pounds, a fully loaded three-cabinet system weighs about 380 pounds, and a four-

cabinet system weighs about 500 pounds. Since the floor must have a commercial floor loading

code of at least 50 pounds per square foot, a free maintenance area of at least 10 square feet is

required for a four-cabinet system.

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