Installation
Evaluating the Environment
2-3
Specification Value
Requirements for
Out-of-
Building
Installations
■ Installation of a telephone or other standard (tip/ring) device in another
building requires the following In-Range-Out-Of-Building (IROB)
protectors to protect the control unit and device from electrical surges:
— System phone: two IROB protectors
— Standard phone: two IROB protectors plus one carbon block
protector
■ Installation of a Contact Closure Adjunct controlled device outside the
building requires a 146G Surge Protector-SCL/8 to protect the control unit
from electrical surges
Wiring ■ System phones: SYSTIMAX
®
Bulk Nonplenum (DIW) cable, SYSTIMAX
Bulk Plenum (HALAR/HALAR) cable, or at least 2-pair (4-wire) star
(“home run” not “loop”)
■ Other standard telecommunications equipment (single-line phones, fax
machines, answering machines, etc.): 1-pair (2-wire) D2R mounting
cords recommended
■ Bridging adapter: 267F2
■ Range: 1,000 feet (305 meters) for system phones; 3,000 feet (915
meters) for standard devices
Safety
Requirements
■ U.S.: Meets UL 1459 Issue 2
— Class 2 power standards:
UL 1012 Standard for Safety – Power Supplies
UL 1310 Standard for Safety – Direct Plug-in Transformers
UL 1585 Standard for Safety – Class 2 and Class 3 Transformers
■ Canada: Meets CSA C22.2, No. 0.7-M1985
Table 2-1. Environmental Requirements—Continued
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