Specifications

IMl66-107
Chapter 3
Installation
Installation
Mounting Considerations
0 Screwdriver - to match fasteners
0 The common equipment cabinet should be attached
vertically to any sturdy, flat surface. It may be
vertically rack-mounted if desired.
0 Electric drill - if prepared holes are required
0 Connecting tool - for fastening wires to a type-66
connector block.
0 Because of the current listing requirements of UL
1459, the length of the AC line cord on the
equipment cabinet is a maximum length of 5 feet;
therefore, the cabinet must be located within four
feet of-a proper electrical outlet. The system
requires a dedicated 117VAC 15 AMP circuit, with a
third-wire ground, supplied to a standard electrical
outlet (NEMA 5-l 5R).
0 Crimping tool - for 623-type modular plugs
0 Volt/Ohm Meter
Installation Notice
0 The distance between the common equipment and
the TELCO/PBX jacks must be 25 feet or less as
per FCC requirements. A nominal distance of 7 feet
is recommended.
Per The Underwriters Laboratories standard 1459,2nd
edition, be aware of the following precautions when
installing telephone equipment that is to be directly
connected to the telephone company network:
0 Never install telephone wiring during a lightning
storm.
0 The mounting location must be secure and dry and
have adequate ventilation. The temperature range
of the location must be within 32-122 degrees F
(O-50 degrees C), and the relative humidity must be
less than 90 percent non-condensing.
0 Never install telephone jacks in wet locations unless
the jack is specifically designed for wet locations.
0 Never touch uninsulated telephone wires or
terminals unless the telephone line has been
disconnected at the network interface.
0 If the mounting surface is damp or if it is concrete or
l Use caution when installing or modifying telephone
masonry material, you must attach a backboard to
the mounting surface to be used for common
equipment mounting. Suitable mounting
backboards are available commercially or can be
constructed out of In-inch plywood cut to size.
lines.
Special Mounting Consideration
When battery back-up is part of the installation, the
external batteries and cable assembly (the Comdial
BBU02 battery back-up assembly), the common
equipment, and all wiring connections must be located
in a dedicated equipment room (as defined in the
National Electric Code published by The National Fire
Protection Association, Quincy MA, 02269). However,
the Comdial model BBL02 anf BBL03 battery back-up
assemblies consist of a closed metal cabinet, a pair of
batteries, panel-mounted fuses, and a cable that
connects the battery back-up unit to the common
equipment. This cable is secured to the cabinet by a
strain-relief. These models are safe for installation in
general office environments and do not need to be
installed in a “dedicated equipment room.”
Tools And Hardware
0 Fasteners - wood screws (l/4 x l-inch round head),
toggle bolts, or -wall anchors
Simplified Hybrid Operation
In the past, the Federal Communications Commission
(FCC) required that telephone system manufacturers
provide a hardware strap that installers could move to
distinguish between hybrid system and key system
operation. Prior to the release of software revision
1 IA, the digital telephone system provided this strap
at either the Jl station connector or at a special
terminal strip (depending upon the system model).
The installer strapped two terminals together at either
the 66M-xx station connector block or at the special
terminal strip to select the hybrid mode. Recent
rulings by the FCC have eliminated the need for the
hardware strap. Beginning with software revision 7 lA,
whenever a programmer assigns lines to line groups
the digital telephone system automatically assumes
the hybrid mode and the system no longer includes a
hardware strap that the installer must move. The
hybrid system mode may incur a higher monthly tariff
to the telephone company; therefore, the FCC requires
that the installer report the equipment-type category
designation number (KF for key system, MF for hybrid
system) to the telephone company at the time of
installation.
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