7-1November 2002 06-235975-001
Kidde Gemini II System
CHAPTER 7
INSTALLATION AND CONFIGURATION
7-1 INTRODUCTION
This chapter explains the procedures to install the Kidde
Gemini II System, and includes the following:
• Environmental and electrical requirements
• Mounting the enclosure
• Wiring and powering up the units
• Configuring the units from the Main Control Panel.
Only trained and qualified personnel should install and con-
figure the Kidde Gemini II. They must be totally familiar
and experienced with wiring diagrams and components,
experienced in electrical installation, familiar with the NEC
and with local codes and trained or qualified by Kidde-Fen-
wal, Inc.
7-2 REQUIREMENTS
7-2.1 Environmental and Electrical Requirements
• Temperature: The unit must not be exposed to ambi-
ent temperatures below 32°F (0°C) or above 120°F
(49°C).
• Humidity: Relative humidity should not exceed 93% @
100°F (36.5°C).
• Power Supply: 120 or 240 Vac 50/60 Hz.
7-2.2 Materials Required
The materials listed below are not supplied with the sys-
tem, but are required for installation.
• No. 10 or 3/16 inch mounting hardware
• Electrical conduit for AC input power
• 4-inch electrical junction boxes (as required)
• Wire-nuts and crimp-on terminals (as required)
• Ground strap (for use when handling printed circuit
boards)
7-3 INSTALLATION PROCEDURES
7-3.1 General Installation Information
7-3.1.1 ELECTRICAL CONNECTIONS
The Kidde Gemini II incorporates state of the art technol-
ogy. Take special care when installing the system to follow
the guidelines given in the following paragraphs.
Install electrical conduit and wiring in accordance with ap-
plicable National Electrical Code, NFPA Standard and state
and local building code requirements.
The incoming AC voltage must be stable and within the
permissible voltage range. This is especially important in
new construction where incoming power may be high or
unstable, and temporary connections may cause large in-
ductive voltage spikes.
Most supervised circuits use voltage or current sensing cir-
cuits that are sensitive to induced voltages on the sensor
wiring.
Do not under any circumstances run AC power,
speaker, PA, intercom or switch control wiring
with inductive loads in the same conduit or in
the immediate vicinity of sensor wiring. Panel
damage or malfunction may result.
7-3.1.2 GROUNDING
Special attention should be directed to proper grounding
practices. The power supply/battery charger and AC input
must use an isolated ground circuit, not conduit ground.
The system should never be connected to a
conduit or green wire circuit that is also used
to power resistance heating, motors, fans, air-
conditioning equipment or fluorescent lighting
circuits. Leakage currents from these types of
circuits into the ground return could damage
sensitive system components.
A separate earth ground or cold water pipe with
properly bypassed water meter should be used.
All external devices such as horns or alarm
bells should have their housings grounded. All
low-level signal cables should have foil
shielding and a drain wire to be installed in their
own grounded metallic conduit.
Ground only one end of the drain wire or shield,
since a ground on both ends will provide a
current path and thus subject the circuit to
induced RF currents and noise. A minimum
alternative would be to use shielded #16 AWG
twisted pair wire.
Adequate lightning protection must be provided
for the incoming power at the building entry.
Arrestor circuitry and earth grounding should
be in accordance with article 250 of the National
Electric Code.
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