FBII Omni-408A, Installation And Setup Gude, Page: 10 / 96

OMNI-408A Installation and Setup Guide
2–2
Terminal Connections
TERMINALS FUNCTION DESCRIPTION
1 & 2 Transformer Connect the 16.5VAC 25VA transformer, utilizing #18awg
wire at a distance not to exceed 15 feet from the panel, to an
unswitched 120VAC outlet.
Do not use any other transformer, as this may result in
improper operation or damage to the unit.
The AC/LB keypad LED will remain on while AC power is
present. If an AC loss occurs, the AC/LB LED turns off
immediately. If AC power remains off for 15 minutes, the
system pulses the keypad buzzer (if enabled in Programming
question 07, location 4, bit 2) and transmits a power-loss
message to the central station, if programmed to do so. THE
KEYPAD BUZZER CAN BE SILENCED by entry of any valid
user code. When AC restores, the AC/LB LED lights
immediately, and a Restore code is reported, if programmed.
3 Earth
Ground Connect this grounding lug to a cold-water pipe utilizing
#18awg wire at a distance of no greater than 15 ft. Use a
non-corrosive metal strap firmly secured to the pipe to which
the lead is electrically connected and secured. If the
premises' pipes terminate in PVC, this terminal must be
connected to a 6-foot grounding rod.
4(+) & 5(-) Bell Output The total output power available for sounding devices is 1A at
11.5 - 13.1VDC. These terminals deliver CONSTANT output
on BURGLARY, AUDIBLE PANIC, and BELL TEST. On a
FIRE condition, a PULSED or TEMPORAL output can be
generated. There are separate bell cutoff times
programmable for burglary and fire conditions within the
programming sequence. For UL Household Fire Warning
System installations, the speaker must be mounted indoors
for best audibility. Also, for UL installations, use only one
speaker.
NOTE: Before connecting sounding devices, consult their
specifications for proper current draw. Otherwise, the bell
fuse (F1) may be blown.
6 Siren
Supervision
Input The bell output may be supervised when a conventional bell
or a self-contained siren is connected. When connecting a
conventional bell or a self-contained siren to the bell output
terminals (4 and 5), the jumper JP3 must be placed across
pins 1 and 2. When connecting an external siren driver to the
bell output terminals, the supervision wire is connected to the
siren supervision terminal of the siren driver, and the jumper
JP3 must be placed across pins 3 and 4. A supervisory
condition generates a pulsing keypad sounder. Also, the
supervisory LED on the keypad pulses. Entering a valid user
code while the system is disarmed silences the sounder. The
LED continues to pulse until the supervision is fixed. If a bell,
self-contained siren, or external siren driver is not connected
to the bell output terminals, a 100-ohm resistor must be
placed across the siren supervision input to prevent a bell
supervision error. Bell supervision is reported to the CS if
enabled.