D2412 Installation Manual
Page 6
8/11/97 P/N 35115B
© 1997 Radionics
Connect to Earth Ground
Terminal 3
To help prevent damage from electrostatic charges or
other transient electrical surges, connect the panel to
earth ground at the panel’s earth ground terminal (terminal
3) before making any other connections.
A grounding rod or cold water pipe are recommended
earth ground references.
Radionics does not recommend a telephone or electrical
ground for the earth ground connection. Use 18 AWG wire
maximum under the terminal. Use a spade lug or splice for
a larger wire.
Do not connect any other panel terminals to earth ground.
The panel’s common terminals and earth ground terminal
are electrically isolated.
Transformer
Terminals 1 and 2 (16.5VAC)
Connect the transformer to terminals 1 and 2 before
plugging it into the power source.
Use 18 AWG wire to connect the transformer to the panel.
Wire length should be kept as short as possible. Maximum
wire length is 50 feet.
Never share the transformer with other equipment:
Foreign grounds on the AC input may damage the panel’s
power circuit.
Battery
Place the battery upright in the base of the enclosure. First
plug the connector on the negative (black) battery wire to
the negative (-) side of the battery.
Next plug the connector on the positive (red) battery wire
to the positive (+) side of the battery.
Charge the Battery as You Work
Lock the Standby Switch
Locking the pin in the standby position allows you to
charge the battery as you install the detection devices and
keypads. Lock the pin down now. See Figure 2.
With the Standby Switch locked down, the panel deacti-
vates the external relay outputs, suppresses reports, and
disables all arming functions.
Lock the Standby Switch down to program the panel
locally, from the keypad, or the D5200.
Releasing the Standby Switch from the closed position
resets the panel. The panel resets all its timers and
counters, and clears all buffers. If the panel is armed,
releasing the standby switch causes the panel to disarm.
Figure 2: Standby Switch
Install Detection Devices,
Keypads, and Bells
No Connection to the Panel Yet
Install and wire detection devices, keypads, and indicating
devices (bells, sirens, or strobes for example) at their
locations throughout the premises. DO NOT make the
connections at the panel end of the wiring yet.
Number of Sensors
When using Point 1 as a fire point, the number of detec-
tion devices you can connect to its sensor loop is limited.
See Point 1 on page 8.
The number of detection devices you can connect to the
sensor loops for Points 2 to 6 is limited only by the
resistance on the loop. Resistance must be less than
100
Ω
with the detection devices connected.
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