D2112/D2112E Installation Manual
Page 6
74-07111-000-D 196
© 1995 Radionics
Connect Earth Ground
Terminal 3
To help prevent damage from electrostatic charges
or other transient electrical surges, connect the
panel to earth ground at 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 lug or splice for larger wire.
Do not connect any other panel terminals to earth
ground. The panels common terminals and terminal
3, earth ground, are electrically isolated.
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
deactivates 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.
Transformer
Terminals 1 and 2
Connect the transformer to terminals 1 and 2 on the
panel 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 length is 50 feet.
Never share the transformer with other
equipment: Foreign grounds on the AC input
damage the panel's power circuit.
Battery
Terminals 4 and 5
Place the battery upright in the base of the
enclosure. First connect the bare end of the black
battery lead to terminal 5 on the panel. Then plug
the other end to the negative (-) side of the battery.
Next connect the bare end of the red battery lead to
terminal 4 on the panel. Then plug the other end to
the positive (+) side of the battery.
D126 Battery required for fire and combined fire/
burglary systems: In order to meet standby battery
requirements, use the Radionics D126, 12 V 7.0Ah
battery for fire and combined fire/burglary systems.
15
11
12
16
17
20
21
22
23
24
25
26
27
28
29
19
18
1
6
7
8
9
10
3
5
4
2
14
13
Standby Switch
Normal (Open)
Standby Switch
Locked (Closed)
Figure 2: Standby Switch
