Page 4 P/N: 22066P © 2004 Bosch DS240/DS241 Installation Instructions
6.0 WIRING
Only apply power after all connections have been made
and inspected.
• Wire the transmitter and receiver terminals as follows (see
Figure 6
).
NOTE: Do not install on verified fire circuits.
Figure 6 - Wiring a Single Unit
NOTE: Do not coil excess wiring inside the units.
• Transmitter Terminals 1 & 2:
Input power terminals. See
Section 2.0 Specifications
on page 1
for the operating voltages of the DS240 and DS241.
• Receiver Terminals 1, 2 & 3:
Form "C" Auxiliary relay contacts. Terminals 1 & 2 will open on fire
alarm; Terminals 2 & 3 will close (short) on fire alarm.
• Receiver Terminals 4 & 5:
Normally Open Fire alarm contacts will close (short) on fire
alarm.
• Receiver Terminals 6 & 7:
Normally Closed Trouble contacts will open for trouble alarm.
• Receiver Terminals 8 & 9:
Input power terminals. See
Section 2.0 Specifications
on page 1
for the operating voltages of the DS240 and DS241.
NOTE: Resetting from a fire alarm requires power to the receiver to
be interrupted for at least one second. If not provided by the
fire panel, it can be accomplished by installing a switch in
series with Terminal 9.
Remote Indicator Plate
The DIS2000 Remote Indicator Plate is shipped with the DS240/
DS241 as a standard accessory. Although the Remote Indicator Plate
is not required, the manufacturer recommends its installation to
provide a means of checking the condition of the detector from ground
level.
If a DIS2000 or DIS240 Remote Indicator Plate will be used, install
the Remote Indicator Connector to the receiver now (see Figure 7).
NOTE: The DIS240 remote indicator should be located no further
than 100 ft (31 m) from the receiver and wired with 18 AWG
(1.2 mm) or larger wire. The DIS2000 may be wired up to
500 ft (152 m) from the receiver.
• Slide the Remote Indicator Connector over the pins just to the
right of the receiver’s terminal strip.
Figure 7 - Connecting the DIS2000 Remote Indicator Plate
NOTE: If connecting a DIS240 Remote Test/Indicator Plate,
consult the
DIS240 Installation Instructions
(P/N: 24171).
7.0 SET-UP
Before starting this section, confirm that all connections have been
made and are secure, then apply power to both units.
• Press the Aim Mode button (directly above the green LED) on the
transmitter (see
Figure 8
). This allows the transmitter to power
up while its cover is off.
AIM MODE
BUTTON
GREEN
LED
Figure 8 - Cutout View of Transmitter Circuit Board Showing
Aim Mode Button Location
- Check the transmitter’s green LED. It should be flashing on
and off.
CAUTION
Alarm Loop
Power Loop +
Power Loop –
Fire Alarm
Control Panel
DS240/DS241 Receiver
98
7654
Fire
Alarm
Trouble
Alarm
–+
10 to 32
VDC
EOL
Voltage Monitor
Ground (–)
Red LED
Green LED
Yellow LED
DIS2000
Violet
Black
Red
Yell ow
Green
Remote Indicator
Plate Connector
1234567
AUX.
RELAY
ALARM
FIRE
ALARM
TRBL
ALARM
89
–+
VDC
Receiver
12
–
+
Transmitter
End of Line
resistor
Alarm Loop
Power Loop –
Power Loop +
Fire Alarm
Control Panel
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