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D603/D604/D605
Testing the Installation
3.0
Mounting the Detector
Use the following steps to mount the detector base and head:
1)
Mount and wire the base according to its installation instructions.
2)
Mount the detector head to the base by turning it clockwise until it clicks into place. When it is secure, the
alignment arrow will be lined up with the tamper screw hole. See Figure 1.
Tamper Screw
Location
Test
Point
LED
3)
Use the tamper screw to prohibit detector head removal.
The detector heads are keyed and should not be forced onto the bases.
4.0
Testing the Installation
Use the following guidelines when testing the installed detector head/base combination:
• Check the wiring from the FACP to the last detector head on each run for proper polarity and continuity.
- Make sure each run terminates with an EOL resistor as specified by the FACP manufacturer.
- Make sure 4-wire runs terminate with EOL modules or D293E bases.
• Apply power to the system. Check for alarms.
- Note which detectors are in alarm (if any) and then shut the system down. Remove these detectors from their
bases and re-check the bases for proper wiring. If the problems persist, replace the affected detectors or swap
them with known good units. This will identify if the problem is caused by the detector or the base.
- In the event of a system alarm with no detector alarms present, remove all detectors and check the wiring at
each base. Pay close attention to the wiring of each EOL resistor or EOL module.
• When the system is free of alarms, check each detector to ensure that the red LED indicator is flashing
approximately every seven seconds. This verifies that the detector is receiving power and operating properly.
If the detector LED is flashing quickly (approximately once every second), the detector is either too cold or defective.
Allow it to warm slowly to room temperature. The LED should resume its normal flash pattern of approximately once
every 7 seconds. If it continues to flash quickly once the detector has reached average room temperature, the detector
is defective and must be replaced.
Page 2
contacts here and
rotate clockwise
Thermistor
Figure 1: Mounting the Detector Head to the Base
© 2008 Bosch Security Systems, Inc.
Alignment
arrow
Start detector
Base contacts
(3 sets)
R2
+1
3-
D603/D604/D605 Installation Instructions
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