Remote Test; Field Sensitivity Measurements - Bosch D296 Installation Instructions Manual

Long-range Beam Smoke Detectors
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8.5

Remote test

Notice!
A D307 is required for the remote alarm test.
Notice!
Clean covers are necessary for proper reference voltage readings. For cleaning procedures,
see Cleaning, page 24. For aiming procedures, see Preliminary alignment, page 18 and Fine-
Tune alignment, page 20.
With a D307 connected to the receiver, use the following procedure to perform a remote test.
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Notice!
You can also use the voltage monitor to check the sensitivity level of the detector. As the
signal level decreases because of dust or dirt buildup on the lenses or system misalignment,
the voltage reading also decreases.
8.6

Field sensitivity measurements

Notice!
Testing these detectors activates a fire alarm. Inform all concerned personnel before
performing a test.
The detectors automatically compensate for the effects of dust and dirt accumulation on their
covers. They also compensate for component aging.
Notice!
NFPA 72 requires the detector sensitivity be measured in the field within one year after its
initial installation and every alternate year thereafter.
Use the Sensitivity Test Kit supplied with the detector to check detector sensitivity only during
installation. For field testing, order and use a D308 Test Kit.
Each filter decreases the detector's signal by a specific amount. When you place a filter in
front of the receiver's optical module for a minimum of 30 sec (5 sec for position 0 or 1), you
can determine the approximate sensitivity setting of the installed detector by its response as
shown in the following table.
Bosch Security Systems, Inc.
If the cover is off, reattach it and press the setup button.
Insert the operating key and turn the switch to the TEST position for a minimum of 5 sec.
The red LED lights steadily and the system sounds an alarm.
Turn the switch to RESET for a minimum of 1 sec.
The red LED turns off and the green LED lights steadily for approximately 60 sec to
120 sec.
The receiver proceeds with its Setup Mode. When the setup is completed, the green LED
begins flashing.
Connect a standard volt-ohm meter (VOM) to the voltage monitor plugs. The voltage
reading must range between 3.8 VDC and 4.2 VDC when clean and properly aimed.
Installation Instructions
Notices | en 25
2014.01 | 06 | F.01U.068.899