Bosch D296 Series, Installation Manual

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14 en | Mounting Long-range beam smoke detectors
2017.03 | 7.0 | F.01U.068.899 Installation manual Bosch Security Systems, Inc.
5. Mount the back plate to the electrical box.
6. Attach the circuit carrier plate to the back plate using a single mounting screw.
7. Repeat Steps 1 through 6 to mount the transmitter.
Notice!
The D344‑RL and D344‑RT connect only to the receiver.
4.1 Sensitivity setting
To set sensitivity, use the following procedure:
1.
Select the appropriate sensitivity setting based on the distance between the transmitter
and receiver. For a list of distances including some settings that overlap, see the
following table. Select a lower setting for a more sensitive detection or select a higher
setting for better immunity to false alarms.
Switch Setting Sensitivity Alarm Response Beam Length
0 30% 5 sec 30 ft to 100 ft (9 m to 31 m)
1 60% 5 sec 100 ft to 350 ft (31 m to 107 m)
2 20% 30 sec 30 ft to 50 ft (9 m to 15 m)
3 30% 30 sec 45 ft to 75 ft (14 m to 23 m)
4 40% 30 sec 70 ft to 100 ft (21 m to 31 m)
5 50% 30 sec 90 ft to 140 ft (27 m to 43 m)
6 60% 30 sec 120 ft to 180 ft (37 m to 55 m)
7 70% 30 sec 160 ft to 350 ft (49 m to 107 m)
8* Not used
9* Not used
* Do not use positions 8 and 9. They are not valid.
2. Set the receiver’s sensitivity switch to your selected setting. The sensitivity switch is
located to the right of the optical module. The indicator, or pointer marking, runs along
the side of the switches' shaft as indicated in the following figure.
Figure 4.3: Sensitivity Switch