F220 Series Detectors with | Install the Detector Heads en 21 |
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4.2Set Detector Modes
The F220 Series Smoke Detectors feature a unique
4.2.1Test Mode
Test the detector by placing the magnet next to the T mark on the mounting skirt (refer to Figure 4.2, Item 8 on page 19) for three consecutive flashes to cause an alarm.
4.2.2Sensitivity Mode
If the magnet is next to the T mark for less than three flashes but more than one flash, the detector enters Sensitivity Mode.
1.Place the detector into Sensitivity Mode.
2.Wait for the first single green LED flash.
3.Count the number of red LED flashes that follow and refer to Table 4.1 for sensitivity definitions.
Number of | Sensitivity Definition (% Obscuration) |
Red Flashes |
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1 | Malfunctioning smoke or heat detector |
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3 | Normally operating smoke or heat detector with |
| little or no dirt contamination |
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4 to 6 | Progressively more contamination |
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7 to 10 | Trouble condition, very dirty but still |
| compensated to 3%/ft (3%/ft = 0.433 db/m); |
| Sensitivity < 3%/ft at 10 flashes. |
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11 | Sensitivity < 2.5%/ft (2.5%/ft = 0.36 db/m) |
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12 | Sensitivity < 2.0%/ft (2.0%/ft = 0.287 db/m), |
| chance of false alarm increases |
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13 | Sensitivity < 1.5%/ft (1.5%/ft = 0.214 db/m) |
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14 | Sensitivity < 1.0%/ft (1.0%/ft = 0.143 db/m), |
| chance of false alarm greatly increases |
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15 | Sensitivity < 0.5%/ft (0.5%/ft = 0.071 db/m), |
| false alarm likely |
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Table 4.1 Red LED Flash Definition
4.The detector exits sensitivity mode and returns to one green LED flash every eight seconds.
Bosch Security Systems, Inc. | Installation Manual | 4998138694 |
