Test Mode; Sensitivity Mode - Bosch F220 Series Installation Manual

F220 Series Detectors with F220-B6/C/E/R Bases
4.2 Set Detector Modes
The F220 Series Smoke Detectors feature a unique
magnet-operated sensitivity mode and detector test mode.
4.2.1

Test 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.
4.2.2

Sensitivity 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.
2.
3.
Number of
Red Flashes
1
3
4 to 6
7 to 10
11
12
13
14
15
Table 4.1 Red LED Flash Definition
4.
Bosch Security Systems, Inc.
Place the detector into Sensitivity Mode.
Wait for the first single green LED flash.
Count the number of red LED flashes that follow and refer
to Table 4.1 for sensitivity definitions.
Sensitivity Definition (% Obscuration)
Malfunctioning smoke or heat detector
Normally operating smoke or heat detector with
little or no dirt contamination
Progressively more contamination
Trouble condition, very dirty but still
compensated to 3%/ft (3%/ft = 0.433 db/m);
Sensitivity < 3%/ft at 10 flashes.
Sensitivity < 2.5%/ft (2.5%/ft = 0.36 db/m)
Sensitivity < 2.0%/ft (2.0%/ft = 0.287 db/m),
chance of false alarm increases
Sensitivity < 1.5%/ft (1.5%/ft = 0.214 db/m)
Sensitivity < 1.0%/ft (1.0%/ft = 0.143 db/m),
chance of false alarm greatly increases
Sensitivity < 0.5%/ft (0.5%/ft = 0.071 db/m),
false alarm likely
The detector exits sensitivity mode and returns to one
green LED flash every eight seconds.
Installation Manual
Install the Detector Heads | en 21
4998138694 -04 | 2007.01