Chapter 3: Configuration and Commissioning
ModuLaser Modular Aspirating Smoke Detector Installation Manual 77
Smoke pellet test
This test is typically used for Class C installations.
Performing a smoke pellet test
1. Place a 20 x 20 cm (7.87 x 7.87 in.) metal plate onto a 5.8 KW butane gas
burner (or equivalent electrical heater), and then place a 7-9 g smoke pellet
onto the plate.
2. Place a metal chimney over the pellet. The chimney should be 2 to 6 mm
(0.08 to 0.24 in.) thick, at least 100 mm (3.94 in.) in diameter and 150 mm
(5.9 in.) high.
Either the base of the chimney or the metal plate should have ventilation
holes.
3. Ignite the burner and start the timer when the pellet starts to produce smoke.
4. Extinguish the burner after the required time has elapsed.
The amount of time depends on the room height and the temperature
differential (the temperature difference between the level at which the test is
conducted and the level at which the aspirating sampling points are
mounted). See Table 31 below.
Table 31: Burn times for smoke pellet tests
Height
Temperature Differential
<3°C
(<37.4°F)
3 to 6°C
(37.4 to 42.8°F)
6 to 9°C
(42.8 to 48.2°F)
9 to 12°C
(48.2 to 53.6°F)
12 to 15°C
(53.6 to 59°F)
3 to 5 m
(9.8 to 16.4 ft.)
3s 6s 9s 12s 17s
5 to 10 m
(16.4 to 32.8 ft.)
7s 13s 20s 27s 34s
10 to 15 m
(32.8 to 49.2 ft.)
10s 20s 30s 40s 51s
15 to 20 m
(49.2 to 65.6 ft.)
13s 27s 40s 54s 67s
Connectivity check
Ensure that communications between the detector and any fire control and
indicating equipment (especially alarm and fault conditions) operate correctly.
Check any other cause and effect requirements, particularly in relation to
integration with automatic suppression systems.
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