GLT-299-7-2(3) Rev.0
Mar 23, 2018
8
When installed on the ceiling, spot type heat detectors must be located a minimum of 10 cm (4 in.) from side walls.
When installed on side walls, the detector must be between 10 cm (4 in.) and 30 cm (12 in.) from the ceiling, as
shown in Figure 5.
10cm
(4in.)
Acceptable here
10cm
(4in.)
minimum
30cm
(12in.)
maximum
Never here
Top of detector
acceptable here
Ceiling
Sidewall
Note : Measurements shown are to
the closest edge of the detector.
Figure 5: Detector placement near ceiling or wall joints
The following figure shows the required heat detector spacing for a 60.9 m (200 ft.) by 60.9 m (200 ft.) room with a 3m
(10 ft.) ceiling. Figure 6 shows 16 heat detectors with the required spacing of S = 15.3 m (50 ft.).
10
.7 m
(35
ft.)
15.2 m
(50 ft.)
15.2 m
(50 ft.)
15.2 m
(50 ft.)
1
5.
2
m
(5
0
f
t.
)
1
5.
2
m
(5
0
f
t.
)
1
5.
2
m
(5
0
f
t.
)
7.6 m
(25 ft.)
7.6 m
(25 ft.)
7.6 m
(25 ft.)
7
.6
m
(2
5
f
t.
)
6
0.
9
m
(
2
0
0
f
t.
)
60.9 m (200 ft.)
Figure 6
:
Heat detectors spacing example
