RANGEMENT
PLACARD CLOSET
inaccessible
ambient
The temperature rating
of the detector shall be at least 20°F (11°C) above the
maximum expected temperature at the ceiling.
Ceiling Slopes of 30 Degrees or Greater. All detectors,
other than those located in the peak, shall be spaced
using the average slope height or the height of the peak.
17.6.3.5.1* On ceilings 10 ft to 30 ft (3.0mto 9.1 m) high, heat
detector spacing shall be reduced in accordance with Table
17.6.3.5.1 prior to any additional reductions for beams, joists,
or slope, where applicable.
Exception: Table 17.6.3.5.1 shall not apply to the following detectors,
which rely on the integration effect:
(1) Line-type electrical conductivity detectors (see 3.3.59.10)
(2) Pneumatic rate-of-rise tubing heat detectors (see 3.3.59.14)
In these cases, the manufacturer’s published instructions shall be followed
for appropriate alarm point and spacing.