Bose FreeSpace 32 Manuale dell'installatore - Pagina 20
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Appendix C: Safety Requirements
C.1 Safety agency listings
®
FreeSpace
Model 8 and Model 32 (70V, 100V and 4 versions)
All models are UL 1480 listed:
• Vandal resistant (with grilles in place);
• General use - UL Category UEAY, Control number 3N89, File number S5591;
• Air handling spaces (ceiling plenums) - NFPA 70 NEC 1993 Article 300-22
(C) and UL 2043; NFPA 90A-1993 Installation of air conditioning and
ventilation systems, section 2-3.10.1 (a) exception 3.
FreeSpace Model 8 and Model 32 (70V fire safety models)
In addition to the above listings, fire safety models are UL listed for fire protective
signaling.
• Fire protective signaling use - UL Category UUMW, Control number 42S9,
File number S 3241).
C.2 Fire protective signaling
®
Bose
offers 70V fire safety models of both FreeSpace Model 8 and Model 32
loudspeakers listed with UL as fire protective signaling devices. These loudspeak-
ers are available only by special order.
Signal processing equipment
®
The Bose FreeSpace
use with FreeSpace Model 8 and Model 32 loudspeakers in fire protective signaling
and warning systems. The FreeSpace system controller installer's guide describes
the proper set up of fire protective signaling and warning systems using FreeSpace
Model 8 or Model 32 loudspeakers.
Wire preparation
Although the loudspeaker terminals will accept either stripped wires or crimp-on
forked connectors, using forked connectors as shown in Figure 18b for multiple
wires is not acceptable in fire protective signaling and warning systems due to the
lack of electrical supervision capability. Electrical supervision capability is main-
tained by connecting each wire individually to the terminals.
Sound Pressure Level (SPL) specifications
Loudspeaker sound pressure level is measured per UL-1480/ANSI-S1.12/ANSI-
S1.2 in the specified reverberant chamber. These SPLs will differ from the specifi-
cation given in the tables contained in Appendix A and Appendix B.
FreeSpace Model 8 Fire safety model
Wattage tap
1 Watt
dB at 10 feet
75dBA
FreeSpace Model 32 Fire safety model
Wattage tap
1 Watt
dB at 10 feet
81dBA
20
(Model 8/32) system controller is the only equalizer listed for
2 Watt
4 Watt
78dBA
81dBA
2 Watt
4 Watt
84dBA
87dBA
AM177915_03_V.pdf • May 6, 2002
8 Watt
84dBA
8 Watt
16 Watt
32 Watt
*90dBA
*90dBA
93dBA
* UL requires a step of
3dB (with a +/- .2dB
variable) with each
doubling of input power.
Because our trans-
former gives slightly
less than the required
3dB step between 8
watts and 16 watts, we
must show the last dB
rating. In this case,
there are two 90dB
ratings. For these
values, the actual UL
measured level for the
8W tap is 89.9dBA, for
the 16W tap is
92.5dBA, and for the
32W tap is 94.6dBA.