Fire Protective Signaling - Crown Com-Tech CT-1600 Reference Manual

Com-Tech 200/400/800/1600 Power Amplifiers

9 Fire Protective Signaling

Some installations are required to have an emergency
public address system. For these systems, UL pro-
vides a special listing called Amplifiers for Fire Protec-
tive Signaling Systems. All Com-Tech amplifiers are
UL-listed for this type of system.
Due to the strenuous nature of the classification, sev-
eral requirements must be considered for proper in-
stallation:
1. The amplifier must be installed in a 19 inch rack
mount enclosure that is UL-listed for use in Fire Pro-
tective Signaling Systems.
2. The amplifier must be installed in the same room as
the Fire Alarm Control Unit.
3. The amplifier must be installed in accordance with
the National Electric Code (NFPA 70), the National
Fire Alarm Code (NFPA 72) and the local authority
having jurisdiction.
4. The Com-Tech 200 must have a P.I.P.-BB , a
P.I.P.-UL1711 or a P.I.P.-ISO installed (see Sec-
tion 8.1). All other Com-Tech amplifiers must have a
P.I.P.-UL1711 installed for supervision by a
UL-listed Fire Alarm Control Unit.
5. The amplifier must be configured for 70 volt Dual
mode operation.
6. The power requirement of the connected loud-
speakers should not exceed the amplifier's power
rating for Fire Protective Signaling Systems (refer to
the specification that follows).
When using a Com-Tech 200 in a Fire Protective Sig-
naling Application, UL does not require the installation
of a P.I.P.-UL1711 as they do for the other Com-Tech
amplifiers. Even so, the P.I.P.-UL1711 might still be a
desirable addition with its amplifier monitoring and re-
mote on/off capabilities. With a Com-Tech 200 , if a
P.I.P.-UL1711 is not installed, either the included
P.I.P.-BB or a P.I.P.-ISO must be installed. No matter
which P.I.P. is installed, the input wiring must be super-
vised by the Fire Alarm Control Unit. Please refer to
Section 3.3.2 for P.I.P.-BB wiring instructions. For
P.I.P.-UL1711 and P.I.P.-ISO installation, please refer to
the wiring instructions provided in each P.I.P. manual.
For Fire Protective Signaling Applications, UL requires
an amplifier's output power ratings to be valid for emer-
gency operating conditions. This is why Com-Tech
amplifiers have special 70 volt Dual mode power
specifications for Fire Protective Signaling Applica-
tions. The Com-Tech 200 is rated for 50 watts per
channel, the Com-Tech 400 is rated for 122 watts per
channel, the Com-Tech 800 is rated for 222 watts per
channel, and the Com-Tech 1600 is rated for 350 watts
per channel. All models have a power bandwidth for
this specification of 800 to 2,800 Hz. Crown guaran-
tees these specification in accordance with the el-
evated operating temperature and strenuous condi-
tions associated with emergency operation.
Current draw from the AC mains is also rated specifi-
cally for Fire Protective Signaling Applications. The
Com-Tech 200 has a rating of 3.0 amps, the Com-Tech
400 has a rating of 6.0 amps, the Com-Tech 800 has a
rating of 9.0 amps, and the Com-Tech 1600 has a rat-
ing of 18.0 amps.
UL installation guidelines do not allow an amplifier to
exceed its power rating for Fire Protective Signaling
Applications. Com-Tech amplifiers can deliver much
more power than this special rating suggests, so you
must ensure that the total of the wattage ratings for the
connected loudspeakers does not exceed the
amplifier's required power rating for UL listing.
The specifications provided in this section supersede
those given in Section 6 only for Fire Protective Signal-
ing Applications. For more information on using Com-
Tech amplifiers in Fire Protective Signaling Applica-
tions, please refer to the P.I.P.-UL1711 Owner's Manual
or contact Crown's Technical Support Group.
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