PART 3
EXECUTION
3.1
INSTALLATION
Installation shall be in accordance with the requirements of NFPA 70 and
NFPA 72. Wire for 120 V circuits shall be No. 12 AWG minimum. Wire for
low voltage DC circuits shall be No. 14 AWG minimum. Color code wiring.
Wiring shall be in rigid steel conduit, intermediate metal conduit, or
electrical metallic tubing. Circuit conductors shall be identified within
each enclosure where a tap, splice, or termination is made. Conductor
identification shall be by plastic coated, self-sticking printed markers or
by heat-shrink type sleeves. The markers shall be attached in a manner
that will permit accidental detachment. Control circuit terminations shall
be properly identified. Unless indicated otherwise, wiring and conduit
shall be new. Do not run fire alarm circuits in the same conduit as
non-fire alarm circuits. Do not run AC circuits in the same conduit with
DC circuits.
3.1.1
Continuity of Protection
During the installation of this system, there shall be no loss of function
of the existing base fire alarm system, or of the local building alarm
systems connected thereto. Transfer of local alarm system connections from
the existing base alarm system shall not result in loss of alarm
transmitting or receiving capability. Temporary interruption of individual
building alarm connections, not to exceed 8 hours duration, will be
permitted at the discretion of the Contracting Officer. No interruption of
alarm or communications functions at the fire alarm watch office will be
permitted.
3.2
FIELD QUALITY CONTROL
3.2.1
Preliminary Testing
Conduct the following tests during installation of wiring and system
components. Correct any deficiency pertaining to these requirements prior
to final functional and operational tests of the system.
a.
Ground resistance: The resistance of each connection to ground
shall be measured and shall not exceed 10 ohms.
b.
Each cable shall be checked at the transmitter or receiver
connection for continuity, shorts, and grounds on the conductor
and on the shield prior to connection to equipment. Assemblies
failing these tests shall not be connected to equipment.
c.
Operation of each digital alarm communicator transmitter function.
d.
Operation of each interface device (where interface panels are
provided).
e.
Operation of each local alarm system zone.
f.
Operation of each initiating device circuit if connected directly
to the digital alarm communicator transmitter.
g.
Operation of supervisory features.
h.
Operation of all features of each digital alarm communicator
SECTION 13854N
Page 18
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