The facility Fire Dept. or Engineering office should
be contacted to determine the type and amount of
data to be supervised (monitored), i.e. -type:
separate or common transmission of alarm,
supervisory, and trouble type signals; -amount: all
points, all zones, or the combined premises. Verify
that existing monitoring equipment has sufficient
capacity to support the additional premises or that
it can be expanded as necessary to accommodate the
new fire alarm system. Identify existing components.
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2.9.1
Radio Alarm Transmitters
Transmitters shall be compatible with proprietary supervising station
receiving equipment. Each radio alarm transmitter shall be the
manufacturer's recognized commercial product, completely assembled, wired,
factory tested, and delivered ready for installation and operation.
Transmitters shall be provided in accordance with applicable portions of
NFPA 72, NFPA 1221, and 47 CFR 15. Transmitter electronics module shall be
contained within the physical housing as an integral, removable assembly.
The proprietary supervising station receiving equipment is [_____] and the
transceiver shall be fully compatible with this equipment. At the
Contractor's option, and if UL listed, the transmitter may be housed in the
same panel as the fire alarm control panel.
2.9.1.1
Transmitter Power Supply
Each radio alarm transmitter shall be powered by a combination of locally
available 120-volt ac power and a sealed, lead-calcium battery.
a.
Operation: Each transmitter shall operate from 120-volt ac power.
In the event of 120-volt ac power loss, the transmitter shall
automatically switch to battery operation. Switchover shall be
accomplished with no interruption of protective service, and shall
automatically transmit a trouble message. Upon restoration of ac
power, transfer back to normal ac power supply shall also be
automatic. Each transmitter shall meet the following
requirements: [_____].
b.
Battery Power: Transmitter standby battery capacity shall provide
sufficient power to operate the transmitter in a normal standby
status for a minimum of 72 hours and be capable of transmitting
alarms during that period.
2.9.1.2
Radio Alarm Transmitter Housing
Transmitter housing shall be NEMA Type 1. The housing shall contain a lock
that is keyed [identical to the fire alarm system for the building.]
[identical to radio alarm transmitter housings on the base.] Radio alarm
transmitter housing shall be factory painted with a suitable priming coat
and not less than two coats of a hard, durable weatherproof enamel.
2.9.1.3
The Contractor shall provide [omnidirectional, coaxial, halfwave dipole
antennas] [_____] for radio alarm transmitters with a driving point
SECTION 13850A
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