1.5.3 Standby Battery Power Supply: Standby battery power supply
shall be capable of operating the entire system for 60 hours, and following
this period, shall sound all alarm devices for a period of five minutes.
Battery charger shall be capable of fully charging de-energized batteries
in 48 hours. Battery capacity shall include a 15% overage factor to
account for aging.
1.5.4 Modules: All modules in the FACP shall be placement
supervised. When a module is removed, a trouble signal shall be indicated.
All FACPs shall have a lamp test feature.
1.6 MANUAL STATIONS: Specify screw terminals for wiring connections
for all manual station. Do not specify break-glass-front type stations or
pull-lever break-glass-rod type stations.
1.7.1 Layout of New Nonprogrammable or Nonaddressable Systems: All
signal initiation and notification circuits shall be Class A supervised.
The return loop (home run) for the wires to the FACP shall be in a separate
conduit and stated so in the specifications and shown on the plans. Fire
alarm riser diagrams shall show return conduits. Contract drawings shall
also show either a matrix diagram or logic diagram for operation of all
system devices or interlocks in addition to the standard fire alarm riser
18.104.22.168 Layout of Programmable Addressable Systems: All signal
initiation circuits shall be Class B supervised. All alarm notification
circuits for horns, bells, etc. shall be Class A supervised. Contract
drawings shall show a fire alarm riser diagram plus either a matrix diagram
or logic diagram of all system devices or interlocks.
1.7.2 Adding to an Existing System: When adding to an existing Class
B supervised system, Class B wiring may be used. Drawings shall indicate
manufacturer name, model no., voltage and wiring Class for all existing
1.7.3 Conductors: Wiring for 24 VDC fire alarm circuits shall be no
smaller than No. 16 AWG single solid copper conductors per National
1.7.4 Electrical Conduit: Electrical conduit shall be rigid metal,
IMT, or EMT. Do not use aluminum conduit. In hazardous areas, use rigid
metal conduit only. The minimum size conduit shall be 3/4-inch in
1.7.5 Voltage: The wiring of 120 VAC and 24 VDC circuits shall not
be placed in the same conduit. Separate conduits shall be used for 120 VAC
and 24 VDC circuits.
1.8 DOOR HOLD-OPEN DEVICES: 120 VAC door hold open devices shall be
provided when fire or smoke doors are expected to be propped open for
convenience or as a necessity of building operation. Regardless of the
hold open method, all hold open devices in the same building must release