Provide [sealed lead calcium,] [or] [sealed lead acid,] [or] [vented wet
cell nickel cadmium,] batteries and charger. Drycell batteries are not
acceptable. House batteries in the control panel or in a well constructed
vented steel cabinet with cylinder lock, non-corrosive base, and louvered
vents. Provide batteries of adequate ampere-hour rating to operate the
system under supervisory conditions for 60 hours, at the end of which time
batteries shall be capable of operating the entire system in a full alarm
condition for not less than [30] [15] minutes. Provide calculations
substantiating the battery capacity. Provide reliable separation between
cells to prevent contact between terminals of adjacent cells and between
battery terminals and other metal parts. Provide batteries with
post-and-nut, "L"-blade, or similar terminals. Slip-on tab type terminals
are not acceptable. When a separate battery cabinet is used, provide a
fuse block for battery leads within the cabinets. Finish the cabinet on
the inside and outside with enamel paint. Locate the top of the battery
cabinet not more than 1.22 meters 4 feet above floor level.
2.3.2.2
Battery Charger
Provide completely automatic high/low charging rate type charger capable of
recovery of the batteries from full discharge to full charge in 24 hours or
indicate the state of battery charge under load. Meters shall be factory
installed, or factory-supplied plug-in modules. Field installation of
meters other than the panel manufacturer's plug-in modules is prohibited.
Provide a trouble light to indicate when batteries are manually placed on a
high rate of charge as part of the unit assembly if a high-rate switch is
provided. House charger in the control panel or battery cabinet.
2.4
PNEUMATIC DETECTION SYSTEM
**************************************************************************
NOTE: Pneumatic detection system may be used only
with single acting rate-of-rise heat detectors.
Consult with the Division Fire Protection Engineer
for guidance on use of pneumatic detection systems.
**************************************************************************
Provide pneumatic single acting rate-of-rise heat detectors. All tubing
shall be supervised and installed in protective metal conduit or tubing.
2.4.1
Air Compressor
Shall be automatic, electric motor driven and include piping, pressure
switch, regulator, and tank if required. Provide compressor with a minimum
capacity capable of charging the pneumatic detection system to normal
system pressure in 15 minutes and shall include all controls necessary to
maintain the system fully charged. [Provide at least one compressor for
every [_____] detection circuits.]
2.4.2
Piping and Control Panel
Provide copper piping. Provide a control panel or equivalent device(s) to
automatically maintain the required pneumatic pressure in the detection
system, and limit the quantity of air that enters the detection/release
system. Provide supply air and system air pressure gages.
SECTION 13958N
Page 22
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