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
MANUAL RELEASE STATIONS
Operation of a manual station shall cause the control panel to go into
alarm condition and shall cause the valve(s) controlling the foam discharge
to the corresponding hazard to trip. Stations shall be of a type not
subject to operation by jarring or vibration. Stations shall have a dual
action release configuration to prevent accidental system discharge.
Break-glass-front stations are not permitted; however a pull lever
break-glass-rod type is acceptable. Station color shall be red. Station
shall provide positive visible indication of operation. Restoration shall
require use of a key or special tool. Place warning signs at each station
indicating that operation of the station will cause immediate AFFF
discharge. Where a fire alarm pull station is also mounted in the vicinity
of a foam release station, separate the stations by at least one meter 3
feet horizontally. Provided permanent engraved rigid plastic or metal
labels to clearly distinguish foam release stations from fire alarm
stations, and to indicate the function of each foam release station.
Stations shall be weatherproof type.
2.5
HEAT DETECTORS
**************************************************************************
NOTE: Select the type of heat detector most suited
for application or design. Do not use rate-of-rise
detectors in areas subject to rapid temperature
changes. Consult the Division Fire Protection
Engineer.
**************************************************************************
2.5.1
Spot-Type Heat Detectors
Designed for detection of fire by [combination fixed temperature
rate-of-rise] [rate compensating] principle. Space detectors in accordance
with their listing by UL or FM but not more than 15.25 meters 50 feet apart
around the tank perimeter. For fixed roof tanks provide detectors on the
tank wall just below the roof joint and at the center of the roof. For
floating roof tanks provide detectors on the interior side of the tank wall
above the highest possible elevation of the roof. Detectors shall be
intermediate temperature rated as defined by NFPA 72. Detectors, located
in hazardous locations as defined by NFPA 70, shall be types approved for
such locations. Provide with terminal screw type connections. Removal of
detector head from its base shall cause activation of system trouble
signal. Detectors shall be weatherproof type.
SECTION 13957N
Page 20
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