contact the EFD/EFA Fire Protection Engineer.
**************************************************************************
[Provide in each air-handling system with supply air capacity greater than
944 L/s 2000 cfm in accordance with NFPA 90A. Locate downstream of the
supply air filters and prior to any branch connection in accordance with
NFPA 72. Provide in each air-handling system, serving more than one story,
and having a return air capacity greater than 7079 L/s 15000 cfm in
accordance with NFPA 90A. Locate at each story prior to connection to
common return and at return connection to air handler prior to any fresh
air inlet connection and prior to any recirculation connection in
accordance with NFPA 72. Design for detection of abnormal smoke densities
by the [ionization] [or][photoelectric] principle, responsive to both
invisible and visible particles of combustion, and not susceptible to
undesired operation by changes in relative humidity. Provide UL listed or
FM approved detectors for duct installation. Provide duct detectors with an
approved duct housing, mounted exterior to the duct, and with perforated
sampling tubes extending across the width of the duct. Provide 115 VAC
power supply unit integral with duct housing. Obtain power from [the source
to the air-handling unit or air-handling unit controls] [the location
indicated].
Detectors shall have test port or test switch. [Provide remote alarm
indicator [and keyed test] device at [_____] [the location indicated].]
Provide each detector with a visible indicator lamp that lights when the
detector is activated. Activation of duct detector shall cause shutdown of
the associated air-handling unit [and closing of dampers] [and shall sound
an alarm bell, with minimum 152 mm 6 inch diameter, in a normally occupied
area] located [as directed] [as indicated]. [Provide a separate bell with
an engraved plastic or metal label indicating which unit each bell
annunciates for each air-handling unit.]]
2.6
INDICATORS
2.6.1
Thermometers
**************************************************************************
NOTE: Indicate on drawings which range or span is
preferred.
**************************************************************************
Provide bi-metal thermometers in locations as indicated. Bi-metal
thermometers shall have either 9 inch scales or 3.5 inch dials and shall
have insertion, immersion or averaging elements as indicated. Provide
thermowells for liquid sensing applications. Select thermometer ranges so
normal temperatures are approximately equal to midpoint readings on the
scale.
2.6.2
Pressure Gages
**************************************************************************
NOTE: Indicate on drawings which range or span is
preferred.
**************************************************************************
a.
Provide pressure gages for all pneumatic outputs. Select gage
range so normal pressures are approximately equal to the midpoint
readings on the scale, unless otherwise specified. Accuracy shall
SECTION 15910N
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