Specifications - State of Delaware

SECTION 283100 - FIRE ALARM SYSTEMS/ MASS NOTIFICATION SYSTEM: continued
J. Fire Alarm Devices: Provide manufacturer's standard construction of the following types and
characteristics.
1. Nonaddressable Automatic Heat Detectors shall comply with UL 521:
a. Rate-compensated, 24Vdc, 160ºF, spot type, restorable, Fenwal #27121-0-160, or
approved equal. Provide one terminal strip in each heat detector back box to join
the heat detector pig-tails and the field wiring. Do not terminate the two conductors
(from the other cross zone) that compass directly through the back box to next
conductor. For use in hangar.
2. Nonaddressable Automatic Smoke (Combustion Products) Detectors: Provide
manufacturer's standard construction automatic smoke detectors of the following types.
a. Photoelectronic smoke detector, 24Vdc, spot types, with pulsed infrared LED light
source for operation on voltage indicated. Design detector for mounting on
interchangeable type base. Nominal sensitivity shall be 2.5%-3.5% per foot
obscuration when tested per UL 268. Provide self-restoring smoke detector which
does not require resetting. Provide flashing LED indicator for normal operation
which changes to steady on alarm condition. Detector shall comply with UL 268.
Provide where indicated.
b. In-duct photoelectronic type, 24Vdc, with integral and remote test-reset-off keyed
switch and remote LED alarm light. Provide sampling tubes of design and
dimension as recommended by the manufacturer for the specific duct size where it
is applied. Detector shall comply with UL 268A. Provide adjacent "Test-Off-
Reset" keyed switch mounted 84 inches above the finished floor.
3. Flow Switch: Nonaddressable vane type water flow switches tested at 300 pounds per
square inch that shall activate on a flow of 10 gallons per minute (minimum) rated
24Vdc.
4. Pressure Switch: Nonaddressable pressure type water flow switch, rated 24Vdc.
5. Tamper Switch: Nonaddressable valve supervisory switches shall be mounted to signal
trouble between the first and second revolution of the valve wheel, removal of the switch,
or opening the cover of the switch.
6. Audible and Visual Alarms:
a. Horns: Provide manufacturer's standard construction, 24Vdc, fire alarm horn with
the following features. Horn shall not exceed 110 dBA at 10 feet.
(1) One-Tone: Three-pulse temporal pattern coded signal with general alarm
(steady horn tone that matches existing base standard).
(2) Surface mounted (with grille) in unfinished areas and outdoors.
(3) Semi-flush mounted at dry indoor locations.
(4) Single projection, unless indicated otherwise.
b. Speakers shall conform to the applicable requirements of UL 1480. Speakers shall
have six different sound output levels and operate with audio line input levels of
100Vac, 70Vac, 7Vac, and 25Vac, by means of selectable tap settings. Tap settings
shall include taps of 1/4, 1/2, 1, 2, and 8 watts. Speakers shall incorporate a high
efficiency speaker for maximum output at minimum power across a frequency
range of 400 to 4,000 Hz, and shall have a sealed back construction. Speakers shall
be capable of installation on standard 4 inch square electrical boxes. All polarity
supervision of circuit wiring via the Fire Alarm Control Panel and the Mass
Notification Control Panel.
7. Visual Alarm Synchronized Strobes.
a. Clear or white lens, lettered red "FIRE" in 1-inch high letters, for Fire Alarm and
AMBER lens, lettered red "ALERT" for Mass Notification.
283100-6 DEAN283100.DOC