2.8
FIRE DETECTION AND ALARM SYSTEM PERIPHERAL EQUIPMENT
2.8.1
Electromagnetic Door Hold-Open Devices
Devices shall be attached to the walls unless otherwise indicated. Devices
shall comply with the appropriate requirements of UL 228. Devices shall
operate on 24 Volt dc power. Compatible magnetic component shall be
attached to the door. Under normal conditions, the magnets shall attract
and hold the doors open. When magnets are de-energized, they shall release
the doors. Magnets shall have a holding force of 111.2 N 25 pounds.
Devices shall be UL or FM approved. Housing for devices shall be brushed
aluminum or stainless steel. Operation shall be fail safe with no moving
parts. Electromagnetic door hold-open devices shall not be required to be
held open during building power failure.
2.8.2
Conduit
Conduit and fittings shall comply with UL 6, UL 1242 and UL 797.
2.8.3
Wiring
Wiring shall conform to NFPA 70. Wiring for 120 Vac power shall be No. 12
AWG minimum. Wiring for Fire Alarm circuits shall be No. [16] [14] AWG
minimum. Voltages shall not be mixed in any junction box, housing, or
device, except those containing power supplies and control relays. Wiring
shall conform to NFPA 70. System field wiring shall be solid copper and
installed in metallic conduit or electrical metallic tubing, except rigid
plastic conduit may be used under slab-on-grade. Conductors shall be color
coded. Conductors used for the same functions shall be similarly color
coded. Wiring code color shall remain uniform throughout the circuit.
Pigtail or T-tap connections to initiating device circuits, supervisory
alarm circuits, and notification appliance circuits are prohibited.
2.8.4
Special Tools and Spare Parts
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NOTE: Remove last sentence when not required.
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Software, connecting cables and proprietary equipment, necessary for the
maintenance, testing, and reprogramming of the equipment shall be furnished
to the Contracting Officer. Two spare fuses of each type and size required
shall be furnished. Two percent of the total number of each different type
of detector, but no less than two each, shall be furnished. Spare fuses
shall be mounted in the fire alarm panel.
2.9
TRANSMITTERS
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NOTE: State the make and model number of existing
proprietary supervising station receiving equipment.
The choice of code transmitter, or radio transmitter
depends upon the type of existing fire reporting
system at the activity. When telegraphic systems
exist, use code transmitter. Determine the type of
activity reporting system (i.e., positive non
interfering or shunt). In most cases a local
energy-tripping device will be required.
SECTION 13850A
Page 25
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