Fire alarm 3-f-single_and_multiple-station_alarms_and_household_fire_alarm_systems

Part 3Special Systems

Referenced Publications

All these modules are based upon the NFPA 70 and the NFPA 72 publications unless otherwise dictated.

Agenda

Part 1 Fire Alarm System Fundamentals Part 2 Initiating Devices

Protected Premises Fire Alarm SystemsPart 3 Circuits & Pathways

Inspection Testing & MaintenanceNotification AppliancesSpecial Functions

Agenda

NFPA 72 Chapter 21 Emergency Control Functions &

Interfaces Chapter 23 Protected Premises Fire Alarm

Systems Chapter 24 Emergency Communication

Systems Chapter 26 Supervising Station Alarm Systems Chapter 27 Public Emergency Alarm Reporting

SystemsChapter 29 Single and Multiple-Station Alarms

and Household Fire Alarm SystemsChapters 22 / 25 / 28 Reserved

Single and Multiple-Station Alarms and Household Fire Alarm Systems

Chapter 2929.1 Application29.2 Purpose29.3 Basic Requirements29.4 Assumptions29.5 Detection and Notification29.6 Power Supplies29.7 Equipment Performance29.8 Installation29.9 Optional Functions29.10 Maintenance and Tests 29.11 markings and Instructions


29.1.3 The requirements of Chapters 10, 12, 14, 17, 18, 21, 23, 24, 26 and 27 shall not apply unless otherwise noted

29.1.5 This chapter shall apply to the life safety of occupants and not to the protection of property

29.3.5* Fire-warning equipment to be installed in residential occupancies shall produce the audible emergency evacuation signal described in ANSI S3.41


29.3.8.1 Mild to Severe Hearing Loss. Notification appliances provided for those with mild to severe hearing loss shall comply with the following:(1) An audible notification appliance producing a low

frequency alarm signal shall be installed in the following situations

29.3.8.2* Profound Hearing Loss. Visible notification appliances in accordance with the requirements of 18.5.4.6 and tactile notification appliances in accordance with the requirements of 18.10 shall be required for those with profound hearing loss


29.3.9 Signals from notification appliances shall not be required to be synchronized

29.4.1* Occupants. The requirements of this chapter shall assume that occupants are not intimate with the ignition and are capable of self-rescue

29.4.2.2 An escape route shall be assumed to be available to occupants and to be unobstructed prior to the event of the fire


29.5.1.1* Where required by other governing laws, codes, or standards for a specific type of occupancy, approved single- and multiple-station smoke alarms shall be installed as follows:(1)* In all sleeping rooms and guest rooms(2)* Outside of each separate dwelling unit sleeping area, within

21 ft (6.4 m) of any door to a sleeping room, with the distance measured along a path of travel

(3) On every level of a dwelling unit, including basements(4) On every level of a residential board and care occupancy

(small facility), including basements and excluding crawl spaces and unfinished attics

(5)* In the living area(s) of a guest suite(6) In the living area(s) of a residential board and care occupancy

(small facility)


29.5.2.1.1* Smoke and Heat Alarms … when two or more alarms are installed within a dwelling unit … shall be arranged so that the operation of any smoke or heat alarm causes all alarms within these locations to sound

29.6.1 Smoke and heat alarms shall be powered by one of the following means:(1) A commercial light and power source along with a secondary

power source that is capable of operating the device for at least 24 hours in the normal condition, followed by 4 minutes of alarm.


29.6.1 Smoke and heat alarms shall be powered by one of the following means:(2) a noncommercial ac power source along with a secondary

power source that is capable of operating the device for at least 7 days in the normal condition, followed by 4 minutes of alarm

(3) A nonrechargeable, nonreplaceable primary battery that is capable of operating the device for at least 10 years in the normal condition, followed by 4 minutes of alarm, followed by 7 days of trouble

(4) If a battery primary power supply is specifically permitted, a battery meeting the requirements of 29.6.6 or the requirements of 29.6.7

(5) A suitable spring-wound mechanism for the nonelectrical portion of a listed single station alarm


29.6.2 Household Fire Alarm Systems(1) Household fire alarm systems shall have two independent

power sources(2) The secondary source shall be capable of operating the

system for at least 24 hours in the normal condition, followed by 4 minutes of alarm

(3) The secondary power source shall be supervised(5) Low-power wireless systems shall comply with the

performance criteria of Section 23.18

29.6.5 Notification Appliance (with Smoke or Heat Alarm). If a visible notification appliance is used in conjunction with a smoke or heat alarm application for compliance with 29.3.7, the notification appliance shall not be required to be supplied with a secondary power source.


29.6.6 Primary Power Source (Nonrechargeable Battery). If smoke alarms are powered by a primary battery, the battery shall be monitored to ensure the following conditions are met:(1) All power requirements are met for at least 1 year of battery

life,(2) distinctive audible trouble signal before the battery is

incapable of operating(3) The audible trouble signal is produced at least once every

minute for 7 days


29.6.7 Primary Power Source (Rechargeable Battery). If smoke alarms are powered by a rechargeable battery, the following conditions shall be met:(1) The battery shall with proper charging, be able to power the

alarm for a life of 1 year.(2) The battery shall be automatically recharged by an circuit of

the commercial light and power source.(3) The battery shall be recharged within 4 hours …(4) A distinctive audible trouble signal shall sound before the

battery is incapable of operating(5) The audible trouble signal shall be produced at least once

every minute for 7 days.


29.7.2* Smoke Alarms, System Smoke Detectors, and Other Non-Heat Fire Detectors. Each device shall detect abnormal quantities of smoke or applicable fire signature, shall operate in the normal environmental conditions, and shall be in compliance with applicable standards such as ANSI/UL 268

29.7.3.2* Fixed-temperature detectors or alarms shall have a temperature rating at least 25°F (14°C) above the normal ambient temperature and shall not be rated 50°F (28°C) higher than the maximum anticipated ambient temperature in the room or space where installed


29.7.4 Operability. Single- and multiple-station alarms, including heat alarms, shall be provided with a convenient means for testing its operability by the occupant, system owner, or other responsible parties

29.7.5.5 A means for turning off activated alarm notification appliances shall be permitted only if the following conditions are satisfied:(1) The means is key-operated or located within a locked cabinet,

or arranged to provide equivalent protection against unauthorized use.

(2) The means includes the provision of a visible alarm silence indication.


29.7.6.2 Fire signals shall take precedence over any other signal or functions, even if a non-fire signal is activated first

29.7.6.3 Signals shall be distinctive so that a fire signal can be distinguished from signals that require different actions by the occupants


29.7.7.1 Wireless Systems. Household fire alarm systems utilizing low-power wireless transmission of signals within the protected dwelling unit shall comply with the requirements of Section 23.18

29.7.7.2.3 The maximum allowable response delay from activation of an initiating device to receipt and alarm/display by the receiver/control unit shall be 20 seconds

29.8.1.2 All devices shall be so located and mounted that accidental operation is not caused by jarring or vibration


29.8.1.4 The supplier or installing contractor shall provide the system owner or other responsible parties with the following:(1) An instruction booklet illustrating typical installation layouts(2) Instruction charts describing the operation, method, and

frequency of testing and maintenance of fire-warning equipment

(3) Printed information for establishing an emergency evacuation plan

(4) Printed information to inform system owners where they can obtain repair or replacement service, and where and how parts requiring regular replacement, such as batteries or bulbs, can be obtained within 2 weeks


29.8.2.2* The interconnection of smoke or heat alarms shall comply with the following:(1) Smoke or heat alarms shall not be interconnected in numbers

that exceed the manufacturer’s published instructions.(2) In no case shall more than 18 initiating devices be

interconnected (of which 12 can be smoke alarms) where the interconnecting means is not supervised.

(3) In no case shall more than 64 initiating devices be interconnected (of which 42 can be smoke alarms) where the interconnecting means is supervised

(4) Smoke or heat alarms shall not be interconnected with alarms from other manufacturers unless listed as being compatible with the specific model.

(5) When alarms of different types are interconnected, all interconnected alarms shall produce the appropriate audible response for the phenomena being detected or remain silent.


29.8.3.4 Specific Location Requirements. The installation of smoke alarms and smoke detectors shall comply with the following requirements(1) Smoke alarms and smoke detectors shall not be located

where ambient conditions, including humidity and temperature, are outside the limits specified by the manufacturer’s published instructions

(3)* Where the mounting surface could become considerably warmer or cooler than the room, such as a poorly insulated ceiling below an unfinished attic or an exterior wall, smoke alarms and smoke detectors shall be mounted on an inside wall.

(4)*Smoke alarms and smoke detectors shall not be installed within an area of exclusion determined by a 10 ft (3.0 m) radial distance along a horizontal flow path from a stationary or fixed cooking appliance


29.8.3.4 Specific Location Requirements. The installation of smoke alarms and smoke detectors shall comply with the following requirements

(5)*Smoke alarms and smoke detectors shall not be installed within a 36 in. (910 mm) horizontal path from a door to a bathroom containing a shower or tub.

(6) Smoke alarms and smoke detectors shall not be installed within a 36 in. (910 mm) horizontal path from the supply registers of a forced air heating or cooling system and shall be installed outside of the direct airflow from those registers.

(7) Smoke alarms and smoke detectors shall not be installed within a 36 in. (910 mm) horizontal path from the tip of the blade of a ceiling-suspended (paddle) fan.



(8) Where stairs lead to other occupied levels, a smoke alarm or smoke detector shall be located so that smoke rising in the stairway cannot be prevented from reaching the smoke alarm or smoke detector by an intervening door or obstruction

(9) For stairways leading up from a basement, smoke alarms or smoke detectors shall be located on the basement ceiling near the entry to the stairs

(10)*For tray-shaped ceilings (coffered ceilings), smoke alarms and smoke detectors shall be installed on the highest portion of the ceiling or on the sloped portion of the ceiling within 12 in. (300 mm) vertically down from the highest point.



(11) Smoke alarms and detectors installed in rooms with joists or beams shall comply with the requirements of 17.7.3.2.4

(12) Heat alarms and detectors installed in rooms with joists or beams shall comply with the requirements of 17.6.3

29.8.5 Wiring and Equipment. The installation of wiring and equipment shall be in accordance with the requirements of NFPA 70,


29.9 Optional FunctionsThe following optional functions of fire-warning equipment shall be permitted:

(1) Notification of the fire department, either directly or through an alarm-monitoring service

(2) Monitoring of other safety systems, such as fire sprinklers for alarm or proper operating conditions

(3) Notification of occupants or others of potentially dangerous conditions, such as the presence of fuel gases or toxic gases such as carbon monoxide

(4) Notification of occupants or others of the activation of intrusion (burglar alarm) sensors

(5) Any other function, safety related or not, that could share components or wiring


29.10 Maintenance and TestsFire-warning equipment shall be maintained and tested in accordance with the manufacturer’s published instructions and per the requirements of Chapter 14

29.11.1 Alarms. All alarms shall be plainly marked …

29.11.2 Fire Alarm Control Unit. All household fire-warning equipment or systems shall be plainly marked …

Fire alarm 3-f-single_and_multiple-station_alarms_and_household_fire_alarm_systems

Engineering

Transcript of Fire alarm 3-f-single_and_multiple-station_alarms_and_household_fire_alarm_systems