Fire alarm division in buildings equipped with automatic fire alarm equipments shall be determined pursuant to the following provisions:
1.Each fire alarm division may not cover more than one storey or more than 600m2 floor area. However, where the total floor area of tow adjacent storeys is not more than 500m2, the two storeys may be allocated into a same division.
2.The length of any side of a division shall be not more than 50m. Where photoelectrical separated detector is equipped, the length shall be under 100m.
3.Where any corner of a story can be directly observed through the main gateway or the gateway directly to the stairway, the 600m2 prescribed in 112.1 shall be increased to 1000m2.
4.Stairway, ramped aisle, elevating way of elevator, and piping room shall be regarded as a fire alarm division where the horizontal distance between each other is within 50m and the difference between top storeys is less than two storeys. But the divisions shall be separately set in aisle, passage, living room and other places on each floor.
5.As for stairways or ramped aisles, every 45m of vertical distance shall be regarded as a fire alarm division, but the underground part shall be treated as an individual division.

In five-storey or higher buildings with a total floor area more than 3000m2, the ringing mode of automatic fire alarm equipments shall meet the following requirements:
1.When the fire is the on second floor or above, only this storey and the direct upper two storeys and the direct lower storey shall make alarm.
2.When the fire is on the ground floor, only this storey and the direct upper storey and the underground storeys shall make alarm.
3.When the fire is underground, only the first storey and the underground storeys shall make alarm.
4.The whole area should make alarm immediately when the alarm previous mentioned are activated less than ten minutes or the fire alarm signal receiving switchboard receives the fire signal again.

Proper detector shall be selected from the table below according to the height of the mounting position. If the height of the ceiling is different from that of the roof slab in a same room, the mean value shall be used for
┌─────┬─────┬──────┬─────┬─────┐
│Height of │ <4m │ 4m≦H<8m │8m≦H<15m │15m≦H<20 │
│mounting │ │ │ │ │
│position │ │ │ │ │
│(H) │ │ │ │ │
├─────┼─────┼──────┼─────┼─────┤
│Type of │Different-│Differential│Different-│Type I │
│detector │ial │topical, │ial │ionic │
│ │topical, │differential│distribut-│topical, │
│ │different-│distributed,│ed style, │Type I │
│ │ial │compensated │Type I or │photo- │
│ │distribut-│topical, │Type II │electrical│
│ │ed, │fixed │ionic │topical, │
│ │compensat-│temperature │topical, │photo- │
│ │ed topical│special type│Type I or │electrical│
│ │, fixed │or Type I, │Type II │separated,│
│ │temperatu-│Type I or │photo- │or flame │
│ │re, ionic │TypeII ionic│electrical│type │
│ │topical, │topical,Type│topical, │ │
│ │photo- │I or Type II│photo- │ │
│ │electrical│photo- │electrical│ │
│ │topical, │electrical │separated,│ │
│ │photo- │topical, │or flame │ │
│ │electrical│photo- │type │ │
│ │separated,│electrical │ │ │
│ │or flame │separated,or│ │ │
│ │type │flame type │ │ │
└─────┴─────┴──────┴─────┴─────┘

Mounting position of detector shall comply with the following provisions:
1.Where the ceiling is equipped with an air outlet, the mounting position shall be 1.5m or farther away from the outlet with exceptions of flame type, differential distributed and photoelectrical separated type.
2.Where there is an air outlet on the wall, the mounting position shall be 1.5m or farther away from the outlet, unless the distance between the outlet and the ceiling is not less than 1m.
3.Where the ceiling is equipped with an air outlet or inlet, smoke detector shall be equipped within 1m around the outlet or inlet.
4.In principle, topical detectors shall be mounted around the center of the detected area.
5.Topical detectors may not incline 45°or more with exception of flame type.

It is allowable that detectors are not installed in the following occasions:
1.The mounting surface is higher than 20m (except for flame type detectors).
2.Places where fire detecting becomes ineffective due to airflow.
3.Toilet, water closet or bathroom.
4.Cold stores where automatic temperature regulating device that is able to detect the occurrence of fire in the beginning has been equipped.
5.Cashbox where the main construction is fireproof and the opening is equipped with fireproof door that can resist the fire at least one hour.
6.Above water surface of indoor swimming pool, or ice surface of skating ground.
7.Processing grounds of inflammable stones or metals, where flammable substances are not stored or processed.
8.Other places designated by the central regulating authority.

Smoke detector or heat & smoke compound detector may not be installed in the following occasions:
1.Places where lots of dust, powder or water steam stay.
2.Places where corrosive gas will be given off.
3.Kitchen and other places where fume stays at other times.
4.Places under significantly higher temperature.
5.Places where lots of discharged waste gas stay.
6.Places where fume will flow into in large amount.
7.Places where dew is likely to form.
8.Places where flame of equipments using fire is exposed outside.
9.Other places where the detector can’t work normally.
Flame type detector may not be installed in the following places:
1.Places listed in the above clauses 2~4, or 6~7.
2.Places where lots of steam stays.
3.Other places where the detector can’t work normally.
Proper detector shall be selected from the table below for the places listed in the above two clauses.
┌─────────────┬────┬───┬───┬───┬
│Place │ 1 │ 2 │ 3 │ 4 │
│ ├────┼───┼───┼───┼
│ │Where │Where │Where │Where │
│ │lots │lots │corro-│fume │
│ │of dust │of │sive │stays │
│ │, powder│water │gas │at │
│ │or stay.│steam │will │other │
│ │ │stay │be │times │
│ │ │ │given │ │
│ │ │ │off │ │
├───┬────┬────┼────┼───┼───┼───┼
│Type │Diffe- │Type I │ ○ │ │ │ │
│of │rential ├────┼────┼───┼───┼───┼
│detec-│topical │Type II │ ○ │ │ │ │
│tor ├────┼────┼────┼───┼───┼───┼
│ │Diffe- │Type I │ ○ │ │ ○ │ │
│ │rential ├────┼────┼───┼───┼───┼
│ │distri- │Type II │ ○ │ ○ │ ○ │ │
│ │buted │ │ │ │ │ │
│ ├────┼────┼────┼───┼───┼───┼
│ │Compen- │Type I │ ○ │ │ ○ │ │
│ │sated ├────┼────┼───┼───┼───┼
│ │topical │Type II │ ○ │ ○ │ ○ │ │
│ ├────┼────┼────┼───┼───┼───┼
│ │Fixed │Special │ ○ │ ○ │ ○ │ ○ │
│ │tempe- │Type │ │ │ │ │
│ │rature ├────┼────┼───┼───┼───┼
│ │ │Type I │ ○ │ ○ │ ○ │ ○ │
│ ├────┴────┼────┼───┼───┼───┼
│ │Flame type │ ○ │ │ │ │
├───┴─────────┴────┴───┴───┴───┴
│Note:
│1. “○”stands for selectable equipments.
│2. The differential topical type detector, compensated topical
│ type detector or differential distributed type detector used
│ in place 1 should have the structure that dust and powder are
│ not easily invaded.
│3. Fixed temperature or compensated type detectors used in
│ places 1, 2, 4 and 8 shall be provided with waterproof
│ functions.
│4. In places 3, where fixed temperature or compensated type
│ detectors are used, they shall be acid resistant or anti-
│ corrosive pursuant to the class of the corrosive gas,
│ where differential distributed detectors are used, effec-
│ tive measures shall be taken to protect the air pipes and
│ detectors from being corroded.
└───────────────────────────────
────┬───┬───┬───┬─────┐
5 │ 6 │ 7 │ 8 │ 9 │
────┼───┼───┼───┼─────┤
Under │Where │Where │Where │Places │
signifi-│lots │lots │dew is│where │
cantly │of │of │likely│flame │
high │dis- │fume │to │of equi- │
tempera-│charge│will │form │pments │
ture │waste │flow │ │using fire│
│gas │into │ │is exposed│
│stay │ │ │outside │
────┼───┼───┼───┼─────┤
│ ○ │ ○ │ │ │
────┼───┼───┼───┼─────┤
│ ○ │ ○ │ │ │
────┼───┼───┼───┼─────┤
│ ○ │ ○ │ ○ │ │
────┼───┼───┼───┼─────┤
│ ○ │ ○ │ ○ │ │
│ │ │ │ │
────┼───┼───┼───┼─────┤
│ ○ │ ○ │ ○ │ │
────┼───┼───┼───┼─────┤
│ ○ │ ○ │ ○ │ │
────┼───┼───┼───┼─────┤
○ │ ○ │ ○ │ ○ │ ○ │
│ │ │ │ │
────┼───┼───┼───┼─────┤
○ │ ○ │ ○ │ ○ │ ○ │
────┼───┼───┼───┼─────┤
│ ○ │ │ │ │
────┴───┴───┴───┼─────┤
│ │
│ │
│ │
│ │
│ │
│ │
│ │
│ │
│ │
│ │
│ │
────────────────┴─────┘

Detectors of smoke detecting type, smoke & heat compound type or flame type may be selected for the places listed in the table below:
┌─────┬────┬─────┬────┬─────┬
│Places │Stairway│Aisle or │Elevator│Places │
│ │or │passage │hoistway│where │
│ │ramped │(only for │or pipin│the │
│ │aisle │those │room │height │
│ │ │described │ │of │
│ │ │in Article│ │ceiling │
│ │ │12.1, 12.2│ │is 15m or │
│ │ │(2) and │ │higher │
│ │ │(6)~(10), │ │but lower │
│ │ │12.4 and │ │than 20m. │
│ │ │12.5 │ │ │
├─────┼────┼─────┼────┼─────┼
│Smoke │ ○ │ ○ │ ○ │ ○ │
│detecting │ │ │ │ │
│type │ │ │ │ │
├─────┼────┼─────┼────┼─────┼
│Smoke and │ │ ○ │ │ │
│heat │ │ │ │ │
│compound │ │ │ │ │
│type │ │ │ │ │
├─────┼────┼─────┼────┼─────┼
│Flame │ │ │ │ ○ │
│type │ │ │ │ │
├─────┼────┴─────┴────┴─────┴
│Note │
│ │“ ○” stands for selectable equipments.
└─────┴──────────────────────
─────┬──────┐
Where the │Underground │
ceiling │storeys, │
is higher │no-opening │
than 20m │storeys, │
│and storeys │
│above the │
│11th floor │
│(only for │
│those │
│described │
│in Article │
│12.1, 12.2(2│
│), (6) and │
│(8)~(10) and│
│12.5.) │
─────┼──────┤
│ ○ │
│ │
│ │
─────┼──────┤
│ ○ │
│ │
│ │
│ │
─────┼──────┤
○ │ ○ │
│ │
─────┴──────┤
│
│
────────────┘

The detecting area of a detector refers to the space divided and surrounded by columns with a net height of not less than 40cm or other similar constructions around the mounting surface of the detector. But for detectors of differential distributed and smoke-detecting types, the net height shall be increased to not less than 60cm.

Differential topical, compensated topical and fixed temperature type detectors shall be equipped according the following provisions:
1.The lower end of detector shall be located within 30cm under the mounting surface.
2.At least one detector of the proper type shall be equipped in every effective detecting area following the table below:
┌─────────────────┬────────────
│Height of mounting surface (H) │ <4m
├─────────────────┼───────────┬
│Construction of building │Fireproof buildings or│
│ │buildings fireproof │
│ │construction. │
├─────┬──────┬────┼───────────┼
│Type of │Differential│Type I │ 90 │
│detector │topical ├────┼───────────┼
│and │ │Type II │ 70 │
│effective ├──────┼────┼───────────┼
│detecting │Compensated │Type I │ 90 │
│area (m2) │topical ├────┼───────────┼
│ │ │Type II │ 70 │
│ ├──────┼────┼───────────┼
│ │Fixed │Special │ 70 │
│ │temperature │Type │ │
│ │topical ├────┼───────────┼
│ │ │Type I │ 60 │
│ │ ├────┼───────────┼
│ │ │Type II │ 20 │
└─────┴──────┴────┴───────────┴
─────┬──────────────────┐
│ 4m≦H<8m │
─────┼────────────┬─────┤
Other │Fireproof buildings or │Other │
buildings │buildings with fireproof│buildings │
│construction │ │
─────┼────────────┼─────┤
50 │ 45 │ 30 │
─────┼────────────┼─────┤
40 │ 35 │ 25 │
─────┼────────────┼─────┤
50 │ 45 │ 30 │
─────┼────────────┼─────┤
40 │ 35 │ 25 │
─────┼────────────┼─────┤
40 │ 35 │ 25 │
│ │ │
─────┼────────────┼─────┤
30 │ 30 │ 15 │
─────┼────────────┼─────┤
15 │ -- │ -- │
─────┴────────────┴─────┘
3.Detectors with fixed temperature functions shall be installed in places where the maximum ambient temperature at other times is 20℃ ore more lower than the nominal fixed temperature point of compensated topical detectors or than the nominal operating temperature of other detectors with fixed temperature functions. If a detector has two or more nominal operating temperatures, it shall be installed in places where the maximum ambient temperature at other times is 20℃ or more lower than the lowest nominal operating temperature.

Differential distributed detectors shall be installed pursuant to the following provisions:
1.Where air pipe differential distributed detectors are used, the following provisions shall apply:
(1)The exposed part of air pipes inside each detecting area shall be not shorter than 20m.
(2)The length of pipes connected to a same detector shall be not more than 100m.
(3)Air pipes shall be installed within 30cm under the mounting surface.
(4)Air pipes shall be mounted at the positions within 5m from any side of the mounting surface. The interval between the pipes shall be not more than 9m in fireproof buildings or buildings with fireproof construction, and not more than 6m in other buildings, unless effective fire detection can be made pursuant to the range and shape of the detecting area.
2.Where thermocouple differential distributed detectors are used, the following provisions shall be observed:
(1)Thermocouple shall be installed within 30cm under the mounting surface.
(2)The number of detectors required by each detecting area shall comply with the table below:
┌──────┬──────┬────────────────┐
│Construction│Floor area │Number of required detectors │
│of buildings│of detecting│ │
│ │area │ │
├──────┼──────┼────────────────┤
│Fireproof │ ≦88m2 │At least 4 │
│buildings or├──────┼────────────────┤
│buildings │ >88m2 │4 basically, one more every add-│
│with │ │itional 22m2 (including less │
│fireproof │ │than 22m2) │
│construction│ │ │
├──────┼──────┼────────────────┤
│Other │ ≦72m2 │At least 4 │
│buildings ├──────┼────────────────┤
│ │ >72m2 │4 basically, one more every add-│
│ │ │itional 18m2 (including less │
│ │ │than 18m2) │
└──────┴──────┴────────────────┘
(3)Up to 20 thermocouples may be mounted to a same detector.
3.Where thermal semiconductor differential distributed detectors are used, the following provisions shall be observed:
(1)The lower end of detector shall be located within 30cm under the mounting surface.
(2)At least two detectors of the proper type shall be equipped in every effective detecting area following the table below:
┌──────┬──────┬────────────────┐
│Height of │Construction│Type of detector and effective │
│mounting │of buildings│detecting area (m2) │
│surface (H) │ ├───────┬────────┤
│ │ │ Type I │ Type II │
├──────┼──────┼───────┼────────┤
│H<8m │Fireproof │ 65 │ 36 │
│ │buildings or│ │ │
│ │buildings of│ │ │
│ │fireproof │ │ │
│ │construction│ │ │
│ ├──────┼───────┼────────┤
│ │Other │ 40 │ 26 │
│ │buildings │ │ │
├──────┼──────┼───────┼────────┤
│8m≦H<15m │Fireproof │ │ │
│ │buildings or│ │ │
│ │buildings of│ 50 │ -- │
│ │fireproof │ │ │
│ │construction│ │ │
│ ├──────┼───────┼────────┤
│ │Other │ 30 │ -- │
│ │buildings │ │ │
└──────┴──────┴───────┴────────┘
(3)The number of the heat sensors connected a same detector shall be not less than 2 and not more than 15.
The above-mentioned detector shall be installed in places convenient for inspection and repair, and the mounting surface may not incline more than 5°.
Fixed temperature detectors shall comply with the following provisions:
1.Detector shall be mounted within 30cm under the mounting surface.
2.In any detecting area, Type I detector shall be installed within a horizontal distance from any point of the mounting surface not more than 3m (4.5m in fireproof buildings or buildings with fireproof construction), and Type II detector shall be installed within a horizontal distance from any point of the mounting surface not more than 1m (3m in fireproof buildings or buildings with fireproof construction).

Smoke detecting type detectors except photoelectrical separated type shall comply with the following provisions:
1.Where the ceiling of living room is not more than 2.3m above the floor, or the floor area is not more than 40m2, detectors shall be installed nearby the gateway.
2.The lower end of detector shall be within 60cm under the mounting surface.
3.Detectors shall be mounted 60cm or more away from the wall or beams.
4.At least one detector of the proper type shall be installed in every effective detecting area pursuant to the table below with exception of aisle, passage, stairway and ramped road surface:
┌──────────┬───────────────────┐
│Height of mounting │Type of detector and effective │
│surface (H) │detecting area (m2) │
│ ├──────────┬────────┤
│ │Type I or Type II │ Type III │
├──────────┼──────────┼────────┤
│ H<4m │ 150 │ 50 │
├──────────┼──────────┼────────┤
│ 4m≦H<20m │ 75 │ -- │
└──────────┴──────────┴────────┘
5.In aisles and passages, at least one detector shall be installed every 30m of waking distance; if Type III detector is used, at least one shall be installed for every 20m of travel distance, and one for every internal of less than 10m if the distance to the final wall is less tan 15m. But it is allowable that no detector is equipped where the travel distance from aisle or passage to stairway is less than 10m, and the stairway is equipped with fireproof door opened at other times, or the living rooms have gateways toward the opening.
6.In stairway, ramped aisle and escalator, at least one detector shall be equipped for every 15m of vertical distance; where Type III detectors are used, at one shall be equipped for every 10m of vertical distance.
7.In elevator hoistway and piping room (the sectional area of the pipe is not less than 1m2), detectors shall be installed on the top. However, where the machine room of elevator hoistway is on the top and the hoistway and machine room have openings, detectors shall be installed in the machine room, not on the top of the elevating way.

Photoelectrical separated detectors shall comply with the following provisions:
1.The light-receiving surface of detector shall be located under the sunshine.
2.The detector shall be installed at the position 60cm or farther away from the wall parallel to the optical axis of the detector.
3.Photoreceptor and photo-transmitter of detector shall be located within 1m from the back wall.
4.The detector shall be installed on ceilings and other locations with a height less than 20m.
5.The optical axis of a detector shall have a height not less than 80% of that of the ceiling and others.
6.The optical axis of a detector may not be longer than the nominal supervising distance of the detector.
7.The distance between the optical axis of the detector and the alert area shall be not more than 7m.
The above-mentioned optical axis of detector refers to the line from the center of light-receiving face to the center of light-transmitting surface.

Flame type detector shall comply with the following provisions:
1.Detector shall be installed on ceiling, floorslabs, or wall.
2.The nominal supervising distance of a detector shall cover the space within 1.2m from the floor surface.
3.Detector may not be installed at a location where there is any obstacle encumbering the detector from detecting the occurrence of fire.
4.Detector may not be located directly under the sunshine, unless lightproof function is provided to prevention detection from being encumbered.

Fire alarm signal receiving switchboard shall meet the following requirements:
1.Fire alarm division indicating device shall be provided to indicate the division where the fire takes place.
2.Sound that is able to attract the attention from the safeguards shall be given out on occurrence of fire.
3.Device communicating with manual alarm equipments shall be attached.
4.Where there are two or more fire alarm signal receiving switchboards in a same building, necessary equipments shall be installed for the receiving switchboards to communicate with each other.
5.Drawings shall be provided nearby the fire alarm signal-receiving switchboard for distinguishing the division where the fire takes place.
6.In fire alarm divisions equipped with accumulative detector or relay, the signal receiving switchboard may not have two-signal function.
7.Where an accumulative time is set for the signal receiving switchboard, relay, and smoke-detecting detector, the time shall be not more than 60 seconds; where other detectors are used, the time is not more than 20 seconds.
8.If it is difficult to hear the fire alarm or identify the emergency broadcast voice due to the volume of the business or the characteristics of the enclosed compartment in a music halls, ballrooms, night clubs, clubs, beauty parlors (tourist parlors and audio-video parlors, etc), massage parlors, video viewing halls (MTV, etc), audio-visual sing-along halls (KTV, etc), bars, pubs, and liquor stores (clubs) or other similar places, the relevant entertainment audio-visual equipment should be stopped in case of fire.
9.The fire alarm signal receiving switchboard shall have the function of forcing the local alarm sound device to sound within a certain period of time after receiving the fire signal or when receiving the fire signal again.
Buildings with a total floor area of less than 350 m2 may be equipped with a single loop fire alarm receiver switchboard, the installation of which is not restricted by the first paragraph and the third to fifth paragraphs of the preceding paragraph; the same applies to the floor and premises use classification in accordance with Article 19, paragraph 1, paragraph 4, and the floor area of the floor is less than 350 m2.

The location of fire alarm signal receiving switchboard shall meet the following requirements:
1.Fire alarm signal receiving switchboard shall be located in watchroom or other populated places. Where a disaster prevention center is set up, the switchboard shall be located in the center.
2.May not be exposed in direct sunshine.
3.Inclination shall be avoided and the shell shall be earthed.
4.The operating switch of wall-mounting switchboard shall be 0.8m~1.5m high from the floor (0.6~1.5m for seat type)

Wiring of automatic fire alarm equipments shall comply with the following provisions in addition to Regulations for Installation of User's Electricity Device:
1.Signal loop of normally opened detectors shall employ serial connection, and terminal resistor shall be attached for the fire signal-receiving switchboard to perform automatic detection of loop disconnection.
2.Where Type P signal receiving switchboard employs the wiring mode of several divisions sharing a same public line, the number of the divisions shall be not more than 7.
3.Detector loop resistance of Type P signal receiving switchboard shall be less than 50Ω
4.A 250V insulation ohmmeter shall be used to measure the insulation resistance between wires of power supply circuit as well as between the wire and the earth. Where the voltage to earth is not more than 150V, the resistance shall be not less than 0.1MΩ; where the voltage to earth exceeds 150V, the resistance shall be not less than 0.2MΩ. A 250V insulation ohmmeter shall also be used to measure the insulation resistance between loop wires of the detector as well as between the wire and the earth, and in each fire alarm division the resistance shall be not more than 0.1MΩ.
5.Where the wire is buried out the door or is likely to be immersed by water, cable coated by metal pipe or plastic wire conduit shall be used, and a distance not less than 30cm shall be kept between the signal cable and the electric wire.

Battery shall be used as emergency power source for automatic fire alarm equipments, and the capacity of battery shall be able to ensure the fire alarm equipment effectively run for 10 consecutive minutes.