Technical InformationGas MetersVarious Auxiliary EquipmentTechnical DocumentsControllers /Shutoff ValvesAlarmsMore than three floors (new building)Target buildingApplied lawsApartment complexCommercial facilityThere is no legal regulation.LP gasThere is no legal regulation.There is no legal regulation.There is no legal regulation.LP gasGas leak alarm itselfAutomatic gas shutoff system*orAutomatic gas shutoff system*Gas leak intensive monitoring systemGas leak indication lampAAutomatic gas shutoff systemGas leak alarm itselforLP gasThere is no legal regulation.Ministerial ordinances 1 and 2, January 20, 1981Office notice 263, June 3, 1981Office notice 461, November 15, 1985Office notice 578, September, 2000Cabinet order 6, January 23, 1981Ministerial ordinance 16, June 20, 1981Cabinet order 196, July 14, 1980Office notice 1099, July 1, 1981Ministerial ordinance 11, March 10, 1997Official notice 123, March 13, 1997Town gas, LP gasTown gas and LP gasGas business law(Ministry of Economy, Trade and Industry)Fire services act(Ministry of Internal Affairs and Communications)Building standards law(Ministry of Land, Infrastructure, Transport and Tourism)Liquefied petroleum gas law(Ministry of Economy, Trade and Industry)● Underground mall/ Total area more than 1,000 m² ● Semi-underground shopping mall/ In contact with the underground passage at the basement floor and having an area of more than 1,000 m2, and a total area dedicated for special use has more than 500 m²● Designated basements/ • Basement subject to fire prevention measures for designated use having a total floor area of more than 1,000 m² • Basement subject to fire protection measures for specific facility use having a total floor area of more than 1,000 m2, in which the portion specified for dedicated use has a total floor area of more than 500 m² Emergency reportReceiverTransfer unitGas leak alarmEmergency power supplyorVoice alarm equipmentGas leak alarm● Performing theater, film theater, entertainment hall, public hall, and similar facilities● Cabaret, nightclub, game hall, and similar facilities● Rent space and restaurant● Department store and market● Inn, hotel, dormitory, and apartment complex● Hospital, clinic, midwifery home● Elementary school, junior high school, high school, higher professional school, university, blind school, school for the deaf, school for disabled children, kindergarten, and other schools● Library, museum, and art museum● Public bath● Station, arriving and departing port or field for boat or airplane (limited to the construction used for passenger boarding, deboarding, and waiting)● Shrines, temples, churches, and similar facilities● Offices having a total floor area of more than 1,000 m2 (except for the facilities listed above)● Skyscraper building (construction with more than 60 m height)● Specific massive building • Performing theater, film theater, entertainment hall, or pavilion• Public hall or meeting hall• Cabaret, nightclubs or similar facilities• Game hall or dance hall• Waiting room, restaurant, or similar facilities• Restaurant• Department store, market, and shop or showroom selling items• Inn, hotel, or rest house• Steam bath, hot air bath, or similar facilities among public bath● Joint of middle pressure conducting pipe (except for welded joint)① Gas cocks and apparatuses are screw-tightened with metal pipe metal flexible hose or reinforced gas hose (with metal wire).② Use a gas cock with excessive spill prevention mechanism (fuse cock).③ Install a gas leak alarm facility according to the predetermined standards. One of the above is required.Gas leak alarm itselfAutomatic gas shutoff system*orOutdoor buzzer systemGas leak intensive monitoring systemGas leak intensive monitoring systemAutomatic gas shutoff system*BIf both of A and B apply (LP gas is used in newly built houses with more than three floors and in less than 69 houses), then one of following 2 kinds of installation is required.① Install the gas alarm facility as established in the liquefied petroleum gas law even if a reinforced hose or excessive spill prevention valve are installed.② Install the gas alarm facility as established in the building standards law if the reinforced hose or excessive spill prevention valve are not installed.Gas leak intensive monitoring systemHouses for more than three families (LP gas)Less than 69 houses within the same estate（）Outdoor buzzer typeorGas leak intensive monitoring systemGas Leak & Fire Alarm Equipment Laws and Regulations●Reference*Administrative advice37Gas Leak & Fire Alarm Equipment Laws and Regulations都市ガス総カタログ_巻末技術資料_E_1C_cs6_x4.indd 372020/04/17 8:57Technical InformationGas MetersVarious Auxiliary EquipmentTechnical DocumentsControllers /Shutoff ValvesAlarmsClassi-cationItemOperating conditionsEvent displayFlow rate shutoffTotal maximum ow rateover shutoffThe total gas consumption of the combustion appliances at the installation site exceeds the specied shutoff value ⇒ UH6:10.8 m3/hQIndividual maximum ow rateover shutoffThe gas ow rate increases, if there is an abnormally large increase in the ow rate, compared to the appliance with the largest consumption among the combustion appliances at the installation site ⇒ UH6:8.4 m3/HKSafety durationover shutoffThe operating time of the combustion equipment is abnormally longThe gas ow exceeds the time limit without any uctuation in the gas ow rateJBackow detection shutoffBackow exceeding the specied value is detectedRWith ow during shutoffshutoffThe ow rate is detected in the “ガス止” (Gas Stop) mode due to some eventPre-shutoff event display After 20 times shutoff outputAlternate display with ■Recovery leak check shutoffA shutoff valve that has been shut down is recovered and a pressure drop is detected, indicating that there is a leakPre-shutoff event displayOutside sensor shutoffAlarm shutoffThe alarm detects a leak and a signal is inputASeismic isolationThe seismic sensor detects an earthquake with a seismic intensity of more than 5GPressure drop shutoffThe pressure value drops below the set value (value set upon request)PPressure rise shutoffThe pressure value rises below the set value (value set upon request)OOther shutoffSensor error shutdownThe ultrasonic sensor becomes abnormal • Sensor error shutoff (resettable): “ガス止” (Gas Stop) is lit • Sensor error shutoff (not resettable): “ガス止” (Gas Stop) ashesXTest shutoffThe shutoff valve is instructed to close by a magnetT(within 40 seconds)Shipping mode40 seconds after test shutoff (plugged state)BlankNormal battery voltagedrop shutoffThe battery voltage checked periodically drops below the prescribed value twice in a row • Normal battery voltage drop shutoff (resettable): “ガス止” (Gas Stop) is lit • Normal battery voltage drop shutoff (not resettable): “ガス止” (Gas Stop) ashesVContinuous battery voltage drop shutoff The battery voltage checked normally drops below the prescribed value twice in a rowY/VCenter shutoffThe shutoff valve is “Closed” by center communicationCDate/time designation centershutoffThe specied date and time that you want to perform center shutoff by center communicationis reachedCShutoff after release • A message to cancel test shutoff by center communication is received in the test shutoff or shipping mode • A message to cancel center shutoff is received during a center shutoffDInner pipe leak alarmA minor leak is detected between the meter outlet and the combustion appliance and a minute gas ow rate is observed for 30 consecutive daysNAlarm / displayRecovery leak check displayDisplay during gas meter recoveredLNormal battery voltage low alarm (Before successful communication call)The battery voltage drops below the specied valueVNormal battery voltage low alarm(After successful communication call)The battery voltage drops below the specied valueVBattery voltage dropgrace period displayThe predetermined conditions are satised after the battery voltage drop shutoff(After a shutoff, the information is displayed for 7 days if special operations are carried out within 14 days)VSensor error alarmThe ultrasonic sensor becomes abnormal(In this case, the indicator value ashes)XWaiting for gain to drop after recovery is nishedAppears until status returns to the normal measurement mode at the end of recovery due to sensor error shutoffXData write errorThe indicator value is not written normally in the non-volatile scalemLine A short circuitdisplayA short circuit occurs due to incorrect connection to Line A etc.EUH Meter Event Display40UH Meter Event Display都市ガス総カタログ_巻末技術資料_E_1C_cs6_x4.indd 402020/04/06 15:28Mounting exampleMounting example[Location for Installing Gas Leak Alarms]Methods for installing gas leak alarm are set forth in Article 3 of the Gas Business Law “Directive Governing the Planning and Installation Method of Gas Leak Alarm Equipment”. Install the alarm on the wall or in the ceiling of the same room as the combustion appliance at a horizontal distance of less than 8 m from the combustion appliance, and at a location where the lower edge of the alarm is less than 22 to 30 cm from the ceiling surface.50 cm50 cmWithin 8 mSuspended partition wall more than 40 cmWithin 22 to 30 cmRange unsuitable for installationFloorGas stoveGas cock● A well-ventilated place such as near a ventilation fan, air supply port or door. ● A place exposed to drafts.● Below a suspended partition wall of more than 30 cm (including alarm). ● A place separated by a suspended partition wall of more than 40 cm.● Places directly exposed to exhaust gases, steam or soot from combustion appliances and the steam of cooking alcohol.● The upper sections of cupboards or the like.ProhibitedProhibitedProhibitedProhibitedMore than 30 cm More than 40 cmCeiling surface50 cm50 cmWithin 8 mRange unsuitable for installationFloorGas cockCeiling surfaceGas stove■ Wall-mounted alarm installation example■ Ceiling-mounted alarm installation exampleWhen mounting on a gypsum boardWhen mounting on a wall other than a gypsum boardWhen mounting on an existing mounting plate■ Examples of places where it should not be installed■ Mounting of alarm50 cm50 cmWithin 8 mSuspended partition wall more than 40 cmWithin 22 to 30 cmRange unsuitable for installationFloorGas stoveGas cock● A well-ventilated place such as near a ventilation fan, air supply port or door. ● A place exposed to drafts.● Below a suspended partition wall of more than 30 cm (including alarm). ● A place separated by a suspended partition wall of more than 40 cm.● Places directly exposed to exhaust gases, steam or soot from combustion appliances and the steam of cooking alcohol.● The upper sections of cupboards or the like.ProhibitedProhibitedProhibitedProhibitedMore than 30 cm More than 40 cmCeiling surface50 cm50 cmWithin 8 mSuspended partition wall more than 40 cmWithin 22 to 30 cmRange unsuitable for installationFloorGas stoveGas cock● A well-ventilated place such as near a ventilation fan, air supply port or door. ● A place exposed to drafts.● Below a suspended partition wall of more than 30 cm (including alarm). ● A place separated by a suspended partition wall of more than 40 cm.● Places directly exposed to exhaust gases, steam or soot from combustion appliances and the steam of cooking alcohol.● The upper sections of cupboards or the like.ProhibitedProhibitedProhibitedProhibitedMore than 30 cm More than 40 cmCeiling surface50 cm50 cmWithin 8 mSuspended partition wall more than 40 cmWithin 22 to 30 cmRange unsuitable for installationFloorGas stoveGas cock● A well-ventilated place such as near a ventilation fan, air supply port or door. ● A place exposed to drafts.● Below a suspended partition wall of more than 30 cm (including alarm). ● A place separated by a suspended partition wall of more than 40 cm.● Places directly exposed to exhaust gases, steam or soot from combustion appliances and the steam of cooking alcohol.● The upper sections of cupboards or the like.ProhibitedProhibitedProhibitedProhibitedMore than 30 cm More than 40 cmCeiling surface50 cm50 cmWithin 8 mSuspended partition wall more than 40 cmWithin 22 to 30 cmRange unsuitable for installationFloorGas stoveGas cock● A well-ventilated place such as near a ventilation fan, air supply port or door. ● A place exposed to drafts.● Below a suspended partition wall of more than 30 cm (including alarm). ● A place separated by a suspended partition wall of more than 40 cm.● Places directly exposed to exhaust gases, steam or soot from combustion appliances and the steam of cooking alcohol.● The upper sections of cupboards or the like.ProhibitedProhibitedProhibitedProhibitedMore than 30 cm More than 40 cmCeiling surfaceMounting baseAlarm bodyTurn clockwiseMounting baseAlarm bodyTurn clockwiseDouble-sided tapeWood screw (16 mm in length)HookPlaster board pin ①Plaster board pin ②Catch on the hook then tighten with the wood screw.Catch on the top, then press into the protrusion at the bottom.If the alarm is tilted, use the cord clamp.Double-sided tapeWood screw (16 mm in length)HookPlaster board pin ①Plaster board pin ②Catch on the hook then tighten with the wood screw.Catch on the top, then press into the protrusion at the bottom.If the alarm is tilted, use the cord clamp.Double-sided tapeWood screw (16 mm in length)HookPlaster board pin ①Plaster board pin ②Catch on the hook then tighten with the wood screw.Catch on the top, then press into the protrusion at the bottom.If the alarm is tilted, use the cord clamp.* Install the alarm at a distance of more than 1.5 m away from ventilation ports and air outlets of air conditioners, etc.* Keep the alarm more than 40 cm away from suspended partition walls or beams.* If the area is partitioned by a suspended partition wall in which the ceiling surface protrudes out by more than 40 cm, install the alarm on the combustion appliance side rather than the suspended partition wall.● Installation in a bathroom ... Do not install in a bathroom or in a place where water splashes or where water may drip onto it as this may cause electric shock or electrical failure.● For wall-mounted alarm● For ceiling-mounted alarmHow to Install Gas Leak Alarms① Remove the release liner from the double-sided tape on the back of the attachment.② Press the attachment against the wall and insert the attachment’s plaster board pin ①. At this time, press against the head of the plaster board pin with a commercially available plaster board pin insertion tool or a hard part of the handle of a screwdriver, etc., to insert the pin up to its root.③ Catch the alarm on the attachment’s hook. In a position in which the alarm is not tilted, insert the plaster board pins on the left and right sides of the attachment to fasten. CAUTION● Be very careful not to stick the pin into your nger. ● To maintain the mounting strength, insert the pins up to their roots. ● If a pin is loose, move the mounting position slightly then re-attach the pin.If the wall is concrete, drill a hole with a vibration drill, drive in a curl plug (commercially available) and use a wood screw.① Screw the wood screw halfway into the wall.② Catch the alarm’s hook on the wood screw.③ Tighten the wood screw to fasten the alarm.When installing on an existing mounting plate, such as when updating the installation, catch the hook at the top of the mounting plate to the back surface of the alarm, then press the alarm into the xing protrusion at the bottom of the mounting plate to fasten the alarm in place.
元のページ ../index.html#35