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HOl'SEHOLD FIRE WAR:'I;I:'I;(; EQl'Il'~IE~T 72-31 2-4.5.5 Each electrical lire warning system and each single station smoke detector shall have an integral test means to allow the householder to check the sntem and the sensitiv- ity of the detector(s). . 2-4.6 Monitoring Integrity of Installation Conductors. A.II means of interconnecting initiating devices or notifica- tion appliances shall be monitored for the integrity of the interconnecting pathways up to the connections to the device or appliance so that the occurrence of a single open or single ground fault. which prevents normal operation of the system. is indicated by a distinctive trouble signal. I Exception No.1: Condudors con1U'cting multiple station a/anns, prol.;ded a single fault on the wiring cannot prevent single station operation of an)' of the interconnected deuctors. EXCl'ption ,\"0. 2: Circuits exlmding from single or multiple sta- I tion alarms to required remote notification appliances, provided operation of the test feature on any deuctor causes all C0111U'cted appliances to actimte. 2-4.7 Combination System. 2-4.7.1 Where common wiring is employed for a combina- tion system. the equipment for other than the fire warning signaling system shall be connected to the common wiring of the system so that shon circuits. open circuits, grounds, or any fault in this equipment or interconnection between this equipment and the fire warning system wiring does not interfere with the supervision of the fire warning system or prevent alarm or trouble signal operation. 2-4.7.2 In a firelburglar system. the operation shall be as follows: (a) A fire alarm signal shall take precedence or be deady recognizable over any other signal even when the nonfire alarm signal is initiated first. (b) Distinctive alarm signals shall be used so that fire alarms can be distinguished from other functions such as burglar alarms. The use of a common sounding appliance for fire and burglar alarms shall be permitted where distinc- tive signals are used. (Set 2-2.2.2.) 2-4.8 Low Power Wireless Systems. Household fire warn- ing systems utilizing low power wireless transmission of sig- nals within the protected household shall comply with the requirements of Section 3-13. Exception: Paragraph 3-13.4.5 shall not apply. 2-4.9 Supervising Station Systems. 2-4.9.1 Any communications method described in Section 4-5 shall be permitted for transmission of signals from house- hold fire warning equipment to a supervising station. All of the provisions of Section 4-5 shall apply. as appropriate. Exception No. J: Only 0111' telePhone li1U'sluzll be required for one-. and two-family residences. Exception 10.'0. 2: Each D.-4CT shall be required to be programmed to call a single DACR number on1.". Exception No.3: Each DACT seT'!'ing a one- or twojami1." resi- dence shall transmit a test signal to its associated reeeiver at least monthly. 2-4.9.2* On receipt of an alarm signal from household fire warning equipment, the supervising station shall immedi- ate'" (within 90 seconds) retransmit the alarm to the public fire communications center. Exreption: The supm.ising station shall be pamitted to contact the residence for verificatiotl of an alonll condition and, where acrept- able assu ranee is provided within 90 seconds that the fire service is not nuded. retransmission of an a/ann to the public seroice fire com- munications crour sholl not be required. 2-5 Installation. 2.5.1 General. 2.5.1.1 General Provisions. I 2-5.1.1.1* All equipment shall be installed in a workman- like manner. 2-5.1.1.2 All devices shall be so located and mounted that accidental operation is not caused by jarring or vibration. 2-5.1.1.3 All installed household fire warning equipment shall be mounted so as to be supported independently of its attachment to wires. 2.5.1.1.4 All equipment shall be restored to normal as promptly as possible after each alarm or test. 2-5.1.1.5 The supplier or installing contractor shall pro- vide the owner with: (a) An instruction booklet illustrating typical installation layouts. (b) Instruction charts describing the operation, method and frequency of testing, and proper maintenance of house- hold fire warning equipment. (c) Printed information for establishing a household emergency evacuation plan. (d) Printed information to inform owners where they can obtain repair or replacement service. and where and how pans requiring regular replacement (such as batteries or bulbs) can be obtained within 2 .....eeks. 12-5.1.2 Interconnection of Detectors or Multiple Station Alarms. (a) Where the interconnected wiring is unsupervised, no I more than 18 multiple station alarms shall be intercon- nected in..a multiple station configuration. (b) Where the interconnecting wiring is supervised. the number of interconnected detectors shall be limited to 64. I 2-5.1.2.1* Interconnection that causes other alarms to sound shall be limited to an individual family living unit. Remote annunciation from single or multiple station alarms shall be permitted. 12-5.1.2.2 No more than 12 smoke alarms shall be intercon- nected in a multiple station connection. The remainder of the alarms shall be permitted to be of other types. 2-5.2* Detector Location and Spacing. 2-5.2.1* Smoke Detectors 2-5.2.1.1 Smoke detectors in rooms with ceiling slopes greater than I ft in 8 ft (1 01 in 8 01) horizontally shall be located at the high side of the room. 1996 Edition