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A zoned-type fire alarm system, with zones not exceeding 20,000 square feet or serving more than one floor, shall be required under any one of the following conditions:
(a) When the building exceeds four stories in height;
(b) When any side of the building is 200 feet or more in length;
(c) When the system has more than eight manual alarm-sending stations;
(d) When more than ten automatic detectors are connected to the standard fire alarm system, unless the alarm system serves only a Type III school occupying only the first floor of a building;
(e) When the ground floor area of the building exceeds 20,000 square feet.
(Prior code § 91-116; Amend Coun. J. 3-15-91, p. 31145)
An annunciator, where required by this Code, shall be placed in a conspicuous location either inside or outside of and within 20 feet of the main entrance to the building. The annunciator shall indicate the zone from which an alarm has originated by means of a translucent rectangle which is electrically illuminated from behind when an alarm is received from the zone. The zone shall be identified by opaque lettering on the rectangular indicator which describes the location of the zone within the building. The lettering shall not be less than one- fourth inch in height. Provided however, that the annunciator may indicate by means of a diagram of the building with the zones identified by a light on the diagram corresponding to the area served by the zone. The diagram used must meet with the approval of the fire commissioner.
A separate indicator shall be provided for each zone. When a sprinkler system is also installed in a building requiring a fire alarm annunciator, sprinkler waterflow alarms shall be provided with an indicator on the annunciator separate from other zones. Indication on the annunciator shall be continuous until manually reset.
(Prior code § 91-118; Amend Coun. J. 5-18-16, p. 24131, § 136)
Instruction cards describing in detail the code employed and specifying the exit or exits to be used in any emergency shall be posted in conspicuous locations in buildings equipped with a Class II standard fire alarm system as follows:
(a) In Institutional Buildings. At each sending station, at the head nurse's desk on each floor, at the telephone switchboard, in the general office, engine room and in rooms where attendants work or assemble;
(b) In Schools. At each sending station, in the auditorium, engine room and general office;
(c) In Hotels and Dormitories. At each sending station at the switchboard, in the office, engine room, workrooms and in public assembly rooms.
(Prior code § 91-119)
The supervising circuit shall be provided with a trouble bell arranged to ring continuously in case of energy failure, an open circuit or a ground in the fire alarm circuit. The trouble bell shall be located so that, in the opinion of the fire commissioner, it will be within audible range of some responsible person in the building. The trouble bell circuit shall be provided with a silencing switch in such a manner that the act of silencing the bell by operation of the switch automatically and positively transfers the trouble bell to a red lamp near the trouble bell. Immediately adjoining each trouble bell, there shall be a sign clearly identifying it as a trouble bell. Where a standard fire alarm system has more than one trouble bell, each identification sign required by this section shall also indicate the portion of the system connected to each bell.
(Prior code § 91-120; Amend Coun. J. 5-18-16, p. 24131, § 137)
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