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<br /> � 3-17.3.I Wet-Pipe Systems. The alarm apparatus for a €properly aligned and so installed as no[ to get out of ad- �
<br /> wet-pipe system shall cansist of a listed alarm check valve .' �ustmenc. All piping ta these devices shall.be galvanized
<br /> or other listed waterflow detecting alarm device with the or hrass or other approved corrosion-resistant material of !
<br /> j� necessary attachments required to give an alarzn, - . ' a size not less than �j in. (1.9 cm}, ;
<br /> 3-17.3.2 3?ry-Pipe Systems. The alarm apparatus far a 3-17.6 Alarm Attachments — High-rise Buildings. �
<br /> � d i e s stem shall cansist of listed alarm attachments When a fire must be foughc internaiiy due to the height �
<br /> ry P P y of a buildin che foIlowin additional aiarm su ervision
<br /> ' to the dry-pipe vaive. When a dry-pipe vaive is lacaced on g� b P
<br /> i ; the system side of an alarm valve, the actuating device of must be provided: �
<br /> the alarms for the dry-pipe valve may be connected to the (a) When each sprinkler system an j each flaor is I
<br /> alarms on che wec-pipe system. equ�pped with a separace waterflaw device, it shall be i
<br /> � connected to an alarm system in such a manner thac �
<br /> = 3-17.3.3* Preaction and Deluge Systems. In addition operation of one sprinkler wiil actuate the aiarm system, j
<br /> to the waterflow alarms required for systems having more and the location of the operated flow device shall be in- �
<br /> � than 20 sprinklers, all deluge and preaction systems shall dicated an an annunciator andlor regiscer. The annun- I
<br /> � be provided wich listed alarm attachments actuated by ciator or register shall be Iocated at grade level at the nor- ,
<br /> the deteetion system. mal point of fire department access, at a constantly at- �
<br /> �ended building security control cencer,� or both loca- I
<br /> 3-17.3.4� Waterflow alarm indicacors (paddie-type} cions. t �
<br /> shall not be installed in dry-pipe, preaction, ar deluge Exce�tzon: YVhen the lacatzon mathin� the pratected ''
<br /> systems. , buitdtngs where su,�ervisory ar alar�n sig als are recezved �
<br /> u not under eonstant su�iervzszon by quatzfied�iersonnel j
<br /> 3-17.4 Attachments — General. tn the emjiloy of the owner, a connect:on shall be j�ro- j
<br /> � 3-17,4,1� An alarm unit shali indude a listed rraded to transmzt a sz�*nal to a remote oricentral statzon. i
<br /> ' � mechanical alarm, horn or siren, or a listed weatherproof (b} A distinct troubie signai shall belprovided to in-�
<br /> electric gong, bell, horn, or siren. dicate a candition that will impair the saeisfactory opera-�
<br /> tion of the sprinkler system This shall include but not be'
<br /> 3-17.4.2* Outdoor mechanical or electrically aperated limited to, monitoring controI valves, building tempera-+
<br /> heils shali ]ie of weatherproof and guarded type. tures, fire pump power supplies and running canditions,l
<br /> ' and water tank levels and temperatures. Pressure supervi-�
<br /> ; 3-19.4.3 On each alarm check valve used under condi- sion shall also be provided on pressure (anks.
<br /> tions af variable water pressure, a retarding device shall � �
<br /> be installed. Valves shaIl be provided in the connections 3-17.'7 Attachments— Electrically Operated. i
<br /> � to retarding deviees, to permit repair or removal without �` � I
<br /> shutting off sprinklers; these valves shalI be.so arranged 3-17.7.1 Electricaliy aperated alarm aetachments form�
<br /> ing part of an auxiliary, centraI scatio�i, proprietary, or
<br /> � that they may be locked or seaIed in the open position. remote stacion signaling system shalI be installed in aceor�
<br /> +�, dance with the following applicable NFP�. standards. i
<br /> = 3-1?.4.4 Alarm vaives, dry-pipe, preaction, and deluge i
<br /> { � vaives shall be�tted with an alarm bypass test connection (�} NFPA '71,St¢ndard far the Installation, Mazntei
<br /> ' � for an eleciric alarzn switch, water-motor gong, or both. nance, and Use of�'entral Stataon Sign¢lZng Systems, �
<br /> This pipe connection shail be made on the wacer supplv (b) NFPA 72B, Standard for the Installation, Mainte�
<br /> ; � side of the,system and pravided with a cantrol valve and nance, and Use of Auxilzary Protectzve Sagndlzng Systems�,
<br /> drain for che alarm piping. A check valve shall be in- (c} NFPA 72C, Standard for the Installatzon, tYlaante,'-
<br /> stalled in the pipe connecuon from the intermediace nance, and Use of Remote Statzon Protectzve Szgnaling
<br /> � chamber of a dry-pipe valve. Systems, �
<br /> � 3-17.4.5 �A control valve shall be installed in connection (�} NFPA 72D, Standard for the Installatzon, Maznte-
<br /> with a pressnre-type contactor or water-motor-operated nance, and Use of Pro�artetarV Protectzve Szgnaling
<br /> alarm deuices, and such valves shall be of the type that Systems. �
<br /> will cleariy�indica[e whether they are open or closed and �
<br /> be so cons'tructed that they may be locked or sealed in the 3-�fi�'�•�� The circuits of electricat alarm attachmencs
<br /> open posiiion. The concroi valve for the retarding forming part of a lacal sprinkler wacerflow alarm syscelm
<br /> chamber�on alarm check valves of wet-pipe systems mav need not be supervised. i
<br /> be accepted as comptying with this paragraph. Exceptton: If the local s�irznkler waterflow alarm svstem
<br /> , j � as�¢rt of¢requzred Zacal fire rzlarm,system, it shall be zn-
<br /> E 3-17.5* Attachments — i�Iechanically tJpezateci. For stalled in accordance wzttt NFP.4 72.4, Standard for the
<br /> i all types� of sprinkler systems employing water-motor- Installat2on, Mazntenance, and Zlse of Lacal Protectzve
<br /> operated;,alarms, an approved 3/-in. {1.9-cm} strainer Signaltng Systems. �
<br /> � shall be �insralled at che alarm ouelet af the warerflow �
<br /> detectingidevice except that when a retarding chamber is 3-17.7.3 Waterflow detecting devices, inciuding the
<br /> used in connectian with an alarm valve, the strainer shall associaced alarm c�rcuits, shail be tested by an actual
<br /> � be located+'at the outlet of che retarding chamber unless waterflow through use of a test connecuon. (See 3-17 8 }
<br /> the retarding chamber is provided with an appraved in-
<br /> tegral szrainer in its autlet. Water-motor-aperated de- 3-17.7.4 Outdoor eleccric alarm devices shaII be of a
<br /> ; vices shall be protected from the weather, and shail be type speci�cally listed for oucdoor use, and the outdoor
<br /> �' , t987 Edition
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