Deterctor de Fuego

12.01.7

FIGURE 1 READY FIGURE 2 SLOW FIRE FIGURE 3 FAST FIRE

DETECT-A-FIRE®

Detection and Release Devices

FEATURES• Repeatable - resets itself, nothing to replace,

testable• Rugged - withstands shock and vibration• Versatile - offers various temperature settings• Durable - long lasting stainless steel shell• Economical - wide spacing, reduces

installation cost• Factory set and the internal contact area is

hermetically sealed in stainless steel

APPLlCATlONS• Protection of schools, factories, offices,

libraries, etc.• Paint spray booths• Range hoods

DESCRIPTIONDETECT-A-FIRE units are the "heart" of many FireProtection Systems. These highly reliable devices havebeen a standard of the industry for over 45 years. Manythousands of these units are now in use controlling therelease of extinguishants such as clean agents, C02,water, or dry chemicals. In some systems the device isused as an ALARM device, to sense overheat or fire,and alert personnel. In other systems, it is used as aRELEASE device, to sense fire and actuate fire attacksystems.

DETECT-A-FIRE units have met with wide acceptancebecause they are designed with RATE COMPENSATION.This provides a unique advantage over both fixed tem-perature and rate-of-rise types of detectors becauseonly the DETECT-A-FIRE unit accurately senses thesurrounding air temperature regardless of the firegrowth rate. At precisely the predetermined dangerpoint, the system is activated.

Fixed temperature detectors must be completelyheated to alarm temperature and therefore a disastrouslag in time may occur with a fast rate fire. Rate-of-risedevices, on the other hand, are triggered by the rate ofincrease in ambient temperature and are subject tofalse alarms caused by harmless, transient thermalgradients such as the rush of warm air from processovens.

The secret of the unit's sensitivity is in the design(Figure 1). The outer shell is made of a rapidly expandingalloy which closely follows changes in surrounding airtemperature. The inner struts are made of a lowerexpanding alloy. Designed to resist thermal energyabsorption and sealed inside the shell, the struts followtemperature changes more slowly.

A slow rate fire (Figure 2) will heat the shell and strutstogether. At the "set point," the unit will trigger, actuatingthe alarm or releasing the extinguishant.

A transient rush of warm air up to 40F˚/min. mayexpand the shell, but not enough to trigger the unit. Byignoring transient warm air excursions, the DETECT-A-FIREunit virtually eliminates false alarms prevalent withrate-of-rise devices.

If a fast rate fire (Figure 3) starts, the shell will expandrapidly. The struts will close, actuating the alarm orreleasing the agent. The faster the fire rate of growth,the sooner the DETECT-A-FIRE unit will react.

12.01.7 7/11/2000 8:01 AM CP HIRES_3:Dont Archive:•12.01.7:

Click to view/purchase products online at Gaumerwww.gaumer.com 800.460.5200 713.460.5200

http://www.gaumer.com/ProductFilter.pasp?cat=controlcomponentfenwal27000

F˚gnitteS

F˚ecnareloT

SGNICAPS )teefni(AETONeeS

LU MF CLU roloCgnidoC

041061091522572523063054006527

8-/7+8-/7+8-/7+8-/7+

01±01±01±51±02±52±

0552055252055252A/NA/N

05520505050505050505

52525252525252525252

kcalBkcalBetihWetihWeulBdeRdeRneerGegnarOegnarO

HORIZONTAL DETECT-A-FIRE-UNITSHorizontal detectors are designed for locations whereappearance is a factor. The attractive, functional design lendsphysical protection of the unit while making it suitable forcommercial, industrial, mercantile and public buildings,institutions and ships in non-hazardous locations (thoseclassified as "ordinary" under the National Electric Code).Flush mounted units are designed to fit standard 4" octagonalelectrical boxes and surface mounting units are designed tomount directly on ceilings or on 4" electrical junction boxes.Canadian Electrical Codes requires mounting only to anelectrical junction box.

VERTICAL DETECT-A-FIRE-UNITSVertical detectors are designed for use in both "ordinary" or"hazardous" locations. For "ordinary" use, they may bemounted to any approved junction box with 7/8" diameteropening by using 1/2-14 NPT mounting nuts. The device maybe wired in or out of conduit, depending on localpreference and codes. Four leadwires are provided onnormally open vertical units (that close on temperature rise),per UL requirement, to facilitate supervision of system wiring.Instruments are Underwriters Laboratory and UnderwritersLaboratory of Canada listed and Factory Mutual approved forhazardous locations, when mounted in a suitable fitting.

MOUNTINGDETECT-A-FIRE units are not position sensitive. Horizontaland vertical detectors refer to the most common mountingconfiguration for that unit. However, each type can be mount-ed either horizontally or vertically depending on the applica-tion and installation requirements.

HORIZONTAL DETECT-A-FIRE-UNITS

suodrazaHsnoitacoL

rotceteDepyT

rofderiuqeRgnittiFsgnitsiLLCU&LUlavorppAMFdna

spuorG,IssalC;DdnaC,B,AspuorG,IIssalC

;GdnaF,E

220-02172X-21020-12172X-21300-02082X-21500-12082X-21

aotrotcetedtnuoMgnittifdetsilylbatius

htiwecnadroccanicirtcelElanoitaN

lacolro/dnaedoCgnivahytirohtua

.noitcidsiruj

spuorG,IssalC;DdnaC,B

spuorG,IIssalCGdnaF,E

000-02172X-21000-12172X-21000-12082X-21

NOTE: Only units with stainless steel shell and head are approved for Class I, Group Alocations.

NOTE A: Spacings shown are distances between units on smooth ceilings, the distances frompartitions or walls would be half that shown. Authority having LOCAL jurisdiction should beconsulted before installation.

NOTE B: Temperature preset at factory only. Special settings available upon request. Consultfactory or Fenwal Representative for additional information.

NOTE C: In applications where corrosion is suspect, care should be taken to protect theDETECT-A-FIRE unit to realize optimum performance and maximum life. Consult factory for sug-gestions.

NOTE D: Up to 375˚F-#18 AWG Teflon insulated wire used on units.Above 375˚F-#16 AWG TGGT insulated wire used on units.

Specifications subject to change without notice.UL of Canada labeling available upon request.Although incandescent lamps are considered resistive, their inrush current is 10-15 times theirsteady current. Do not exceed ratings.

Flush Mounting Unitfor Concealed Wiring

Surface Mounting Unitfor Exposed Wiring

12-X27020-00012-X27021-000

12-X27020-00112-X27021-001

CONSTRUCTIONStainless steel shell sensing element. Cold rolled steelmounting facility. Off-White finish.

TEMPERATURE RATING(Suggested setting a minimum of 100F˚ above ambient)

SPECIFICATIONS




VERTICAL DETECT-A-FIRE-UNITS

For Concealed and Exposed Wiring(Hexagonal Head)

CAV521spmA0.5CDV521spmA5.0

12-X27121-00012-X27121-020

12-X27120-00012-X27120-022

12-X27121-00012-X27121-020

CONSTRUCTION-000 units have a stainless steel sensing shell and abrass mounting head. -002 and -020 units are allType 300 stainless steel.

12-X28020-003 12-X28021-00012-X28021-005

CONSTRUCTION-000 units have a stainless steel sensing shell and abrass mounting head. -003 and -005 units are allType 300 stainless steel.

VERTICAL DETECT-A-FIRE-UNITS

For Concealed and Exposed Wiring(Coupling Head)

ledoM

)F˚(gnitteSerutarepmeT

041 061 091 522 572 523 063 054 006 527

000-02072X-21 X X

100-02072X-21 X

000-12072X-21 X X

100-12072X-21 X X

000-02172X-21 X X X X

000-12172X-21 X X X X X X X X X X

500-12082X-21 X X

X

Indicates a stock unit

STOCKED MODELS AND TEMPERATURE SETTINGS(Suggested setting a minimum of 100F˚ above ambient)




Figure 4. Dust Cover ApplicationThis is a typical application of DETECT-A-FIRE units

used as a release device to actuate a complete firesuppression system. In this application DETECT-A-FIREunits are mounted in a Dust Collector to sense an overheatcondition and release a clean agent extinguishant.

MODIFICATIONS12-99202X-XXX, Extended lead wires, Series 12-X271XXand Series 12-X28XXX only.12-992012-XXX, Fluorocarbon coating, Available on27120-022, 27121-020, 28020-003, 28021-005 models only(500˚F max.).

AGENCY LISTINGSFenwal DETECT-A-FIRE units are UL and ULC listedand FM approved as fire detection thermostats (close ontemperature rise) and as releasing devices (open ontemperature rise).

Figure 5. Typical ceiling installation of a horizontalDETECT-A-FIRE model. Here it is used in combination witha sprinkler system to detect overheat and actuate an alarm.

ESIRFOETAR

eciveDfoepyTrednU

.nim/˚F01neewteB

.nim/˚F04-01revO

.nim/˚F04

etaRlawneFdetasnepmoC

ERIF-A-TCETEDtinU

TSRIF TSRIFDNOCES

detcelestatublevelnoitcetorp

dexiFerutarepmeT

DNOCES DNOCES DRIHT

esiR-fo-etaR etarepotonlliWdexifsselnuerutarepmet

tatnemelppussiF˚561

neht,dedivorpniDRIHTsiti

ecneuqes

etarepotonlliWdexifsselnuerutarepmet

tatnemelppus,dedivorpsiF˚561

ecneuqes

TSRIFeslafaebyamtub

mrala

then it is THIRD in

This chart shows three categories of fire detection devicesand their relative response levels for reaction to threedifferent rate-of-rise conditions. Statistics indicate that 97%of all fires fall within these categories.

YCNEGA REBMUNELIF NOITACOL

LULU

CLUMFMFLULU

294S01391EE-143SC

EA.OH3VO.I.J203710142S99598E

OrdinaryHazardousOrdinary and HazardousHazardousOrdinaryOrdinary (600 & 725˚F)Hazardous (600 & 725˚F)

HOW TO ORDER

12-X27121-000-225

Temperature SettingType

1. Select the DETECT-A-FIRE model from specifications on pages 2 and 3.

2. Refer to temperature rating chart on page 2, selecttemperature setting required and add this number to base catalog number.Example: Vertical DETECT-A-FIRE set to close at 225˚F.

12.01.7 2/00 ©2000 Kidde-Fenwal, Inc. Printed in U.S.A. CP

KIDDE-FENWAL, INC.

400 MAIN STREET, ASHLAND, MA 01721

TEL: (508) 881-2000 FAX: (508) 881-6729

www.fenwalcontrols.com

The literature is provided for informational purposes only. KIDDE-FENWAL, INC.assumes no responsibility for the products suitability for a particular application.

The product must be properly applied to perform as described herein.

If you need more information on this product, or if you have a question, contactKIDDE-FENWAL, INC., Ashland, MA 01721 (508) 881-2000.




Deterctor de Fuego

Documents

Transcript of Deterctor de Fuego