©2003SystemSensor.Thecompanyreservestherighttochangeproductspecificationswithoutnotice.

A05-0953-002•10/03•#1169

Physical Specifications

Length:

14.5inches(36.8cm)

Width:

5inches(12.7cm)

Depth:

4inches(10.2cm)

Weight:

4.5lbs.(2.0kg)

OperatingTemperatureRange:

32ºto158ºF(0ºto70ºC)

StorageTemperatureRange:

–22ºto158ºF(–30ºto70ºC)

AirDuctVelocity:

500to4000ft./min.

OperatingHumidityRange:

10%to93%relativehumidity

Voltage:

24VAC/VDCor120/220VAC

Electrical Specifications

DH400ACDCIHT 4-wireionizationhigh-temperatureduct

smokedetector

1451DHHT

Replacementionizationhigh-temperature

sensorhead

ST-1.5

Metalsamplingtubeductwidths1′–2′

ST-3

Metalsamplingtubeductwidths2′–4′

ST-5

Metalsamplingtubeductwidths4′–8′

ST-10

Metalsamplingtubeductwidths8′–12′

P48-21-00

Endcapformetalsamplingtubes

APA451

AnnunciatorwithpiezoalarmandpowerLEDs

DH400OE-1

WeatherproofOutdoorEnclosure

Ordering Information

System Sensor Sales and Service

System Sensor Headquarters

3825OhioAvenue

St.Charles,IL60174

Ph:800/SENSOR2

Fx:630/377-6495

www.systemsensor.com

System Sensor Canada

Ph:905.812.0767

Fx:905.812.0771

System Sensor Europe

Ph:44.1403.891920

Fx:44.1403.891921

System Sensor in China

Ph:86.29.8832.0119

Fx:86.29.8832.5110

System Sensor in Singapore

Ph:65.6273.2230

Fx:65.6273.2610

System Sensor – Far East

Ph:85.22.191.9003

Fx:85.22.736.6580

System Sensor – Australia

Ph:613.54.281.142

Fx:613.54.281.172

System Sensor – India

Ph:91.124.637.1770x.2700

Fx:91.124.637.3118

System Sensor – Russia

Ph:70.95.937.7982

Fx:70.95.937.7983

RTS451KEY

Remoteteststationwithkey

RTS451

Remoteteststation

PA400W

Piezosounder(white)

PS24LOW

Add-onstrobe(white)

RA400Z

RemoteannunciatoralarmLED

CRT400

Ioncoverremovaltool

F36-05-00

Replacementairfilters(twoperpackage)

MOD400R

Sensitivitytestmodule

M02-04-00

Testmagnet

RS14

Ionreplacementscreen

A2650-01

Replacementinstallationkit(mountinghardware)

PowerSupplyVoltage

20-29VDC

24VAC50-60Hz

120VAC50-60Hz

220/240VAC50-60Hz

CURRENTREQUIREMENTS(USINGNOACCESSORIES)

Max.standbycurrent

25mA

35mARMS

20mARMS

20mARMS

Max.alarmcurrent

95mA

55mARMS

55mARMS

30mARMS

CONTACTRATINGS

Alarminitiationcontacts(SPST)

2.0A@30VAC/DC(0.6powerfactor)

Alarmauxiliarycontacts(DPDT)

10A@30VDC

10A@250VAC

Troublecontacts(SPST)

0.3@32VDC(resistive)

Accessory Current Loads at 24 VDC

Device

Standby

Alarm

AP451

12mAmax.

30mAmax.

PA400W

0mAmax.

15mAmax.

RA400Z

0mAmax.

7mAmax.

RTS451

0mAmax.*

8mAmax.

RTS451KEY

12mAmax.*

8mAmax.

Model

Description

*NOTE:Wheninitiatinganalarm,theRTS451andRTS451KEYrequire103mAinalarm.Nominalstandby

currentis0mA.Alarmcurrentis8mAmaximumwhentestmagnetisremoved.

NOTE:Accessoriesareonlyratedto120°Fandmustbeinstalledindoors.

The air duct smoke detector shall be a System Sensor

Model DH400ACDCIHT Series Duct Smoke Detector.

The detector shall be UL listed per UL S911, standard

for Smoke Detectors for Duct Applications, specifically

for use in air handling systems. The detector shall oper-

ate at air velocities from 500 feet per minute to 4000

feet per minute. The detector shall have an operating

temperature range of 32˚F to 158˚F. The detector housing

shall be equipped with an integral mounting base capable

of accommodating ionization detector heads. It shall be

capable of local testing via magnetic switch or remote test-

ing using the RTS451KEY or RTS451 Remote Test Station.

The duct detector housing shall incorporate an airtight

smoke chamber in compliance with UL S911. The housing

shall be capable of mounting to rectangular or round ducts

up to 12′ wide without adapter brackets. An integral filter

system shall be included to reduce dust and residue effects

on detector and housing, thereby reducing maintenance

and servicing. Sampling tubes shall be installed after the

housing is mounted to the duct by passing through the duct

housing. Terminal connections shall be of the strip and

clamp method suitable for 14–18 AWG wiring.

ANYCOMBINATIONOFACCESSORIESMAYBEUSEDSUCHTHATTHE

GIVENCURRENTLOADSTOTAL:

100mAORLESSINTHESTANDBYSTATE,

150mAORLESSINTHEALARMSTATE.

Architect/Engineer Specifications