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D500-08-00 1 I56-512-07R

DH500 Intelligent Air Duct Smoke

Detector Housing

INSTALLATION AND MAINTENANCE INSTRUCTIONS

3825 Ohio Avenue, St. Charles, Illinois 60174

1-800-SENSOR2, FAX: 630-377-6495

Before Installing

Please thoroughly read System Sensor's Guide for Proper

Use of Smoke Detectors in Duct Applications (I56-473-XX),

which provides detailed information on detector spacing,

placement, zoning, wiring, and special applications. Copies

of this manual are available from System Sensor. NFPA

Standards 72 and 90A should also be referenced for

detailed information.

NOTICE: This manual should be left with the owner/user

of this equipment.

IMPORTANT: This detector must be tested and maintained

regularly following NFPA 72 requirements. The detector

should be cleaned at least once a year.

General Description

An HVAC system supplies conditioned air to virtually every

area of a building. Smoke introduced into this air duct sys-

tem will be distributed to the entire building. Smoke detec-

tors designed for use in air duct systems are used to sense

the presence of smoke in the duct.

The DH500 Air Duct Detector Housings are used with

System Sensor’s intelligent model 1551 ionization detector

head and model 2551 photoelectronic detector head. These

two principal smoke detection methods are combined with

an efficient housing design that samples air passing through

a duct and allows early detection of a developing hazardous

condition. When sufficient smoke is sensed, an alarm signal

is initiated at the fire control panel monitoring the detector,

and appropriate action can be taken to shut off fans and

Specifications

Length: 14.5 inches (36.7 cm)

Width: 5 inches (12.7 cm)

Depth: 3.5 inches (8.9 cm)

Weight: 2.8 lbs. (1.1 kg)

Operating Temperature Range: 32° to 120°F (0° to 49°C)

Operating Humidity Range: 10% to 93% Relative Humidity

Duct Air Velocity: 500 – 4000 ft./min. (91.4 – 1219.2 m/min.)

Electrical Ratings for DH500

Voltage Range: 14.5 – 32 VDC Peak

Standby Current (nominal): 150uA at 24 VDC

Power-Up Surge at Max.

Rated Voltage: 1.5mA-sec.

LED current (nominal): 6mA at 24 VDC

blowers, change over air handling systems, etc. This can

prevent the distribution or isolation of toxic smoke and fire

gases throughout the areas served by the duct system.

Two LEDs on each detector latch ON to provide a local

alarm indication. There is also a remote alarm output for

use with auxiliary devices. The DH500 has remote test

capability with the RTS451/RTS451KEY Remote Test

Station.

Contents of the Duct Detector Housing Kit

The DH500 consists of the following items: (See Figure 1.)

See Note 1 on Page 2 for inlet sampling tube and detector

supply information.

1. Complete housing base and cover assembly.

2. Two #10 sheet metal mounting screws.

3. Two sampling tube filters.

4. One test magnet.

5. Drilling template.

6. Two 5/16-inch O-rings.

7. Two rubber tube bushings seals.

8. Four #6 self-tapping mounting screws for the sampling

tube.

9. One filter adapter.

10. One inlet tube end plug.

11 .Four #6x7/10 cover mounting screws.

12. Two #10 speed nuts.

13. One test coil and parts bag.

1 2 3 4 5 6 ... 11 12

Resumo do Conteúdo

Página 1 - Detector Housing

D500-08-00 1 I56-512-07RDH500 Intelligent Air Duct SmokeDetector HousingINSTALLATION AND MAINTENANCE INSTRUCTIONS3825 Ohio Avenue, St. Charles, Illino

Página 2 - D500-08-00 2 I56-512-07R

D500-08-00 10 I56-512-07R18. Put detector into alarm using appropriate methoddescribed in STEP 7. PERFORM DETECTOR CHECK(page 7 of this manual).19. No

Página 3 - D500-08-00 3 I56-512-07R

D500-08-00 11 I56-512-07RThree-Year Limited WarrantySystem Sensor warrants its enclosed smoke detector to be free fromdefects in materials and workman

Página 4 - D500-08-00 4 I56-512-07R

Página 5 - D500-08-00 5 I56-512-07R

D500-08-00 2 I56-512-07RNote 1: The inlet sampling tube must be ordered separate-ly. It must be the correct length for the width of theduct where it w

Página 6 - RA400Z or (-)

D500-08-00 3 I56-512-07RTable 1. Sampling (Inlet) TubesTube Outside Duct WidthST-1.5 1 to 2 ft. (0.3 to 0.6 m)ST-3 2 to 4 ft. (0.6 to 1.2 m)ST-5 4 to

Página 7 - D500-08-00 7 I56-512-07R

D500-08-00 4 I56-512-07RIn no case should more than 2 air inlet holes be cut off thetube. There must be a minimum of 10 holes in the tubeexposed to th

Página 8 - TEST COIL

D500-08-00 5 I56-512-07RUse a 0.193-inch diameter (#11) drill and add the appropri-ate number of holes so that the total number of holesexposed to the

Página 9 - D500-08-00 9 I56-512-07R

D500-08-00 6 I56-512-07R(+)(-)RA400REMOTE ALARMLED OPTION1 PER UNIT8mA CURRENT DRAWRA400Z (+)RA400Z or (-)RTS451/RTS451KEYEXTERNAL(-) POWER (+)SUPPLY*

Página 10 - D500-08-00 10 I56-512-07R

TWISTCOUNTERCLOCKWISETO REMOVEDUCTHOUSINGTWISTCLOCKWISETO INSTALLDETECTORHEADMOLDED RIBTESTMAGNETPAINTED SIDETOWARD HOUSINGDUCTDETECTORHOUSINGDETECTOR

Página 11

D500-08-00 8 I56-512-07R7.3 MOD400 Sensitivity TestAfter verification of alarm capability, the MOD400 testmodule may be used with a voltmeter to check

Página 12 - DETECTOR TEST LOG

D500-08-00 9 I56-512-07RRecommended Detector Maintenance ProcedureNOTE: Notify the proper authorities that the smoke detec-tor system is undergoing ma

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System-sensor DH500 Manual do Utilizador

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