System-sensor DH400ACDCIHT Manual de usuario descargar pdf

D400-64-00 1 I56-991-08R

DH400ACDCIHT Air Duct Smoke Detector

INSTALLATION AND MAINTENANCE INSTRUCTIONS

3825 Ohio Avenue, St. Charles, Illinois 60174

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

www.systemsensor.com

Before Installing

Please thoroughly read the System Sensor Guide for Proper

Use of Smoke Detectors in Duct Applications (A05-1004),

which provides detailed information on detector spacing,

placement, zoning, wiring, and special applications. Copies

of this manual are available online at www.systemsensor.com

or via System Sensor’s toll free fax-back service, Documents

on Demand at 800/736-7672. 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.

WARNING

This detector is intended for use only with the 1451DHHT

detector head (supplied).

Table of Contents Page

[1] General Description 1

[2] Exploded View of Duct Detector Components 2

[3] Contents of the Duct Detector Kit 2

[4] Installation Sequence 2

[5] Duct Detector Maintenance and Test Procedures 8

[6] Detector Cleaning Procedures 9

[7] Specifications 10

[8] DH400 OE-1 Description and Installation 11

Warranty 12

List of Tables and Figures Page

Fig. 1: Duct Detector Exploded View 2

Fig. 2: Installation of Sampling Tube Gaskets 3

Fig. 3: Mounting Location of Speed Nuts 3

Table 1: Inlet Sampling Tube Selection 3

Fig. 4: Inlet Sampling Tube 4

Fig. 5: Sampling Tube Mounting Configurations 4

Fig. 6: Sampling Tube Filter Installation 5

Fig. 7: Wiring Diagram 6

Fig. 8: Wiring Diagram – No Control Panel 7

Fig. 9: Wiring Diagram – Accessories 8

Fig. 10: Testing Detector Alarm 9

Fig. 11: Detector Head Removal 9

Fig. 12: RTS451/RTS451KEY Test Coil Installation 10

Fig. 13: Ion Head Exploded View 10

[1] 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.

Model DH400ACDCIHT Air Duct Smoke Detectors are sup-

plied with the model 1451DHHT ionization detector head.

This smoke detection method is combined with an efficient

housing design that samples air passing through a duct

and allows detection of a developing hazardous condition.

When sufficient smoke is sensed, an alarm signal is initi-

ated at the fire control panel monitoring the detector, and

appropriate action can be taken to shut off fans and blow-

ers, change over air handling systems, etc. These actions

can facilitate the management of toxic smoke and fire gases

throughout the areas served by the duct system.

The DH400ACDCIHT air duct smoke detector is designed to

operate from 24 VDC, 24 VAC, 120 VAC, or 240 VAC. Alarm

and supervisory relay contacts are available for control

panel interface (alarm initiation), HVAC control, and other

auxiliary functions. This detector is not designed for 2-wire

applications.

For testing, the alarm can be enabled by a magnet activated

test switch or by the optional remote test station. The duct

smoke detectors latch into alarm state when alarm occurs.

LEDs on each detector illuminate to provide local alarm

indication, and optional accessories offer a variety of

annunciation capabilities.

The detector can be reset by a momentary power inter-

ruption, by the magnet activated reset switch, or by the

optional remote test station.

NOTICE: The DH400ACDCIHT can be installed outdoors

using the optional accessory DH400 OE-1.

Please refer to section 9 for a description and

installation instructions.

1 2 3 4 5 6 ... 11 12

Indice de contenidos

Pagina 1

D400-64-00 1

Pagina 2 - H0237-00

3. Clean the screen thoroughly with a soft brush or vacu-um. Replacement screens (RS14) are available.4. Brush or vacuum the inside of the cover. The

Pagina 3 - TUBE BUSHING

D400-64-00 11

Pagina 4 - AIR FLOW DIRECTION

D400-64-00 12

Pagina 5 - FOAM GASKET

[2] Figure 1. Exploded View Of Duct Detector Components:[3] Contents Of The Duct Detector Kit1. Complete housing base and cover assembly2. Two #10

Pagina 6 - H0240-00

[4.3] Secure The Detector Housing To The DuctRemove the duct housing cover. Slide the foam gaskets over the tube bushings as shown in Figure 2. Make s

Pagina 7 - H0241-00

Install the inlet tube as follows:1. Drill a 3/4-inch hole in the duct directly opposite the hole already drilled for the inlet tube.2. Slide

Pagina 8 - H0242-00

[5.4.3] Modifications Of Inlet Sampling TubesThere may be applications where duct widths are not what is specified for the installation. In such cases

Pagina 9 - H0243-00 H0244-00

24V120VAC220/240VAC12 1213 14AVAILABLE POWER INPUTSALARM AUXILIARY CONTACTSFOR FAN SHUTDOWN, ETC.1516171819 20N.C.C.N.O.N.O.C.N.C.ALARM AUXILIARY CONT

Pagina 10 - H0246-00

24V120VAC220/240VAC12 1213 14AVAILABLE POWER INPUTSALARM AUXILIARY CONTACTSFOR FAN SHUTDOWN, ETC.1516 171819 20N.C.C.N.O.N.O.C.N.C.ALARM AUXILIARY CON

Pagina 11

[5] Duct Detector Maintenance And Test ProceduresTest and maintain duct detectors as recommended in NFPA 72. The tests contained in this manual

Pagina 12

[5.2.2] Alarm Tests[5.2.2.1] M02-04-01 Magnet Test1. Place the painted surface of the magnet into the Test locator molded into the side of th

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