D4240 System Sensor, D4240 Datasheet

D4240

Manufacturer Part Number

D4240

Description

Duct Smoke Detector

Manufacturer

System Sensor

Datasheet

1.D4240.pdf (8 pages)

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inSTaLLaTion and mainTenance inSTrucTionS

d4240 duct Smoke detector

SPecificaTionS

Operating Temperature:

Storage Temperature:

Humidity:

Air Velocity:

D4240 Footprint Dimensions:

D4240 Weight:

Electrical

Power supply voltage:

Input capacitance:

Reset Voltage:

Reset Time (with RTS451/RTS151): .03 to 0.3 sec.

Reset Time (by power down):

Power Up Time:

Alarm response time:

Sensitivity Test:

Current Requirements (Using No Accessories)

Max. standby current

Max. alarm current

TabLe of conTenTS

[1] Limitations of Duct Smoke Detectors. . . . . . . . . . . . . . . . . . . . . . . . . . 1

[2] Exploded View of Duct Smoke Detector Components . . . . . . . . . . . . . 2

[3] General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

[4] Contents of Duct Smoke Detector Kit. . . . . . . . . . . . . . . . . . . . . . . . . . 2

[5] Detector Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

[6] Sampling Tube Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

[7] Measurement Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

[8] Field Wiring Installation Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . 4

[9] Unit Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

[10] Detector Status Indication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

[11] Interconnection (Multiple Fan Shut Down). . . . . . . . . . . . . . . . . . . . . 6

[12] Verification of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

[13] Detector Cleaning Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

[14] Sensor replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

[15] Optional Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

before inSTaLLing

Read the System Sensor Guide for Proper Use of Smoke Detectors in Duct

Applications (A05-1004), which provides information on detector spacing,

placement, zoning, wiring, and special applications. This manual is available

online at www.systemsensor.com. NFPA Standards 72 and 90A should also be

referenced for detailed information.

NOTICE: This manual shall be left with the owner/user of this equipment.

SS-300-022

CONTACT RATINGS

Alarm initiation contacts (SPST)

Alarm auxiliary contatcs (DPDT)

NOTE: Alarm auxiliary contacts shall not be connected to initiating circuits of

control panels. Use the alarm initiation contact for this purpose.

Supervisory Contacts (SPDT)

2.0A @ 30 VDC (resistive)

10A @30 VDC (resistive)

10A @250 VAC (resistive)

2.0A @ 30 VDC (resistive)

2.0A @ 125 VAC (resistive)

HP @240 VAC

HP @120 VAC

D4240: –4° to 158° F (–20° to 70° C)

D4240: –22° to 158° F (–30° to 70° C)

0% to 95% Relative Humidity Non-condensing

100 to 4000 ft./min. (0.5 to 20.3 m/sec.)

Rectangular - 14.38 in L x 5 in W x 2.5 in D (37cm L x 12.7cm W x 6.36cm D)

Square - 7.75 in L x 9 in W x 2.5 in D (19.7cm L x 22.9cm W x 6.35cm D)

2.5 pounds; 1.14 kg

20-29 VDC

270 µF max.

3.0 VDC min.

0.6 sec. max.

35 sec. max.

15 sec.

See detector label

21 mA @ 24 VDC

65 mA @ 24 VDC

Page

24 VAC 50-60-Hz

270 µF max.

2.0 VAC min.

.03 to 0.3 sec.

0.6 sec. max.

35 sec. max.

15 sec.

See detector label

65 mA RMS @ 24VAC 60Hz

135 mA RMS @ 24 VAC 60 Hz

IMPORTANT: This detector must be tested and maintained regularly following

NFPA 72 requirements. The detector should be cleaned at least once a year.

[1] LimiTaTionS of ducT Smoke deTecTorS

The National Fire Protection Association has established that DUCT DETEC-

TORS MUST NOT BE USED AS A SUBSTITUTE FOR OPEN AREA DETECTOR

PROTECTION as a means of providing life safety. Nor are they a substitute for

early warning in a building’s regular fire detection system.

System Sensor supports this position and strongly recommends that the user

read NFPA Standards 90A, 72, and 101. The D4240 Air Duct Smoke Detectors

are listed per UL 268A.

This device will not operate without electrical power. Fire situations may

cause an interruption of power. The system safeguards should be discussed

with your local fire protection specialist.

This device will not sense smoke unless the ventilation system is operating

and the cover is installed.

For this detector to function properly, it MUST be installed according to the in-

structions in this manual. Furthermore, the detector MUST be operated within

ALL electrical and environmental specifications listed in this manual. Failure

to comply with these requirements may prevent the detector from activating

when smoke is present in the air duct.

ACCESSORY CURRENT LOADS AT 24 VDC

DEVICE

APA151/APA451

MHR/MHW

RA400Z/RA100Z

RTS451/RTS151

RTS451KEY/RTS151KEY

SSK451/RTS2-AOS

NOTE: Any combination of accessories may be used such that the given

accessory loads are: 110mA or less at the Aux output, and 50mA or less

at the Alarm output.

STANDBY

8mA Max.

12.5mA

12mA

240 VAC 50-60 Hz

N/A

20 VAC min.

.03 to 0.3 sec.

0.6 sec. max.

35 sec. max.

15 sec.

See detector label

10 mA RMS @ 240 VAC 60 Hz

18 mA RMS @ 240 VAC 60 Hz

0mA

3825 Ohio Avenue, St. Charles, Illinois 60174

WARNING

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

16mA Max.

TROUBLE

n/a

www.systemsensor.com

30mA Max.

29mA Max.

12mA Max.

40mA Max.

I56-3936-002R

ALARM

Related parts for D4240

D4240 Summary of contents

Page 1

... System Sensor supports this position and strongly recommends that the user read NFPA Standards 90A, 72, and 101. The D4240 Air Duct Smoke Detectors are listed per UL 268A. This device will not operate without electrical power. Fire situations may cause an interruption of power ...

Page 2

... VerifY air fLoW direcTion and VeLociTY Model D4240 detectors are designed to be used in air handling systems with air velocities of 100 to 4000 feet per minute. Duct widths from 6 inches to 12 feet can be accommodated. Be sure to check engineering specifications to ensure that the air velocity in the duct falls within these parameters. If neces- sary, use a velocity meter (anemometer) to check the air velocity in the duct ...

Page 3

... Section 7.1. [7] meaSuremenT TeSTS [7.1] air fLoW The D4240 is designed to operate over an extended air speed range of 100 to 4000 FPM. To verify sufficient sampling of ducted air, turn the air handler on and use a manometer to measure the differential pressure between the two sampling tubes ...

Page 4

... Unit Configuration: [9] uniT configuraTion H0163-01 A three position Dip Switch is included on the D4240 in order to configure the setup of the unit. One switch is used to determine it there are one or two sensors connected to the Power Board. The second switch selects an instanta- neous or 7-minute tamper Delay ...

Page 5

SYSTem Wiring diagram for 4-Wire ducT Smoke deTecTorS: Do not loop wire under terminals when wiring detectors. Break wire runs to provide system supervision of connections. POWER INPUTS (NOTE 1) 24VAC/DC 9 AUXILIARY CONTACTS FOR FAN SHUTDOWN, ETC. ...

Page 6

... DH100ACDC units may be interconnected. Please note that each of the 9 DH100ACDC units interconnected can be substituted by three D4240 units. Therefore, when using the interconnect feature a single DH100ACDC can drive either 9 DH100ACDC’ D4240 units. NOTE: Alarm can be reset only at the initiating device and not at the devices interconnected. ...

Page 7

... SUP RESET 13 + ACC + 5 – ACC – 4 (GREEN LED) POWER 3 NOTE: WIRING DIAGRAM SHOWN IS FOR D4240 4-WIRE DUCT SMOKE DETECTOR SYSTEM EQUIPPED WITHOUT A CONTROL PANEL. NOTE: A TROUBLE CONDITION IS INDICATED BY LOSS OF GREEN LED D4240 RTS451/RTS451KEY 10 7 FIELD 9 18 INSTALLED AUX OUT + ...

Page 8

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