Bosch D282A-DH Specsheet

Fire Alarm Systems | D282A‑DH Replacement Duct Smoke Detector Head (24 VDC)

D282A‑DH Replacement Duct Smoke
Detector Head (24 VDC)

www.boschsecurity.com

u 24 VDC replacement detector head for D300A and

D300A‑HV Conventional Duct Detector Housings

The D282A‑DH Replacement Duct Smoke Detector
Head detects the large smoke particles which typically
result from wood, paper, and fabric combustion. It is a
conventional 24 VDC photoelectric smoke detector
head for use with the D300A and D300A‑HV
conventional duct detector housing units.
It uses an infrared (IR) LED light source and a silicon
photo diode to measure light reflected from
particulates in a detection chamber. After two
consecutive measurements exceeding the threshold
level, the unit signals an alarm condition. The
detection chamber, designed for reliable smoke entry
characteristics, is protected by a micro-fine insect
screen to minimize nuisance alarms.
The sensitivity stability and high signal‑to‑noise ratio of
this detector permits its use in a wide range of
environmental conditions. The detector head has a
moisture‑proof reed switch that reacts to an external
magnet for testing. The magnet test simulates a 4% to
6% smoke obscuration, which places the detector in
an alarm condition. This test is especially useful in
environmentally unstable or clean areas.
There are built‑in LEDs that flash to indicate the unit is
powered. The LEDs latch on steady in an alarm
condition.

u Easy head removal for cleaning and servicing

u Flashing LED power on indicator

Certifications and approvals

Region Certification

USA UL UROX: Smoke - Automatic Fire Detectors

CSFM see our website

Hong Kong HKFSD J-005/C/026

(UL268 and A)

Installation/configuration notes

Compatible Products

The following products are compatible with the
D282A‑DH Replacement Duct Smoke Detector Head:

Category Product ID Product Description

Control Panels D7022 Two‑zone FACP

D7024 Conventional FACPs

D7024‑EXPConventional FACPs for export

Detector
Housings

D300A‑HV High‑voltage duct smoke detector

D300A Duct smoke detector with housing

with housing

2 | D282A‑DH Replacement Duct Smoke Detector Head (24 VDC)

Represented by:

Americas: Europe, Middle East, Africa: Asia-Pacific: China: America Latina:

Bosch Security Systems, Inc.
130 Perinton Parkway
Fairport, New York, 14450, USA
Phone: [phone]
Fax: [phone]
[e-mail]
www.boschsecurity.us

Bosch Security Systems B.V.
P.O. Box 80002
5617 BA Eindhoven, The Netherlands
Phone: + 31 40 2577 284
Fax: [phone]
[e-mail]
www.boschsecurity.com

Robert Bosch (SEA) Pte Ltd, Security
Systems
11 Bishan Street 21
Singapore 573943
Phone: [phone]
Fax: [phone]
[e-mail]
www.boschsecurity.asia

Bosch (Shanghai) Security Systems Ltd.
201 Building, No. 333 Fuquan Road
North IBP
Changning District, Shanghai
200335 China
Phone [phone]
Fax: [phone]
www.boschsecurity.com.cn

Robert Bosch Ltda Security Systems Division
Via Anhanguera, Km 98
CEP 13065-900
Campinas, Sao Paulo, Brazil
Phone: [phone]
Fax: [phone]
[e-mail]
www.boschsecurity.com

© Bosch Security Systems 2014 | Data subject to change without notice
2702251147 | en, V2, 04. Aug 2014

Installation

The D282A‑DH installs quickly and easily into the
D300A and D300A‑HV. Remove the four screws that
hold the housing unit's cover in place, twist the
existing detector head counter‑clockwise to remove it,
insert the replacement head, turn it clockwise, replace
the housing unit's cover and tighten the screws.

Parts included

Quant. Component

1 D282A‑DH repalcement detector head

1 Literature pack

Technical specifications

Environmental Considerations

Relative Humidity: 10% to 85% non‑condensing

Temperature (operating): +32°F to +120°F (0°C to +49°C)

Mechanical Properties

Color: Bone white

Dimensions (diameter): 4 in. (10.2 cm)

Power Requirements

Current

Alarm: Depends on housing; refer to the D300A or D300A‑HV

specifications

Standby: 0.045 mA

Surge: 0.16 mA

Voltage

Operating: 15.0 VDC to 33.0 VDC

Ordering information

D282A‑DH Replacement Duct Smoke Detector Head (24
VDC)

Detects the large smoke particles which typically
result from wood, paper, and fabric combustion

Order number D282A-DH