Bosch D7050DH Specsheet
Fire Alarm Systems | D7050DH Addressable Photoelectric Duct Smoke Detector Head
D7050DH Addressable Photoelectric Duct
Smoke Detector Head
www.boschsecurity.com
u Connects to the two-wire multiplex bus of the
FPD-7024 and D7024 Addressable FACPs
The D7050DH is designed for use with the D343 Duct
Smoke Detector Housing.
The detector is a UL Listed, duct photoelectric smoke
detector designed for use with commercial fire
protective signaling systems and household fire
warning systems (see NFPA 72, the National Fire Alarm
Code). It is compatible with the FPD-7024 and D7024
Addressable Fire Alarm Control Panels (FACPs).
It detects large smoke particles in air ducts by
scattering light from a pulsed infrared source
operating with a gated, high-speed, photodiode
infrared sensor. The symmetry of the optical chamber
allows 360° uniform smoke entry, but minimizes
external light entry.
Functions
Detector Head and Housing System
The detector head is part of a compound system of
detector head and housing. The detector housing
installs on the duct and contains all the wiring. The
detector head attaches to the housing by aligning the
head with the housing and turning it clockwise. No
u Superior dust immunity
u Exclusive Chamber Check self-diagnostics
u Automatic sensitivity test features
u Easy disassembly for cleaning
tools are required for installation other than the hex
key used to tighten the tamper screw. Each detector
head requires a D343 detector housing.
Chamber Check Selfdiagnostics
The detector meets NFPA guidelines for sensitivity
testing, because you can visually inspect the detector
and check the flash rate of the LED. If the calibration
is out of factory-listed range, the LED on the detector
double flashes once every 3 sec to 8 sec. Follow the
instructions provided with the detector to clean it.
LED Operation
When the detector operates normally, the LED flashes
once every 3 sec to 8 sec. In alarm, the detector
flashes at least once per second.
Magnetic Test Feature
Test the detector's operation by placing the SMK-TM
Test Magnet next to the detector's LED for three
consecutive flashes. This causes the detector to send
an alarm.
2 | D7050DH Addressable Photoelectric Duct Smoke Detector Head
Certifications and approvals
Region Certification
USA UL UROX: Smoke - Automatic Fire Detectors
CSFM see our website
Hong Kong HKFSD
(UL268 and A), UROX7: Smoke - Automatic Fire Detectors Certified for Canada (cULus)
Installation/configuration notes
Compatible Products
The following products are compatible with the
D7050DH Duct Smoke Detector:
Category Product ID Product Description
Control
Panels
D7024-EXP FACP for export
Detector
Bases
Remote
Annunciator
s
D7024 FACP
D343 Duct detector housing
DRA-5 5 VDC remote annunciator
Parts included
Power Requirements
Current
(alarm and standby):
Power-up Time: 22 sec maximum
Voltage (minimum): 8 VDC peak from the multiplex bus
Refer to the D343 Installation
Instructions (P/N: 48199)
Ordering information
D7050DH Addressable Photoelectric Duct Smoke Detector Head
Designed for use with the D343 Duct Smoke Detector
Housin
Order number D7050DH
Accessories
DRA‑5 Remote Annunciator (5 VDC)
Designed to provide remote annunciation of alarms for
a number of Bosch smoke and heat detectors
Order number DRA-5
DT‑2 Detector Removal Tool
Use the DT‑2 to remove, replace, or test the detector
head
Order number DT-2
SMK‑TM Test Magnet
Used to test detectors
Order number SMK-TM
Quan
tity
1 Detector head
1 Lit pack – Installation Manual, Technical Service Note on
Component
installation
Technical specifications
Environmental Considerations
Radio Frequency
Interference (RFI)
Immunity:
Temperature
(normal operating):
Note: The environment where these detectors are installed must be
within the specified normal operating temperature limits.
No alarm or setup on critical frequencies in
the range of 26 MHz to 950 MHz at 50 V/m
+32°F to +100°F (0°C to +38°C)
Mechanical Properties
Color: Off-white
Dimensions
(diameter x D):
Material: High-impact, fire-retardant ABS plastic
4 in. x 1.3 in. (10.2 cm x 3.3 cm)
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