Bosch D7050TH Specsheet
Fire Alarm Systems | D7050 Addressable Photoelectric Smoke and Smoke Heat Detector Heads
D7050 Addressable Photoelectric Smoke
and Smoke Heat Detector Heads
www.boschsecurity.com
u Connects to the multiplex bus of the FPD‑7024 or
D7024 Addressable FACP and the DS7400Xi Control
Panel
The D7050 Photoelectric Smoke and Smoke Heat
Detector Heads are UL Listed, open-area photoelectric
smoke detectors designed for use with commercial fire
protective signaling systems and household fire
warning systems (see NFPA 72, the National Fire Alarm
Code). They are compatible with the FPD‑7024 or
D7024 Addressable Fire Alarm Control Panels
(FACPs), the DS7400Xi Control Panel, and the G
Series Control Panels.
They detect large smoke particles 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.
Use both of these smoke detectors for detection
circuits installed in areas where personnel are present.
The D7050TH has an added fixed-temperature sensor.
This expands the detector application to confined
areas where a fire increases air temperature slowly
and where there is a substantial increase in air
temperature before the fire breaks confinement, such
as furnace rooms, closets, and other confined areas.
u Superior dust immunity
u Exclusive Chamber Check self-diagnostics
u Automatic sensitivity test features
u Easy disassembly for cleaning
Functions
Detector Head and Base System
The D7050 Photoelectric Smoke and Smoke Heat
Detector Heads are part of a compound system of
detector head and base. The detector base installs
over a back box and contains all the wiring. The
detector head attaches to the base by aligning the
head with the base and turning it clockwise. No tools
are required for installation other than the hex key
used to tighten the tamper screw. Each detector head
requires a D7050-B6 detector base.
Chamber Check Self-diagnostics
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. The
detector also sends a dirty chamber report to the
control panel.
LED Operation
When the detector is operating normally, the LED
flashes once every 3 sec to 8 sec. In alarm, the
detector flashes at least once per second.
2 | D7050 Addressable Photoelectric Smoke and Smoke Heat Detector Heads
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.
Certifications and approvals
Region Certification
USA UL UROX: Smoke-automatic Fire Detectors
FM D7050 Family
CSFM see our website
FDNYCoA
Hong Kong HKFSD
(ANSI/UL 268) and UROX7: Smoke-automatic Fire Detectors Certified for Canada (CAN/ULC-S529)
#6173
Installation/configuration notes
Compatible Products
The following products are compatible with the D7050
Smoke Detector and the D7050TH Smoke Heat
Detector:
Category Product ID Product Description
Control Panels FPD‑7024 FACP
D7024 FACP
D7024-EXP FACP for export
G Series D9412G (or later), D7412G (or
Detector Bases D7050-B6 Two-wire base
Remote
Annunciators
Interface
Modules
1
The D7212G models are not UL Listed for commercial fire.
DRA-12/24 12/24 VDC remote annunciator
D8125MUX Multiplex bus interface module
later), and D7212G1 (or later)
Parts included
Quant. Component
1 Detector head
1 Literature pack
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 for field
strengths less than 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)
Power Requirements
Current (alarm): 0.55 mA maximum
Current (standby): 0.55 mA nominal
Power-up Time: 22 sec maximum
Voltage (minimum): 8 VDC peak from the multiplex bus
Ordering information
D7050 Addressable Photoelectric Smoke Detector Head
The D7050 detects large smoke particles 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.
Order number D7050
D7050TH Addressable Photoelectric Smoke and Heat
Detector Head
The D7050TH, in addition to an optical smoke
chamber, has an added 135°F (57°C) fixedtemperature sensor that expands its application to
confined areas where a fire increases air temperature
slowly and where there is a substantial increase in air
temperature before the fire breaks confinement.
Order number D7050TH
Accessories
DRA‑12/24 Remote Annunciator (12/24 VDC)
Designed to provide remote annunciation of alarms
when connected to the D7050‑B6 Multiplex Detector
Base
Order number DRA-12/24
DT‑2 Detector Removal Tool
Use the DT‑2 to remove, replace, or test the detector
head
Order number DT-2
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