Bosch D273IS User Manual
When a D132B Reversing Relay Module is used, the
LED does not latch on alarm.
LED does not latch on alarm.
Functions
Chamber Calibration Tests
Check the sensitivity and calibration of any D273
Series Detector model using a visual check, a magnet
test, or a voltage measurement test. Refer to the
D263/D273 Series Installation Guide (P/N: 31341) for
specific instructions to perform these sensitivity tests.
Series Detector model using a visual check, a magnet
test, or a voltage measurement test. Refer to the
D263/D273 Series Installation Guide (P/N: 31341) for
specific instructions to perform these sensitivity tests.
Certifications and Approvals
Region
Certification
USA
UL
UROX: Smoke - Automatic Fire Detectors
(UL268 and A), UROX7: Smoke - Auto-
matic Fire Detectors Certified for Cana-
da (cULus)
Hong Kong
HKFSD
D273IS, D273THC, D273THCS,
D273THE, D273THES, D273R, and
D273S only
USA
MSFM
NYC-
MEA
274-93-E, Vol. VII
CSFM
7272-1615:0134
Installation/Configuration Notes
Use smoke detectors for detection circuits that
protect people. Use heat detectors for circuits that
protect property.
protect people. Use heat detectors for circuits that
protect property.
Compatible Products
The following products are compatible with the D273
Series detectors:
Series detectors:
Category
Product ID
Product Description
Control
Panels
The D273 Series Detector models are compatible with UL
Listed four-wire control panels. Refer to the
manufacturer’s installation instructions to select the
correct EOL resistor.
Modules
D132B
Reversing relay module
Loop Supervision
For loop supervision, install a Bosch Security Systems
D275 Power Supervision Module and an EOL resistor
after the last device on the loop.
D275 Power Supervision Module and an EOL resistor
after the last device on the loop.
Mounting
The detector has a mounting plate that attaches to a
standard four-inch back box.
For commercial and industrial installations in
accordance with NFPA 72, space each detector 30 ft
(9.2 m) apart.
standard four-inch back box.
For commercial and industrial installations in
accordance with NFPA 72, space each detector 30 ft
(9.2 m) apart.
Wiring
The terminal block accepts up to 12 AWG (2.3 mm)
wire. You can remove the terminal block from the
detector for easier wiring. The terminal block snaps in
and out of the detector.
wire. You can remove the terminal block from the
detector for easier wiring. The terminal block snaps in
and out of the detector.
Parts Included
Quant.
Component
1
Detector
1
Literature pack
Technical Specifications
Environmental Considerations
Relative Humidity:
Up to 93%, non-condensing
Operating and Storage
Temperature:
+32°F to +120°F (0°C to +40°C)
Radio Frequency
Interference (RFI)
Immunity
No alarm or setup on critical frequencies
in the range of 26 MHz to 950 MHz.
Mechanical Properties
Dimensions (Diameter x H):
5 in. x 2 in. (12.7 cm x 5.1 cm)
Material:
High impact, fire retardant ABS
plastic
Power Requirements
Power-up Time:
22 sec maximum
RMS Ripple:
25% of DC input maximum
Voltage (stand-by):
10 VDC to 30 VDC
Current Draw (alarm) at 30 VDC
D273, D273TH:
18 mA maximum
D273THC:
33 mA maximum
D273THE, D273THR:
36 mA maximum
D273THS:
78 mA maximum
D273THCS:
90 mA maximum
D273THES:
96 mA maximum
D273IS:
100 mA maximum
Current Draw (standby)
D273, D273TH, D27THC,
D273THCS, D273THS:
0.1 mA maximum
D273IS:
0.14 mA maximum
D273THE, D273THES:
15 mA
D273THR:
18 mA maximum
Ordering Information
D273 Four‑Wire Smoke Detector
Four‑wire smoke detector.
Order number
Four‑wire smoke detector.
Order number
D273
2 | D273 Series Photoelectric Smoke and Smoke and Heat Detectors