Data Sheet

Certifications and approvals
Region Certification
USA UL UROX: Smoke-Automatic Fire Detectors
(ANSI/UL 268) and UROX7: Smoke-Au-
tomatic Fire Detectors Certified for Can-
ada (CAN/ULC-S529)
CSFM see our website
Hong Kong HKFSD J-005/C/030
Installation/configuration notes
Compatible Products
The following products are compatible with the D340
Two‑wire Duct Smoke Detector Housings:
Category Product ID Product Description
Control Panels Bosch makes no claims either written, oral, or
implied that the D340 works with any control panel
other than those listed in Technical Service Note
(P/N: 31866).
Detector
Heads
D285DH Photoelectric duct smoke detector
head
Remote
Annunciators
D344‑RL Remote indicator kit
D344‑RT Remote test kit
DRA‑5 Remote annunciator (5 VDC)
Power Considerations
The duct detector housing is designed for a two-wire
power loop of 8.5 VDC to 32 VDC. If a remote
annunciator is used, an external 24 VDC/VAC supply
capable of supplying 170 mA is needed.
Parts included
The D340 Two‑wire Duct Smoke Detector Housing
comes with:
Quant. Component
1 D340 Duct Detector Housing
1 Exhaust tube
1 Cover gasket
2 Tube clamps with four screws
2 Foam gaskets
2 Air filters
1 Drilling template
1 Hardware pack
1 Literature pack
The D340P Photoelectric Duct Smoke Detector Kit
comes with all components supplied with the D340
plus:
Quant. Component
1 D285DH Photoelectric Duct Smoke Detector Head
1 D344‑1.5 Sampling Tube
Technical specifications
Electrical
Current (alarm): Depends on control panel that must limit the
alarm current to 100 mA maximum
Current (standby): 0.12 mA maximum
Voltage (operating): 8.5 VDC to 32 VDC from control panel
Environmental
Relative Humidity: Up to 93% non‑condensing
Temperature
(operating):
+32°F to +120°F (0°C to +49°C)
Mechanical
Dimensions
(H x W x D):
6.5 in. x 15.5 in. x 4.25 in. (16.5 cm x
39.5 cm x 11 cm)
Material: High‑impact fire‑retardant polymer plastic
Weight (housing
only):
3.75 lb (1.7 kg)
Outputs
Alarm: Depends on control panel that must limit the alarm output
to 100 mA maximum
Ordering information
D340 Duct Detector Housing
Duct detector housing with an exhaust tube, two tube
clamps with screws, one cover and two foam gaskets,
two air filters, a drilling template, installation
instructions and mounting hardware.
Order number D340
D340P Photoelectric Duct Smoke Detector Kit
Kit comes with a D340 Duct Smoke Detector Housing,
a D285DH Photoelectric Duct Smoke Detector Head,
and a D344-1.5 Sampling Tube.
Order number D340P
Accessories
SMK‑TM Test Magnet
Used to test detectors
Order number SMK-TM
2 | D340 Two‑wire Duct Smoke Detector Housings