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-500/C/030
Installation/configuration notes
Compatible Products
The following products are compatible with the D341
Family Four‑wire Duct Smoke Detector Housings:
Category Product ID Product Description
Control Panels Works with all 24 VDC or VAC or 120 VAC, UL Listed
control panels
Detector
Heads
D285‑DH Photoelectric duct smoke detector
head
Remote
Annunciators
D344‑RL Remote indicator kit
D344‑RT Remote test kit
DRA‑5 Remote annunciator (5 VDC)
Remote Indicators
NFPA 72 requires detectors have remote alarm
indicators where duct smoke detectors are installed in
concealed locations, where the detector is more than
10 ft (3 m) above the floor, or where the detector's
alarm indicator is not visible to responding personnel.
The optional D344‑RT Remote Test Kit, D344‑RL
Remote Indicator Kit, or DRA‑5 Remote Annunciator
can satisfy this requirement.
Power Considerations
The detector housing provides one primary power
source of 24 VDC, 24 VAC, or 120 VAC. Do not connect
a high-voltage AC source and a low‑voltage AC/DC
source to the same housing.
Parts included
The D341 Four‑wire Duct Smoke Detector Housing
comes with:
Quant. Component
1 D341 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 D341P Duct Photoelectric Smoke Detector Kit
comes with all components supplied with the D341
plus:
Quant. Component
1 D285DH Photoelectric Duct Smoke Detector Head
1 D344‑1.5 Sampling Tube
Technical specifications
Electrical
Current (operating): 24 VDC: 65 mA maximum;
24 VAC: 200 mA maximum;
120 VAC: 110 mA maximum
Voltage (operating): 24 VDC, 24 VAC, or 120 VAC
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: Form A, normally‑open (NO) contacts rated for 0.5 A at
24 VDC or VAC and for 0.1 A at 120 VAC
Auxiliary: Two Form C contacts rated for 10 A at 24 VDC or VAC
or 120 VAC
Trouble: Form A, normally‑closed (NC) contacts rated for 0.5 A
at 24 VDC or VAC and for 0.1 A at 120 VAC
Ordering information
D341 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 D341
D341P Photoelectric Duct Smoke Detector Kit
Kit comes with a D341 Four‑wire Duct Smoke Detector
Housing, a D285DH Photoelectric Duct Smoke
Detector Head, and a D344-1.5 Sampling Tube.
Order number D341P
2 | D341 Four‑wire Duct Smoke Detector Housings