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2 | D341 Family Four‑wire Duct Smoke Detector Housings
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),
CSFM
3240-1615:0181
Hong Kong
HKFSD
Installation/configuration notes
Compatible Products
The following products are compatible with the D341
Family Four‑wire Duct Smoke Detector Housings:
Category
Product ID
Control Panels
Works with all 24 VDC or VAC or 120 VAC, UL Listed
control panels
Detector
D285‑DH
Heads
Remote
D344‑RL
Annunciators
D344‑RT
DRA‑5
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 D341 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
Product Description
Photoelectric duct smoke detector
head
Remote indicator kit
Remote test kit
Remote annunciator (5 VDC)
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
Environmental Considerations
Relative Humidity:
Up to 93% non‑condensing
Temperature (operating):
+32°F to +120°F (0°C to +49°C)
Mechanical Properties
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
Power Requirements
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
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
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