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D341 Family four‑wire duct smoke detector housings

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Close Modal
  • For 1 ft. (30.5 cm) to 10 ft. (3 m) ducts with air velocity between 300 ft./min. to 4000 ft./min. (1.52 m/s to 20.3 m/s)
  • Easy duct tube installation through the housing cuts installation time
  • Detector test and reset without removing covers
  • Clear cover allows quick visual inspection
  • Tube filters, dust immune smoke detector, and easy disassembly for cleaning reduce maintenance time and cost

Product Variants

D341 Family four‑wire duct smoke detector housings

Duct detector housing, 4-wire 24/120V

CTN D341
Product No. 4.998.113.250

D341 Family four‑wire duct smoke detector housings

Duct detector kit, 4-wire 24/120V

CTN D341P
Product No. 4.998.137.958

Technical Specification

Key Specifications

Voltage, operating 20 VDC to 29 VDC, 24 VAC, or 120VAC
RMS ripple, maximum 25 percent of DC input
Power-up time 22 sec maximum
Alarm Form A Normally Open (NO and C) contacts 0.5 A at 24 VDC and 24 VAC, 0.1 A at 120 VAC
Auxiliary Two Form C Normally Open and Normally Closed (NO and C and NC) contacts 10 A at 24 VDC, 24 VAC, 120 VAC, or 240 VAC
Trouble Form “A” Normally Open (NO/C) contacts 0.5 A at 24 VDC, 24 VAC, 0.1 A at 120 VAC
Condition 24 VDC, 24 VAC, 120 VAC, 230 VAC
Alarm 65 mA, 200 mA, 110 mA, 30 mA
Standby 15 mA, 85 mA, 100 mA, 25 mA
Trouble 15 mA, 85 mA, 100 mA, 25 mA
Condition 24 VDC, 24 VAC, 120 VAC, 230 VAC
Alarm 15 mA, 0 mA, 0 mA, 0 mA
Standby 10 mA, 0 mA, 0 mA, 0 mA
Trouble 10 mA, 0 mA, 0 mA, 0 mA
Alarm and Remote Coil (ON) 150 mA, 150 mA, 25 mA, 20 mA
Relative humidity 0 to 95%, non-condensing
Temperature, operating +32°F to +120°F (0°C to +49°C) For UL Listed requirements, the operating temperature is +32°F to +100°F (0°C to + 37.8°C)
Package Dimensions (LxWxH) 19.6 in. x 7.6 in. x 8 in. (49.8 cm x 19.2 cm x 20.2 cm)
Product Dimensions (LxWxH) 15.5 in. x 4.25 in. x 6.5 in. (39.5 cm x 11 cm x 16.5 cm)
Material High‑impact fire‑retardant polymer plastic
Accessories

Duct smoke head, 2-/4-wire, 12/24V

CTN D285DH
Product No. 4.998.140.344

Detects the large smoke particles which typically result from wood, paper, and fabric combustion

Remote indicator plate

CTN D344-RL
Product No. 4.998.140.354

Used with the D340 Series Duct Smoke Detector Housings

Remote test/indicator plate, 24V

CTN D344-RT
Product No. F.01U.024.868

Use with a D340/D341/D342 or D343 (legacy product) Duct smoke housing or D296/D297 Long‑range beam smoke detector.

Sample tube, duct 1.5'/45.7cm

CTN D344-1.5
Product No. F.01U.029.219

length 45.7 cm (1.5 ft)

Sample tube, duct 3'/91.4cm

CTN D344-3
Product No. F.01U.029.175

length 91.4 cm (3 ft)

Sample tube, duct 5'/152cm

CTN D344-5
Product No. F.01U.029.174

length 1.52 m (5 ft)

Duct tube filters, 20pcs

CTN D344-TF
Product No. 4.998.137.961

Replaceable filters for duct detector sampling tubes, available in packages of 20

Relay module, form C, 10A 12/24V

CTN PAM-4
Product No. F.01U.135.043

One set of 10.0 A, Form C contacts that can be energized across a range from 9 VDC to 40 VDC

Downloads

Title Type Language
Title
CSFM
Type
PDF
 Language
en-US 
Title
HKFSD
Type
PDF
 Language
en-US 
Title
Datasheet
Type
PDF
 Language
en-US 
es-AR 
pt-BR 
es-ES 
Title
Installation manual
Type
PDF
 Language
en-US 
Title
Technical bulletin (Two-Wire Compatibility)
Type
PDF
 Language
en-US 
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