D340 Family two‑wire duct smoke detector housings

D340 Family two‑wire duct smoke detector housings
  • 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
  • Details
    Current (alarm) Dependent on the control panel that must limit the alarm current to 100 mA maximum.
    Current (standby) 0.12  mA maximum
    Maximum RMS Ripple 25% of DC input
    Power-up time 22 sec maximum
    Voltage, operating 8.5 VDC to 32 VDC from two-wire loop. Optional 24 VDC/VAC from control panel or external supply.
    D340 with D344-RT, D344-RL, and External Power
    Loop power External power
    8.5 V to 32 V 24 V
    Condition
    Alarm < 0.120 mA , 5 mA
    Standby < 0.170 mA , 0.030 mA
    Trouble Current limit to 100 mA , 170 mA in remote test
    D340 with D344-RT, D344-RL without External Power
    Loop power 8.5 V to 32 V
    Condition
    Alarm < 0.140 mA
    Standby < 0.170 mA
    Trouble Current limit to 100 mA
    D340 without D344-RT, D344-RL without External Power
    Loop power 8.5 V to 32 V
    Condition
    Alarm < 0.130 mA
    Standby < 0.150 mA
    Trouble Current limit to 100 mA
    Air velocity 300 ft./min to 4000 ft./min (1.5 m/s to 20.3 m/s)
    Relative humidity 0% to 95%, non-condensing
    Temperature, operating +32F to +120°F (0°C to +49°C). For UL listed requirements, the operating temperature range is +32°F to +100°F (0°C to +37.8°C).
    Package Dimensions (LxWxH) 18.9 in. x 7.5 in. X 7.8 in. (48 cm x 19 cm x 19.8 cm)
    Product Dimensions (LxWxH) 15.5 in. x 4.3 in. x 6.5 in. (39.5 cm x 11 cm x 16.5 cm)
    Material High‑impact fire‑retardant polymer plastic
    Weight GrossNet 4.23 lb. (1.92 kg)3.84 lb. (1.74 kg)

    Images

     
  • Certificates (2)
    Title Type Language
    CSFM PDF
    HKFSD PDF
     
  • Documents (3)
     
 

Product variants

D340 Duct detector housing, 2-wire

Two‑wire duct detector housing for the D285DH Duct smoke head. Use with compatible control panels.

Commercial Type No.: D340
Product No.: 4.998.113.252

 

Accessories

D285DH Duct smoke head, 2-/4-wire, 12/24V

D285DH Duct smoke head, 2-/4-wire, 12/24V

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

Commercial Type No.: D285DH
Product No.: 4.998.140.344

 
D344-RL Remote indicator plate

D344-RL Remote indicator plate

Used with the D340 Series Duct Smoke Detector Housings

Commercial Type No.: D344-RL
Product No.: 4.998.140.354

 
 
D344-RT Remote test/indicator plate, 24V

D344-RT Remote test/indicator plate, 24V

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

Commercial Type No.: D344-RT
Product No.: F.01U.024.868

 
D344-1.5 Sample tube, duct 1.5'/45.7cm

D344-1.5 Sample tube, duct 1.5'/45.7cm

length 45.7 cm (1.5 ft)

Commercial Type No.: D344-1.5
Product No.: F.01U.029.219

 
 
D344-3 Sample tube, duct 3'/91.4cm

D344-3 Sample tube, duct 3'/91.4cm

length 91.4 cm (3 ft)

Commercial Type No.: D344-3
Product No.: F.01U.029.175

 
D344-5 Sample tube, duct 5'/152cm

D344-5 Sample tube, duct 5'/152cm

length 1.52 m (5 ft)

Commercial Type No.: D344-5
Product No.: F.01U.029.174

 
 
D344-TF Duct tube filters, 20pcs

D344-TF Duct tube filters, 20pcs

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

Commercial Type No.: D344-TF
Product No.: 4.998.137.961