A05-0419-000

Architectural/Engineering Specifications

268A specifically for use in air handling systems. The flexible housing of the duct smoke detector fits multiple footprints from square to rectangular. The detector

shall operate at air velocities of 100 feet per minute to 4000 feet per minute (0.5 to 20.32 meters/second). The unit shall be capable of controlling up to 50 air

handling systems when interconnected with other detectors. The detector shall be capable of providing a trouble signal in the event that the front cover is

removed. It shall be capable of local testing via magnetic switch, test button on the cover, or remote testing using the SSK451 Multi-Signaling Accessory or the

RTS451KEY Remote Test Station. Terminal connections shall be of the strip and clamp method suitable for 12–18 AWG wiring.

Physical Specifications

Size: (Rectangular Dimensions)

(Square Dimensions)

14.38 in (37 cm) Length; 5 in (12.74 cm) Width; 2.5 in (6.36 cm) Depth

7.75 in (19.7 cm) Length; 9 in (22.9 cm) Width; 2.5 in (6.35 cm) Depth

Weight:

2.5 lbs (1.14 kg)

Operating Temperature Range:

D4120 & D4S: –4° to 158°F (–20° to 70°C); D4P120: –40° to 158°F (–40° to 70°C)

Storage Temperature Range:

D4120 & D4S: –22° to 158°F (–30° to 70°C); D4P120: –40° to 158°F (–40° to 70°C)

Operating Humidity Range:

0% to 95% relative humidity non-condensing

Air Duct Velocity:

100 to 4000 ft/min (0.5 to 20.32 m/sec)

Electrical Ratings

Power supply voltage:

20–29 VDC

24 VAC 50–60 Hz

120 VAC 50–60 Hz

Input capacitance:

270 µF max.

270 µF max.

N/A

Reset voltage:

3.0 VDC min.

2.0 VAC min.

10 VAC min.

Reset time: (with RTS451)

.03 to 0.3 sec.

.03 to 0.3 sec.

.03 to 0.3 sec.

Reset time: (by power down)

0.6 sec. max.

0.6 sec. max.

0.6 sec. max.

Power up time:

35 sec. max.

35 sec. max.

35 sec. max.

Alarm response time:

15 sec.

15 sec.

15 sec.

Sensitivity Test:

See detector label

See detector label

See detector label

Current Requirements: (Using No Accessories)

Max. standby current:

21 mA @ 24VDC

65 mA RMS @ 24VAC 60Hz

20 mA RMS @ 120VAC 60Hz

Max. alarm current:

65 mA @ 24VDC

135 mA RMS @ 24VAC 60Hz 35 mA RMS @ 120VAC 60Hz

Contact Ratings

Alarm initiation contacts: (SPST)

2.0A @ 30 VDC (resistive)

Alarm auxiliary contacts: (DPDT)

10A @ 30 VDC (resistive); 10A @ 250 VAC (resistive); ½ HP @ 240 VAC ; ¼ HP @ 120 VAC

Note: Alarm auxiliary contacts shall not be connected to initiating circuits of control panels. Use the alarm initiation contact for this purpose.

Supervisory contacts: (SPDT)

2.0A @ 30 VDC (resistive); 2.0A @ 125 VAC (resistive)

Accessory Current Loads at 24 VDC

Device

Standby

Trouble

Alarm

APA151/APA451

12.5 mA

n/a

30 mA Max.

MHR/MHW

0 mA

n/a

29 mA Max.

RA400Z

0 mA

n/a

12 mA Max.

RTS451/RTS451KEY

0 mA/12 mA

n/a

12 mA Max.

SSK451

8 mA Max.

16 mA Max.

40 mA Max.

Note: Any combination of accessories may be used such that the given accessory loads are: 110 mA or less at the Aux output, and 50 mA or less at the Alarm output

Installing the InnovairFlex Sampling Tube

The InnovairFlex sampling tube may be installed from the front or back of the detector. The tube locks securely into place and can be removed by releasing

the front or rear locking tab (front locking tab shown below right).