Addressable Duct Smoke Detector DH-99-A

Product Code: DH-99-A (0200-05940)

The Hochiki DH-99 Addressable Duct Smoke Detector pro-vides early detections of smoke and products of combustions present in the air, moving through the HVAC ducts in Commercial, Industrial, and Residential applications. The DH-99 is designed to prevent the recirculation of smoke in areas by the Air Handling Systems, fans and blowers. Complete systems may be shut down in the event of smoke detection. The DH-99-A operates on the Digital Communication Protocol (DCP).

Hochiki – FireNET®	DH-99 Analog Duct Detector
Duct Detector Model #	DH-99-A	DH-99-AR
Detector Head model	ALK-D
Detector Head Type	Analog Photoelectric
Communication	DCP Powered Loop
Input Voltage	DCP Powered Loop	DCP Powered Loop/24V DC
Standby Current	390μA	390μA
Alarm Current	540μA	540μA
Alarm Contacts	N/A	2 form C rated at 10A@250V AC
Sensitivity Test Method	Control Panel
Remote Indication Compatibility (Refer to DH-98 Accessories)	N/A	Power, Alarm, Horn/Piezo Test
Air Velocity	300 to 4000 ft/min.
Ambient Temperature	32°F to 100°F (0°C to 38°C)
Humidity	10% to 85% Relative Humidity (non-condensing)
Housing Material	18 G.A. steel backbox, clear plastic cover
Finish	Grey Paint
Dimensions	91/8″L x 71/4″W x 21/4″H
Maximum Net Weight	3lbs.
Sampling Tubes	2.5ft., 5ft. or 10ft.

Specifications subject to change without notice.

• Detects and limits the spread of smoke throughout building HVAC ducts
• Compatible with building automation and Fire Alarm Systems
• Installs quickly and easily
• No screen of filters to clean
• Rugged gray steel back box with clear cover
• Meets UL268A requirements

• Signaling Listed – S1383
• FM APPROVED – Pending
• CSFM Listed – 3240-0410:0155
• ISO 9001-2008

	DH-99 Analog Duct Detector – Datasheet