Greenheck DH-98-P User Manual
DH-98-P
Standard Features
• Detects and limits the spread of smoke throughout building
HVAC ducts
• Ability to interconnect up to 30 units using the same
independent power supply
• Compatible with building automation and fire alarm systems
• Installs quickly and easily
• Interchangeable "Plug-in" photoelectric or ionization heads
• No screens or filters to clean
• Cover provides magnet window and placement guide for
operational testing without disassembly
• Rugged gray steel box with clear cover
• Accessories - Remote power, remote alarm indication
capability and remote, horn/piezo capability
• Meets UL 268A requirements
Description
The HOCHIKI AMERICA DH-98 Duct Smoke Detector provides
early detection of smoke and products of combustion present
in air moving through HVAC ducts in Commercial, Industrial
and Residential applications. The DH-98-P 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 HOCHIKI
AMERICA
DH-98-P operate on 115 VAC, 24 VAC and 24 VDC.
Smoke Detector
“UL CLASSIFIED (see complete marking on
product)”
“UL CLASSIFIED to Canadian safety standards
(see complete marking on product)”
Standard 555 (Listing #R13317)
Standard 555S (Listing #R13447)
The DH-98-P is designed and built to meet all local
requirements, as well as the NFPA regulations regarding duct
smoke detectors. Output terminals are provided for remote
accessories such as a horn, strobe, remote status indicators
and reset key switches or push buttons.
Listings
UL268A
CSFM 3240-0410:155
FM Approved 3005751
Notes
1. Mininum air velocity for smoke detector operation is 300
fpm (1.5 m/s). Maximum is 4000 fpm (20.3 m/s).
2. Since the smoke detector is not rated for use at velocities below 300 fpm (1.5 m/s), local code may require an
alternate means of damper closure such as zone detection or automated damper closure when the system fan is
shut down. The local authority having jurisdiction should
be consulted prior to the installation of the damper and
smoke detector.
3. Holes on sampling tube must face into airstream.
4. Smoke detector specifications are:
Operating temperature range: 32°F to 100°F
(0°C to 38°C)
Operating humidity range: 10% to 85% R.H.
Operation voltage: 24 VAC/DC or 120 VAC
Dimensions: 9 1/8 in. L x 7 1/4 in. W x 2 1/4 in. H
(232mm x 184mm x 57mm)
5. Refer to Hochiki Duct Smoke Detector installation instructions.
6. Hochiki America Corporation
7051 Village Drive Suite 100
Buena Park, CA 90621-2268
Phone: 714-522-2246
Fax: 714-522-2268
Technical Support: 1-800-845-6692 or techincalsupport@
hochiki.com
Website: http://www.hochiki.com
DH-98-P DUCT SMOKE DETECTORWIRING DIAGRAMS
DH-98-P DUCT SMOKE DETECTORWIRING DIAGRAMS
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