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Air Products and Controls SL-2000 SERIES DUCT SMOKE DETECTORS


The SL-2000 Series Smoke Duct Detector is the latest innovation for early detection of smoke and products of combustion present in air moving through HVAC ducts in Commercial, Industrial, and Residential applications. The unit is designed to prevent the recirculation or spread of smoke by air handling systems, fans, and blowers. Complete systems may be shut down in the event of smoke detection.

The SL-2000 is designed and built to meet all local code requirements, as well as the NFPA and ICC standards regarding HVAC supply and return duct smoke detectors. Output terminals are provided for a wide range of remote accessories such as horns, strobes, remote status indicators, and test/reset key switches or push buttons.

The SL-2000 includes many features that represent true innovations from current generation duct smoke detectors. Our traditional installer/servicer-friendly approach has been closely followed and expanded throughout the SL-2000. This philosophy provides a new level of efficiency in after-purchase value to both the installer/servicer and end-user. Our attention to detail has yielded a host of “No-Tools Required” features, as well as a multi-application performance level as yet unmatched in the industry. Innovative product combined with unsurpassed customer service equals the right combination for all of your projects. The key features below detail many of the customer-driven innovations incorporated in the SL-2000 Series.

• Low-Flow Technology: Both Ionization and Photoelectric models listed for velocities between 100-4000 ft./min Both models listed for high-temperature applications
• Operating voltages: 230VAC, 115VAC, 24VAC, 24VDC
• Interconnect up to 30 units for common functions
• Patent pending “No-Tools Required” front or rear loading and removing sampling/exhaust tubes
• Patent pending “Test Port Valve” allows for aerosol smoke testing without cover removal
• Clear cover fitted with four captive No-Tools Required” thumbscrews
• Instantaneous cover removal trouble indication
• Staggered terminal blocks for easier wiring
• Flashing LED on detector head indicates normal operation
• Magnet test capability (magnet included)
• More wiring space than competitive models
• Footprint allows easy retrofit in many applications without additional drilling
• Over 15 remote accessories available
• Duct wall gaskets on back of enclosure are pre-installed
• Compatible with the WP-2000 weatherproof enclosure
• Reset switch is also an alarm test switch - competitive models require a magnet or cover removal to test at unit
• Unit includes green pilot and red alarm visual indicators
• External mounting tabs do not require cover removal to install
• Colored cover gasket indicates proper cover seal
• UL, CUL, CSFM, and MEA Listed
• Compact, lightweight size means easy handling, lower shipping costs
• Two sets of 10A form “C” alarm contacts
• One set of 2A form “A” alarm contacts
• One set of 10A form “C” trouble contacts
• Large terminal connection screws
• Standard interchangeable “plug-in” UL268 photoelectric or ionization heads
• Advanced detector head design yields internal dust filtering
• No additional screens or filters to clean
• Compatible with building automation and fire alarm systems
• Ionization and Photoelectric versions available
• Complete wiring details permanently attached to unit

Select a link under the "item" tab below to order.

Cat #DescriptionsDetector Model Number
SL-2000-NIonization: 230VAC, 115VAC, 24VAC, 24VDC55000-225APO
SL-2000-PPhotoelectric: 230VAC, 115VAC, 24VAC, 24VDC55000-328APO
STN-1.0Sampling tube for 12” or less duct width-
STN-2.5Sampling tube for 6” to 2.5’ duct width-
STN-5.0Sampling tube for 2.5’ to 5.0’ duct width-
STN-10.0Sampling tube for 5.0’ to 10.0’ duct width-
MODEL NUMBER: SL-2000-N Ionization: 230VAC, 115VAC, 24VAC, 24VDC
SL-2000-P Photoelectric: 230VAC, 115VAC, 24VAC, 24VDC
SL-2000-P 55000-328APO
SAMPLING TUBES: STN-1.0 Sampling tube for 12" or less duct width
STN-2.5 Sampling tube for 6" to 2.5' duct width
STN-5.0 Sampling tube for 2.5' to 5.0' duct width
STN-10.0 Sampling tube for 5.0' to 10.0' duct width
ACCESSORIES: MS- and MSR-Series remote accessories, WP-2000 weatherproof
enclosure, TG-2000 aerosol test gas, and T-PB power supplies
(All available from Air Products and Controls Inc.)
POWER REQUIREMENTS (without accessories)±1% @ 20°C (68°F) annually, for two years
Standby: 230VAC 8 mA:
115VAC 14 mA
24VAC 55 mA
24VDC 14 mA
Alarm: 230VAC 18 mA
115VAC 32 mA
24VAC 190 mA
24VDC 68 mA
Alarm Contacts: Resistive load: 2 sets form “C” rated at 10 Amps @ 115VAC
Resistive load: 1 set form “A” rated at 2 Amps
Trouble Contacts: Resistive load: 1 set form “C” rated at 10 Amps @ 115VAC
AIR VELOCITY: 100 to 4,000 ft./min
AMBIENT TEMPERATURE: SL-2000-N 32°F to 158°F (0°C to 70°C)
SL-2000-P 32°F to 140°F (0°C to 60°C)
HUMIDITY: 85 ±5 % RH (@32 ±2 C; 86 ±3.6 F) Non-Condensing/Non Freezing
WIRING: Solid or stranded: #12 to #22 AWG terminals
APPROVALS: UL & CL Listed (UL268A, UROX, UROX7) File # S2829
CS FM Listed (3240-1004:105)
MEA Accepted (73-92-E; VOL. 27)
MATERIAL: Grey plastic backbox, clear plastic cover (Makrolon 94V-0)
DIMENSIONS: 13 ½" L x 4 ½" W x 2 ¼" H
MAX. NET WT.: 2 ½ lbs.
For SL-2000-N (Ionization) Americium 241; 0.9 Micro-Curie
Do not expose to corrosive atmospheres
HARDWARE: 7" exhaust tube, sampling tube end cap, mounting template, test
magnet, and mounting hardware included

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