SYSTEM SENSOR DUCTSD Duct Smoke Detector Cross Reference Owner’s Manual
- June 10, 2024
- SYSTEM SENSOR
Table of Contents
SYSTEM SENSOR DUCTSD Duct Smoke Detector Cross Reference
Product Information
The Duct Smoke Detector is a photoelectric plug-in device that detects smoke in HVAC ducts. It comes in two models: DUCTSD and D4120. The key differences between the two models are:
- Cover integrated smoke test port
- NO field selectable dip switches
- Opaque power board cover
- Interconnect number of devices 30
The DUCTSD model does not offer field selectable dip switches, while the D4120 model allows for the selection of instant or 7-minute delay cover tamper switch activation. Both models can interconnect up to 30 total devices.
Product Usage Instructions
Smoke Test Port Usage
- Put the detector into Speed-Up Test mode by pressing and holding the Test/Reset button for 2 to 7 seconds. When in Speed-Up Test mode, sensor LEDs will alternately flash Red and Green.
- Lift the tethered plug sealing the smoke test port via pull tab.
- Spray canned smoke into the test port.
- Replace the tethered test plug.
D4120 Cover Tamper Switch Activation
The D4120 model allows for the selection of instant or 7-minute delay cover tamper switch activation. To select the desired option:
- Remove the cover from the D4120 detector.
- Locate the dip switch on the power board labeled “Tamper Delay”.
- Toggle the dip switch to the desired setting: “ON” for instant activation, or “OFF” for 7-minute delay activation.
- Replace the cover on the D4120 detector.
Duct Smoke Detector Cross Reference
The DUCTSD 4-wire photoelectric duct smoke detector features a pivoting
housing that fi ts both square and rectangular footprints and mounts to round
or rectangular ductwork. This unit senses smoke in the most challenging
conditions, operating in airfl ow speeds of 100 to 4,000 feet per minute,
temperatures of –4°F to 158°F, and a humidity range of 0 to 95 percent (non-
condensing). A plug-in sensor head offers simple installation and maintenance.
The cover-integrated smoke test port enables easy testing and maintenance
.
Key Differences Between DUCTSD and D4120
- Cover integrated smoke test port
- NO fi eld selectable dip switches
- Opaque power board cover
- Interconnect number of devices 30
COVER INTEGRATED SMOKE TEST PORT How to Use the Smoke Test Port
- Put detector into Speed-Up Test mode
- a. Press and hold Test/Reset button for 2 to 7 seconds
- b. When in Speed-Up Test mode sensor LEDs will alternately fl ash Red and Green
- Lift tethered plug sealing the smoke test port via pull tab
- Spray canned smoke into the test port
- Replace tethered test plug
Simplified Options
- DUCTSD does NOT offer fi eld selectable dip switches. The simplifi ed DUCTSD offers:
- One connected sensor
- Cover Tamper switch activates 7 minutes after sensor cover has been removed or improperly seated
- Aux Relay does not switch states on a Trouble condition
Opaque Power Board Cover
- Quick reference information on the inside of the power board cover.
Device Interconnect
- Interconnect any combination of DUCTSD and D4120 detectors, up to a maximum of 30 total devices.
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Feature
| |
D4120
Sensor Technology| Photoelectric| Photoelectric
Sensor Mechanics| Plug-In| Plug-In
Number of Sensors| 1| 1 or 2 sensors
Airflow| 100 – 4000fpm| 100 – 4000fpm
Product Length| 14.38 inches| 14.38 inches
Product Width| 5 inches| 5 inches
Depth| 2.5 inches| 2.5 inches
Housing| 2 piece| 2 piece
Sampling Tubes Entry| Front and rear entry| Front and rear entry
Cover Color| Black Opaque| Transparent
Cover Connectors| 4 captive screws on sensor
3 captive screws on power board
| 4 captive screws on sensor
3 captive screws on power board
Cover Tamper Delay| 7 minutes| Selectable – Instant or 7
minutes
Conduit Openings| Top: 2 x 1/2” Side 1 x 3/4”| Top: 2 x 1/2” Side 1 x 3/4”
Wire Gauge| 12 gauge| 12 gauge
Connection Between Sensor and PowerBoard| Co-Located – Pre-wired| Co-Located –
Pre-wired
Wiring Diagram| Terminal designator by each terminal| Terminal designator by
each terminal
Voltage Range| 20-29VDC
24VAC 50-60Hz
120VAC 50-60Hz (DUCTSD)
220/240VAC 50-60Hz (DUCTSD240)
| 20-29VDC
24VAC 50-60Hz
120VAC 50-60Hz (D4120)
220/240VAC 50-60Hz (D4240)
Standby Current Consumption| 21mA| 21mA
Power Up Time| 37 seconds (initialization complete)| 37 seconds
(initialization complete)
Reset Time| 0.6 seconds| 0.6 seconds
Relays| 10A @ 30VDC/250VAC alarm 2 form C AUX 2A @ 30VDC/125VAC alarm
2A @ 30VDC/125VAC trouble
| 10A @ 30VDC/250VAC alarm 2 form C AUX 2A @ 30VDC/125VAC alarm
2A @ 30VDC/125VAC trouble
Sensor LED Functions| Standby: 5 sec green blink Maintenance: 5 sec Red blink
Trouble: No LED indication Alarm: Solid Red| Standby: 5 sec green blink
Maintenance: 5 sec Red blink Trouble: No LED indication Alarm: Solid Red
PowerBoard LED Functions| Standby: 5 sec Red blink Maintenance: 5 sec Amber
Blink Trouble: Solid Amber
Alarm: Solid red
| Standby: 5 sec Red blink Maintenance: 5 sec Amber Blink Trouble: Solid Amber
Alarm: Solid red
Shutdown on Trouble| Aux Relay does not switch states on Trouble|
Selectable
Interconnection Quantity| 30 units| 50 units
Interconnection| Non-isolated| Non-isolated
Test Features| Cover integrated smoke test port Magnet test at sensor
Pushbutton Test/Reset at PowerBoard
| Magnet test at sensor
Pushbutton Test/Reset at PowerBoard
| Responds only if sensor is not in maintenance| Responds only if sensor is
not in maintenance
Sensitivity Measurement| SENS-RDR| SENS-RDR
Accessories| Compatible with existing accessories| Compatible with existing
accessories
Filters| None| None
Temperature| – 4ºF to 158ºF (-20ºC to +70ºC)| – 4ºF to 158ºF (-20ºC to +70ºC)
Smoke Test Port| Cover integrated smoke test port| None
Documents / Resources
|
SYSTEM SENSOR DUCTSD Duct Smoke Detector Cross
Reference
[pdf] Owner's Manual
DUCTSD, D4120, DUCTSD Duct Smoke Detector Cross Reference, Duct Smoke Detector
Cross Reference, Detector Cross Reference, Cross Reference, Reference
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