System Sensor D2 User Manual
INSTALLATION AND MAINTENANCE INSTRUCTIONS
WARNING
3825 Ohio Avenue, St. Charles, Illinois 60174
1-800-SENSOR2, FAX: 630-377-6495
D2 Duct Smoke Detector
SPECIFICATIONS
Operating Temperature: –4° to 158° F (–20° to 70° C)
Storage Temperature: –22° to 158° F (–30° to 70° C)
Humidity: 0% to 93% Relative Humidity Non-condensing
Air Velocity: 100 to 4000 ft./min. (0.5 to 20.3 m/sec.)
Rectangular Footprint Dimensions: 14.38 in L x 5 in W x 2.5 in D (37 cm L x 12.7 cm W x 6.36 cm D)
Square Footprint Dimensions: 7.75 in L x 9 in W x 2.5 in D (19.7 cm L x 22.9 cm W x 6.35 cm D)
Weight: 1.8 pounds; 0.82 kg
Electrical
Power supply voltage: 8.5-35 VDC
Input capacitance: 0.1 µF max.
Reset Voltage: 2.5 VDC min.
Reset Time (with RTS451/RTS151): .03 to 0.3 sec.
Reset Time (by power down): 0.3 sec. max.
Power Up Time: 35 sec. max.
Alarm response time: 15 sec.
Sensitivity Test: See detector label
Current Requirements (Using No Accessories)
Peak standby current 120µA
Average standby current 60µA
Max. alarm current 130 mA
Table of Contents Page
[1] Limitations of Duct Smoke Detectors .........................1
[2] General Description .....................................1
[3] Contents of the Duct Smoke Detector Kit ......................1
[4] Exploded View of Duct Smoke Detector Components .............2
[5] Detector Installation .....................................2
[6] Sampling Tube Installation ................................3
[7] Measurement Tests ......................................3-4
[8] Field Wiring ...........................................4
[9] Detector Status Indicator ..................................4
[10] Verification of Operator ..................................5
[11] Dectector Cleaning Procedures .............................5
[12] Sensor Replacement ....................................6
[13] Optional Accessories ....................................6
Wiring Diagrams ..........................................4,6
Warranty .............................................6
The D2 model is a photoelectric detector approved for an extended air speed
range of 100 to 4000 feet per minute (0.5 m/s to 20.3 m/s) and an operational
temperature range of −4°F to 158°F (−20°C to 70°C).
BEFORE INSTALLING
Read the System Sensor Guide for Proper Use of Smoke Detectors in Duct Applications (A05-1004), which provides detailed information on detector spacing,
placement, zoning, wiring, and special applications. Copies of this manual
are available online at www.systemsensor.com. NFPA Standards 72 and 90A
should also be referenced for detailed information.
NOTICE: This manual shall be left with the owner/user of this equipment.
IMPORTANT: This detector must be tested and maintained regularly following
NFPA 72 requirements. The detector should be cleaned at least once a year.
[1] LIMITATIONS OF DUCT SMOKE DETECTORS
The National Fire Protection Association has established that DUCT DETECTORS MUST NOT BE USED AS A SUBSTITUTE FOR OPEN AREA DETECTOR
PROTECTION as a means of providing life safety. Nor are they a substitute for
early warning in a building’s regular fire detection system.
System Sensor supports this position and strongly recommends that the user
read NFPA Standards 90A, 72, and 101. The D2 Air Duct Smoke Detectors are
listed per UL 268A.
SS-300-014 1 I56-3050-004R
DEVICE STANDBY ALARM
RA400Z/RA100Z 0mA 12mA Max.
RTS451/RTS151 0mA 12mA Max.
RTS451KEY/RTS151KEY 0mA 12mA Max.
This device will not operate without electrical power. Fire situations may
cause an interruption of power. The system safeguards should be discussed
with your local fire protection specialist.
This device will not sense smoke unless the ventilation system is operating
and the cover is installed.
For this detector to function properly, it MUST be installed according to the instructions in this manual. Furthermore, the detector MUST be operated within
ALL electrical and environmental specifications listed in this manual. Failure
to comply with these requirements may prevent the detector from activating
when smoke is present in the air duct.
[2] GENERAL DESCRIPTION
Smoke introduced into the air duct system will be distributed throughout the
entire building. Smoke detectors designed for use in air duct systems are used
to sense the presence of smoke in the duct.
Model D2 Duct Smoke Detector utilizes photoelectric technology for the detection of smoke. This detection method, when combined with an efficient
housing design, samples air passing through the duct allowing detection of a
developing hazardous condition. When sufficient smoke is sensed, an alarm
signal is initiated and appropriate action can be taken to shut off fans,
blowers, change over air handling systems, etc. These actions can facilitate
the management of toxic smoke and fire gases throughout the areas served
by the duct system.
[2.1] DETECTOR FEATURE SET
- Utilizes 2151 plug-in head
- Sampling tubes installed from front or rear
- Compatible with existing accessories
[3] CONTENTS OF THE DUCT SMOKE DETECTOR KIT
1. Sensor/power board assembly and covers
2. Three #10 sheet metal screws for mounting
3. Drilling template
4. One sampling tube end cap
5. One plastic exhaust tube
NOTE: A sampling tube must be ordered to complete the installation. It must
be the correct length for the width of the duct where it will be installed. See Table 1 on page 3 to determine the inlet tube required for different duct widths.
ACCESSORY CURRENT LOADS AT 24 VDC
www.systemsensor.com
I56-3050-004R
[4] FIGURE 1. EXPLODED VIEW OF DUCT SMOKE DETECTOR COMPONENTS:
SAMPLING TUBE
(sold seperately)
EXHAUST TUBE
SENSOR HEAD
SENSOR MODULE COVER
MAGNET TEST LOCATION
WIRING TERMINALS
[5] DETECTOR INSTALLATION
[5.1] VERIFY DUCT AIR FLOW DIRECTION AND VELOCITY
Model D2 detectors are designed to be used in air handling systems having air
velocities of 100 to 4000 feet per minute. Duct widths from 6 inches to 12 feet
can be accommodated. Be sure to check engineering specifications to ensure
that the air velocity in the duct falls within these parameters. If necessary, use
a velocity meter (anemometer) to check the air velocity in the duct.
[5.2] DETERMINE MOUNTING LOCATION
AND CONFIGURATION
On ducts wider than 18 inches it is recommended that the detector be
mounted downstream of a bend, obstruction in the duct, or the supply or
return air inlet.
Exception: Installation of duct detectors can be on or within a commercial
packaged rooftop heating and air-conditioning system, fire/smoke dampers
and economizers. They may be mounted in either the supply and/or return air
section as determined by local code.
Once a suitable location is selected, determine if the detector is to be mounted
in a side-by-side “rectangular” configuration or a top-over-bottom “square”
configuration as shown in Figure 2. If mounting in the square configuration,
remove the rear attachment screw, rotate the unit at hinge, and replace the
screw into the new attachment hole as shown in Figure 2. Do NOT remove
the hinge screw during this process. Final installation approval shall be based
upon passing section 10.4.2 and 10.4.4 tests.
FIGURE 2:
REMOVE SCREW AND PIVOT
DETECTOR AS SHOWN BELOW.
REPLACE SCREW
TO SECURE DETECTOR
IN PLACE.
TERMINAL HOUSING
MODULE COVER
H0574-05
[5.3] DRILL THE MOUNTING HOLES
Remove the paper backing from the mounting template supplied. Affix the template to the duct at the desired mounting location. Make sure the template lies
flat and smooth on the duct.
[5.3.1] FOR RECTANGULAR SIDE-BY-SIDE MOUNTING CONFIGURATION:
Center punch at (4) target centers: (2) “A” for sampling tubes and (2) “B” for
the rectangular configuration mounting tabs as shown on mounting template.
Drill pilot holes at target “A” centers and cut two 1.375 inch diameter holes using a 13/8 inch hole saw or punch. Drill .156 inch diameter holes using a 5/32”
inch drill at target “B” centers.
[5.3.2] FOR SQUARE TOP-OVER-BOTTOM MOUNTING CONFIGURATION:
Center punch at (4) target centers: (2) “A” for sampling tubes and (2) “C” for
the square configuration mounting tabs as shown on mounting template. Drill
pilot holes at target “A” centers and cut two 1.375 inch diameter holes using a
13/8” inch hole saw or punch. Drill .156 inch diameter holes using a 5/32 inch
drill at target “C” centers. If desired, drill an additional .156 inch hole at the
location of one of the mounting tabs on the lower housing.
[5.4] SECURE THE DUCT DETECTOR TO THE DUCT
Use two (rectangular configuration) or three (square configuration) of the provided sheet metal screws to screw the duct detector to the duct.
CAUTION: Do not overtighten the screws.
H0550-00
SS-300-014 2 I56-3050-004R
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