System Sensor D2-AUS User manual

SS-300-023 1 I56-3641-001R
D2-AUS Duct Smoke Detector
INSTALLATION AND MAINTENANCE INSTRUCTIONS
3825 Ohio Avenue, St. Charles, Illinois 60174
www.systemsensor.com
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-AUS model is a photoelectric detector approved for an extended air
speed range of 0.5 m/s to 20.3 m/s (100 to 4000 feet per minute) and an op-
erational temperature range of −20°C to 70°C (−4°F to 158°F).
BEFORE INSTALLING
Read the System Sensor Guide for Proper Use of Smoke Detectors in Duct Appli-
cations (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. Also refer to the installation
requirements of local standards.
NOTICE: This manual shall be left with the owner/user of this equipment.
IMPORTANT: This detector must be tested and maintained regularly following
local regulations. The detector should be cleaned at least once a year.
WARNING
The National Fire Protection Association has established that DUCT DETEC-
TORS 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.
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 in-
structions 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-AUS 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 or 2151BAUS plug-in detector 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. One test magnet
4. Drilling template
5. One sampling tube end cap
6. 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.
I56-3641-001R
SPECIFICATIONS
Operating Temperature: –20° to 70° C (–4° to 158° F)
Storage Temperature: –30° to 70° C (–22° to 158° F)
Humidity: 0% to 93% Relative Humidity Non-condensing
Air Velocity: 0.5 to 20.3 m/sec. (100 to 4000 ft./min.)
Rectangular Footprint Dimensions: 37 cm L x 12.7 cm W x 6.36 cm D (14.38 in L x 5 in W x 2.5 in D)
Square Footprint Dimensions: 19.7 cm L x 22.9 cm W x 6.35 cm D (7.75 in L x 9 in W x 2.5 in D)
Weight: 0.82 kg; 1.8 pounds
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.
Nominal Sensitivity: 4.0% obs/m
Current Requirements (Using No Accessories)
Peak standby current 120µA
Average standby current 60µA
Max. alarm current 130 mA
ACCESSORY CURRENT LOADS AT 24 VDC
DEVICE STANDBY ALARM
RA400Z/RA100Z 0mA 12mA Max.
RTS451/RTS151 0mA 12mA Max.
RTS451KEY/RTS151KEY 0mA 12mA Max.
[1] LIMITATIONS OF DUCT SMOKE DETECTORS

[5] DETECTOR INSTALLATION
[5.1] VERIFY DUCT AIR FLOW DIRECTION AND VELOCITY
Model D2-AUS detectors are designed to be used in air handling systems hav-
ing air velocities of 0.5 to 20.3 m/sec. Duct widths from 15.2 cm to 3.7 m 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 45.7 cm 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.
H0550-00
[5.3] DRILL THE MOUNTING HOLES
Remove the paper backing from the mounting template supplied. Affix the tem-
plate 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 3.5 cm diameter holes using
a hole saw or punch. Drill 4.0 mm diameter holes 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 3.5 cm diameter holes us-
ing a hole saw or punch. Drill 4.0 mm diameter holes at target “C” centers. If
desired, drill an additional 4.0 mm 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 pro-
vided sheet metal screws to screw the duct detector to the duct.
CAUTION: Do not overtighten the screws.
SS-300-023 2 I56-3641-001R
[4] FIGURE 1. EXPLODED VIEW OF DUCT SMOKE DETECTOR COMPONENTS:
MAGNET TEST LOCATION
SENSOR MODULE COVER
TERMINAL HOUSING
MODULE COVER
SAMPLING TUBE EXHAUST TUBE
SENSOR HEAD
WIRING TERMINALS
(sold seperately)
H0574-01

There should be 10 to 12 holes spaced as evenly as possible across the
width of the duct. If there are more than 2 holes in the section of the
tube extending out of the duct, select a shorter tube using Table 1. Oth-
erwise, trim the tube to leave approximately 2.5 to 5.1 cm extending out-
side the duct. Plug the end with the end cap and tape closed any holes
in the protruding section of the tube. Be sure to seal the duct where the
tube protrudes.
FIGURE 4:
DETECTOR
HOLE
30.5 cm
6.4 mm
5.1 cm
1.9 cm
H0215-02
NOTE: Air currents inside the duct may cause excessive vibration, especially
when the longer sampling tubes are used. In these cases, a 7.6 cm floor flange
(available at most plumbing supply stores) may be used to fasten the sam-
pling tube to the other side of the duct. When using the flange/connector
mounting technique, drill a 2.5 to 3.2 cm hole where the flange will be used.
[6.3] MODIFICATIONS OF SAMPLING TUBES
There may be applications where duct widths are not what is specified for the
installation. In such cases, it is permissible to modify a sampling tube that is
longer than necessary to span the duct width.
Use a 5 mm diameter (#10) drill and add the appropriate number of holes so
that the total number of holes exposed to the air flow in the duct is 10 to 12.
Space the additional holes as evenly as possible over the length of the tube.
NOTE: This procedure should only be used as a temporary fix. It is not in-
tended as a permanent substitute for ordering the correct length tubes.
[6.4] REMOTE SAMPLING TUBE INSTALLATION
The detector arrangement can also incorporate the remote mounting of the
sampling tube and/or exhaust tube. In this case both the detector, sampling
tube and exhaust tube (if included) should be rigidly mounted to withstand
the pressure and vibrations caused by the air velocity. The location of the
detector’s sampling tube should be such that there is uniform airflow in the
cross section area.
The pressure differential across the sampling and exhaust ports in the detec-
tor housing shall be verified to be between 0.025 and 2.82 cm of water. Do
so by measuring the pressure difference between the inlet and outlet ports
on the detector housing using a manometer as described in Section 10.4.4 of
this manual.
[7] MEASUREMENT TESTS
[7.1] AIR FLOW
The D2-AUS is designed to operate over an extended air speed range of 0.5 to
20.3 m/sec. To verify sufficient sampling of ducted air, turn the air handler on
and use a manometer to measure the differential pressure between the two
sampling tubes. The differential pressure should measure at least 0.025 cm of
water and no more than 2.82 cm of water. Because most commercially avail-
able manometers cannot accurately measure very low pressure differentials,
applications with less than 2.5 m/sec of duct air speed may require one of the
following: 1) the use of a current-sourcing pressure transmitter (Dwyer Series
607) per Section 7.2; or 2) the use of aerosol smoke per section 10.4.4.
[7.2] LOW FLOW AIR FLOW TEST USING DWYER SERIES 607 DIF-
FERENTIAL PRESSURE TRANSMITTER
Verify the air speed of the duct using an anemometer. Air speed must be at
least 0.5 m/sec. Wire the Dwyer transmitter as shown in Figure 5. Connect the
leads of the meter to either side of the 1000Ω resistor. Allow unit to warm up
for 15 seconds. With both HIGH and LOW pressure ports open to ambient air,
measure and record the voltage drop across the 1000Ω resistor (measurement
1), 4.00 volts is typical. Using flexible tubing and rubber stoppers, connect the
[6] SAMPLING TUBE INSTALLATION
[6.1] SAMPLING TUBE SELECTION
The sampling tube must be purchased separately. Order the correct length,
as specified in Table 1, for width of the duct where it will be installed. It is
recommended that the sampling tube length extend at least 2/3 across the duct
width for optimal performance.
TABLE 1. SAMPLING TUBES RECOMMENDED FOR
DIFFERENT DUCT WIDTHS:
OUTSIDE DUCT WIDTH SAMPLING TUBE RECOMMENDED*
Up to 30 cm DST1
30 cm to 60 cm DST1.5
60 cm to 1.2 m DST3
1.2 m to 2.4 m DST5
2.4 m to 3.7 m DST10 (2-piece)
*Must extend a minimum of 2/3 the duct width
The sampling tube is always installed with the air inlet holes facing into the
air flow. To assist proper installation, the tube’s connector is marked with an
arrow. Make sure the sampling tube is mounted so that the arrow points into
the airflow as shown in Figure 3. Mounting the detector housing in a vertical
orientation is acceptable provided that the air flows directly into the sampling
tube holes as indicated in Figure 3. The sampling tube and exhaust tube
can be mounted in either housing connection as long as the exhaust tube is
mounted downstream from the sampling tube.
FIGURE 3. AIR DUCT DETECTOR SAMPLING TUBE:
SAMPLING TUBE ENDCAP
ARROW MUST FACE
INTO AIR FLOW
AIR FLOW
DIRECTION
H0551-00
CAUTION: The sampling tube end cap, included with the detector, is criti-
cal to proper operation of the duct smoke detector. The end cap is needed to
create the proper air flow to the sensor of the duct smoke detector. Once any
sampling tube length adjustments are made, plug the end of the sampling tube
with the provided end cap.
A plastic exhaust tube is included with the unit to be installed if needed.
Install into the housing connection that is downstream from the sampling
tube connection. The exhaust tube can be installed from the front of the detec-
tor or the back. A longer 30 cm exhaust tube, model ETX is available as an
accessory in cases where the molded exhaust tube does not extend at least
5.1 cm into the duct.
[6.2] SAMPLING TUBE INSTALLATION
1. For tubes shorter than the width of the duct, slide the sampling tube,
with installed end cap, into the housing connection that meets the air-
flow first. Position the tube so that the arrow points into the airflow as
shown in Figure 3. Per NFPA sampling tubes over 91 cm long should be
supported at the end opposite of the duct detector. In ducts wider than
2.4 m, work must be performed inside the duct to couple the other sec-
tion of the sampling tube to the section already installed using the 1.3 cm
conduit fitting supplied. Make sure that the holes on both sections of the
air inlet sampling tube are lined up and facing into the airflow.
2. For tubes longer than the width of the air duct, the tube should extend out
of the opposite side of the duct. Drill a 1.9 cm hole in the duct opposite
the hole already cut for the sampling tube. Ensure that the sampling tube
is angled downward from the duct smoke detector to allow for moisture
drainage away from the detector. The sampling tube should be angled
at least 6.4 mm downward for every 30.5 cm of duct width per Figure 4.
SS-300-023 3 I56-3641-001R

HIGH side of the transmitter to the sampling tube of the duct smoke detec-
tor housing, and the LOW side of the transmitter to the exhaust tube of the
duct smoke detector housing. Measure and record the voltage drop across the
1000Ω resistor (measurement 2). Subtract the voltage recorded in measure-
ment 1 from the voltage recorded in measurement 2. If the difference is greater
than 0.15 volts, there is enough air flow through the duct smoke detector for
proper operation.
FIGURE 5. PROCEDURE FOR VERIFYING AIR FLOW:
HIGH LOW
9 VOLT
BATTERY
9 VOLT
BATTERY
9 VOLT
BATTERY
TO SAMPLING TUBE
TO EXHAUST TUBE
DIFFERENTIAL
PRESSURE
TRANSMITTER
MODEL #607-01
15 TO 36
VDC SUPPLY
1000 OHM 5%
1 WATT RESISTOR
VOLT METER FLUKE
MODEL 87 OR
EQUIVALENT
+ –
H0163-01
[8] FIELD WIRING; INSTALLATION GUIDELINES
All wiring must be installed in compliance with the National Electrical Code
and the local codes having jurisdiction. Proper wire gauges should be used.
The conductors used to connect smoke detectors to control panels and acces-
sory devices should be color-coded to prevent wiring mistakes. Improper con-
nections can prevent a system from responding properly in the event of a fire.
For signal wiring, (the wiring between interconnected detectors or from detec-
tors to auxiliary devices), it is recommended that single conductor wire be no
smaller than 18 gauge. The duct smoke detector terminals accommodate wire
sizes up to 12 gauge.
Smoke detectors and alarm system control panels have specifications for al-
lowable loop resistance. Consult the control panel manufacturer’s specifica-
tions for the total loop resistance allowed for the particular model control
panel being used before wiring the detector loop.
[8.1] WIRING INSTRUCTIONS
The D2-AUS detectors are designed for easy wiring. The housing provides a
terminal strip with clamping plates. Wiring connections are made by sliding
the bare end of the wire under the plate, and tightening the clamping plate
screw. See Figure 6 below for system wiring.
[9] DETECTOR STATUS INDICATION
Detector status is indicated by the LED’s on the sensor. Refer to table below
for more details.
SS-300-023 4 I56-3641-001R
Status Sensor LEDs Designation Description/Trouble Shooting
Sensor
Initialization
Alternating red blink every
5 seconds
At power up the sensor will take approximately 30 seconds to inialize. Also occurs when
sensor is removed during a seven minute delay.
Standby Simultaneous red blink every
5 seconds
The LED on the sensor should flash approximately every 5 seconds. If the sensor LEDs
are not illuminated, then the detector lacks power (check wiring, panel or power supply).
Maintenance Not illuminated The sensor is outside of its sensitivity limits and shall be cleaned or replaced.
See Section 10.3 for details.
Alarm Solid Red The unit is in alarm.
TABLE 2. DETECTOR STATUS INDICATIONS
(+) IN (+) OUT
(+)
(+)
(–)
(–)
1ST DETECTOR
IN LOOP D2-AUS
(–)
RA400Z (OPTIONAL)
REMOTE ALARM LED
4.4 VDC NOM.
IN ALARM
(+) IN (+) OUT
(+)
(+)
(–)
LAST DETECTOR
IN LOOP D2-AUS
(–)
RA400Z (OPTIONAL)
REMOTE ALARM LED
4.4 VDC NOM.
IN ALARM
E
O
L
R
STYLE D OPTIONAL WIRING
UL/FM LISTED
COMPATIBLE 2-WIRE
CONTROL PANEL
ALARM
INITIATION
LOOP
(+)
(–)
EOL RESISTOR
SPECIFIED
BY PANEL
MANUFACTURER
RA
RA
RA
RA
(–)
~
~
~
~
(+) IN (+) OUT
(+)
(+)
(–)
(–)
2ND DETECTOR
IN LOOP D2-AUS
(–)
RA400Z (OPTIONAL)
REMOTE ALARM LED
4.4 VDC NOM.
IN ALARM
RA
RA
~
~
~
~
FIGURE 6. SYSTEM WIRING DIAGRAM FOR D2-AUS 2-WIRE DUCT SMOKE DETECTORS
(DETECTORS POWERED FROM INITIATING CIRCUIT):
CAUTION
Do not loop wire under terminals when wiring detectors. Break wire runs to provide system supervision of connections.
H0564-04

[10] VERIFICATION OF OPERATION
[10.1] POWER THE UNIT
Apply 12VDC or 24 VDC to terminals marked as + in and -, see Figure 1, and
electrical specs for details.
[10.2] PERFORM DETECTOR CHECK
VERIFY STANDBY per Table 2 on page 4. The use of a remote accessory is
recommended.
[10.3] SENSITIVITY VERIFICATION
The sensitivity of the sensor is confirmed to be operating within its allowable
range each time the sensor LEDs blink red every 5 seconds. Note in a mainte-
nance condition the sensor LEDs will not be illuminated as depicted in Table
2. The maintenance condition indicates that the sensor is operating outside its
original factory preset sensitivity and shall be cleaned or replaced. See Section
9 for reference. This is a valid UL test.
The SENS-RDR sensitivity reader can also be used to measure the sensitivity
of the sensor. Sensitivity testing shall not be used as a substitute for alarm
testing.
[10.4] DUCT SMOKE DETECTOR TEST AND
MAINTENANCE PROCEDURES
Test and maintain duct smoke detectors as recommended in NFPA 72. The
tests contained in this manual were devised to assist maintenance personnel
in verification of proper detector operation.
Before conducting these tests, notify the proper authorities that the smoke
detection system will be temporarily out of service. Disable the zone or system
under test to prevent unwanted alarms.
[10.4.1] ALARM TESTS
1a. M02-04-00 Magnet Test - Place the painted surface of the magnet onto
the MAGNET TEST location on the sensor cover of unit (Figure 1).
OR
1b. Remote Test Accessory - See list on page 1.
The red LEDs on the sensor should latch on, as should any accesso-
ries (i.e. RA400Z/RA100Z, RTS451/RTS151). Verify system control panel
alarm status and control panel execution of all intended auxiliary func-
tions (i.e. fan shutdown, damper control, etc.)
2. The detector must be reset by the system control panel, or remote test
accessory
[10.4.2] VERIFY AIRFLOW TEST PER SECTION 7 HAS BEEN
PERFORMED.
[10.4.3] SMOKE RESPONSE TESTS
To determine if smoke is capable of entering the sensing chamber, visually
identify any obstructions. Plug the exhaust and sampling tube holes to pre-
vent ducted air from carrying smoke away from the detector head, then blow
smoke such as cigarette, cotton wick, or punk directly at the head to cause
an alarm. REMEMBER TO REMOVE THE PLUGS AFTER THIS TEST, OR THE
DETECTOR WILL NOT FUNCTION PROPERLY.
[10.4.4] SMOKE ENTRY USING AEROSOL SMOKE
This test is intended for low-flow systems 0.5 - 2.5 m/sec. If the air speed is
greater than 2.5 m/sec, use a conventional manometer to measure differential
pressure between the sampling tubes, as described in 7.1.
Drill a 6.4 mm hole 1 meter upstream from the duct smoke detector. With
the air handler on, measure the air velocity with an anemometer. Air speed
must be at least 0.5 m/sec. Spray aerosol smoke* into the duct through the
6.4 mmhole for five seconds. Wait two minutes for the duct smoke detector
to alarm. If the duct smoke detector alarms, air is flowing through the detec-
tor. Remove the duct smoke detector cover and blow out the residual aerosol
smoke from the chamber and reset the duct smoke detector. Use duct tape to
seal the aerosol smoke entry hole.
*Aerosol smoke can be purchased from Home Safeguard Industries at home-
safeguard.com, model 25S Smoke Detector Tester, and Chekkit Smoke Detector
Tester model CHEK02 and CHEK06 available from SDi. When used properly,
the canned smoke agent will cause the smoke detector to go into alarm. Re-
fer to the manufacturer’s published instructions for proper use of the canned
smoke agent.
CAUTION
Canned aerosol simulated smoke (canned smoke agent) formulas will vary
by manufacturer. Misuse or overuse to these products may have long term
adverse effects on the smoke detector. Consult the canned smoke agent man-
ufacturer’s published instructions for any further warnings or caution state-
ments.
[10.5] INSTALL THE COVER
Install the covers making sure that the cover fits into the base groove. Tighten
the seven screws that are captured in the covers.
NOTE: Verify sensor cover gasket is properly seated on cover prior to cover
installation
[11] DETECTOR CLEANING PROCEDURES
Notify the proper authorities that the smoke detector system is undergoing
maintenance, and that the system will temporarily be out of service. Disable
the zone or system undergoing maintenance to prevent unwanted alarms and
possible dispatch of the fire department.
FIGURE 7. DETECTOR SENSOR EXPLODED VIEW:
SENSOR
COVER
SENSING
CHAMBER
COVER AND
SCREEN
SENSOR
CHAMBER
COVER
REMOVAL
TABS
C1009-00
[11.1] DETECTOR SENSOR
1. Remove the sensor to be cleaned from the system.
2. Remove the sensor cover by pressing firmly on each of the four removal
tabs that hold the cover in place. See Figure 7.
3. Vacuum the screen carefully without removing it. If further cleaning is
required continue with Step 4, otherwise skip to Step 7.
4. Remove the chamber cover/screen assembly by pulling it straight out.
5. Use a vacuum cleaner or compressed air to remove dust and debris from
the sensing chamber.
6. Reinstall the chamber cover/screen assembly by sliding the edge over the
sensing chamber. Turn until it is firmly in place.
7. Replace the cover using the LEDs to align the cover and then gently
pushing it until it locks into place.
8. Reinstall the detector.
[11.2] REINSTALLATION
1. Reinstall the detector in its housing.
2. Restore system power.
3. Perform Detector Check, Section [10.2].
4. Notify the proper authorities testing has been completed and the smoke
detector system is back in operation.
[12] SENSOR REPLACEMENT (PART NO. 2151 OR 2151BAUS)
1. Remove the sensor head by rotating counterclockwise.
2. Pull gently to remove it.
3. To replace the sensor head, align the mounting features and rotate clock-
wise into place.
SS-300-023 5 I56-3641-001R

FIGURE 10. WIRING DIAGRAM FOR RTS451/RTS151/RTS451KEY/RTS151KEY REMOTE TEST STATION TO
2-WIRE D2-AUS DUCT DETECTOR:
24 VAC (+10%, –15%)
FULL WAVE RECTIFIED,
UNFILTERED POWER
MAY BE USED
RTS451/RTS451KEY
(OPTIONAL) REMOTE
TEST STATION
MAGNET
TEST
SWITCH
ALARM
LED (RED)
4
5
2
1(+)
(–)
+ RA
+ RTS
– RA
+ TEST COIL
– TEST COIL
+ IN
+ OUT
–
(–)
(+)
D2-AUS
24 VDC
AUX POWER
SUPPLIED
BY USER
(100mA
SUPPLY)
RTS451/RTS451KEY
(OPTIONAL) REMOTE
TEST STATION
24 VAC (+10%, –15%)
FULL WAVE RECTIFIED,
UNFILTERED POWER
MAY BE USED
MAGNET
TEST
SWITCH
ALARM
LED (RED)
4
5
2
1(+)
(–)
+ RA
+ RTS
– RA
+ TEST COIL
– TEST COIL
+ IN
+ OUT
–
24 VDC
AUX POWER
SUPPLIED
BY USER
(100mA
SUPPLY)
D2-AUS
NOTE: THE USE OF EITHER THE RTS451 OR RTS451KEY REQUIRES THE INSTALLATION OF AN ACCESSORY COIL, DCOIL, SOLD
SEPARATELY. SEE FIGURE 9 ABOVE FOR REFERENCE.
METHOD #1 - AUX POWER LOCATED
AT DUCT DETECTOR
METHOD #2 - AUX POWER LOCATED
AT TEST STATION
H0612-13
SS-300-023 6 I56-3641-001R
©2010 System Sensor
THREE-YEAR LIMITED WARRANTY
System Sensor warrants its enclosed product to be free from defects in materials and
workmanship under normal use and service for a period of three years from date of
manufacture. System Sensor makes no other express warranty for the enclosed product.
No agent, representative, dealer, or employee of the Company has the authority to in-
crease or alter the obligations or limitations of this Warranty. The Company’s obligation
of this Warranty shall be limited to the replacement of any part of the product which
is found to be defective in materials or workmanship under normal use and service
during the three year period commencing with the date of manufacture. After phoning
System Sensor’s toll free number 800-SENSOR2 (736-7672) for a Return Authorization
number, send defective units postage prepaid to: System Sensor, Returns Department, RA
#__________, 3825 Ohio Avenue, St. Charles, IL 60174. Please include a note describing
the malfunction and suspected cause of failure. The Company shall not be obligated to
replace units which are found to be defective because of damage, unreasonable use,
modifications, or alterations occurring after the date of manufacture. In no case shall the
Company be liable for any consequential or incidental damages for breach of this or any
other Warranty, expressed or implied whatsoever, even if the loss or damage is caused by
the Company’s negligence or fault. Some states do not allow the exclusion or limitation of
incidental or consequential damages, so the above limitation or exclusion may not apply
to you. This Warranty gives you specific legal rights, and you may also have other rights
which vary from state to state.
Please refer to insert for the Limitations of Fire Alarm Systems
[13] OPTIONAL ACCESSORIES
The D2-AUS duct smoke detector can be used with the RA400Z/RA100Z,
RTS451/RTS151, or RTS451KEY/RTS151KEY remote test station.
FIGURE 8. WIRING DIAGRAMS FOR OPTIONAL ACCESSORIES:
ALARM +
AUX OUT –
15
20
(+)
(–)
RED
RA400Z
(OPTIONAL)
REMOTE (LED)
ANNUNCIATOR
D2-AUS
DUCT DETECTOR
H0611-04
[13.1] RTS451/RTS151/RTS451KEY/RTS151KEY REMOTE TEST
STATION
The RTS451/RTS151/RTS451KEY/RTS151KEY Remote Test Station facilitates
test of the alarm capability of the duct smoke detector as indicated in the
RTS451/RTS151/RTS451KEY/RTS151KEY manual. The D2-AUS duct smoke de-
tector must be reset by the system control panel. If a system control panel is
used, the panel itself may also require testing.
To install the RTS451/RTS151/RTS451KEY/RTS151KEY, connect the device as
shown in Figure 10 on page 6; wire runs must be limited to 25 ohms or less
per interconnecting wire.
NOTE: The use of a remote test station requires the installation of an acces-
sory coil, part number DCOIL, sold separately. See Figure for reference.
1) Install DCOIL in housing pocket insuring that arrow is pointing toward detector
2) Install DCOIL mounting screw
3) Connect each DCOIL lead to a Test Coil Terminal
FIGURE 9. D2-AUS WITH OPTIONAL TEST COIL:
H0561-00
TEST COIL TERMINALS
TEST COIL
TEST COIL SCREW