System Sensor Smoke Alarm DH200RPL User Manual

INSTALLATION AND MAINTENANCE INSTRUCTIONS  
DH200RPL Intelligent Air Duct Smoke Detector  
with Extended Air Speed Range  
3825 Ohio Avenue, St. Charles, Illinois 60174  
800/736-7672, FAX: 630-377-6495  
Before installing detectors, please thoroughly read the NEMA Guide for  
Proper Use of Smoke Detectors in Duct Applications, which provides  
detailed information on detector spacing, placement, zoning, wiring,  
and special applications. Copies of this manual are available from  
NEMA (National Electrical Manufacturers Association, 2101 L Street NW,  
Washington, DC 20037). NFPA Standards 72 and 90A should also be ref-  
erenced for detailed information.  
The DH200RPL air duct smoke detector is photoelectric detector. This  
smoke detection method combines with an efficient housing design that  
samples air passing through a duct and allows detection of a developing  
hazardous condition. When sufficient smoke is sensed, an alarm signal is  
initiated at the fire control panel monitoring the detector, and appropriate  
action can be taken to shut off fans, blowers and change over air handling  
systems, etc. This can prevent the distribution or it can isolate toxic smoke  
and fire gases throughout the areas served by the duct system.  
NOTICE: This manual shall be left with the owner/user of this  
equipment.  
Two LEDs on each detector may illuminate, if programmed by the system  
control panel, to provide a local alarm indication. There is also a remote  
alarm output for use with auxiliary devices. The DH200RPL has remote  
test capability with the RTS451/RTS451KEY Remote Test Station.  
IMPORTANT: This detector must be tested and maintained regularly fol-  
lowing NFPA 72 requirements. The detector should be cleaned at least  
once a year.  
The DH200RPL incorporates a cover tamper feature. When the cover is  
removed for more than 20 minutes, the unit loses communication at the  
panel, a trouble is indicated at the panel and the alarm relay switches  
states thereby shutting down fans, dampers and blowers. In the case  
when the sensor is removed or when there is no power to the unit, only a  
trouble is indicated at the panel (alarm relay does not work any longer).  
General Description  
An HVAC system supplies conditioned air to virtually every area of  
a building. Smoke introduced into this air duct system is distrib-  
uted to the entire building. Smoke detectors designed for use in air  
duct systems are used to sense the presence of smoke in the duct.  
Contents of the Duct Smoke Detector Housing Kit  
The DH200RPL Duct Smoke Detector consists of the following items  
(See Figure 1.):  
Contents Of The Duct Smoke Detector  
1. Complete duct smoke detector assembly with  
sensor  
Figure 1. Exploded View Of Duct Smoke Detector Components:  
1
2. Two #10 x 1 ⁄4sheet metal mounting screws  
FOAM  
GASKETS  
3. Two sampling tube filters  
4. One test magnet  
CONDUIT HOLES  
DETECTOR  
5. Drilling template  
SAMPLING TUBE  
FILTERS  
HOUSING  
6. Two foam gaskets  
7. Four #6-self tapping mounting screws for the  
sampling tube and optional exhaust tube  
extension  
SAMPLING TUBE  
TERMINAL STRIP  
POWER BOARD  
8. One sampling tube end cap  
9. One plastic sampling tube  
10. One #8 self-tapping screw for plastic sampling  
tube  
COVER MOUNTING  
SCREWS  
DETECTOR BOARD  
NOTE: A detector sensor board DOES NOT need to  
be ordered separately.  
DETECTOR  
COVER  
1
NOTE:  
For ducts over 1 ⁄2 feet (0.46m), longer sampling tubes must be ordered to complete the installation. They must be the correct length for the  
width of the duct where they will be installed. See Table 1 on page 3 to determine the sampling tube required for different duct widths.  
D200-39-00  
1
I56-1977-004R  
 
2. Slide the tube into the housing bushing that meets the air flow first.  
Position the tube so that the arrow points into the air flow, as shown  
in Figure 4.  
Figure 5. Tube mounting configurations with varying  
air flow direction:  
DOTS INDICATE POSITION OF  
SAMPLING TUBE HOLES  
3. Secure the tube flange to the housing bushing with two #6 self-tapping  
screws.  
AIR FLOW  
AIR FLOW  
DIRECTION  
DIRECTION  
DETECTOR  
HOUSING  
DETECTOR  
HOUSING  
4. For tubes longer than the width of the air duct, the tube should extend  
out of the opposite side of the duct. If there are more than 2 holes in  
the section of the tube extending out of the duct, select a different  
length using Table 1. Otherwise, trim the end of the tube protruding  
through the duct so that 1to 2(25 to 50mm) of the tube extend  
outside the duct. Plug this 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.  
B.  
A.  
SAMPLING  
TUBE  
EXHAUST  
TUBE  
EXHAUST  
TUBE  
SAMPLING  
TUBE  
HORIZONTAL MOUNTING OF HOUSING  
DETECTOR  
HOUSING  
EXHAUST  
TUBE  
AIR FLOW  
DIRECTION  
AIR FLOW  
DIRECTION  
NOTE: The sampling tube end cap is critical to the proper operation of the  
duct smoke detectors. The end cap is needed to create the proper air flow  
to the sensor of the duct smoke detector.  
SAMPLING  
DETECTOR  
HOUSING  
TUBE  
D.  
C.  
VERTICAL MOUNTING OF HOUSING  
NOTE: Only metal sampling tubes can be installed in  
orientations C and D.  
Figure 3. Installation of foam gaskets over  
sampling tube bushings:  
SCREW HOLES FOR  
ATTACHING HOUSING  
TO DUCT WORK.  
[4.2] Installation For Ducts More Than 8 Feet (2.4m) Wide  
NOTE:  
To install sampling tubes in ducts more than 8 feet (2.4m) wide,  
work must be performed inside the air duct. Sampling of air in  
ducts wider than 8 feet (2.4m) is accomplished by using the  
ST-10 sampling tube. If the tube is shorter than the width of the  
air duct, install the end cap into the sampling tube as shown  
in Figure 4 and support the end opposite the duct smoke detec-  
tor.  
Install the sampling tube as follows:  
3
1. Drill a ⁄4-inch (19mm) hole in the duct directly opposite the hole  
Table 1. Sampling tubes recommended for different  
duct widths:  
already drilled for the sampling tube. Make sure the hole is 1to 2″  
(25 to 50mm) below the inlet hole on the opposite side of the duct to  
allow for moisture drainage.  
Outside Duct Width  
1 to 2 ft. (0.3 to 0.6 m)  
2 to 4 ft. (0.6 to 1.2 m)  
4 to 8 ft. (1.2 to 2.4 m)  
8 to 12 ft. (2.4 to 3.7 m)  
Sampling Tube Recommended*  
ST-1.5  
ST-3  
2. Slide the sampling tube with the flange into the housing bushing that  
meets the air flow first. Position the tube so that the arrow points into  
the air flow. Secure the tube flange to the housing bushing with two  
#6 self-tapping screws.  
ST-5  
ST-10  
*Must extend a minimum of 23 the duct width  
3. From inside the duct, couple the other sections of the sampling tube  
to the section already installed using the 12-inch conduit fittings sup-  
plied. Make sure that the holes on both of the sampling tubes are lined  
up and facing into the air flow.  
Figure 4. Air duct detector sampling tube:  
AIR HOLES  
FLANGE  
SAMPLING  
TUBE  
END CAP  
4. Trim the end of the tube protruding through the duct so that 1to 2″  
(25 to 50mm) of the tube extend outside the duct. Plug this 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.  
ARROW  
NOTE:  
An alternate method to using the ST-10 is to use two ST-5 sam-  
pling tubes. Remove the flange from one of the tubes and install  
as described above. After the installation, use electrical tape to  
close off some of the sampling holes so that there are a total of  
10 to 12 holes spaced as evenly as possible across the width of  
the duct.  
AIR FLOW DIRECTION  
MUST FACE  
INTO AIR FLOW  
H0108-02  
D200-39-00  
3
I56-1977-004R  
 
NOTE:  
Air currents inside the duct may cause excessive vibration,  
especially when the longer sampling tubes are used. In these  
cases a 3 inch (75mm) floor flange (available at most plumb-  
ing supply stores) may be used to fasten the sampling tube to  
the other side of the duct. When using the flange/connector  
Two LEDs on each duct smoke detector may light, if programmed by the  
system control panel, to provide a local, visible indication. Remote LED  
annunciator capability is available as an option. Each duct smoke detector  
can only be wired to one remote accessory.  
1
mounting technique, drill a 1-inch to 1 4-inch (25 to 32mm)  
Different panel manufacturers offer different feature sets across their dif-  
ferent panel models. As a result, certain features of the DH200RPL may be  
available on some control panels, but not on others. The possible features  
available in the DH200RPL, if supported by the control panel are:  
hole where the flange will be used.  
[5] Install The Filters  
To install the sampling tube filters, simply push the filters into the sam-  
pling and exhaust tube holes, as shown in Figure 6. If a metal sampling  
tube is used, install the filters into the tube end.  
1. Panel controls the LED operation on sensor. Operational modes are  
RED blink, RED continuous, and off.  
2. The remote output of the RA400Z does not follow the condition of the  
duct smoke detector LED while in standby. When in alarm, the LED  
output of the detector and remote will be identical.  
CAUTION  
Filters require periodic cleaning or replacement, depending on the amount  
of dust and dirt accumulated. Visually inspect the filters at least quarterly;  
inspect them more often if the dust accumulation warrants it. See Section  
[9.1.2] for more information. Replacement filters can be ordered (filter  
P/N F36-09-11).  
Please refer to the operation manual for the UL  
listed control panel for specific operation of the DH200RPL.  
Wiring Instructions  
Disconnect power from the communication line before installing the  
Figure 6. Sampling tube filter installation:  
DH200RPL duct smoke detector.  
Wire the DH200RPL duct smoke detector per the Control Panel Installation  
Manual and Figures 9, 10 or 11.  
Set the desired address on the sensor board address code wheel switches  
(see Figure 7).  
[6] 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 accessory devices should be color-coded to prevent wiring  
mistakes. Improper connections can prevent a system from responding  
properly in the event of a fire.  
Figure 7. Rotary Address Switches  
[7] Perform Detector Check  
1. Perform STANDBY AND TROUBLE TEST per Section [9.2.1].  
2. Perform MAGNET TEST per Section [9.2.2.1]. The  
RTS451 test of Section [9.2.2.2] may substitute for this requirement.  
3. Perform AIR FLOW TEST per Section [9.1].  
For signal wiring, (the wiring between detectors or from detectors to auxil-  
iary devices), it is usually recommended that single conductor wire be no  
smaller than 18 gauge. The duct smoke detector terminals accommodate  
wire sizes up to 12 gauge. The last foot (0.3m) of conduit should be flex-  
ible conduit (available in electrical supply houses), which facilitates easier  
installation and puts less strain on the conduit holes in the housing. Solid  
conduit connections may be used if desired.  
4. Perform SMOKE RESPONSE TEST per Section [9.1.1].  
[8] Install The Cover  
Install the cover using the six screws that are captured in the housing  
cover. Be certain filters are installed as specified in Section [5]. Make sure  
that the cover fits into the base groove and that all gaskets are in their  
proper positions. Tighten the six screws.  
Smoke detectors and alarm system control panels have specifications for  
Signaling-Line Circuit (SLC) wiring. Consult the control panel manufactur-  
er’s specifications for wiring requirements for the particular model control  
panel being used before wiring the detector loop.  
[9] Duct Smoke Detector Maintenance and Test Procedures  
Test and maintain duct smoke detectors as recommended in NFPA 72. The  
tests contained in this manual were devised to assist maintenance person-  
nel in verification of proper detector operation.  
The DH200RPL detector is designed for ease of wiring. The housing  
provides a terminal strip with clamping plates. Wiring connections are  
made by stripping about 38-inch (9mm) of insulation from the end of the  
wire, sliding the bare end under the plate, and tightening the clamping  
plate screw.  
Before conducting these tests, notify the proper authorities that the smoke  
detection system will be temporarily out of service. Disable the device or  
system under test to prevent unwanted alarms.  
D200-39-00  
4
I56-1977-004R  
 
[9.1] Smoke Entry Tests  
[9.1.4] Air Flow Test using Dwyer Series 607 Differential Pressure  
Transmitter  
[9.1.1] Air Flow  
This product is designed to operate over an extended air speed range of 100  
to 4000 FPM. To verify sufficient sampling of ducted air, turn the air han-  
dler on and use a manometer to measure the differential pressure between  
the two sampling tubes. The differential pressure should measure at least  
0.0015 inches of water and no more than 1.2 inches of water. Because most  
commercially available manometers cannot accurately measure very low  
pressure differentials, applications with less than 500 FPM of duct air speed  
may require one of the following: 1) the use of a current-sourcing pressure  
transmitter (Dwyer Series 607) per Section 9.1.4 or; 2) the use of aerosol  
smoke per section 9.1.2.  
Verify the air speed of the duct using an anemometer. Air speed must be at  
least 100 FPM. Wire the Dwyer transmitter as shown in Figure 8. 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 HIGH side of the transmitter to the sampling  
tube of the duct smoke detector housing, and the LOW side of the trans-  
mitter 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 measurement 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.  
[9.1.2] Air Flow Test using Aerosol Smoke  
This test is intended for low-flow systems (100-500 FPM). If the air speed  
is greater than 500 FPM, use a conventional manometer to measure differ-  
ential pressure between the sampling tubes, as described in 9.1.1.  
Figure 8. Procedure for verifying air flow:  
TO SAMPLING TUBE  
1
Drill a 4hole 3 feet upstream from the duct smoke detector. With the  
TO EXHAUST TUBE  
air handler on, measure the air velocity with an anemometer. Air speed  
must be at least 100 FPM. Spray aerosol smoke* into the duct through the  
14hole for five seconds. Wait two minutes for the duct smoke detector  
to alarm. If the duct smoke detector alarms, air is flowing through the  
detector. 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.  
HIGH  
LOW  
DIFFERENTIAL  
PRESSURE  
TRANSMITTER  
MODEL #607-01  
15 TO 36VDC  
SUPPLY  
9 VOLT  
BATTERY  
9 VOLT  
BATTERY  
1000 OHM 5% 1 WATT RESISTOR  
9 VOLT  
BATTERY  
*Aerosol smoke can be purchased from Home Safeguard Industries,  
Malibu, CA. Phone: 310/457-5813.  
VOLT METER  
FLUKE MODEL 87  
OR EQUIVALENT  
[9.1.3] Smoke Entry Test  
To determine if smoke is capable of entering the sensing chamber, visually  
identify any obstructions. Plug the exhaust and sampling tube holes to  
prevent 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.  
H0163-01  
[9.1.5] Filter Replacement  
The filters do not substantially affect smoke performance even when up  
to 90% of the filter is clogged. Quarterly visual inspection usually suf-  
fices to determine whether the filters should be replaced because only a  
high percentage of contamination affects performance. If further testing  
is required, compare differential pressure readings with and without the  
filters installed. If the difference exceeds 10% replace the filters. In no case  
should the pressure differential fall below 0.0015 inches of water.  
Figure 9. Wiring Diagram for DH200RPL Duct Smoke Detector using a UL listed control panel:  
NOTE: Jumper J1 shunt must be installed for 2-W applications. J1 shunt must be removed for power PCB supervision.  
NOTE: J1 JUMPER MUST  
BE INSTALLED FOR 2W  
APPLICATIONS. THE  
J1 JUMPER MUST BE  
REMOVED FOR POWER  
BOARD SUPERVISION.  
1
2
1
2
+
COMMUNICATION  
LINE  
UL LISTED CONTROL  
PANEL  
J1 JUMPER  
1ST DETECTOR  
IN LOOP  
J1 JUMPER  
2ND DETECTOR  
IN LOOP  
D200-39-00  
5
I56-1977-004R  
 
[9.2] Standby, Alarm, And Sensitivity Tests  
[9.2.1] Standby And Trouble  
Figure 10. Wiring Diagram for DH200RPL Duct  
Detector with optional RA400Z:  
Standby —  
If the system control panel is programmed, look for the  
presence of the flashing LEDs through the transparent  
housing cover. The LED will flash with each communicat-  
ion.  
RA400Z  
5 7  
DO NOT BREAK TAB ON RA400Z  
Trouble —  
If the detector LEDs do not flash, then the de-tector lacks  
power (check wiring, panel pro-gramming, or power sup  
ply), the detector board is missing (replace), or the unit  
is defec-tive (return for repair). Additionally, if the cover  
is removed for more than 20 minutes, the LEDs of the  
detector will not flash.  
5 = Alarm Signal  
7 = Aux. Power (–)  
Test —  
The trouble condition can be caused intentionally to veri-  
fy correct operation of the system. Remove the detector  
board to cause a trouble condition locally and at the sys-  
tem control panel.  
Figure 11. System Wiring Diagram for DH200RPL  
Duct Smoke Detector with RTS451/RTS451KEY:  
RTS 451/RTS451KEY  
[9.2.2] Alarm Tests  
1
[9.2.2.1] M02-04-00 Magnet Test  
ALARM SIGNAL  
1. Place the painted surface of the magnet onto the TEST locator on the  
bottom of the detector housing (Figure 13).  
3
NOT USED  
5
7
4
3
6
2
4
5
2. Verify system control panel alarm status and control panel execution  
of all intended auxiliary functions (i.e. fan shutdown, damper control,  
etc.)  
ALARM SIGNAL  
AUX. POWER (–)  
NOT USED  
CIRCUIT  
REFERENCE  
TEST +  
TEST –  
3. The detector is self-restoring when the magnet is removed. Verify that  
the system control panel has reset; panel may have to be reset.  
TEST  
SWITCH  
Figure 13. Testing detector alarm:  
FOR RTS451, TERMINAL 3 IS NOT  
USED. (RTS451 DOES NOT HAVE  
A TERMINAL 6.) FOR RTS451KEY,  
TERMINALS 3 AND 6 ARE NOT USED.  
Figure 12. Wiring Diagram for DH200RPL with  
optional PA400:  
PA400  
5 7  
Figure 14. Insulator Card for DH200RPL Duct Smoke  
Detector:  
5 = Alarm Signal  
7 = Aux. Power (–)  
D200-39-00  
6
I56-1977-004R  
 
[10] Board Replacement  
[9.2.2.2] RTS451/RTS451KEY Remote Station Test  
[10.1] Sensor Board Replacement  
The RTS451/RTS451KEY Remote Test Station facilitates test of the alarm  
capability of the duct smoke detector. These accessories provide the  
stimulus to initiate an alarm condition at the detector. The detector is  
self-restoring when the accessory test stimulus is removed. Verify that the  
system control panel has reset; panel may need to be reset.  
1. Remove the two sensor board mounting screws.  
2. Pull gently on the board to remove it.  
3. To replace the board, align the board mounting features, holes, and the  
interconnect terminals. Push the board into place.  
4. Secure board with the two mounting screws.  
[9.2.3] Sensitivity Tests  
[10.2] Power Board Replacement  
Notify the proper authorities that the smoke detector system is undergo-  
ing maintenance, and that the system will temporarily be out of service.  
Disable the device or system undergoing maintenance to prevent unwant-  
ed alarms and possible dispatch of the fire department.  
1. Disconnect wiring from the terminal block.  
2. Remove the two power board mounting screws.  
3. Pull gently on the board to remove it.  
4. To replace the board, align the board mounting features, holes, and the  
interconnect terminals. Push the board into place.  
5. Secure board with the two mounting screws.  
6. Re-connect wiring to terminal block.  
[9.3] Maintenance of Duct Smoke Detectors [9.3.1] Air Filters  
1. Turn off power to the system.  
2. Remove and inspect sampling tube filters.  
3. If filters are heavily coated with dirt, replace them with new filters  
(p/n F36-09-11). If they are not heavily coated, use a vacuum cleaner  
or compressed air nozzle to remove dust, then reinstall the filters.  
[11] Model DH200RPL Air Duct Smoke Detector Specifications  
Operating Temperature Range 32° to 131°F (0° to 55°C)  
Storage Temperature Range  
Humidity Range  
Air Velocity  
-22º to 158ºF (-30º to 70ºC)  
[9.3.2] Photo Detector Boards  
10% to 93% (non-condensing)  
100 to 4000 ft/min (0.5 to 20.32 m/sec.)  
1438L x 512W x 234D (37 cm L x  
14 cm W x 7 cm D)  
1. Remove the screen by gently grasping on each side and pulling straight  
off  
Dimensions  
2. Lift the photo chamber in the same fashion. Vacuum the screen and  
cover. Use clean, compressed air to loosen and blow out any remaining  
debris. Replacement screens (p/n S08-39-01) are available.  
3. Vacuum photo chamber, then use clean compressed air to blow area  
clean.  
4. Replace the chamber by pressing it onto the base. Press the screen into  
place. It should fit tightly on the chamber.  
D200-39-00  
7
I56-1977-004R  
 
Current Requirements (using no accessories)  
Power supply voltage:  
Max. standby current:  
Max. alarm current:  
20-30 VDC  
26 mA  
24 VAC, 50-60 Hz  
65 mA RMS  
182 mA RMS  
3 to 10 Sec.  
2 Sec.  
120 VAC, 50-60Hz  
44 mA RMS  
52 mA RMS  
3 to 10 Sec.  
2 Sec.  
220/240 VAC, 50-60Hz  
25 mA RMS  
30 mA RMS  
3 to 10 Sec.  
87 mA  
Alarm response time:  
3 to 10 Sec.  
2 Sec.  
Power up time:  
2 Sec.  
Contact Ratings  
Accessory Current Loads at 24 VDC  
Alarm auxiliary contacts* (DPDT)  
10 A @ 30 VDC  
Device  
Standby  
0 mA  
Alarm  
10 A @ 277 VAC (.75 power factor)  
240 VA @ 249 VAC (0.4 power factor)  
1/8 HP @ 120 VAC  
PA400  
15 mA Max.  
12 mA Max.  
10 mA Max.  
RA400Z  
0 mA  
RTS451/RTS451KEY  
0 mA  
1/4 HP @ 240 VAC  
Supervisory contact (SPST)  
2.0 A @ 30 VDC (resistive)  
*Minimum switching current for auxiliary contact must be 100 mA DC minimum @ 5 VDC.  
Programming Specifications/Requirements for Intelligent System  
Control Panels  
There are a limited number of devices that can have their LEDs pro-  
grammed to illuminate. The actual number of devices is determined  
by the control panel and its ability to supply LED current.  
Refer to the Control Panel Installation Manual for details.  
Accessories  
Part No.  
Accessories  
Part No.  
RA400Z  
Replacement Photo Insect Screen  
S08-39-01  
P48-61-00  
P48-21-00  
A5053  
Remote LED  
Replacement End Cap for Plastic Sampling Tube  
Replacement End Cap for Metal Sampling Tubes  
Replacement Photoelectric Sensor Board  
Replacement Power Board (w/relay)  
Magnetic Remote Test  
Key-Activated Remote Test  
Replacement Filters  
Replacement Test Magnet  
RTS451  
RTS451KEY  
F36-09-11  
M02-04-00  
A5060  
Please refer to insert for the Limitations of Fire Alarm Systems  
Three-Year Limited Warranty  
System Sensor warrants its enclosed air duct smoke detector 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 this air duct smoke detector. No agent, representative, dealer, or employee of the  
Company has the authority to increase or alter the obligations or limitations of this  
Warranty. The Company’s obligation of this Warranty shall be limited to the repair or  
replacement of any part of the air duct smoke detector 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  
repair or replace units which are found to be defective because of damage, unrea-  
sonable 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.  
To keep your equipment in excellent working order, ongoing maintenance is required  
per the manufacturer’s recommendations and UL and NFPA standards. At a mini-  
mum, the requirements of Chapter 7 of NFPA 72, the National Fire Alarm Code, shall  
be followed. A preventative maintenance agreement should be arranged through  
the local manufacturer’s representative. Though smoke detectors are designed for  
long life, they may fail at any time. Any smoke detector, fire alarm equipment, or  
any component of that system which fails shall be repaired or replaced as soon as  
possible.  
FCC Statement  
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful inter-  
ference, and (2) this device must accept any interference received, including interference that may cause undesired operation.  
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These  
limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses  
and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio  
communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful  
interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct  
the interference by one or more of the following measures:  
– Reorient or relocate the receiving antenna.  
– Increase the separation between the equipment and receiver.  
– Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.  
– Consult the dealer or an experienced radio/TV technician for help.  
D200-39-00  
8
I56-1977-004R  
© 2004 System Sensor  
 

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