System Sensor Smoke Alarm DH100ACDCP User Manual

INSTALLATION AND MAINTENANCE INSTRUCTIONS  
A Division of Pittway  
3825 Ohio Avenue, St. Charles, Illinois 60174  
1-800-SENSOR2, FAX: 630-377-6495  
DH100ACDCP Air Duct Smoke Detector  
Before Installing  
or signaling of up to 9 other detectors in the loop for mul-  
Please thoroughly read the System Sensor Guide for Proper tiple fan shut down. These detectors are not designed for  
Use of Smoke Detectors in Duct Applications (A05-1004), 2-wire applications.  
which provides detailed information on detector spacing,  
For testing, the alarm can be enabled by a magnet activated  
placement, zoning, wiring, and special applications. Copies  
test switch or by the optional remote test station. The duct  
of this manual are available from System Sensor. NFPA  
smoke detector latches into alarm state when an alarm  
Standards 72 and 90A should also be referenced for detailed  
occurs. A green LED flashes to indicate power, a red LED  
information.  
signals local alarm indication, and optional accessories  
NOTICE: This manual shall be left with the owner/user of  
offer a variety of annunciation capabilities.  
this equipment.  
The DH100ACDCP can be reset by a momentary power  
interruption, the reset button on the front cover, the control  
panel, or remote reset accessory. The DH100ACDCP incor-  
porates a cover tamper feature that provides a trouble  
signal after 7 minutes if the cover is removed or improp-  
erly installed. Proper installation of the cover removes the  
trouble condition.  
IMPORTANT: This detector must be tested and maintained  
regularly following NFPA 72 requirements. The detector  
should be cleaned at least once a year.  
Table of Contents  
Page  
[1]General Description  
[2]Limitations of Duct Smoke Detectors  
1
1
[3]Exploded View of Duct Smoke Detector Components 2  
[2] Limitations Of Duct Smoke Detectors  
[4]Contents of the Duct Smoke Detector Kit  
[5]Installation Sequence  
2
2
WARNING  
[6]Duct Smoke Detector Maintenance and Test Procedures 5  
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 substi-  
tute for early warning in a building’s regular fire detection  
system.  
[7]Detector Cleaning Procedures  
[8]Board Replacement  
[9]Specifications  
7
8
8
8
Warranty  
[1] General Description  
System Sensor supports this position and strongly recom-  
mends that the user read NFPA Standards 90A, 72, and 101.  
The DH100ACDCP Air Duct Smoke Detectors are listed per  
UL 268A.  
An HVAC system supplies conditioned air to virtually every  
area of a building. Smoke introduced into this air duct sys-  
tem will be distributed to the entire building. Smoke detec-  
tors designed for use in air duct systems are used to sense  
the presence of smoke in the duct.  
WARNING  
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 protec-  
tion specialist.  
Model DH100ACDCP Air Duct Smoke Detector utilizes  
photoelectric technology for the detection of smoke. This  
detection method, when combined with an efficient hous-  
ing design, samples air passing through the duct and allows  
detection of a developing hazardous condition. When suf-  
ficient 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, 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.  
WARNING  
This device will not sense smoke unless the ventilation  
system is operating and the cover is installed.  
WARNING  
For this detector to function properly, it MUST be installed  
according to the instructions in this manual. Furthermore,  
the detector MUST be protected from the elements and  
operated within ALL electrical and environmental specifi-  
cations listed in this manual. Failure to comply with these  
requirements may prevent the detector from activating  
when smoke is present in the air duct.  
The DH100ACDCP detector is designed to operate on  
24 VDC/VAC, 120 VAC, or 240 VAC. Alarm and supervi-  
sory relay contacts are available for control panel interface  
(alarm initiation), HVAC control, and other auxiliary func-  
tions. Auxiliary relays are also provided for fan shut down  
D100-68-00  
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Figure 3. Installation of foam gaskets over sampling  
tube bushings:  
3. Secure the tube flange to the housing bushing with two  
#6 self-tapping screws.  
SCREW HOLES FOR  
ATTACHING HOUSING  
TO DUCT WORK.  
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 2of the tube extend out-  
side the duct. Plug this end with the end plug and tape  
closed any holes in the protruding section of the tube.  
Be sure to seal the duct where the tube protrudes.  
A78-2045-00  
[5.4] Sampling Tube Installation for Ducts Greater  
Than 112 Feet Wide  
Figure 4. Air duct detector inlet sampling tube:  
The sampling tube is identified by a series of air inlet holes  
on the tube. A plastic tube is included for ducts up to 18″  
in width. All other lengths must be purchased separately.  
Order the correct length, as specified in Table 1, for width  
of the duct where it will be installed. The exhaust tube is  
molded onto the base of the duct housing, and the A2440-00  
Exhaust Tube Extension is available as an accessory in  
those cases where the molded exhaust port does not extend  
at least 2 inches into the duct.  
AIR HOLES  
INLET  
TUBE  
END  
FLANGE  
PLUG  
ARROWS  
MUST FACE  
INTO AIR FLOW  
AIR FLOW DIRECTION  
A78-2047-00  
Figure 5. Tube mounting configurations with varying  
air flow direction:  
The inlet tube is always installed with the air inlet holes  
facing into the air flow. To assist proper installation, the  
tube’s mounting flange is marked with arrows. Make sure  
the inlet tube is mounted so that the arrows point into the  
air flow (see Figure 4). Figure 5 shows the various combi-  
nations of tube mounting configurations with respect to air  
flow. Mounting the detector housing in a vertical orienta-  
tion is acceptable, provided that the air flows directly into  
the sampling tube holes as indicated in Figure 4.  
DOTS INDICATE POSITION OF  
SAMPLING TUBE HOLES  
AIR FLOW  
AIR FLOW  
DIRECTION  
DIRECTION  
DETECTOR  
HOUSING  
DETECTOR  
HOUSING  
B.  
A.  
INLET  
TUBE  
EXHAUST  
TUBE  
EXHAUST  
TUBE  
INLET  
TUBE  
HORIZONTAL MOUNTING OF HOUSING  
EXHAUST  
TUBE  
DETECTOR  
HOUSING  
Table 1. Inlet tubes required for different duct  
widths:  
EXHAUST  
TUBE  
AIR FLOW  
AIR FLOW  
DIRECTION  
DIRECTION  
INLET  
INLET  
TUBE  
TUBE  
C.  
Outside Duct Width  
1 to 2 ft.  
Inlet Tube Required  
DETECTOR  
HOUSING  
D.  
ST-1.5  
ST-3  
2 to 4 ft.  
VERTICAL MOUNTING OF HOUSING  
NOTE: Only metal sampling tubes may be used on ori-  
entations C and D.  
4 to 8 ft.  
8 to 12 ft.  
ST-5  
ST-10  
[5.4.1] Installation For Ducts Greater Than 112 Feet  
But Less Than 8 Feet Wide  
WARNING  
In no case should more than 2 air inlet holes be cut off the  
tube. There must be a minimum of 10 holes in the tube  
exposed to the air stream.  
1. If the tube is longer than the width of the air duct, drill a  
34hole in the duct opposite the hole already cut for the  
inlet tube. Make sure the hole is 1″ to 2″ below the inlet  
hole on the opposite side of the duct to allow moisture  
drainage away from the detector. If the tube is shorter  
than the width of the air duct, install the end plug into  
the inlet tube as shown in Figure 4. Sampling tubes over  
3 ft. long must be supported at the end opposite the duct  
smoke detector.  
[5.4.2] Installation For Ducts More Than 8 Feet Wide  
NOTE: To install inlet tubes in ducts more than 8 feet  
wide, work must be performed inside the air duct.  
Sampling of air in ducts wider than 8 feet is accom-  
plished by using the ST-10 inlet sampling tube. If  
the tube is shorter than the width of the air duct,  
install the end plug into the inlet tube as shown  
in Figure 4 and support the end opposite the duct  
2. Slide the tube into the housing bushing that meets the  
air flow first. Position the tube so that the arrows point  
into the air flow.  
D100-68-00  
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Install the inlet tube as follows:  
[5.5] Install The Filters  
1. Drill a 34-inch hole in the duct directly opposite the hole To install the sampling tube filters, simply push the filters  
already drilled for the inlet tube. Make sure the hole is into the sampling and exhaust tube holes, as shown in  
1 to 2below the inlet hole on the opposite side of the Figure 6. If a metal sampling tube is used, install the filters  
duct to allow for moisture drainage.  
over the tube ends.  
2. Slide the inlet tube with the flange into the housing bush-  
ing that meets the air flow first. Position the tube so that Figure 6. Sampling tube filter installation:  
the arrows point into the air flow. Secure the tube flange  
to the housing bushing with two #6 self-tapping screws.  
3. From inside the duct, couple the other sections of the  
1
inlet tube to the section already installed using the 2-  
inch conduit fittings supplied. Make sure that the holes  
on both of the air inlet tubes are lined up and facing into  
the air flow.  
4. Trim the end of the tube protruding through the duct so  
that 1 to 2of the tube extend outside the duct. Plug this  
end with the end plug and tape closed any holes in the  
protruding section of the tube. Be sure to seal the duct  
A78-2106-01  
when the tube protrudes.  
CAUTION  
Filters require periodic cleaning or replacement, depend-  
ing 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 [6]  
for more information. Replacement filters can be ordered  
from System Sensor, 3825 Ohio Ave., St. Charles, IL 60174.  
(Exhaust tube/intake tube filter P/N F36-09-00)  
NOTE: An alternate method to using the ST-10 is to use  
two ST-5 inlet 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.  
[5.6] Field Wiring Installation Guidelines  
NOTE: Air currents inside the duct may cause excessive  
vibration, especially when the longer sampling  
tubes are used. In these cases a 3 inch floor flange  
(available at most plumbing supply stores) may  
be used to fasten the sampling tube to the other  
side of the duct. When using the flange/connector  
All wiring must be installed in compliance with the  
National Electrical Code and the local codes having juris-  
diction. Proper wire gauges should be used. The conduc-  
tors 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.  
1
mounting technique, drill a 1-inch to 14-inch hole  
where the flange will be used.  
For signal wiring, (the wiring between interconnected  
detectors or from detectors to auxiliary devices), it is usu-  
ally recommended that single conductor wire be no smaller  
than 18 gauge. The duct smoke detector terminals accom-  
modate wire sizes up to 12 gauge. The last foot of conduit  
should be flexible 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.  
Smoke detectors and alarm system control panels have  
specifications for allowable loop resistance. Consult the  
control panel manufacturer’s specifications for the total  
loop resistance allowed for the particular model control  
panel being used before wiring the detector loop.  
[5.4.3] Modifications of Inlet Sampling Tubes  
There may be applications where duct widths are not what  
is specified for the installation. In such cases, it is permis-  
sible to modify an inlet sampling tube that is longer than  
necessary to span the duct width.  
Use a 0.193-inch diameter (#11) 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 intended as a permanent substitute for  
ordering the correct length tubes.  
Wiring Instructions  
The DH100ACDCP detectors are designed for easy wiring.  
The housing provides a terminal strip with clamping plates.  
D100-68-00  
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Wiring connections are made by stripping about 3/8-inch of [6.1.3] Filter Replacement  
insulation from the end of the wire, sliding the bare end The filters do not substantially affect smoke performance  
under the plate, and tightening the clamping plate screw.  
even when up to 90% of the filter is clogged. Quarterly  
visual inspection usually suffices to determine whether the  
filters should be replaced because only a high percentage  
[5.7] Perform Detector Check  
1. Perform STANDBY AND TROUBLE TEST per Section of contamination affects performance. If further testing is  
[6.2.1]. required, compare differential pressure readings with and  
2. Perform MAGNET TEST per Section [6.2.2.1]. The without the filters installed. If the difference exceeds 10%  
RTS451 test of Section [6.2.2.2] may substitute for this replace the filters. In no case should the pressure differen-  
requirement.  
tial fall below 0.03 inches of water.  
3. Perform AIR FLOW TEST per Section [6.1.1].  
4. Perform SMOKE RESPONSE TEST per Section [6.1.2].  
5. Perform SENSITIVITY TEST per Section [6.2.3].  
[6.2] Standby, Alarm, And Sensitivity Tests  
[6.2.1] Standby And Trouble  
Standby — Look for the presence of the flashing green  
LED through the transparent housing cover.  
The LED should flash approximately every 10  
seconds.  
[5.8] Install The Cover  
Install the cover using the four screws that are captured in  
the housing cover. Be certain filters are installed as speci-  
fied in Section [5.5]. Make sure that the cover fits into the  
base groove and that all gaskets are in their proper posi- Trouble — If the detector LED does not flash, then the de-  
tions. Tighten the four screws.  
tector lacks power (check wiring, panel, or  
power supply), the detector board is missing  
(replace), the cover has been missing or not se-  
cured properly for more than 7 minutes (se  
cure cover properly), or the unit is defective  
(return for repair).  
[6] 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 personnel in verification of  
proper detector operation.  
Test —  
Cover  
The trouble condition can be caused intention  
ally to verify correct operation of the system.  
Remove the detector board to cause a trouble  
condition locally and at the system control  
panel.  
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.  
Tamper — If the cover is removed or not properly secured  
for a period longer than 7 minutes, a trouble  
[6.1] Smoke Entry Tests  
[6.1.1] Air Flow  
signal is generated to indicate the cover is missing.  
To verify sufficient sampling of ducted air, use a manometer  
to measure the differential pressure created from air flow [6.2.2] Alarm Tests  
across the sampling tubes. The pressure should measure no [6.2.2.1] M02-04-00 Magnet Test  
less than 0.03 inches of water and no greater than 1.4 inch- 1. Place the painted surface of the magnet onto the TEST  
es of water. The air handler must be operating for this test.  
locator on the bottom of the housing (Figure 13).  
2. The red alarm LED on the detector should latch on, as  
should any accessories (i.e. RA400Z, RTS451). Verify  
system control panel alarm status and control panel  
execution of all intended auxiliary functions (i.e. fan  
shutdown, damper control, etc.).  
[6.1.2] Smoke Response  
To determine if smoke is capable of entering the sens-  
ing chamber, visually identify any obstructions. Plug the  
exhaust and inlet tube holes to prevent ducted air from  
carrying smoke away from the detector head, then blow 3. The detector must be reset by system control panel, front  
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.  
cover reset button, or remote accessory.  
D100-68-00  
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Figure 7. System wiring diagram for 4-wire duct smoke detectors:  
CAUTION  
Do not loop wire under terminals when wiring detectors. Break wire runs to provide system supervision of connections.  
AVAILABLE POWER INPUTS  
10  
AVAILABLE POWER INPUTS  
10  
CONNECT POWER SOURCE  
TO APPROPRIATE TERMINALS  
OF EACH DETECTOR. SEE  
SPECIFICATIONS FOR  
ADDITIONAL POWER SUPPLY  
INFORMATION.  
POWER INPUTS ACCEPT  
24 VDC, 24 VAC 50-60 HZ,  
120 VAC 50-60 HZ, OR  
9
A
B
C
9
A
B
C
220/240 VAC 50-60 HZ.  
CONNECT POWER SOURCE  
TO APPROPRIATE TERMINALS  
OF EACH DETECTOR.  
120  
120  
24V  
24V  
VAC  
VAC  
220/240  
VAC  
220/240  
VAC  
ALARM AUXILIARY CONTACTS  
FOR FAN SHUTDOWN, ETC.  
ALARM AUXILIARY CONTACTS  
FOR FAN SHUTDOWN, ETC.  
16  
6
17  
7
18  
8
16  
6
17  
7
18  
8
AUX. CONTACT RATINGS  
10A @ 30 VDC RESISTIVE  
10A @ 250 VAC  
FOR WIRING OF AUXILIARY  
DEVICES, REFER TO  
100mA MINIMUM @ 5 VDC  
NOT INTENDED FOR  
CONNECTION TO CONTROL  
PANELS.  
N.C.  
C.  
N.O.  
N.O.  
C.  
N.C.  
N.C.  
C.  
N.O.  
N.O.  
C.  
N.C.  
MANUFACTURER'S  
INSTALLATION INSTRUCTIONS  
OR CONTACT MANUFACTURER.  
ALARM AUXILIARY CONTACTS SHOWN IN  
STANDBY. CONTACTS TRANSFER DURING  
ALARM AS INDICATED BY THE ARROWS.  
ALARM AUXILIARY CONTACTS SHOWN IN  
STANDBY. CONTACTS TRANSFER DURING  
ALARM AS INDICATED BY THE ARROWS.  
NOTE: THE SUPERVISORY RELAY NOW  
PROVIDES A "FORM C" CONTACT FOR  
CUSTOMIZED APPLICATIONS.  
FOR STANDARD APPLICATIONS, ONLY  
THE "NO" CONTACT IS USED  
SUPERVISORY TROUBLE CONTACTS  
SUPERVISORY TROUBLE CONTACTS  
TROUBLE CONTACT RATING  
2.0 A @ 30 VDC resistive  
2.0 A @ 125 VAC resistive  
14  
3
14  
3
TROUBLE CONTACTS CLOSED IN ALARM AND STANDBY.  
CONTACTS OPEN WHILE DETECTOR PCB OR POWER IS  
REMOVED OR WHEN TAMPER FEATURE TIMES OUT. OPEN  
CONTACTS SIGNAL TROUBLE CONDITION TO PANEL.  
TROUBLE CONTACTS CLOSED IN ALARM AND STANDBY.  
CONTACTS OPEN WHILE DETECTOR PCB OR POWER IS  
REMOVED OR WHEN TAMPER FEATURE TIMES OUT. OPEN  
CONTACTS SIGNAL TROUBLE CONDITION TO PANEL.  
+
5
5
ALARM  
INITIATION  
CONTACTS  
CONTACTS SHOWN  
OPEN IN STANDBY.  
CONTACTS CLOSE  
IN ALARM.  
ALARM  
INITIATION  
CONTACTS  
CONTACTS SHOWN  
OPEN IN STANDBY.  
CONTACTS CLOSE  
IN ALARM.  
ALARM  
INITIATION  
LOOP  
4
4
EOL RESISTOR  
UL LISTED 4-WIRE  
CONTROL PANEL  
FIRST DETECTOR IN THE LOOP  
DH100ACDCP  
LAST DETECTOR IN THE LOOP  
DH100ACDCP  
SPECIFIED BY  
PANEL MANUFACTURER  
A78-2352-27  
Figure 8. Wiring diagram for DH100ACDCP to APA451: Figure 9. Wiring diagram for DH100ACDCP to  
RTS451KEY and interconnect feature:  
4-Wire Wiring to APA451  
DH100ACDCP  
Alarm Signal  
RTS451/RTS451KEY  
(Red LED) Alarm  
1
15  
19  
14  
3
��  
 
 
 
*
�  
 
 
 
Aux. Power +  
Sup. N. O.  
For RTS451KEY  
only without a  
control panel.  
*
 
�  
(Green LED)  
Power  
6
Sup. COM  
 
�  
���  
Aux. Power –  
Reset  
20  
2
2
3
4
5
���  
 
 
Test  
11  
Figure 10. Multiple fan shutdown (interconnect):  
1
Important Interconnect Notes  
1
6
A
B
C
1
A
6
B
C
1
6
A
B
C
• When using the interconnect feature, all in-  
terconnected units must be powered with  
the same, independent supply.  
12  
16  
12  
16  
12  
16  
NEXT  
DETECTOR  
DETECTOR 1  
+
DETECTOR 2  
DETECTOR 3  
• Polarity must be maintained throughout the  
interconnect wiring. Connect terminal 12 on  
unit 1 to terminal 12 on unit 2 and so on.  
Similarly, connect terminal 1 on unit 1 to ter-  
minal 1 on unit 2 and so on.  
12  
SYSTEM  
CONTROL  
POWER OR  
THERMOSTAT  
SYSTEM  
CONTROL  
POWER OR  
THERMOSTAT  
SYSTEM  
CONTROL  
POWER OR  
THERMOSTAT  
FAN  
CONTROL  
FAN  
CONTROL  
FAN  
CONTROL  
D100-68-00  
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Figure 11. Wiring diagrams for optional accessories:  
Figure 12. Wiring diagram for  
DH100ACDCP to SSK451:  
(+)  
(+)  
15  
15  
FIELD INSTALLED  
JUMPER FOR  
TEMPORAL PATTERN  
ALARM SIGNAL (+)  
AUX POWER (—)  
ALARM SIGNAL (+)  
AUX POWER (—)  
RED  
COMMON  
TEMPORAL SELECT  
ALARM SIGNAL  
3
2
1
4
20  
(—)  
20  
(—)  
15  
3
ALARM SIGNAL  
SUPERVISORY  
SUPERVISORY SIGNAL  
DUCT DETECTOR  
DH100ACDC  
PA400 (OPTIONAL)  
AUDIBLE ALERT  
DUCT DETECTOR  
DH100ACDC  
RA400Z (OPTIONAL)  
REMOTE (LED)  
ANNUNCIATOR  
NO  
CONTACT  
14  
2
RESET  
TEST  
7
8
6
5
RESET  
A78-2354-07  
11  
20  
19  
TEST  
ACCESSORY CURRENT LOADS AT 24 VDC  
POWER (-)  
POWER (+)  
AUX. POWER (-)  
AUX. POWER (+)  
ALARM  
DEVICE  
STANDBY  
12.5mA Max.  
0mA  
TROUBLE  
n/a  
30mA Max.  
15mA Max.  
10mA Max.  
APA451  
PA400  
n/a  
SSK451  
DH100ACDC  
RA400Z  
0mA  
n/a  
7.5mA Max.  
30mA Max.  
RTS451/RTS451KEY  
SSK451  
12mA*  
n/a  
FIELD INSTALLED  
JUMPER  
5mA Max.  
9mA Max.  
*NOTE: When a unit is powered at the 120VAC or 220/240VAC input, any  
combination of accessories may be used such that the given accessory loads are:  
60 mA or less in the standby state; 110 mA or less in the alarm state.  
[6.2.3] Sensitivity Tests  
[6.2.3.1] MOD400 or MOD400R Test  
Figure 13. Testing detector alarm:  
After verification of alarm capability, use the MOD400R test  
module with a voltmeter to check detector sensitivity as  
indicated in the test module’s manual. The housing cover  
must be removed to perform this test.  
If test module readings indicate that the detector head is  
outside of the acceptable range that is printed on the label  
of the detector, the detector chamber requires cleaning per  
Section [7] of this manual.  
[7] Detector Cleaning Procedures  
A78-2325-00  
Notify the proper authorities that the smoke detector sys-  
tem 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.  
[6.2.2.2] RTS451/RTS451KEY Remote Test Station  
The RTS451/RTS451KEY Remote Test Station facilitates  
test of the alarm capability of the duct smoke detec-  
tor as indicated in the RTS451/RTS451KEY manual. The  
DH100ACDCP duct smoke detector can be reset by the  
RTS451/RTS451KEY. If a system control panel is used, the  
panel itself may also require testing.  
To install the RTS451/RTS451KEY, connect the device as  
shown in Figure 9; wire runs must be limited to 25 ohms  
or less per interconnecting wire.  
Please note that the magnetic coil supplied with the  
RTS451 and RTS451KEY is not required when these  
accessories are used with the DH100ACDCP detectors.  
The functionality of the magnetic coil has been designed  
into the circuitry of the new Innovair™ duct smoke detec-  
tors.  
[7.1] 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. If they are not heavily coated, use a vacuum  
cleaner or compressed air nozzle to remove dust, then  
reinstall the filters.  
[7.2] Photo Detector Boards  
1. Remove the screen by gently grasping on each side and  
pulling straight off.  
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 (S08-39-01) are available.  
3. Vacuum photo chamber, then use clean compressed air  
to blow area clean.  
[6.2.2.3] SSK451 Multi-Signaling Accessory  
The System Sensor SSK451 Multi-Signaling accessory  
combines a sounder feature with a key activated test and  
reset function. green, amber and red LEDs provide a visual  
indication of power, trouble, and alarm respectively. An  
optional strobe (PS24LO) with a smoke lens can be added  
to conform to the codes of certain jurisdictions.  
4. Replace the chamber by pressing it onto the base.  
Press the screen into place. It should fit tightly on the  
chamber.  
To install the SSK451, connect the device as shown in figure 12.  
D100-68-00  
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I56-1147-12R  
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[7.3] Ion Detector Boards  
1. Brush or vacuum inside area of cover. Chamber may 4. Secure board with the two mounting screws.  
then be blown out using clean, compressed air. [8.2] Power Board replacement (Part No. A5064)  
2. Vacuum sensing chamber before using clean, compressed 1. Disconnect wiring from the terminal block.  
board into place.  
air to loosen and blow out any remaining debris.  
[8.0] Board Replacement  
[8.1] Detector Board Replacement (Part No. A5190)  
1. Remove the two detector board mounting screws.  
2. Pull gently on the board to remove it.  
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 fea-  
tures, holes, and the interconnect terminals. Push the  
board into place.  
3. To replace the board, align the board mounting fea- 5. Secure board with the two mounting screws.  
tures, holes, and the interconnect terminals. Push the 6. Re-connect wiring to terminal block.  
[9] Model DH100ACDCP Air Duct Smoke Detector Specifications  
Temperature:  
DH100ACDCP  
Storage Temperature:  
Humidity:  
Air Velocity:  
Dimensions:  
32° to 131° F  
–22° to 150° F  
10% to 93% R.H. noncondensing  
500 to 4000 ft./min.  
14.38L x 5.5W x 2.75D  
3.75 pounds  
0° to 55° C  
–30° to 70° C  
2.5 to 20.3 m/sec.  
37cm L x 14cm W x 7cm D  
1.7 kg  
Weight:  
Electrical Specifications  
Power supply voltage:  
Input capacitance:  
Reset voltage:  
Reset time (with RTS451):  
Reset time (by power down):  
Power up time:  
20-29 VDC  
270 µF max.  
3.0 VDC min.  
.03 to 0.3 sec.  
0.6 sec. max.  
34 sec. max.  
2 to 17 sec.  
24 VAC 50-60-Hz  
270 µF max.  
2.0 VAC min.  
.03 to 0.3 sec.  
0.6 sec. max.  
34 sec. max.  
2 to 17 sec.  
120 VAC 50-60 Hz 220/240 VAC 50-60 Hz  
N/A  
N/A  
10 VAC min.  
.03 to 0.3 sec.  
0.6 sec. max.  
34 sec. max.  
2 to 17 sec.  
20 VAC min.  
.03 to 0.3 sec.  
0.6 sec. max.  
34 sec. max.  
2 to 17 sec.  
Alarm response time:  
Sensitivity Test:  
See detector label See detector label  
See detector label  
See detector label  
Power Supply Voltage  
20 - 29 VDC  
24 VAC 50 - 60 Hz  
120 VAC 50 - 60 Hz  
220/240 VAC 50 - 60 Hz  
CURRENT REQUIREMENTS (USING NO ACCESSORIES)  
Max. standby current  
Max. alarm current  
15 mA  
70 mA  
35 mA RMS  
25 mA RMS*  
35 mA RMS*  
15 mA RMS*  
25 mA RMS*  
125 mA RMS  
CONTACT RATINGS  
ACCESSORY CURRENT LOADS AT 24 VDC  
Alarm initiation contacts (SPST)  
Alarm auxiliary contacts (DPDT)  
2.0A @ 30 VDC (resistive)  
ALARM  
DEVICE  
APA451  
PA400  
STANDBY  
12.5mA Max.  
0mA  
TROUBLE  
n/a  
30mA Max.  
15mA Max.  
10mA Max.  
7.5mA Max.  
7.5mA Max.  
30mA Max.  
10A @ 30 VDC  
10A @ 250 VAC  
n/a  
RA400Z  
RTS451  
RTS451KEY  
SSK451  
0mA  
n/a  
Note: Alarm auxiliary contacts must switch 100 mA minimum at 5VDC. Alarm auxiliary contacts shall not be  
connected to inititaing circuits of control panels. Use the alarm initiation contact for this purpose.  
0mA  
n/a  
12mA*  
n/a  
5mA Max.  
9mA Max.  
Trouble contacts (SPDT)  
2.0A @ 30 VDC (resistive)  
2.0A @ 125 VAC (resistive)  
* NOTE: When a unit is powered at the 120VAC or 220/240VAC input, any  
combination of accessories may be used such that the given accessory loads are:  
60 mA or less in the standby state,  
110 mA or less in the alarm state.  
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 ser-  
vice 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 author-  
ity 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 mal-  
function and suspected cause of failure. The Company shall not be obli-  
gated to repair or 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.  
D100-68-00  
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I56-1147-12R  
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