System Sensor INNOVAIR DH100ACDCLWP User Manual

INSTALLATION AND MAINTENANCE INSTRUCTIONS  
3825 Ohio Avenue, St. Charles, Illinois 60174  
800/736-7672, FAX: 630-377-6495  
DH100ACDCLWP Watertight Air Duct Smoke  
Detector with Extended Air Speed Range  
The Innovair DH100ACDCLWP is a photoelectric extended air Model DH100ACDCLWP Air Duct Smoke Detector is sup-  
speed range duct smoke detector with a NEMA 4 Rated plied as a photoelectronic model. This smoke detection  
watertight housing. This detector is specially designed for method is combined with an efficient housing design that  
use in either indoor or outdoor applications to provide a samples air passing through a duct and allows detection of  
degree of protection against falling dirt, rain, sleet, wind- a developing hazardous condition. When sufficient smoke  
blown dust, splashing water and hose-directed water.  
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.  
The DH100ACDCLWP is listed for an extended air speed  
range of 100 to 4000 feet per minute (0.5 m/s to 20.2 m/s).  
IMPORTANT NOTES  
The following temperature limitations must be observed  
during the installation and handling of this product:  
Operating temperature: +32° to +131°F (0° to + 55°C)  
The DH100ACDCLWP detector is designed to operate on 24  
VDC/VAC, 120 VAC, or 240 VAC. Alarm and supervisory  
relay contacts are available for control panel interface (alarm  
initiation), HVAC control, and other auxiliary functions.  
Auxiliary relays are also provided for fan shut down or sig-  
naling of up to 9 other detectors in the loop for multiple fan  
shut down. These detectors are not designed for 2-wire  
applications.  
Storage temperature:  
–22° to +158°F (–30° to +70°C)  
To maintain the watertight properties of this duct smoke  
detector, watertight conduit and fittings must be used.  
Mount the product with the conduit holes facing down-  
wards, if possible.  
For testing, the alarm can be enabled by a magnet activated  
test switch or by the optional remote test station. The duct  
smoke detector latches into alarm state when an alarm  
occurs. Prior to cover installation, the green LED should be  
flashing, indicating that the detector is powered and func-  
tioning. To accurately determine detector status following  
installation, System Sensor offers a variety of remote  
annunciation and test accessories.  
Before Installing  
Please thoroughly read the System Sensor 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  
Sensor’s toll free fax-back service, Documents on Demand at  
800/736-7672. NFPA Standards 72 and 90A should also be ref-  
erenced for detailed information.  
The DH100ACDCLWP can be reset by a momentary power  
interruption, the reset button on the front cover, the control  
panel, or remote reset accessory. The DH100ACDCLWP  
incorporates a cover tamper feature that provides a trou-  
ble signal after 7 minutes if the cover is removed or  
improperly installed. Proper reinstallation of the cover  
removes the trouble condition.  
NOTICE: This manual shall be left with the owner/user of  
this equipment.  
IMPORTANT: This detector must be tested regularly follow-  
ing NFPA 90 requirements. The detector should be cleaned at  
least once a year.  
Table of Contents  
Page  
[2] Limitations Of Duct Smoke Detectors  
[1] General Description  
1
WARNING  
[2] Limitations of Duct Smoke Detectors  
1
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 pro-  
viding 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  
DH100ACDCLWP Air Duct Smoke Detectors are listed per  
UL 268A.  
[3] Exploded View of Duct Smoke Detector Components  
[4] Contents of the Duct Smoke Detector Kit  
[5] Installation Sequence  
[6] Duct Smoke Detector Maintenance and Test Procedures  
[7] Detector Cleaning Procedures  
[8] Board Replacement  
2
2
2
5
7
8
8
8
[9] Specifications  
Warranty  
[1] General Description  
WARNING  
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.  
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.  
D200-24-00  
1
I56-0056-07R  
Figure 3. Air duct detector sampling tube:  
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  
SAMPLING  
TUBE  
FLANGE  
END CAP  
The sampling 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 an arrow. Make  
sure the sampling tube is mounted so that the arrow points  
into the air flow (see Figure 3). Figure 4 shows the various  
combinations of tube mounting configurations with respect  
to air flow. Mounting the detector housing in a vertical ori-  
entation is acceptable, provided that the air flows directly  
into the sampling tube holes as indicated in Figure 3.  
ARROW  
AIR FLOW DIRECTION  
MUST FACE  
INTO AIR FLOW  
H0108-02  
Figure 5. Tube mounting configurations with varying  
air flow direction:  
DOTS INDICATE POSITION OF  
SAMPLING TUBE HOLES  
AIR FLOW  
AIR FLOW  
DIRECTION  
DIRECTION  
DETECTOR  
HOUSING  
DETECTOR  
HOUSING  
Table 1. Sampling tubes recommended for different  
duct widths:  
B.  
A.  
SAMPLING  
TUBE  
EXHAUST  
TUBE  
EXHAUST  
TUBE  
SAMPLING  
TUBE  
Outside Duct Width  
1 to 2 ft.  
Sampling Tube Recommended*  
HORIZONTAL MOUNTING OF HOUSING  
ST-1.5  
ST-3  
DETECTOR  
HOUSING  
2 to 4 ft.  
EXHAUST  
TUBE  
4 to 8 ft.  
8 to 12 ft.  
ST-5  
ST-10  
AIR FLOW  
AIR FLOW  
DIRECTION  
DIRECTION  
SAMPLING  
TUBE  
2
3
DETECTOR  
HOUSING  
*Must extend a minimum of / the duct width.  
D.  
C.  
VERTICAL MOUNTING OF HOUSING  
1
2
[5.5.1] Installation For Ducts Greater Than 1 / Feet  
H0109-01  
But Less Than 8 Feet Wide  
NOTE: Only metal sampling tubes may be used on ori-  
entations C and D.  
1. If the tube is longer than the width of the air duct, drill a  
3
4
/ hole in the duct opposite the hole already cut for the  
sampling tube. Make sure the hole is 1to 2below the  
inlet hole on the opposite side of the duct to allow mois-  
ture drainage away from the detector. If the tube is short-  
er than the width of the air duct, install the end cap into  
the sampling tube as shown in Figure 4. Sampling tubes  
over 3 ft. long must be supported at the end opposite the  
duct smoke detector.  
[5.5.2] Installation For Ducts More Than 8 Feet Wide  
NOTE: To install sampling 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 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 detector.  
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.  
3. Secure the tube flange to the housing bushing with two  
#6 self-tapping screws.  
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 cap and tape  
closed any holes in the protruding section of the tube. Be  
sure to seal the duct where the tube protrudes.  
Install the inlet tube as follows:  
3
4
1. Drill a / -inch hole in the duct directly opposite the hole  
already drilled for the inlet tube. Make sure the hole is 1  
to 2below the inlet hole on the opposite side of the  
duct to allow for moisture drainage.  
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.  
3. From inside the duct, couple the other sections of the  
sampling tube to the section already installed using the  
1
2
/ -inch conduit fittings supplied. Make sure that the  
holes on both of the air inlet tubes are lined up and fac-  
ing into the air flow.  
NOTE: The sampling tube end cap is critical to the 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.  
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 cap and tape closed any holes in the  
protruding section of the tube. Be sure to seal the duct  
when the tube protrudes.  
D200-24-00  
3
I56-0056-07R  
[5.7] Field Wiring  
Installation Guidelines  
NOTE: An alternate method to using the ST-10 is to use  
two ST-5 sampling 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.  
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.  
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 small-  
er than 18 gauge. The duct smoke detector terminals  
accommodate wire sizes up to 12 gauge. In order to achieve  
NEMA 4 environmental protection, watertight conduit and  
fittings must be used when installing the DH100ACDCLWP.  
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  
1
4
mounting technique, drill a 1-inch to 1 / -inch hole  
where the flange will be used.  
[5.5.3] Modifications of Sampling Tubes  
There may be applications where duct widths are not what  
is specified for the installation. In such cases, it is permis-  
sible to modify a sampling tube that is longer than neces-  
sary to span the duct width.  
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.  
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.  
Wiring Instructions  
The DH100ACDCLWP detectors are designed for easy  
wiring. The housing provides a terminal strip with clamp-  
ing plates. Wiring connections are made by stripping about  
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.  
3
8
/ -inch of insulation from the end of the wire, sliding the  
bare end under the plate, and tightening the clamping plate  
screw.  
[5.6] Install The Filters  
[5.8] Perform Detector Check  
1. Perform STANDBY AND TROUBLE TEST per Section  
[6.2.1].  
To install the sampling tube filters, simply push the filters  
into the sampling and exhaust tube holes, as shown in  
Figure 5.  
2. Perform MAGNET TEST per Section [6.2.2.1]. The  
RTS451 test of Section [6.2.2.2] may substitute for this  
requirement.  
Figure 5. Sampling tube filter installation:  
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].  
[5.9] Install The Cover  
Install the cover using the six screws that are captured in  
the housing cover. Be certain filters are installed as speci-  
fied in Section [5.6]. Make sure that the cover fits into the  
base groove and that all gaskets are in their proper posi-  
tions. Tighten the six screws.  
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 [6]  
for more information. For replacement filters, contact your  
Innovair distributor. (Exhaust tube/intake tube filter P/N  
F36-09-11)  
[6] Duct Smoke Detector Maintenance And Test  
Procedures  
As recommended in NFPA 90, all smoke detection devices  
designated for automatic shutdown shall be tested annually.  
The tests in this manual are designed to assist installation  
and maintenance personnel in verification of proper detector  
operation.  
D200-24-00  
4
I56-0056-07R  
Before conducting these tests, notify the proper authorities measure and record the voltage drop across the 1000 Ω  
that the smoke detection system will be temporarily out of resistor (measurement 1), 4.00 volts is typical. Using flexi-  
service. Disable the zone or system under test to prevent ble tubing and rubber stoppers, connect the HIGH side of  
unwanted alarms.  
the transmitter to the sampling tube of the duct smoke  
detector 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 1000 resistor  
(measurement 2). Subtract the voltage recorded in meas-  
urement 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.  
Once readings are complete, reinsert both filters and rein-  
stall cover. Reconnect power.  
[6.1] Smoke Entry Tests  
[6.1.1] Air Flow  
The DH100ACDCLWP is designed to operate over an  
extended air speed range of 100 to 4000 FPM. To verify suf-  
ficient 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 0.0015 inches of water and no  
more than 1.4 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 6.1.4 or; 2) the use of aerosol smoke  
per Section 6.1.2.  
Figure 6. Procedure for verifying air flow:  
TO SAMPLING TUBE  
TO EXHAUST TUBE  
HIGH  
LOW  
DIFFERENTIAL  
PRESSURE  
TRANSMITTER  
MODEL #607-01  
15 TO 36VDC  
SUPPLY  
[6.1.2] Air Flow Test using Aerosol Smoke  
9 VOLT  
BATTERY  
This test is intended for low-flow systems (100-500FPM). If  
the air speed is greater than 500FPM, use a conventional  
manometer to measure differential pressure between the  
sampling tubes as described in 6.1.1. Drill a 14hole 3 feet  
upstream from the duct smoke detector. With the air han-  
dler 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 min-  
utes 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  
9 VOLT  
BATTERY  
1000 OHM 5% 1 WATT RESISTOR  
9 VOLT  
BATTERY  
VOLT METER  
FLUKE MODEL 87  
OR EQUIVALENT  
[6.1.5] Filter Replacement  
The filters do not substantially affect smoke performance  
even when up to 90% of the filter is clogged. Quarterly  
visual inspection usually suffices 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 differen-  
tial fall below 0.0015 inches of water.  
detector. Use duct tape to seal the aerosol smoke entry hole.  
*Aerosol smoke can be purchased from several maufacturers, including  
Home Safeguard Industries, Malibu, CA. Phone: 310/457-5813.  
[6.1.3] Smoke Entry Test  
To determine if smoke is capable of entering the sensing  
chamber, visually identify any obstructions. With the cover  
removed, plug the exhaust and inlet tube holes to prevent [6.2] Standby, Alarm and Sensitivity Tests  
ducted air from carrying smoke away from the detector The cover must be removed to perform these tests. The use  
head, then blow smoke such as cigarette, cotton wick, or of a remote accessory for visible indication of power and  
punk directly at the head to cause an alarm. REMEMBER alarm is recommended.  
TO REMOVE THE PLUGS AFTER THIS TEST, OR THE  
DETECTOR WILL NOT FUNCTION PROPERLY.  
[6.2.1] Standby And Trouble  
Standby—Look for the presence of the flashing green LED. The  
[6.1.4] Air Flow Test using Dwyer Series 607  
Differential Pressure Transmitter  
LED should flash approximately every 10 seconds.  
Trouble— If the detector LED does not flash, then the detector  
lacks power (check wiring, panel, or power supply),  
the detector board is missing (replace), the cover  
has been missing or not secured properly for more  
than 7 minutes (secure cover properly), or the unit  
is defective (return for repair).  
To verify the air speed of the duct using an anemometer, air  
velocity must be at least 100 FPM. Disconnect power and  
remove cover. Remove both foam air filters from the inlet  
and exhaust tubes. Wire the Dwyer transmitter as shown in  
Figure 6. Connect the leads of the meter to either side of the  
1000 resistor. Allow unit to warm up for 15 seconds. With  
both HIGH and LOW pressure ports open to ambient air,  
Test—  
The trouble condition can be caused intentionally to  
verify correct operation of the system. Remove the  
D200-24-00  
5
I56-0056-07R  
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  
MANUFACTURER'S  
100mA MINIMUM @ 5 VDC  
1/4 HP @ 240 VAC  
N.C.  
C.  
N.O.  
N.O.  
C.  
N.C.  
N.C.  
C.  
N.O.  
N.O.  
C.  
N.C.  
1/8 HP @ 120 VAC  
INSTALLATION INSTRUCTIONS  
OR CONTACT MANUFACTURER.  
NOT INTENDED FOR  
CONNECTION TO CONTROL  
PANELS.  
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 VDC 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  
DH100ACDCLWP  
LAST DETECTOR IN THE LOOP  
DH100ACDCLWP  
SPECIFIED BY  
PANEL MANUFACTURER  
H0178-00  
Figure 8. Wiring diagram for DH100ACDCLWP  
to APA451:  
Figure 9. Wiring diagram for DH100ACDCLWP to  
RTS451KEY and interconnect feature:  
DH100ACDCLWP  
Alarm Signal  
RTS451/RTS451KEY  
DH100ACDCLWP  
APA451  
(Red LED) Alarm  
1
15  
19  
14  
3
Alarm  
(Red LED)  
2
Alarm Signal  
Aux. Power +  
Sup. N. O.  
15  
*
Aux. Power +  
Sup. N. O.  
19  
14  
3
For RTS451KEY  
only without a  
control panel.  
*
(Green LED)  
Power  
6
Sup. COM  
Sup. COM  
Power  
(Green LED)  
3
1
Common  
Aux. Power –  
20  
Aux. Power — 20  
2
3
4
5
Reset  
2
NOTE: Wiring diagram shown is for DH100ACDCLWP 4-wire duct  
smoke detector system equipped without a control panel.  
Test  
11  
Figure 10. Multiple fan shutdown (interconnect):  
Important Interconnect Notes  
• When using the interconnect feature, all  
interconnected units must be powered with  
the same, independent supply.  
1
6
A
B
C
1
A
6
B
C
1
6
A
B
C
OUT TO  
10 DETECTORS  
MAXIMUM  
12  
16  
12  
16  
12  
16  
• 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.  
DETECTOR 1  
DETECTOR 2  
DETECTOR 10  
SYSTEM  
CONTROL  
POWER OR  
THERMOSTAT  
SYSTEM  
CONTROL  
POWER OR  
THERMOSTAT  
SYSTEM  
CONTROL  
POWER OR  
THERMOSTAT  
FAN  
CONTROL  
FAN  
CONTROL  
FAN  
CONTROL  
H0155-01  
• Up to 10 units may be interconnected.  
D200-24-00  
6
I56-0056-07R  
Figure 11. Wiring diagrams for optional accessories:  
Figure 12. Wiring diagram for  
DH100ACDCLWP 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  
DUCT DETECTOR  
DH100ACDCLWP  
PA400 (OPTIONAL)  
AUDIBLE ALERT  
DUCT DETECTOR  
DH100ACDCLWP  
RA400Z (OPTIONAL)  
REMOTE (LED)  
ANNUNCIATOR  
SUPERVISORY SIGNAL  
SUPERVISORY  
CONTACT  
NO  
14  
2
RESET  
TEST  
7
8
6
5
RESET  
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  
A78-2354-08  
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.  
detector board to cause a trouble condition locally  
and at the system control panel.  
sories are used with the DH100ACDCLWP detectors. The  
functionality of the magnetic coil has been designed into the  
circuitry of the new Innovair™ duct smoke detectors.  
Cover  
Tamper — If the cover is removed or not properly secured for  
a period longer than 7 minutes, a trouble signal is  
generated to indicate the cover is missing.  
[6.2.2.3] SSK451 Multi-Signaling Accessory  
The System Sensor SSK451 Multi-Signaling accessory com-  
bines a sounder feature with a key activated test and reset  
function. Green, amber and red LEDs provide a visual indica-  
tion 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.  
Figure 13. Testing detector alarm:  
To install the SSK451, connect the device as shown in figure 12.  
[6.2.3] Sensitivity Tests  
[6.2.3.1] MOD400 or MOD400R Test  
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.  
H0160-00  
[6.2.2] Alarm Tests  
[6.2.2.1] M02-04-00 Magnet 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.  
1. Place the painted surface of the magnet onto the 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 exe-  
cution of all intended auxiliary functions (i.e. fan shut-  
down, damper control, etc.).  
[7] Detector Cleaning Procedures  
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.  
3. The detector must be reset by system control panel, front  
cover reset button, or remote accessory.  
[7.1] Air Filters  
1. Turn off power to the system.  
[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 detector as indi-  
cated in the RTS451/RTS451KEY manual. The DH100ACD-  
CLWP duct smoke detector can be reset by the  
RTS451/RTS451KEY. If a system control panel is used, the  
panel itself may also require testing.  
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.  
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.  
[7.2] Photo Detector Board  
1. Remove the screen by gently grasping on each side and  
pulling straight off.  
Please note that the magnetic coil supplied with the  
RTS451 and RTS451KEY is not required when these acces-  
D200-24-00  
2. Lift the photo chamber in the same fashion. Vacuum the  
screen and cover. Use clean, compressed air to loosen  
I56-0056-07R  
7
and blow out any remaining debris. Replacement  
screens (S08-39-01) are available.  
tures, holes, and the interconnect terminals. Push the  
board into place.  
3. Vacuum photo chamber, then use clean compressed air 4. Secure board with the two mounting screws.  
to blow area clean.  
[8.2] Power Board replacement (part no. A5064)  
4. Replace the chamber by pressing it onto the base.  
1. Disconnect wiring from the terminal block.  
Press the screen into place. It should fit tightly on the  
2. Remove the two power board mounting screws.  
chamber.  
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.  
5. Secure board with the two mounting screws.  
6. Re-connect wiring to terminal block.  
[8.0] Board Replacement  
[8.1] Detector Board Replacement (part no. A5069)  
1. Remove the two detector board mounting screws.  
2. Pull gently on the board to remove it.  
3. To replace the board, align the board mounting fea-  
[9] Model DH100ACDCLWP Air Duct Smoke Detector Specifications  
Operating temperature:  
Storage temperature:  
Environmental Rating:  
Humidity:  
Air Velocity:  
Dimensions:  
+32° to +131°F  
–22° to +158°F  
NEMA 4  
10% to 93% R.H. noncondensing  
100 to 4000 ft./min.  
14.38L x 5.5W x 2.75D  
3.75 pounds  
0° to +55°C  
–30° to +70°C  
0.5 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  
n/a  
10A @ 250 VAC  
1/4 HP @ 240 VAC  
1/8 HP @ 120 VAC  
RA400Z  
RTS451  
RTS451KEY  
SSK451  
0mA  
n/a  
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.  
12mA*  
n/a  
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,  
Trouble contacts (SPDT)  
2.0A @ 30 VDC (resistive)  
2.0A @ 125 VAC (resistive)  
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 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 num-  
ber, 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, unreasonable use, modifications, or alterations occurring after the date of  
manufacture. In no case shall the Company be liable for any consequential or inci-  
dental 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 conse-  
quential 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.  
D200-24-00  
8
I56-0056-07R  

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