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
1
I56-1147-12R
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 1″ to 2″ of 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 11⁄2 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 11⁄2 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
3⁄4″ hole 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
smoke detector.
3
I56-1147-12R
Install the inlet tube as follows:
[5.5] Install The Filters
1. Drill a 3⁄4-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 2″ below 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 2″ of 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 1⁄4-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
4
I56-1147-12R
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
5
I56-1147-12R
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
6
I56-1147-12R
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
7
I56-1147-12R
[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.
14.38″ L x 5.5″ W x 2.75″ D
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
8
I56-1147-12R
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