spread of smoke through HVAC air handling systems.
As an ionization duct detector, it’s ultra-responsive to
submicron-sized smoke particles typically found near
a fire source.
The DH100ACDCI senses smoke in velocities from 500 to 4,000 feet
per minute. When smoke is detected, all interconnected Innovairs
will initiate their relays. However, to quickly locate the fire source,
only the detector sensing smoke will alarm. Two DPDT Form-C relay
contacts, connected to auxiliary equipment, can also be configured
to prevent the spread of smoke through a particular area.
Beyond its reliable performance, the DH100ACDCI is simple to install
and maintain. Powered by 24 VAC/DC or 120/240 VAC, it can be easily
mounted to round and rectangular ducts, from one to twelve feet
in width, with outside mounting tabs. It also offers an adjustable
telescopic sampling tube that can be used for duct widths up to 18
inches. The tube locks into place – no additional tools are necessary.
Its modular construction allows for easy cleaning and field
replacement of the power and sensor boards. Also simplifying
maintenance is a transparent cover that provides convenient visual
inspection. If the cover is removed, a patented cover-tamper trouble
signal gives a 7-minute delay before the panel or remote accessory is
notified of trouble.
At a remote location, the remote test station option ensures that
a detector is functioning properly, and the remote sounder/LED
indicator options signal if a detector is in alarm. However, the cover
does not need to be removed if a detector needs to be reset at the
detector. Simply push the built-in reset button.
WARNING:
Duct smoke detectors are
NOT
a substitute for open
area smoke detectors,
NOT
a substitute for early warning detection
and
NOT
a replacement for a building’s regular fire detection system.
Refer to NFPA 72 and 90A for additional information.
Features
• Ionization technology
• An air velocity rating from 500 feet per minute to 4,000 feet per
minute (2.54 meters per second to 20.32 meters per second)
• Patented interconnectability for multi-fan shutdown
• Two DPDT Form-C relay contacts
• 24 VAC/DC or 120/240 VAC
• Versatile mounting options
• Outside mounting tabs
• A patented telescopic sampling tube
• Modular construction
• A patented cover-tamper trouble signal
• A transparent cover
• A remote test station
• Remote sounder/LED indicator options
• A built-in reset button
Agency Listings
268A
Innovair Duct Smoke Detector Specifications
Architectural/Engineering Specifications
The air duct smoke detector shall be a System Sensor Model DH100ACDCI Series Duct Smoke Detector. The detector housing shall be UL listed per UL 268A
specifically for use in air handling systems. The detector shall operate at air velocities of 500 feet per minute to 4000 feet per minute (2.54 to 20.32 meters/
second). The unit shall be capable of controlling up to ten (10) air handling systems when interconnected with other detectors. The detector shall be capable of
providing a trouble signal in the event that the front cover is removed. It shall be capable of local testing via magnetic switch or remote testing using the SSK451
Multi-Signaling Accessory or the RTS451KEY Remote Test Station. The unit shall be reset by local reset button or remote test station. The duct smoke detector
housing shall incorporate an airtight smoke chamber in compliance with UL 268A, Standard for Smoke Detectors for Duct Applications. The housing shall be
capable of mounting to either rectangular or round ducts without adapter brackets. An integral filter system shall be included to reduce dust and residue effects
on detector and housing, thereby reducing maintenance and servicing. Sampling tubes shall either be telescoping or be easily installed by passing through the
duct housing after the housing is mounted to the duct. The unit shall provide a spacial separation of no less than ¼˝ (6.4 mm) and/or a physical barrier between
the high and low voltage terminals. The enclosure shall meet all applicable NEC and NFPA standards regarding electrical junction boxes. Terminal connections
shall be of the strip and clamp method suitable for 12–18 AWG wiring.
Note: Alarm auxiliary contacts must switch 100mA minimum at 5 VDC. Alarm auxiliary contacts shall not be connected to initiating circuits of control panels. Use
*Note: When a unit is powered at the 120 VAC or 220/240 VAC 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.
A05-0315-002
Wiring Guide
System wiring diagram for 4-wire duct smoke detectors
AVAILABLE POWER INPUTS
POWER INPUTS ACCEPT
24 VDC, 24 VAC 50-60 HZ,
120 VAC 50-60 HZ, OR
220/240 VAC 50-60 HZ.
CONNECT POWER SOURCE
TO APPROPRIATE TERMINALS
OF EACH DETECTOR.
9
10
A
B
C
9
AVAILABLE POWER INPUTS
10
A
B
C
CONNECT POWER SOURCE
TO APPROPRIATE TERMINALS
OF EACH DETECTOR. SEE
SPECIFICATIONS FOR
ADDITIONAL POWER SUPPLY
INFORMATION.
24V
120
VAC
24V
120
VAC
220/240
VAC
ALARM AUXILIARY CONTACTS
FOR FAN SHUTDOWN, ETC.
18
7
17
6
16
N.C.
C.
N.O.
N.O.
C.
220/240
VAC
ALARM AUXILIARY CONTACTS
FOR FAN SHUTDOWN, ETC.
8
N.C.
16
N.C.
6
C.
17
N.O.
7
N.O.
18
C.
8
N.C.
FOR WIRING OF AUXILIARY
DEVICES, REFER TO
MANUFACTURER'S
INSTALLATION INSTRUCTIONS
OR CONTACT MANUFACTURER.
NOTE:
THE SUPERVISORY RELAY NOW
PROVIDES A "FORM C" CONTACT FOR
CUSTOMIZED APPLICATIONS.
FOR STANDARD APPLICATIONS, ONLY
THE "NO" CONTACT IS USED
AUX. CONTACT RATINGS
10A @ 30 VDC RESISTIVE
10A @ 250 VAC
100mA MINIMUM @ 5 VDC
NOT INTENDED FOR
CONNECTION TO CONTROL
PANELS.
ALARM AUXILIARY CONTACTS SHOWN IN
STANDBY. CONTACTS TRANSFER DURING
ALARM AS INDICATED BY THE ARROWS.
TROUBLE CONTACT RATING
2.0 A @ 30 VDC resistive
SUPERVISORY TROUBLE CONTACTS
14
3
ALARM AUXILIARY CONTACTS SHOWN IN
STANDBY. CONTACTS TRANSFER DURING
ALARM AS INDICATED BY THE ARROWS.
SUPERVISORY TROUBLE CONTACTS
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
ALARM
INITIATION
LOOP
ALARM
INITIATION
CONTACTS
4
CONTACTS SHOWN
OPEN IN STANDBY.
CONTACTS CLOSE
IN ALARM.
ALARM
INITIATION
CONTACTS
4
5
CONTACTS SHOWN
OPEN IN STANDBY.
CONTACTS CLOSE
IN ALARM.
–
UL LISTED 4-WIRE
CONTROL PANEL
FIRST DETECTOR IN THE LOOP
DH100ACDCI
LAST DETECTOR IN THE LOOP
DH100ACDCI
EOL RESISTOR
SPECIFIED BY
PANEL MANUFACTURER
Wiring diagram for the DH100ACDCI to RTS451/
RTS451KEY and interconnect feature:
DH100ACDCI
Alarm Signal
Aux. Power +
Sup. N. O.
Sup. COM
Aux. Power –
Reset
Test
Interconnect –
15
19
14
3
20
2
11
1
2
3
4
5
RTS451/RTS451KEY
1
6
(Red LED) Alarm
(Green LED)
Power
Wiring diagram for DH100ACDCI to SSK451 and
interconnect feature:
FIELD INSTALLED
JUMPER FOR
TEMPORAL PATTERN
COMMON
TEMPORAL SELECT
ALARM SIGNAL
SUPERVISORY SIGNAL
RESET
TEST
POWER (–)
POWER (+)
3
2
1
4
7
8
6
5
15
3
14
2
11
20
19
12
1
SSK451
FIELD INSTALLED
JUMPER
ALARM SIGNAL
NO
SUPERVISORY
CONTACT
Wiring diagram for DH100ACDCI to APA451:
DH100ACDCI
Alarm Signal
Aux. Power +
Sup. N. O.
Sup. COM
Aux. Power –
15
19
14
3
20
1 Common
3 Power
APA451
2 Alarm
*
RESET
TEST
AUX. POWER (–)
AUX. POWER (+)
INTERCONNECT +
INTERCONNECT –
DH100ACDCI
UNIT 1
NOTE: Wiring diagram shown is for DH100ACDCI 4-wire duct
smoke detector system equipped without a control panel.
NOTE: A trouble condition is indicated when the green LED
is not illuminated.
12
1
INTERCONNECT +
INTERCONNECT –
DH100ACDCI
UNIT 2
Interconnect +
12
Unit 1
DH100ACDCI
UNIT 2
Interconnect –
1
*
NOTE: For RTS451KEY only
without a Control Panel.
RTS451 does not have a terminal 6.
NOTE: Wiring diagram shown is for
DH100ACDCI 4-wire duct
smoke detector system equipped
without a control panel.
NOTE: A trouble condition is indicated
when the green LED is not
illuminated.
Interconnect + 12
Coil Note:
Please note that the magnetic coil supplied with
the RTS451/RTS451KEY is not required when these
accessories are used with the DH100 detectors.
The functionality of the magnetic coil has been
designed into the circuitry of the Innovair duct
smoke detectors.
*NOTE: For RTS451KEY only without a Control
Panel.
RTS451 does not have a terminal 6.
NOTE: Wiring diagram shown is for DH100ACDCLP
4-wire duct smoke detector system
equipped without a control panel.
NOTE: A trouble condition is indicated when the
green LED is not illuminated.
Important Interconnect Notes
• When using the interconnect feature, all interconnected units must be powered with the same, independent supply.
• 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 terminal 1 on unit 2 and so on.
A05-0315-002
Accessories
System Sensor provides system flexibility with a variety of accessories, including two remote test stations and several different means of
visible and audible system annunciation. As with our duct detectors, all duct smoke detector accessories are UL listed.
APA451
Piezo Annunciator
(UL S4011)
RTS451KEY
Remote Test Station
with Key (UL S2522)
PA400W
Mini-Alert Sounder
(UL S3593)
shown with PS24LOW add-on
strobe (PS12/24SLENSW smoke
lens option available)
RTS451
Remote Test Station
(UL S2522)
RA400Z
Remote Annunciator
(UL S2522)
SSK451
Multi-Signaling
Accessory
(UL 268A)
SSK451
Multi-Signaling Accessory
(UL 268A)
shown with PS24LOW add-on
strobe (PS12/24SLENSW smoke lens
option available)
Ordering Information
Part No.
DH100ACDCI
A5052
A5064
Accessories
ST-1.5
ST-3
ST-5
ST-10
T80-71-00
P48-55-00
SSK451
RTS451KEY
RTS451
APA451
Description
4-wire ionization duct smoke detector
Replacement ionization detector board
Replacement 4-wire power board
Metal sampling tube duct widths 1´–2´ (0.3–0.6 m)
Metal sampling tube duct widths 2´–4´ (0.6–1.2 m)
Metal sampling tube duct widths 4´–8´ (1.2–2.4 m)
Metal sampling tube duct widths 8´–12´ (2.4–3.7 m)
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