15
19
14
3
20
1
3
2
Alarm Signal
Aux. Power +
Sup. N. O.
Sup. COM
Aux. Power –
NOTE: Wiring diagram shown is for DH100ACDCLP 4-wire duct
smoke detector system equipped without a control panel.
Alarm
(Red LED)
Power
(Green LED)
Common
APA451
DH100ACDCLP
NOTE: A trouble condition is indicated when the green LED
is not illuminated.
D200-14-00
6
I56-0084-009R
Figure 9. Wiring diagram for DH100ACDCLP
to APA451:
H0158-01
Figure 8. System wiring diagram for 4-wire duct smoke detectors:
Figure 10. Wiring diagram for DH100ACDCLP to
RTS451/RTS451KEY:
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 termi-
nal 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.
• Up to 10 units may be interconnected.
Figure 11. Multiple fan shutdown (interconnect):
1
6
12
16
A
B
C
FAN
CONTROL
SYSTEM
CONTROL
POWER OR
THERMOSTAT
1
6
12
16
A
B
FAN
CONTROL
SYSTEM
CONTROL
POWER OR
THERMOSTAT
DETECTOR 1
C
DETECTOR 2
1
6
12
16
A
B
FAN
CONTROL
SYSTEM
CONTROL
POWER OR
THERMOSTAT
C
DETECTOR 10
OUT TO
10 DETECTORS
MAXIMUM
24V
9
10
AVAILABLE POWER INPUTS
ALARM AUXILIARY CONTACTS
FOR FAN SHUTDOWN, ETC.
16
6
17
7
18
8
N.C.
C.
N.O.
N.O.
C.
N.C.
ALARM AUXILIARY CONTACTS SHOWN IN
STANDBY. CONTACTS TRANSFER DURING
ALARM AS INDICATED BY THE ARROWS.
SUPERVISORY TROUBLE CONTACTS
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.
24V
9
10
AVAILABLE POWER INPUTS
ALARM AUXILIARY CONTACTS
FOR FAN SHUTDOWN, ETC.
16
6
17
7
18
8
N.C.
C.
N.O.
N.O.
C.
N.C.
ALARM AUXILIARY CONTACTS SHOWN IN
STANDBY. CONTACTS TRANSFER DURING
ALARM AS INDICATED BY THE ARROWS.
SUPERVISORY TROUBLE CONTACTS
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.
14
3
3
14
4
5
ALARM
INITIATION
CONTACTS
CONTACTS SHOWN
OPEN IN STANDBY.
CONTACTS CLOSE
IN ALARM.
4
5
ALARM
INITIATION
CONTACTS
CONTACTS SHOWN
OPEN IN STANDBY.
CONTACTS CLOSE
IN ALARM.
ALARM
INITIATION
LOOP
UL LISTED 4-WIRE
CONTROL PANEL
FIRST DETECTOR IN THE LOOP
DH100ACDCLP
LAST DETECTOR IN THE LOOP
DH100ACDCLP
EOL RESISTOR
SPECIFIED BY
PANEL MANUFACTURER
CONNECT POWER SOURCE
TO APPROPRIATE TERMINALS
OF EACH DETECTOR. SEE
SPECIFICATIONS FOR
ADDITIONAL POWER SUPPLY
INFORMATION.
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
POWER INPUTS ACCEPT
24 VDC, 24 VAC 50-60 HZ,
CONNECT POWER SOURCE
TO APPROPRIATE TERMINALS
OF EACH DETECTOR.
AUX. CONTACT RATINGS
10A @ 30 VDC RESISTIVE
100mA MINIMUM @ 5 VDC
1/4 HP @ 240 VAC
1/8 HP @ 120 VAC
NOT INTENDED FOR
CONNECTION TO CONTROL
PANELS.
TROUBLE CONTACT RATING
2.0 A @ 30 VDC resistive
2.0 A @ 125 VAC resistive
+
120
VAC
220/240
VAC
A
B
C
220/240
VAC
A
B
C
120
VAC
15
19
14
3
20
2
11
2
6
1
Alarm Signal
Aux. Power +
Sup. N. O.
Sup. COM
Aux. Power –
Reset
Test
(Red LED) Alarm
(Green LED)
Power
DH100ACDCLP
RTS451/RTS451KEY
5
4
3
*
For RTS451KEY
only without a
control panel.
*
CAUTION
Do not loop wire under terminals when wiring detectors. Break wire runs to provide system supervision of connections.
H0155-01
H0156-00
H0157-00
