Technical Bulletin
SuperDuct Conventional Two-Wire Duct Smoke Detector
9
9
7
11
1
12
2
14
3
13
4
15
16
17
10
8
Auxiliary
equipment
Alarm
SD-TRK or SD-TRM [2]
CAUTION
Do not use looped wires under terminals 7, 9, 8,
and 10. Break wire run to provide supervision of
connections.
Initiating device circuit
on UL/ULC listed fire
alarm control panel
−
+
Alarm
relay
[3]
9
7
11
12
14
13
15
16
17
10
8
Auxiliary
equipment
Alarm
relay
[3]
To next device or to
end-of-line resistor [1]
Notes
[1] End-of-line resistor is required
on the last detector only. The value
is determined by the fire alarm
control panel's initiating device
circuit.
[2] No more than one remote test
station can be connected at the
same time. Wiring is unsupervised.
Maximum wire resistance is 10
ohms per wire.
[3] Only the first detector to go into
alarm operates its alarm relay.
Operation of the alarm relay can't
be guaranteed if a manual initiating
device on the same circuit is
activated.
1
2
3
4
Alarm
SD-TRK or SD-TRM [2]
Figure 8: Installation wiring diagram (IDC short circuit current
≤
100 mA)
6
5
11
12
14
13
15
16
17
10
8
Auxiliary
equipment
CAUTION
Do not use looped wires under terminals 5, 6, 8,
and 10. Break wire run to provide supervision of
connections.
Initiating device circuit
on UL/ULC listed fire
alarm control panel
−
+
Alarm
relay
[3]
6
5
11
12
14
13
15
16
17
10
8
Auxiliary
equipment
Alarm
relay
[3]
To next device or to
end-of-line resistor [1]
Notes
[1] End-of-line resistor is required
on the last detector only. The value
is determined by the fire alarm
control panel's initiating device
circuit.
[2] No more than one remote test
station can be connected at the
same time. Wiring is unsupervised.
Maximum wire resistance is 10
ohms per wire.
[3] Only the first detector to go into
alarm operates its alarm relay.
Operation of the alarm relay can't
be guaranteed if a manual initiating
device on the same circuit is
activated.
1
2
3
4
Alarm
SD-TRK or SD-TRM [2]
1
2
3
4
Alarm
SD-TRK or SD-TRM [2]
Figure 9: Installation wiring diagram (IDC short circuit > 100 mA)
