SD-2
15
7
5
14
13
12
11
10
9
1
6
4
3
2
8
SD-2
15
7
5
14
13
12
11
10
9
1
6
4
3
2
8
SD-2 DETECTOR TO AUXILIARY SOLENOID CONNECTION
SOLENOID ATTACHMENT TO UL/ULC LISTED ALARM CONTROL PANEL
SD-2 DETECTOR INTERCONNECTION
NOTE: Make this connection the same time as the main hold open solenoid
connection. Strip approximately 1/4" of plastic insulation from the ends
of the wires. Connect auxilliary hold open solenoid wires to
9&6 of SD-2 detector.
Some applications may require input power to the hold open
electromagnet to be supplied through a UL/ULC listed alarm control
panel so the hold open electromagnet functions separately from the
internal detector module. This application requires the alarm
contacts of the SD-2 detector and any remote detectors
to be connected to the alarm contacts of the control panel. An alarm indication to
the panel results in the loss of power to the hold open electromagnets in the related
zone, which allows the doors to close. Wire main electromagnet to alarm control panel as
illustrated.
POWER IN
PANEL
CONTROL
LISTED ALARM
UL/ULC
24VOLT ONLY
ELECTROMAGNET
HOLD OPEN
OPEN ELECTROMAGNET
AUXILIARY HOLD
14
7
2
1
3
9
8
10
4
5
6
11
12
13
15
SD-2
ELECTROMAGNET
MAIN HOLD
OPEN
SD-2
15
7
5
14
13
12
11
10
9
1
6
4
3
2
8
SD-2
15
7
5
14
13
12
11
10
9
1
6
4
3
2
8
SD-2
15
7
5
14
13
12
11
10
9
1
6
4
3
2
8
SD-2
15
7
5
14
13
12
11
10
9
1
6
4
3
2
8
1. Up to (5) SD-2 detectors, with or without connection to an auxiliary unit or remote area detector may
be interconnected. This limitation applies only to interconnected units and assumes a power supply large
enough to handle this load if the power supply is common to all units interconnected. Separate power
supplies may be used for each SD-2 detector while permitting the units to be interconnected.
2a. For units without connection to remote detectors, connect terminal #15 (+) between the units to be
interconnected. Connect terminal #4 (-) between the units to provide a common for the interconnection.
Additional units are wired in the same manner as unit #2 but no more than five (5) units can be
interconnected.
2b. For units used in conjunction with remote area detectors, complete wiring connections as illustrated
below. Heed caution note in SD-2 DETECTOR TO REMOTE AREA DETECTOR section of instruction sheet.
Additional units are wired in the same manner as unit #2 but no more than five (5) units can be
interconnected. Installations using a combination of SD-2 detector modules with or without remote area
detectors can be wired accordingly by substituting the wiring diagram from unit 1, 2, or 3 in step 2a.
above for unit 1, 2, or 3 below. The vertical dashed lines indicate where one (1) diagram would be
exchanged for another.
C
NO
NO
C
NO
C
REMOTE
DETECTOR
REMOTE
DETECTOR
REMOTE
DETECTOR
(1)
(2)
(3)
(1)
(2)
(3)
INS NO.
PAGE
Rev.
08280990
8 of 14
08/13
