dormakaba 1856 HT SD, 1856 SFT SD Installation Instructions
08220880
03-2020
1800 Closer
15
Wiring
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.
2.
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.
SD-2
SD-2
SD-2
13
12
1
8
2
9
10
3
4
5
6
7
15
14
11
13
12
1
8
2
9
10
3
4
5
6
7
15
14
11
13
12
1
8
2
9
10
3
4
5
6
7
15
14
11
(2)
(3)
(1)
2a.
For units used in conjunction with remote are 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 2 above, for
unit 1, 2, or 3 below. The vertical dashed lines indicate where one (1) diagram would be exchanged for
another.
SD-2
SD-2
SD-2
.
13
12
1
8
2
9
10
3
4
5
6
7
15
14
11
(2)
(3)
(1)
13
12
1
8
2
9
10
3
4
5
6
7
15
14
11
13
12
1
8
2
9
10
3
4
5
6
7
15
14
11
C
NO
C
NO
C
NO
Remote
Detector
Remote
Detector
Remote
Detector
4.10 SD-2 detector interconnection
Fig.19
#4
#15
#4
#15
#4
#15
#4
#15
#10
#4
#15
#10
#4
#15
#10
Alarm relay
Alarm relay
Alarm relay
