dormakaba 1856 HT SD, 1856 SFT SD Installation Instructions
08220880
03-2020
1800 Closer
16
Wiring
A remote open area detector can only be connected to a unit whose trouble relay contacts (#5 & #13) are
connected in a circuit for the purpose of obtaining an audible trouble signal in the event of a circuit fault. In the
event that the unit is used for releasing service only, the trouble contacts are connected to the trouble circuit of a
UL/ULC listed alarm control panel. This condition is satisfied by the four (4) and six (6) wire supervisory
connections in the alarm initiation wiring section. Perform wiring connections as illustrated below. NOTE: The
SD-2 is wired as the E.O.L. (end of line) device for the remote detector. Therefore, it must act as the last item in
the loop.
SD-2
13
12
1
8
2
9
10
3
4
5
6
7
15
14
11
24V AC/DC
Power Input
Remote
Detector
UL/ULC listed
audible signal
appliance
or control unit
1. Connect terminals #5 & #13 of a
singular unit directly to a UL/ULC
listed audible signal appliance or
alarm control panel.
SD-2
2. Installations with multiple
units in a run must be
connected to a UL/ULC listed
audible signal appliance or
alarm control panel as
illustrated below.
13
12
1
8
2
9
10
3
4
5
6
7
15
14
11
UL/ULC listed
audible signal
appliance
or control unit
SD-2
SD-2
SD-2
UL/ULC listed
audible
signal appliance
or control unit
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
4.11 SD-2 detector to remote area detector
4.12 SD-2 detector to audible signal appliance
Fig.20
Fig.21
NO
C
#3
#13
#5
#14
#5
#13
#5
#13
#5
#13
#5
#13
