dormakaba 1856 HT SD, 1856 SFT SD Installation Instructions
08220880
03-2020
1800 Closer
14
Wiring
SD-2
Strip approximately 1/4” of plastic insulation from the end of the two solenoid wires supplied. Connect one
end each of the solenoid wires to terminals 6 & 9 of the SD-2 detector as shown.
13
12
1
8
2
9
10
3
4
5
6
7
15
14
11
Main solenoid
Main hold
solenoid
Auxiliary solenoid
13
12
1
8
2
9
10
3
4
5
6
7
15
14
11
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. Run wires from the solenoid of the
auxiliary unit. Connect one (1) of each wire into terminals #9 and #6
of the SD-2 smoke detector.
UL/ULC listed
alarm control
panel
Solenoid
P
ow
er
In
4.7 SD-2 detector to main solenoid connection
4.8 SD-2 detector to auxiliary solenoid connection
4.9 Solenoid attachment to UL/ULC listed alarm control panel
Fig.16
Fig.17
Fig.18
#6
#9
Some applications may require input power to the hold open solenoid to be supplied through a UL/ULC listed
alarm control panel so the hold open solenoid 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 solenoids in the related zone, which allows the doors to close. Wire main solenoid to alarm control panel
as illustrated.
#6
#9
