SD500-PS/SD500-PSDA
Addressable Fire Pull Station
Installation Instruction
The SD500-PS/PSDA is an addressable fire pull
station. The SD500-PS/PSDA is a normally
open initiating point compatible with Silent
Knight Addressable control panels. The SD500PS/PSDA is designed for indoor use in nonexplosive environments. Used to activate a noncoded alarm instantly.
An on-board status LED is visible from the front
of the pull station. The LED flashes to indicate
proper communication with the FACP
(approximately every 30 seconds).
Operation
To activate the fire pull station:
1. Grab the top of the pull station where it is
labeled “PULL”.
2. Pull the cover plate out and down.
To reset the pull station:
1. Insert key into the lock.
2. Turn the key clockwise.
3. Close the cover plate.
4. Turn the key counter clockwise.
Wiring to the SD500-PS/PSDA
Wire the SD500-PS as shown in Figure 1.
Supervised
Power Limited
Specifications
Parameter Rating
Max. Line resistance 50Ω
Max. Alarm
Current
Max. Voltage 33 V
Operating Temperature 0° to 49° C
Dimensions 5-1/8” H x 3-1/16” W x 1.5” D
One device in
alarm 23mA. 46
mA for two
devices in alarm.
.5 mA for each
additional device in
alarm.
(32° to 120° F)
Figure 1: Fire Pull Station Wiring
Mounting the SD500-PS/PSDA
The pull station mounts to a standard single gang
electrical switch box or a surface mount back
box P/N PS-SMBB (sold separately). See Figure
2.
P/N 151177
SD500-PS/SD500-PSDA Addressable Fire Pull Station Installation Instruction
Single Gang
Electrical
Switch Box
PS-SMBB
Mounting
Holes
To meet ADA requirements the
pull station must be mounted 48"
from the floor for wheelchair forward
access and no more than 54" from
the floor for wheelchair side access
Figure 2: Mounting the Fire Pull Station
Installing The SD500-LK
The SD500-LK is used to convert the SD500-PS (single action pull station) to a SD500-PSDA (Dual
action pull station. Refer to Figure 3 to install the SD500-LK Dual Action Conversion Kit.
Figure 3: SD500-LK Installation
Maple Grove, MN 55369-4927
763-493-6455 or 800-328-0103
2
© 2006 Silent Knight PN 151177 Rev D
7550 Meridian Circle
Fax: 763-493-6475
www.silentknight.com