SilentKnight Plex 2 Door Option - Manual

P/N 151347
PLEX-1 & PLEX-2 Overview
The following instructions should be used to
properly install the PLEX-1 and PLEX-2 door
option.
The PLEX door option is used in jurisdictions
that require single button operation of the reset
and silence functions on the fire alarm control
panel. The PLEX door option protects the on-
board annunciator with a UV stabilized
polycarbonate clear window. Once the panel
door is opened the operator can reset or silence
the control panel by pressing the Reset or
Silence button (no access code required).
Compatible Control Panels
Table 1 list what cabinet P/N use which PLEX
model number. Refer to the wiring diagram on
the inside of the control panel door to find the
Enclosure P/N.
Included Parts
Installation Instructions
Follow these steps to properly install the PLEX
door option.
Polycarbonate Window Installation
1. If a black plastic bezel, which ships with the
control panel (see Figure 1) is already
installed in the control panel door window,
remove it.
Figure 1: Front View of Control Panel Door
2. From the front of the control panel door
insert the Plex metal bezel with the mounting
studs facing the inside to the cabinet. Refer
to Figure 2.
Figure 2: Inside View of Control Panel Door
3. From the inside of the cabinet place the
polycarbonate window over the mounting
studs, sandwiching the cabinet door.
4. Secure the window in place by placing the
hex nuts onto the mounting studs and gently
tightening them down.
Table 1: Compatible Control Panel Enclosures
Enclosure P/N PLEX-1 PLEX-2
122723 
122365 
P/N Qty. Description
122826 1
UV Stabilized Clear
Polycarbonate Window
122830 PLEX-1
1 Dead-front panel or
122828 PLEX-2
122831 1
Metal Bezel w/mounting
studs
119539 6 #6-32, 1/4” Hex Nuts
119624 4
#6-32 x 1/4” phillips zinc
coated screws
Clear Window
Mounting
Stud
Hex
Nut