911352_00(5) Page 3 of 8
Single Door Application
Component
Picture
Function
Optional/Required
If Not Used...
24 VDC power supply
Power transfer
(EPT-10 shown)
External alarm
Building fire alarm
(normally closed contacts)
External inhibit device
(card reader, key switch, etc.;
normally closed contacts)
Door position switch
(normally closed contacts)
Supplies power to Chexit
Provides louder alarm than
Chexit internal horn
Unlocks Chexit in case
of fire alarm
Arms Chexit 2.5 seconds
after door closes; sounds
alarm if door forced open
Allows authorized egress
or ingress without alarm
Transfers electrical power
through frame to door
(wires concealed)
Required
Insulate blue and
brown wires
separately
Required
Connect orange
wire to white
wire
Connect green
wire to
white wire
Use door loop or
electric hinge
Required
(Von Duprin PS873)
Highly
recommended
Optional
Required
Optional (wire multiple
external inhibit devices
in series)
Optional
FIRE
Used?
Yes
Yes
Table 1. Installation Components
TYPICAL WIRING
}
Figure 2. Wiring Connections, Single Door
Blue (C)
Black (GND)
Red (+24)
Brown (NO)
Gray (CM+)
Violet (CM-)
Cable to
Chexit
device
Power
transfer
Yellow (FA)
Green (EI)
Orange (DPS)
White (SC)
Power supply
input
GND
+24
_
+
Power supply
output
FIRE
Figure 1. Component Placement and
Wiring Requirements, Single Door
External
alarm
Power
supply
EPT
Junction
box
DPS
Chexit
External
inhibit
3 x 14 GA
2 x
*
2 x 18 GA
(plus power if
required)
2 x 18 GA
8 x 18 GA
plus 2 x
*
2 x 18 GA
*
*
*
See “Power
Supply Output”
in Table 2 for
wire GA
*
Not used;
insulate
separately
