Von Duprin Chexit CX33A/35A User manual

911352_00(5) Page 1 of 8
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Installation Instructions – Electrical
CX33A/35A &CX98/99 Device
GENERAL INFORMATION
ELECTRICAL SPECIFICATIONS
Voltage...............................................................24 VDC
Current...............................................................0.4 A
Current on arming...........................................300-mS 16-A in-rush
External alarm dry contacts (NO and C)....24 VDC, 1 A rating
Normally closed inputs ..................................Fire alarm (FA; required)
External inhibit (EI)
Door position switch (DPS)
The Von Duprin Chexit device is designed for accident hazard or fire exit applications. It meets both life
safety and security needs as well as all requirements of NFPA101 for “Special Locking Arrangement” and
UBC “Special Egress-Control Devices.”
The Von Duprin Chexitdevice sounds an alarm and keeps an exit door secured for 15 seconds following an
attempt to exit. The Chexit releases immediately upon a fire alarm condition.
®
PUSH UNTIL ALARM SOUNDS
DOOR CAN BE OPENED
IN 15 SECONDS
CX Rim Exit Device
(CX98/99 shown) Chexit Module Cable Door Sign
T
M
T
HE
®
Do not exceed rated
specifications.
WARNING
!The Chexit device must be
installed in accordance
with these instructions by
a qualified electrician.
WARNING
!
Wiring must be in
accordance with all local
codes and regulations.
WARNING
!
VON DUPRIN®
911352-00

911352_00(5) Page2 of8
Complete the items on the checklist below before installing the Chexit module. Each component listed
should be prepared and installed according to the installation instructions supplied with it.
Mechanical Preparation
1. Door and frame have been prepared for power transfer.
2. Chexit device has been installed. (See instructions packaged with Chexit device.)
3. Trim such as a lever handle, if used, has been installed.
4. Suggested: Obtain a 1 1/4” or 1 3/8” mortise cylinder. (It is easier to install the mortise cylinder
during electrical installation than after electrical installation.)
Electrical Preparation
1. Read all of these instructions before installing the Chexit module.
2. If available, get a wiring diagram for your installation. Otherwise, refer to Figures 2 and 3 and
Table 1 in “Typical Wiring”and mark the components you use in Table 1.
3. Determine the physical location of each component used (see Figure 1).
4. Pull field wiring between component locations and frame side of power transfer (see Figure 1).
5. Mount components and connect them to field wiring (see Figure 2 or Figure 3).
6. Connect field wiring to frame side of power transfer. (Route wires through frame back box.)
7. Install frame back box and frame side of power transfer.
8. Get requirements for Chexit option switches, record in Table 3 in “Options,” and set switches.
9. Complete steps 1 through 10 of “Installation.”
To install mortise cylinder after electrical installation:
1. Remove end cap and end cap bracket (see “Installation” step No. 1).
2. Slide cover plate out until knurled ring is visible; install cylinder (see “Installation” step No. 5).
3. Complete steps Nos. 5, 7, 8, and 10 of “Installation.”
PRE-INSTALLATION CHECKLIST
Components must be connected to
wire colors as shown in Figures 2
and 3 in “Typical Wiring.”
IMPORTANT
!
The wiring requirements in Table 2 in
“Typical Wiring” must be followed.
IMPORTANT
!

911352_00(5) Page 3 of 8
Single Door Application
ComponentPicture Function Optional/Required If Not Used...
24VDCpowersupply
Powertransfer
(EPT-10shown)
Externalalarm
Building fire alarm
(normallyclosed contacts)
Externalinhibitdevice
(cardreader,keyswitch,etc.;
normallyclosed contacts)
Doorposition switch
(normallyclosed contacts)
Supplies power to Chexit
Provideslouderalarm than
Chexitinternalhorn
UnlocksChexit in case
of fire alarm
ArmsChexit 2.5 seconds
afterdoorcloses; sounds
alarmifdoorforcedopen
Allowsauthorizedegress
oringresswithoutalarm
Transferselectricalpower
throughframetodoor
(wiresconcealed)
Required
Insulateblueand
brownwires
separately
Required
Connectorange
wire to white
wire
Connectgreen
wire to
white wire
Usedoorloop or
electric hinge
Required
(VonDuprinPS873)
Highly
recommended
Optional
Required
Optional(wiremultiple
externalinhibitdevices
in series)
Optional
FIRE
Used?
Yes
Yes
Table1. Installation Components
TYPICAL WIRING
}
Figure 2. Wiring Connections, Single Door
Blue (C)
Black(GND)
Red(+24)
Brown(NO)
Gray(CM+)
Violet(CM-)
Cableto
Chexit
device
Power
transfer
Yellow (FA)
Green(EI)
Orange(DPS)
White (SC)
Powersupply
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
*
Notused;
insulate
separately

911352_00(5) Page4 of8
TYPICAL WIRING (continued)
Table 2. Wiring Requirements
Wiring Type of Power
Transfer
(door to frame)
Maximum Wire
Length from Power
Supply to Power
Transfer
Minimum
Wire Gauge
PowerSupplyInput
PowerSupplyOutput
(+24andGND)
External Alarm, Fire Alarm,
DoorPositionSwitch,
ExternalInhibitDevice
EPT-10
EPT-10
ElectricHinge
ElectricHinge
EPT-10,
ElectricHinge
N/A Percode
100 feet
200 feet
75 feet
150 feet
Percode
14 GA
12 GA
14 GA
12 GA
18-22GA
Notcritical
In this double door application, both doors open in the same direction and each is equipped with a Chexit. The two
Chexits are connected (ganged) by the gray (CM+) and violet (CM-) wires. (If not used, insulate these wires
separately.) When one Chexit is set into alarm, the other also goes into alarm, and both unlock after 15 seconds. A
fire alarm unlocks both doors at the same time. An external inhibit device also unlocks both doors at the same time.
After an external inhibit, the door that was used rearms 2 seconds after closing, and the unused door rearms after
the full rearm time. For proper operation, the rearm times of ganged Chexits must differ by at least 2 seconds.
Double Door Application
Wire Functions
Power supply +24 VDC
Common for NO output;
24 VDC, 1 A maximum
Normally open output;
closes during alarm
Communication line;
used to connect Chexits
Communication line;
used to connect Chexits
Fire alarm input;
0 VDC = fire,
24 VDC = no fire
Door position switch input;
0 VDC = door open,
24 VDC = door closed
External inhibit input;
0 VDC = Chexit inhibited,
24 VDC = Chexit active
Signal common +24 VDC;
can be used to power
FA, DPS, and EI inputs
Power supply ground
Red
Blue
Brown
Violet
Gray
Yellow
Orange
Green
White
Black
+24
C
NO
CM-
CM+
FA
DPS
EI
SC
GND
The wiring requirements in Table 2
below must be followed.
IMPORTANT
!
+24
Powertransfer Power transfer
Cableto
Chexit
device
Cableto
Chexit
device
Red(+24)
Black(GND)
Blue (C)
Brown(NO)
Violet(CM-)
Gray(CM+)
Yellow (FA)
Orange(DPS)
Green(EI)
White (SC)
GND _
+
Power
supply
output
Powersupply
input
Red(+24)
Black(GND)
Blue (C)
Brown(NO)
Violet(CM-)
Gray(CM+)
Yellow (FA)
Orange(DPS)
Green(EI)
White (SC)
FIRE
Figure 3. Wiring Connections, Double Doors

911352_00(5) Page 5 of 8
INSTALLATION
2Drill 5/8” diameter cable hole
midway between end cap bracket
holes. Do not drill through other
side of door. Run Chexit cable
through cable hole and door back
box. Install door back box.
5/8” dia.
3Connect cable wires to same
color power transfer door side
wires. Install door side of EPT-10
(shown) or finish installing
electric hinge.
4Slide module into cover plate
as shown.
1Remove end cap, end cap bracket,
and cover plate from Chexit device.
End cap bracket
Cover plate
End cap
Support hinge end of
mechanism case while end
cap bracket is not installed.
CAUTION
!

911352_00(5) Page6 of8
8Install end cap bracket and end cap.
Cable fits inside end cap bracket as shown.
INSTALLATION (continued)
9Remove backing from sign
and put sign on door above
Chexit device. (Sign is
packed in cardboard tube.)
10Go to “Operation” for testing
and troubleshooting.
3. Connect Chexit cable
(orient as shown)
2. Connect pushpad
cable 1. Connect
solenoid cable
6Route solenoid
cable under module
and slide cover
plate half way
into mechanism
case. Make three
connections shown.
Mechanism
case
7Solenoid
connectors
Position solenoid connectors
as shown. Pull cable slack
behind module while
slowly sliding module in. Push
cable connector away from
cover plate while sliding past
end of mechanism case.
5Install key cylinder if
available, otherwise
continue with step No. 6.
Red plastic plate
(beveled edge up)
Knurled ring
TIGHTEN
Cylinder cam is turned under
cylinder with key removed
Orient cylinder as
shown or unit will
not operate.
CAUTION
!
Turn off power supply
before connecting cables.
CAUTION
!

911352_00(5) Page 7 of 8
OPERATION
The operation of a Chexit with a door position switch is the same as described in the summary table, but:
•The Chexit enters Armed mode 2.5 seconds after the door position switch contacts close.
•If the door is held open and rearm time expires, the Chexit goes into Alarm mode.
•When in Armed mode, the Chexit goes into Alarm mode if the door position switch contacts open.
The basic function of a Chexit is to sound an alarm and keep an exit door secured for 15 seconds following
an attempt to exit. Test the operation of your Chexit by performing actions Nos. 1 through 6 in the summary
below.Make sure yourChexit matches thedescriptions in thesummary. If itdoes not, see“Troubleshooting.”
TROUBLESHOOTING
Turn Chexit off, then back on, using key switch. Compare Chexit operation with the following table to
identify problems and solutions. After troubleshooting, re-test Chexit using steps under “Operation.”
Symptom
Red LED flashes fast and
hornsounds
Problem
Firealarmcontacts open
1. Externalinhibitcontacts open
2. Externalinhibitfunctionnotused
andwiresnotterminatedproperly
Red LED flashes once
Solution
Connectnormallyclosed fire alarm contacts
between yellow and white wires
1. Connectnormallyclosedexternal inhibit
contacts between green and white wires
2. If external inhibit not used, connect green and
white wires together
Red LED does not light PowernotreachingChexit Replace/resetACfuse/circuitbreaker;
checkpowersupply input/output voltages;
checkinputvoltageatChexitcableconnector
Red LED on solid then flashes fast
andhorn sounds 1. Pushpadpressed
2. Pushpadswitch disconnected 1. Release the pushpad
2. Connectpushpadswitchconnectors (see step
No.6of “Installation”)
Red LED on solid then flashes
fast,hornsounds, and solenoid
pulls in for one second (two
sharpsounds)
1. Dooropen
2. Doorposition switch contacts
open
3. Doorpositionfunction not used
andwiresnotterminatedproperly
1. Closedoor
2. Connectnormallyclosed door positionswitch
contactsbetweenorange and white wires
3. Ifdoorpositionswitchnotused, connect
orange and white wires together
Action
1. Turn on Chexit with key switch
(turnkeyclockwise)
Mode Pushpad Red LED Alarm Duration
Rearm Unlocked On solid Off Rearm time
(0-28seconds)
Summary of Chexit Modes
2. Rearm time expires
3.Press pushpad
4. 15secondreleasedelayexpires
Armed
Releasedelay
Alarm Unlocked
Locked
Locked
Slow flash
Fastflash
Fastflash
Off
On
On
Continuous
15seconds
Continuous
5. Turnoffkeyswitchoractivate
EI(externalinhibit) Inhibit Unlocked Off Off Returns to rearm mode
when key switch turned
on or EI reset
6. Firealarmcontacts open Alarm Unlocked Fast flash On if option switch
No. 8 is off Continuous(turnoffkey
switchtoclear)

911352_00(5) Page8 of8
Options are set by switches on the Chexit module. Before changing option settings, turn the Chexit off.
Changes in option settings take effect when the Chexit is turned on.
Seconds Switch No. 1 Switch No. 2 Switch No. 3 Switch No. 4
0
2
4
6
8
10
12
14
16
18
20
22
24
26
28
infinite
Rearm Time Switch Settings
off
on
off
on
off
on
off
on
off
on
off
on
off
on
off
on
off
off
on
on
off
off
on
on
off
off
on
on
off
off
on
on
off
off
off
off
on
on
on
on
off
off
off
off
on
on
on
on
off
off
off
off
off
off
off
off
on
on
on
on
on
on
on
on
Rearm Time Notes
1. Set the rearm time a few seconds longer than
the door will be open so the door closes before
the Chexit arms.
2. The Chexit is shipped from the factory with the
rearm time set to 10 seconds.
3. When the rearm time is infinite, the Chexit
armswhenthedoorposition switch detects
that the door is closed.
4. When the rearm time is infinite, you must open
and close the door after the Chexit is turned on.
5. If a door position switch is used, the Chexit
arms2.5secondsafterthedoorcloses.
6. If you are using a door position switch but you
want the full rearm time to expire before the
Chexitarms,callVon Duprin at 1-888-371-7331
andgetinstructionsfromElectrical Technical
Support.
7. Forproper operation, the rearm time of each
ganged Chexit must differ by at least 2 seconds.
Location of Chexit
option switches
OPTIONS
Factory settings shown
8: Off
7: Off
6: Off
5: Off
4: Off
3: On
2: Off
1: On
Table 3. Chexit Options
Option
Rearm time
Nuisancedelay
Nuisancealarm
Function
Switches Nos. 1 through 4 set amount of time you have to pass through door
after turning on key switch or using an external inhibit device (see table below)
If switch No. 5 is on, the pushpad must be pressed 2 seconds to set off alarm
If switch No. 6 is on, the Chexit horn sounds while pushpad is pressed during
nuisancedelay;usein accordance with local code
Settings for Door No: ___
Self-test
Localfirealarm
If switch No. 7 is on, the Chexit performs a self-test when turned on; this
switch must be off for normal operation
If switch No. 8 is off, the Chexit internal horn sounds during a fire alarm
________ seconds
on off
on off
on off
on off