911352_00(5) Page 4 of 8
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
Power Supply Input
Power Supply Output
(+24 and GND)
External Alarm, Fire Alarm,
Door Position Switch,
External Inhibit Device
EPT-10
EPT-10
Electric Hinge
Electric Hinge
EPT-10,
Electric Hinge
N/A
Per code
100 feet
200 feet
75 feet
150 feet
Per code
14 GA
12 GA
14 GA
12 GA
18-22 GA
Not critical
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 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 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
S C
GND
The wiring requirements in Table 2
below must be followed.
IMPORTANT
!
+24
Power transfer
Power transfer
Cable to
Chexit
device
Cable to
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
Power supply
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
