CO Guardian LLC
Document No.
03-452-201
1951 E. AIRPORT DRIVE
Date: 8/20/2006
TUCSON, AZ. 85706
REV F
MODEL 452-201 OWNERS MANUAL
Page 15 of 22
d. Install the CO Alert momentary Test/Reset switch on the L/H instrument panel in
accordance with drawing, Section C-C. Placard or engrave the TEST/RESET switch as
CO TEST/RESET
in accordance with drawing, Flag Note 11. Remote reset is not required
if remote reset is capable by Multi Function Display. See MFG installation Manual.
e. Wire the CO Detector installation in accordance with applicable drawing wiring diagram.
452-201-005 through 452-201-010
PIN
FUNCTION
1
14 or 28 VDC Power Input
2
Remote Test/Reset Switch
3
Remote Test/Reset Switch/Ground for
RS232 Displays
4
CO Alert Relay –Goes to Ground
5 Power
Ground
6 Not
Used
7
RS-232 TX Output
8
RS-232 RX Input
9
Pressure Relay -Goes to Ground
CO DETECTOR CONNECTOR PINS AND FUNCTION
6.2.4 INSTALLATION CHECKS
a. With the CO Detector disconnected from the aircraft harness, conduct a continuity
check of the added aircraft wiring.
b. Turn ON the aircraft Battery Switch. Close the CO DETECT circuit breaker and
measure aircraft voltage between pins 1 and 5 of the CO Detector connector. Pull the
CO DETECT circuit breaker. Verify the voltage between pins 1 and 5 is OFF.
c. Close the CO DETECT KEEP ALIVE circuit breaker and measure aircraft voltage
between pins 9 and 5 of the CO Detector connector. Turn aircraft Battery switch OFF.
Measure aircraft voltage between pins 9 and 5 of the CO Detector connector. Pull the
CO DETECT KEEP ALIVE circuit breaker. Verify the voltage between pins 9 and 5 is
OFF.
d. Connect the CO Detector connector to the aircraft harness. Turn aircraft Battery
Switch ON. Close CO DETECT circuit breaker.
e. Operational check the unit by depressing the CO Test/Reset switch and verifying the
remote alert light operation. Remote Amber Alert light should flash twice.
452-201-005 through 452-201-011
