System Sensor CO1224A Installation And Maintenance Instructions Download Page 1

CO1224A

Carbon Monoxide Alarm

INSTALLATION AND MAINTENANCE INSTRUCTIONS

NOTICE:

 This manual shall be left with the owner/user of this 

equipment.

WARNING:

 This product is intended for use in ordinary indoor 

locations of dwelling units, including homes, residential 

buildings, hotels, schools, dormitories, and day care centers. It is 

not intended for use in industrial factories or commercial parking 

garages. 

General Description

•  Listed to CSA 6.19-01

•  Six-wire, system monitored or stand-alone operation

•  Local sounder

•  Low current draw

•  Alarm relay, Form C

•  Trouble relay, Form A

•  Dual LED’s

•  Test/Hush button

•  SEMS wiring terminals

•  Mount to single gang electrical box or surface mount to wall 

or ceiling

•  Optional drywall anchors included

Figure 1. Alarm Location Diagram:

Specifications

Electrical Specifications

System Voltage
 

Nominal:  

12/24 VDC

 

Min: 

10 VDC 

 

Max: 

33 VDC

Avg. Standby Current: 

20 mA

Max Alarm Current: 

40 mA (75 mA test)

Alarm Contact Ratings: 

30 VDC @ 0.5 A

Trouble Contact Ratings: 

30 VDC @ 0.5 A

Audible Signal (temp 4 tone): 

85 dBA min. in alarm (at 10ft)

Max. Start-up Capacitance: 

20 uF

Physical Specifications

Operating Temperature Range: 

0° to 40°C (32° to 104°F)

Operating Humidity Range: 

22 – 90%  %RH

Length: 5.1˝
Width: 3.3˝
Height: 1.3˝
Weight: 

7 oz

Wire Gauge Acceptance: 

14-22 AWG

Table 1. Operation Modes: 

OPERATION 

MODE

GREEN

LED

RED

LED

SOUNDER

Normal 

(standby)

Blink 1 per 

minute

OFF

OFF

Alarm

OFF

Temp 4* pattern

Temp 4* pattern

Alarm Test

OFF

Temp 4 pattern

Temp 4 pattern

RealTest Mode

Blink 1 per 

second (waiting 

for gas entry)

OFF (Red after 
CO is sprayed)

Temp 4 pattern 

(after CO is 

sprayed)

CO End of Life

OFF

OFF

Chirp every  

30-60 seconds

*Temp 4 pattern is repeated pattern of four short indications 

followed by a five second pause. 
When the unit has been in alarm for 30 minutes the alarm signal 

will be given once every minute.
If ambient conditions return to normal, the unit will self-restore 

out of alarm and into Normal (standby) mode.

Hush feature:

 If required, the audible alarm can be silenced for 

5 minutes by pushing the button marked “Test/Hush”. The red 

alarm light will continue to flash in temp-4 pattern. If carbon 

monoxide is still present after the 5 minute hush period, the 

audible alarm will sound. The hush facility will not operate at 

levels above 350 ppm (parts per million) carbon monoxide.

Trouble feature:

 When the sensor supervision is in a trouble 

condition (such as a sensor that has been tampered with), the 

alarm will sound a trouble signal every 30-60 seconds and the 

trouble contact will open . The alarm must then be replaced.

End of Life Timer feature:

 When the alarm has reached the end of 

its life, the trouble signal will sound  every 30-60 seconds and the 

trouble contact will open. This indicates that the CO sensor inside 

the alarm has passed the end of its life and must be replaced. 

This alarm’s lifespan is approximately ten years from the date of 

manufacture. Refer to Alarm Replacement on page 3.

Refer to Figure 4 for wiring of the alarm and trouble relays.

LIVING

ROOM

BEDROOM

BEDROOM

BEDROOM

KITCHEN

TO
BR

CLOSED

DOOR

BASEMENT

GARAGE

CARBON MONOXIDE ALARM
LOCATION FOR MULTI-LEVEL RESIDENCE

S0295-00

6581  Kitimat Rd., Unit #6, Mississauga, Ontario, L5N 3T5

1-800-SENSOR2, FAX: 905-812-0771

www.systemsensor.ca

I56-3247-006

  

I56-3247-006 

 

 10-28

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