Figure 4. wiring diagram, Single unit, single zone, 4 conductor cable, Multiple unit, single zone, 6 conductor cable – System Sensor CO1224 User Manual

Page 4

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D250-03-00

4

I56-2874-001

©2006 System Sensor

System Sensor warrants its enclosed product to be free from defects in

materials and workmanship under normal use and service for a period

of three years from date of manufacture. System Sensor makes no other

express warranty for the enclosed product. No agent, representative,

dealer, or employee of the Company has the authority to increase or alter

the obligations or limitations of this Warranty. The Company’s obliga-

tion of this Warranty shall be limited to the replacement of any part of

the product which is found to be defective in materials or workman-

ship under normal use and service during the three year period com-

mencing with the date of manufacture. After phoning System Sensor’s

toll free number 800-SENSOR2 (736-7672) for a Return Authorization

number, send defective units postage prepaid to: System Sensor, Returns

Department, RA #__________, 3825 Ohio Avenue, St. Charles, IL 60174.

Please include a note describing the malfunction and suspected cause

of failure. The Company shall not be obligated to replace units which

are found to be defective because of damage, unreasonable use, modi-

fications, or alterations occurring after the date of manufacture. In no

case shall the Company be liable for any consequential or incidental

damages for breach of this or any other Warranty, expressed or implied

whatsoever, even if the loss or damage is caused by the Company’s

negligence or fault. Some states do not allow the exclusion or limita-

tion of incidental or consequential damages, so the above limitation or

exclusion may not apply to you. This Warranty gives you specific legal

rights, and you may also have other rights which vary from state to state.

Three-Year Limited Warranty

FCC Statement

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device

must accept any interference received, including interference that may cause undesired operation.

NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to pro-

vide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed

and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a

particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user

is encouraged to try to correct the interference by one or more of the following measures:

– Reorient or relocate the receiving antenna.

– Increase the separation between the equipment and receiver.

– Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

– Consult the dealer or an experienced radio/TV technician for help.

Please refer to insert for the limitations of Carbon Monoxide Detectors

S0313-00

Figure 4. Wiring Diagram:

S0300-01

POSITIVE

NEGATIVE

TROUBLE

TROUBLE

NORMALLY
CLOSED

NORMALLY
OPEN

COMMON

}

POWER

}

TROUBLE
RELAY

ALARM
RELAY

Input powered (12 or 24 VDC) from UL Listed Fire/Burg Control Panel (Class 2).

NON-RESETTABLE PWR

CO ZONE

UL LISTED
PANEL

+

ALARM
INITIATION
CONTACTS

EOL RESISTOR
SPECIFIED BY PANEL
MANUFACTURER

C

NO

T

T

+ −

CLOSED WITH
POWER APPLIED
AND NO FAULT
DETECTED

SINGLE UNIT, SINGLE ZONE, 4 CONDUCTOR CABLE

NON-RESETTABLE PWR

CO ZONE

UL LISTED
PANEL

+

SUPERVISORY TROUBLE CONTACTS

ALARM
INITIATION
CONTACTS

ALARM
INITIATION
CONTACTS

FIRST CO1224

DETECTOR

IN LOOP

LAST CO1224

DETECTOR

IN LOOP

EOL RESISTOR
SPECIFIED BY PANEL
MANUFACTURER

C

NO

C

NO

T

T

T

T

+ −

+ −

CLOSED WITH
POWER APPLIED
AND NO FAULT
DETECTED

MULTIPLE UNIT, SINGLE ZONE, 6 CONDUCTOR CABLE

S0314-00

CAUTION

It should be noted the installation, operation, testing and mainte-
nance of the CO1224 is different than System Sensor conventional
4-wire smoke detectors, such as the i3 Series. Below are specific
installation requirements for the CO1224:

* Connect to a non-resettable power supply
* Connect to a non-fire zone: Per NFPA 720 section 5.3.7.2 the CO1224

shall not be connected to a zone that signals a fire condition

* Per NFPA 720 section 5.3.7, do not connect the CO1224 on a zone with

other fire or intrusion initiating devices - i.e. do not connect on the
same zone as smoke detectors

* Wiring of the trouble relay is mandatory: Per UL Standard 2075 section

17.1.1 a detector shall send a trouble signal to the control panel upon
an open circuit, a ground fault, sensor removal or sensor end of life

* If wiring one CO1224 per zone: Use 4 conductors
* If wiring multiple CO1224 detectors per zone: Use 4 conductors from

panel to first CO1224, then use 6 conductors from the second CO1224
to other detectors on the zone

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