The System Sensor CO1224TR is a wired Carbon Monoxide gas detector. It is meant to be connected to an alarm system. The electrochemical sensing technology is fully UL compliant, meeting the standards of UL2075. For longer wire runs, we recommend using 18 gauge 4 conductor cabling. This is a suggestion, rather than a requirement. Smaller gauge wire can be used.
The System Sensor CO1224TR is similar to the System Sensor CO1224T. Both have the same electrical specifications but the CO1224TR is a 6" round sensor. The CO1224T is rectangular. Both, the CO1224TR and the CO1224T have a 10-year end-of-life timer. A trouble alert will be sent to the panel when the detector reaches its end-of-life. Whether you choose the round or the rectangular version is based strictly on aesthetics.
The power provided to the CO1224TR must be either 12 or 24VDC. This can be accomplished by wiring the detector to the auxiliary power output from the alarm control panel, or by setting up an auxiliary power supply. When idle, the CO1224TR draws 20mA of current. If the detector senses CO gas it will activate. During an alarm, it will draw 40mA of current. The additional current is used to power the local 85 dB sounder and the LED. If you have the CO1224TR connected to your panel's auxiliary power terminals, be sure to calculate 40mA as the maximum current draw for each of these devices.
The zone wiring connections can be connected to any open zone terminals on a control panel that supports hardwired zones, such as a VISTA-20P. On the VISTA-20P, any CO detection zone should be programmed as Zone Type 14 - Carbon Monoxide. Since the CO1224TR is normally open (NO), you will want to connect the resistor in parallel across the terminals at the detector for end-of-line supervision. This will supervise the wire connections from the CO detector back to the alarm panel. If multiple CO1224TR detectors are wired to a single zone, then the resistor should be placed in parallel at the final detector in the circuit.
The CO1224TR also has two (2) trouble terminals. The use of the trouble circuit is required by code and also strongly encouraged for any installation. When the detector senses an internal issue, such as loss of power, or it has reached its end of life, the trouble circuit opens. This will alert the panel that there is an issue, so that the issue can be resolved and the CO1224TR and the system can continue to provide continued CO detection. The trouble circuit can be wired to its own zone or wired in series with the alarm terminals using the same zone as the CO alarm.
We recommend using the "Real Test" patented technology which supports testing measures with canned CO. When tripped the CO detector will produce a local 85 dB temporal 4 sound and the LED will begin flashing. If the zone is properly wired and programmed it will also produce an alarm event on the system. If central station monitoring is being used, a report will be sent to the monitoring station. Carbon monoxide gas can be deadly, and it is undetectable without specialized equipment. When a CO alarm is indicated, everyone should leave the premises and wait for the fire department to determine when it is safe to return.
Please note: CO alarms require Fire Department dispatching, the only exception being when the system is placed on test before the alarm occurs. Even if you provide the proper false alarm password, the monitoring station is required to dispatch when a carbon monoxide alarm is received under normal conditions. Before testing, always remember to place your security system on test mode with the monitoring station if you are enrolled in central station monitoring.
- Device Type: Carbon Monoxide Sensor
- CO Detection: Electrochemical
- Voltage: 12/24 VDC
- Current: 20mA standby/ 40mA alarm / 75mA test
- Sounder: 85 dB, Temporal-4
- Dimensions: 6" diameter x 1.3" H (152mm diameter x 33mm H)
- Tamper Detection: Yes
- Wire Gauge: Accepts 14-22 AWG
- Mounting Options: Single-gang back box or surface mount to wall or ceiling
- Sensor Life: ~10 Years
- Alarm Relay: Form B (Normally Open)
- Trouble Relay: Form A (Normally Closed)
- Operating Temperature: 32°F to 104°F (0°C - 40°C)
- Operating Humidity: 22% to 90% (Relative)