First Alert CO410 Carbon Monoxide Detector Alarm User Manual

1. Introduction

The First Alert CO410 Carbon Monoxide Alarm is designed to detect carbon monoxide (CO) gas, a colorless, odorless, and tasteless gas that can be deadly. This battery-operated unit provides continuous monitoring of CO levels, even during power outages, and features a backlit digital display for easy viewing of current and peak CO concentrations. An 85-decibel alarm sounds when CO levels reach dangerous thresholds. The device includes an EZ access battery door for convenient battery changes and an optional wall mount for flexible placement.

Figure 2: First Alert CO410 Carbon Monoxide Detector with Digital Display.

2. Important Safety Information

Carbon monoxide (CO) is a highly toxic gas produced by the incomplete combustion of fuels. It is impossible to detect with human senses. CO alarms are crucial for early warning of CO presence. This device is intended to detect carbon monoxide gas from any source of combustion. It is not designed to detect smoke or fire.

Sources of Carbon Monoxide:

• Unvented gas or kerosene heaters
• Leaking chimneys or furnaces
• Gas ranges, water heaters, clothes dryers
• Portable generators
• Fireplaces, wood-burning stoves
• Automobiles running in an attached garage

Figure 3: Common household sources of carbon monoxide.

Symptoms of Carbon Monoxide Poisoning:

Symptoms of CO poisoning are often mistaken for the flu and include headache, dizziness, nausea, vomiting, and fatigue. Prolonged exposure can lead to collapse, unconsciousness, and death. If you suspect CO poisoning, seek fresh air immediately and call emergency services.

3. Setup

3.1. Battery Installation

1. Open the EZ access battery door located on the front of the unit.
2. Insert two (2) AA batteries, ensuring correct polarity (+ and -).
3. Close the battery door securely.
4. The unit will perform a self-test and indicate readiness.

Figure 4: The battery compartment of the CO410, designed for easy access.

3.2. Mounting the Unit

The CO410 can be placed on a flat surface or wall-mounted. For wall mounting:

1. Choose an appropriate location (refer to "Placement Guidelines" section).
2. Use the provided screws and anchors to secure the mounting bracket to the wall.
3. Align the back of the CO410 unit with the mounting bracket and twist clockwise until it locks into place.

Figure 5: Rear view of the CO410, illustrating the mounting holes for wall installation.

4. Operating Instructions

4.1. Digital Display

The backlit digital display shows the current carbon monoxide concentration in parts per million (PPM). In normal operation, it may show "0 PPM" or a low background level. The display will illuminate when a button is pressed or during an alarm event.

4.2. Test/Silence Button

Press and hold the TEST/SILENCE button to test the alarm's functionality. The alarm will sound a loud 85-decibel horn, and the display will show a test pattern. Release the button to stop the test. This button can also silence a non-threatening alarm or a low battery warning chirp.

4.3. Peak Level Memory

Press the PEAK LEVEL button to view the highest CO concentration detected by the alarm since its last reset or power-up. This feature is useful for monitoring potential intermittent CO issues. The peak level will be displayed in PPM.

5. Maintenance

5.1. Regular Testing

Test your CO alarm weekly by pressing the TEST/SILENCE button. This ensures the unit is functioning correctly. If the alarm does not sound during the test, replace the unit immediately.

Figure 6: Regularly testing your carbon monoxide alarm is essential for safety.

5.2. Battery Replacement

The CO410 uses two (2) AA batteries. When the batteries are low, the unit will chirp periodically and display a low battery indicator. Replace batteries promptly to ensure continuous protection. Use only recommended alkaline batteries.

5.3. End-of-Life Warning

The CO410 has a 7-year limited warranty and is designed to last approximately 7 years. After this period, the unit will emit an end-of-life signal chirp, indicating it's time to replace the entire alarm for continued safety.

Figure 7: Replace carbon monoxide alarms at least every 7 years.

6. Placement Guidelines

For optimal protection, install carbon monoxide alarms on every level of your home and in each sleeping area. Consider placing additional alarms near potential CO sources like furnaces, water heaters, and attached garages.

Figure 8: Recommended placement of CO alarms on each level and in bedrooms.

Figure 9: Install alarms on every level and in every bedroom for comprehensive coverage.

7. What to Do in Case of an Alarm

If the carbon monoxide alarm sounds:

1. Immediately move to fresh air outdoors or open all doors and windows.
2. Do a head count to check that all persons are accounted for.
3. Do not re-enter the premises until the building has been aired out and the alarm remains in its normal condition.
4. Call your emergency services (Fire Department or 911).
5. Call a qualified appliance technician to investigate the source of CO from fuel-burning equipment and appliances, and inspect for proper operation of this equipment.

8. Troubleshooting

• Alarm Chirps Periodically: This usually indicates a low battery. Replace the batteries immediately.
• Alarm Does Not Sound During Test: Ensure batteries are correctly installed and fresh. If the issue persists, the unit may be faulty and requires replacement.
• Erratic Readings: Ensure the alarm is not placed near vents, windows, or in areas with high humidity or extreme temperatures, which can affect sensor performance.
• Alarm Sounds Without Apparent CO: Evacuate the premises and call emergency services. Even low levels of CO can be dangerous.

9. Specifications

Figure 10: Dimensions of the First Alert CO410 Carbon Monoxide Detector.

10. Warranty & Support

The First Alert CO410 Carbon Monoxide Detector Alarm comes with a 7-year limited warranty. For warranty claims or technical support, please refer to the contact information provided in the packaging or visit the official First Alert website.