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Kidde KF20 - Replacement For Kidde KF10 Mains Powered Smoke Alarms

Kidde KF20 - Replacement For Kidde KF10 Mains Powered Smoke Alarms

The Kidde KF20 is a 230V mains powered smoke alarm with a 9V alkaline battery backup. It serves as...

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Product Information

Full details

This guide is for homeowners and installers using the Kidde KF20 smoke alarm, designed to replace older Kidde models. The KF20 provides reliable smoke detection with battery backup, ensuring continuous protection even during power outages. Note that while it replaces many models, some require professional electrical work for interlinking. This guide provides essential information for setup, use, and maintenance.

All features

Model Part NumberKF20
BrandKIDDE

Extended Product Information

FAQs

How do I test the smoke alarm?

Press and hold the Test/Hush button on the smoke alarm. The alarm should sound.

How often should I test the smoke alarm?

Test the smoke alarm monthly.

How do I silence a false alarm?

Press the Test/Hush button to silence the alarm. The alarm will typically be silenced for a few minutes.

What kind of battery does the KF20 use?

The KF20 uses a 9V alkaline battery for backup power.

How often should I replace the battery?

Replace the battery annually or when the low battery warning chirps.

What is the warranty period?

The KF20 comes with a six-year manufacturer's warranty.

Can I install the KF20 myself?

Yes, if you are replacing a compatible model and are comfortable with electrical work. However, some models require professional installation.

What standards does the Kidde KF20 meet?

The Kidde KF20 is CE and Kitemarked to BS EN 14604:2005 standards and complies with 2022 Scottish legislation.

Troubleshooting

Alarm is chirping.

Replace the 9V battery or silence the low battery warning for 8 hours by pressing the Test/Hush button.

Alarm is sounding without smoke.

Press the Test/Hush button to silence the alarm. Check for smoke or other triggers. If the issue persists, the unit may be faulty and need replacing.

Alarm does not sound during testing.

Check the power supply and wiring. Ensure the battery is correctly installed. If problems persist, replace the alarm.

Interlinked alarms are not working.

Verify the interlink wiring is correct and compatible with the KF20. Check that all alarms are powered and functioning.

Pros and Cons

Pros

  • Easy direct replacement for multiple Kidde models.
  • Provides continuous protection with battery backup.
  • Compliant with current safety standards.
  • Features a hush button to silence nuisance alarms.
  • Comes with a long-term warranty.
  • Easy to install with included fixings.

Cons

  • Requires professional electrical work for interlinking with specific models (123i / 1239HI, 1275H, KF1R, KF10R).
  • Battery replacement is required.
  • May require adjustment to existing wiring during installation if replacing older models.

Setup, Compatibility & Care

Setup

  1. Preparation: Turn off the power at the circuit breaker before beginning installation.
  2. Removal: Remove the old smoke alarm and disconnect any wiring.
  3. Mounting: Use the included fixings to mount the KF20 in the same location.
  4. Wiring: Connect the wires according to the instructions provided. Ensure correct polarity.
  5. Battery Installation: Insert a fresh 9V alkaline battery.
  6. Power On: Restore power at the circuit breaker.
  7. Test: Press the Test/Hush button to ensure the alarm sounds.

Compatibility

The Kidde KF20 is compatible with the following models: KF1, 4870, 4881, 1240C, and IAR230C. It can be electrically interlinked with many older Kidde models. However, the 123i / 1239HI, 1275H, KF1R, and KF10R models require professional electrical installation.

Care

  • Testing: Test the alarm monthly by pressing the Test/Hush button.
  • Cleaning: Vacuum the smoke alarm gently every six months to remove dust and debris. Do not use cleaning solvents or water.
  • Battery Replacement: Replace the 9V battery annually, or when the low battery warning sounds.

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