Garmin Edge® 20 Owner's Manual

The Garmin

®

 logo should be right-side up.

Bring the device within 3 m (10 ft.) of the heart rate monitor.

After you put on the heart rate monitor, it is active and sending 

data.

NOTE: If you do not have this sensor, you can skip this task.
TIP: Garmin recommends you secure your bike on a stand while 

installing the sensor.

Select the band size that fits your crank arm 

À

 securely.

The band you select should be the smallest one that 

stretches across the crank arm.

On the non-drive side, place and hold the flat side of the 

cadence sensor on the inside of the crank arm.

Pull the bands 

Á

 around the crank arm, and attach them to 

the hooks 

Â

 on the sensor.

Rotate the crank arm to check for clearance.
The sensor and bands should not contact any part of your 

bike or shoe.
NOTE: The LED flashes green for five seconds to indicate 

activity after two revolutions.

Take a 15 minute test ride and inspect the sensor and bands 

to ensure there is no evidence of damage.

The first time you connect an ANT+ sensor to your device, you 

must pair the device and sensor. After the initial pairing, the 

device automatically connects to the sensor when you start your 

activity and the sensor is active and within range.
NOTE: If your Edge 25 device was packaged with an ANT+ 

sensor, they are already paired.

Install the sensor or put on the heart rate monitor.

Select   > Settings > Connect Sensors.

Bring the device within 1 cm of the sensor, and wait while the 

device connects to the sensor.
When the device detects the sensor, a message appears.

The device uses your user profile information from the initial 

setup to estimate your maximum heart rate and determine your 

default heart rate zones. For the most accurate calorie data 

during your activity, you should set your maximum heart rate (if 

known).

Select   > Settings > User Profile > Max. HR.

Enter your maximum heart rate.

Many athletes use heart rate zones to measure and increase 

their cardiovascular strength and improve their level of fitness. A 

heart rate zone is a set range of heartbeats per minute. The five 

commonly accepted heart rate zones are numbered from 1 to 5 

according to increasing intensity. Generally, heart rate zones are 

calculated based on percentages of your maximum heart rate.

Knowing your heart rate zones can help you measure and 

improve your fitness by understanding and applying these 

principles.
• Your heart rate is a good measure of exercise intensity.
• Training in certain heart rate zones can help you improve 

cardiovascular capacity and strength.

• Knowing your heart rate zones can prevent you from 

overtraining and can decrease your risk of injury.

If you know your maximum heart rate, you can use the table 

heart rate zone for your fitness objectives.
If you do not know your maximum heart rate, use one of the 

calculators available on the Internet. Some gyms and health 

centers can provide a test that measures maximum heart rate. 

The default maximum heart rate is 220 minus your age.

If you have an optional heart rate monitor, you can set the 

device to alert you when your heart rate is above or below a 

target zone or a custom range. For example, you can set the 

device to alert you when your heart rate is below 150 beats per 

minute (bpm).

Select   > Ride Options > HR Alert.

Select an option:
• To use the range of an existing heart rate zone, select a 

heart rate zone.

• To customize the maximum value, select Custom > High 

> Turn On, and enter a value.

• To customize the minimum value, select Custom > Low > 

Turn On, and enter a value.

Each time you exceed or drop below the specified range or 

custom value, a message appears. The device also beeps if 

audible tones are turned on (

).

You can update your gender, birth year, height, weight, and 

maximum heart rate (

) settings. The device uses this information to calculate 

accurate training data.

Select   > Settings > User Profile.

Select an option.

Select   > Settings > System.
Language: Sets the language displayed on the device.
Time: Sets the time settings (

).

Tones: Turns audible tones on or off. You can set tones for keys 

and alert messages.

Units: Sets the units of measure used on the device.

Customizing Your Device

5