Garmin Edge® 520 Bundle Owner's Manual

See the Important Safety and Product Information guide in the 

product box for product warnings and other important 

information.

You should wear the heart rate monitor directly on your skin, just 

below your sternum. It should be snug enough to stay in place 

during your activity.

Snap the heart rate monitor module 

À

 onto the strap.

The Garmin

®

 logos (on the module and the strap) should be 

right-side up.

Wet the electrodes 

Á

 and the contact patches 

Â

 on the back 

of the strap to create a strong connection between your chest 

and the transmitter.

Wear the heart rate monitor with the Garmin logos facing 

right-side up.

The hook 

Ã

 and loop 

Ä

 connection should be on your right 

side.

Wrap the strap around your chest, and connect the strap 

hook to the loop.
NOTE: Make sure the care tag does not fold over.

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

data.

Before you can pair the heart rate monitor with your device, you 

must put on the heart rate monitor.
Pairing is the connecting of ANT+

®

 wireless sensors, like your 

heart rate monitor, with a Garmin ANT+ compatible device.
NOTE: The pairing instructions differ for each Garmin 

compatible device. See your owner's manual.
• For most Garmin compatible devices, bring the device within 

3 m of the heart rate monitor and use the device menu to pair 

manually.

• For some Garmin compatible devices, bring the device within 

1 cm of the heart rate monitor to pair automatically.
TIP: Stay 10 m away from other ANT+ sensors while pairing.

After you pair the first time, your Garmin compatible device 

automatically recognizes the heart rate monitor each time it is 

activated.

If the heart rate data is erratic or does not appear, you can try 

these tips.
• Reapply water to the electrodes and contact patches.
• Tighten the strap on your chest.
• Warm up for 5–10 minutes.
• Follow the care instructions (

).

• Wear a cotton shirt or thoroughly wet both sides of the strap.

Synthetic fabrics that rub or flap against the heart rate 

monitor can create static electricity that interferes with heart 

rate signals.

• Move away from sources that can interfere with your heart 

rate monitor.
Sources of interference may include strong electromagnetic 

fields, some 2.4 GHz wireless sensors, high-voltage power 

lines, electric motors, ovens, microwave ovens, 2.4 GHz 

cordless phones, and wireless LAN access points.

You must unsnap and remove the module before washing the 

strap.
A build up of sweat and salt on the strap can decrease the 

ability of the heart rate monitor to report accurate data.

• Go to 

 for detailed washing 

instructions.

• Rinse the strap after every use.
• Machine wash the strap after every seven uses.
• Do not put the strap in a dryer.
• When drying the strap, hang it up or lay it flat.
• To prolong the life of your heart rate monitor, unsnap the 

module when not in use.

ANT+ technology links your heart rate monitor to fitness 

equipment so you can view your heart rate on the equipment 

console.
• Look for the ANT+LINK HERE logo on compatible fitness 

equipment.

• Go to 

 for more linking instructions.

Use a small Phillips screwdriver to remove the four screws 

on the back of the module.

Remove the cover and battery.

Wait 30 seconds.

2