Garmin GCV 20 GCV 20 Installation Instructions - Page 1

GCV™ 20 INSTALLATION INSTRUCTIONS Installation Instructions Important Safety Information WARNING See the Important Safety and Product Information guide in the product box for product warnings and other important information. You are responsible for the safe and prudent operation of your vessel. Sonar is a tool that enhances your awareness of the water beneath your boat. It does not relieve you of the responsibility of observing the water around your boat as you navigate. CAUTION Failure to install and maintain this equipment in accordance with these instructions could result in damage or injury. Always wear safety goggles, ear protection, and a dust mask when drilling, cutting, or sanding. NOTICE When drilling or cutting, always check what is on the opposite side of the surface. Registering Your Device Help us better support you by completing our online registration today. Keep the original sales receipt, or a photocopy, in a safe place. 1 Go to my.garmin.com/registration. 2 Sign in to your Garmin® account. Tools Needed • Drill and drill bits • #2 Phillips screwdriver • Cable ties (optional) • Marine sealant (optional) Mounting Location Considerations • The sounder must be mounted in a location where it cannot be submerged. • The sounder must be mounted in a location with adequate ventilation where it will not be exposed to extreme temperatures. • The sounder should be mounted so that the LEDs are visible. • The sounder should be mounted so that the power and network cables can be easily connected. • The sounder should be mounted so that the transducer cable can be connected. If required, transducer extension cables are available through your Garmin dealer. Installation Preparation NOTICE This device must be installed according to these instructions to get the best possible performance. If you experience difficulty with the installation, contact Garmin Product Support. Because every boat is different, you must carefully plan the GCV 20 sounder installation. 1 Select a mounting location. 2 Mount the sounder. 3 Connect the sounder to the Garmin Marine Network and to power. 4 Connect the sounder to the transducer. Mounting the Device NOTICE If you are mounting the bracket on fiberglass with screws, it is recommended to use a countersink bit to drill a clearance counterbore through only the top gel-coat layer. This will help to avoid cracking in the gel-coat layer when the screws are tightened. Stainless-steel screws may bind when screwed into fiberglass and overtightened. It is recommended to apply an anti-seize lubricant on the screws before installing them. Before you mount the device, you must select a mounting location and determine the mounting hardware needed for the surface. NOTE: Mounting hardware is included with the device, but it may not be suitable for the mounting surface. 1 Place the device in the mounting location and mark the location of the pilot holes. 2 Drill the appropriate pilot hole for one corner of the device. 3 Loosely fasten the device to the mounting surface with one corner and examine the other three pilot-hole marks. 4 Mark new pilot-hole locations if necessary, and remove the device from the mounting surface. 5 Drill the appropriate pilot holes for the other three marks. 6 Secure the device to the mounting location. Connecting the Sounder WARNING When connecting the power cable, do not remove the in-line fuse holder. To prevent the possibility of injury or product damage caused by fire or overheating, the appropriate fuse must be in place as indicated in the product specifications. In addition, connecting the power cable without the appropriate fuse in place voids the product warranty. NOTICE Do not force a cable into its port. Forcing the cable can damage the pins. If the cable is properly aligned, the cable should connect easily. Before you connect the sounder to the network, power, and the transducer, you must mount the sounder (Mounting the Device, page 1). 1 Route the cables using the appropriate tie wraps, fasteners, and sealant to secure the cables along the route and through any bulkheads or the deck. 2 Install the locking rings on the marine network and power cablesxxx. 3 Connect the bare-wire end of the power cable to a 12 Vdc power source and to ground. 4 Align the notch on the end of the power cable with the power port on the device, and press the cable into place. 5 Tighten the locking ring. 6 Select an option: • If your boat is equipped with a GMS™ 10 network port expander, connect the network cable to an available port on the GMS 10. February 2018 190-02408-02_0A