Garmin GHP 20 Marine Autopilot System for Steer-by-Wire Installation Instructions Manual

Contents

Garmin GHP 20 Marine Autopilot System for Steer-by-Wire Installation Instructions Manual Manual pdf 8 page image

8 GHP 20 Installation InstructionsGHC 10 InstallationInstall the GHC 10 by flush-mounting it in the dashboard near the helm,and connecting it to a NMEA 2000 network.To use advanced features of the GHP 20, optional NMEA2000-compatible or NMEA 0183-compatible GPS devices, can beconnected to the NMEA 2000 network or connected to the GHC 10through NMEA 0183.Mounting the GHC 10NoticeThe temperature range for the GHC 10 is from 5°F to 158°F (from-15°C to 70°C). Extended exposure to temperatures outside of thisrange (in storage or operating conditions) may cause failure of theLCD screen or other components. This type of failure and relatedconsequences are not covered by the manufacturer’s limited warranty.If you are mounting the GHC 10 in fiberglass, when drilling thefour pilot holes, it is recommended to use a countersink bit to drill aclearance counterbore through only the top gel-coat layer. This willhelp to avoid any cracking in the gel-coat layer when the screws aretightened.Stainless-steel screws may bind when screwed into fiberglass andovertightened. Garmin recommends applying an anti-galling, stainlessanti-seize lubricant to the screws before installing them.Before you can mount the GHC 10, you must select a mounting location(page 5).1. Trim the flush-mount template and ensure it will fit in the locationwhere you plan to mount the GHC 10.The flush-mount template is included in the product box, not inthese instructions.The flush-mount template has adhesive on the back.2. Remove the protective liner from the adhesive on the back of thetemplate and apply it to the location where you plan to mount theGHC 10.3. If you will be cutting the hole with a jigsaw instead of a 317 /32 in. (90mm) hole saw, use a 3/8 in. (10 mm) drill bit to drill a pilot hole asindicated on the template to begin cutting the mounting surface.4. Using the jigsaw or the 3.5 in. (90 mm) hole saw, cut the mountingsurface along the inside of the dashed line indicated on the flush-mount template.5. If necessary, use a file and sandpaper to refine the size of the hole.6. Place the GHC 10 into the cutout to confirm that the four mountingholes are correct.7. Select an option:• If the mounting holes are correct, proceed to step 8.• If the mounting holes are not correct, mark the correct locationsof the four mounting holes.8. Remove the GHC 10 from the cutout.9. Drill the four 1 /8 in. (3.2 mm) pilot holes.If you are mounting the GHC 10 in fiberglass, use a countersink bitas advised in the Notice.10. Remove the remainder of the template.11. Place the GHC 10 into the cutout.12. Securely fasten the GHC 10 to the mounting surface using thesupplied screws.If you are mounting the GHC 10 in fiberglass, use a anti-gallinglubricant as advised in the Notice.13. Snap the mounting covers ➊ into place.➊Connecting the GHC 10Connect the GHC 10 to the NMEA 2000 network using the includedNMEA 2000 drop cable (page 8).Multiple GHC 10 ConsiderationsYou can install multiple GHC 10 devices (sold separately) to control theautopilot from different locations on the boat.• All additional GHC 10 devices must be at software version 4.0 orlater.• All additional GHC 10 devices must be connected to theNMEA 2000 network (page 8).Connecting the Devices to a nMEa 2000networkNoticeIf you have an existing NMEA 2000 network on your boat, it shouldalready be connected to power. Do not connect the included NMEA2000 power cable to an existing NMEA 2000 network, because onlyone power source should be connected to a NMEA 2000 network.You can connect the GHC 10 to the CCU through an existing NMEA2000 network. If you do not have an existing NMEA 2000 network onyour boat, all the parts needed to build one are supplied in the GHP 20package (page 10).To use advanced features of the GHP 20, an optional NMEA2000-compatible GPS device can be connected to the NMEA 2000network.For more information on NMEA 2000, go to www.garmin.com.