Garmin GMR 18 HD3 Installation Instructions

Garmin GMR 18 HD3 Manual

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  • Garmin GMR 18 HD3 | Installation Instructions - Page 1
    a Garmin® authorized service technician. Any damage resulting from opening the unit by anyone other than a Garmin authorized service technician will not be device. For instructions on updating the software, see your chartplotter owner's manual at support.garmin.com. June 2023 GUID-0436BE40-091E-
  • Garmin GMR 18 HD3 | Installation Instructions - Page 2
    Tools Needed • Drill • 9.5 mm (3/8 in.) drill bit • 32 mm (1 1/4 in.) drill bit (optional) • 4 mm (5/32 in.) hex wrench • 13 mm (1/2 in.) wrench and torque wrench • Marine sealant 2
  • Garmin GMR 18 HD3 | Installation Instructions - Page 3
    , page 5). • The radar should be mounted on a flat surface or a platform that is parallel to the vessel's water line and is sturdy enough to support the radar's weight. The weight for each model is listed in the product specifications. • The radar must be mounted in a location where it can be
  • Garmin GMR 18 HD3 | Installation Instructions - Page 4
    • The radar should be mounted away from heat sources such as smoke stacks and lights. • The radar should be mounted at a different level than horizontal spreaders and mast crosstrees. • To avoid interference with a magnetic compass, the radar should not be mounted closer to a compass than the
  • Garmin GMR 18 HD3 | Installation Instructions - Page 5
    Roof Mounting Considerations NOTICE If you are mounting the radar on a roof or hard top of your boat, you may need to raise the installation height using a pedestal or other suitable structure to avoid a negative impact on performance. Mounting the radar directly on a hard top could cause the
  • Garmin GMR 18 HD3 | Installation Instructions - Page 6
    Determining the Radar Mounting Height NOTICE If you plan to install the radar on a roof or hard top, you should install it high enough to avoid interference from the surface. 1 Based on the shape of the roof, complete an action: • Measure the distance from the intended mounting location to the
  • Garmin GMR 18 HD3 | Installation Instructions - Page 7
    .) mounting holes. 2 Connect the power cable to the power port and the network cable to the network port . 3 Press the cables into any of the guide grooves on the bottom of the case, and secure them using a cable hold-down plate . The cables should be bent or twisted as little as
  • Garmin GMR 18 HD3 | Installation Instructions - Page 8
    8 Fasten the radome to the mounting surface using the threaded rods , flat washers , spring washers , and hex nuts . 9 Using a torque wrench, tighten the nuts to 13.7 to 18.6 N-m (10 to 14 lbf-ft.). Wiring and Connection Considerations It may be necessary to drill 32 mm (11/4 in.) holes for routing
  • Garmin GMR 18 HD3 | Installation Instructions - Page 9
    of this radar are controlled with your Garmin chartplotter. See the Radar section of your chartplotter's owner's manual for operating instructions. To download the latest manual, go to support.garmin .com/manuals. If you have more than one radar on your boat, you must be viewing the radar screen
  • Garmin GMR 18 HD3 | Installation Instructions - Page 10
    Extensions section of these instructions to make sure the can help troubleshoot installation problems. Status support for assis­ tance. Contacting Garmin Support • Go to support.garmin.com for help and information, such as product manuals, frequently asked questions, videos, and customer support
  • Garmin GMR 18 HD3 | Installation Instructions - Page 11
    Specifications Specification Weight Temperature range Case material Water rating Power output Maximum antenna rotation speed Beam width Maximum range Minimum range Input voltage Fuse Power consumption (typical) Compass-safe distance Measurement GMR 18 HD3 and GMR 18 xHD3: 7 kg (15.4 lb.) GMR 24
  • Garmin GMR 18 HD3 | Installation Instructions - Page 12
    Detailed Dimensions Item Length (width) (height) GMR 18/24 xHD3 508.2 mm (20 in.) 504.7 mm (19 7/8 in.) 248.3 mm (9 ¾ in.) GMR 24 xHD3 645.4 mm (25 7/16 in.) 642.5 mm (25 5/16 in.) 250.3 mm (9 7/8 in.) 12
  • Garmin GMR 18 HD3 | Installation Instructions - Page 13
    Item GMR 18/24 xHD3 233 mm (9 3/16 in.) 176.7 mm (6 15/16 in.) GMR 24 xHD3 233 mm (9 3/16 in.) 245.4 mm (9 11/16 in.) 141.5 mm (5 9/16 in.) 141.5 mm (5 9/16 in.) 190 mm (7 ½ in.) 139.2 mm (5 ½ in.) 258.5 mm (10 3/16 in.) 207.7 mm (8 3/16 in.) 141.5 mm (5 9/16 in.) 227.5 mm (8 15/16 in.) 141
  • Garmin GMR 18 HD3 | Installation Instructions - Page 14
    are registered trademarks of the National Marine Electronics Association. M/N: A04676 / B04676 / C04676 IC: 1792A-04676 / 1792A-04676 / 1792A-04676 © 2023 Garmin Ltd. or its subsidiaries support.garmin.com
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GMR
™
 
18
 HD3 AND
18/24
XHD3
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.
Failure to install this device according to these instructions could result in personal injury, damage to the vessel
or device, or poor product performance.
The radar transmits electromagnetic energy. To avoid possible personal injury, damage to the vessel or device,
or poor product performance, ensure that the radar is installed according to the recommendations in these
instructions and that all personnel are clear of the path of the radar beam before transmitting. When properly
installed and operated, the use of this radar conforms to the requirements of ANSI/IEEE C95.1-1992 Standard
for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields.
To avoid possible personal injury, do not look directly at the antenna at close range when the radar is
transmitting. Eyes are the most sensitive part of the body to electromagnetic energy.
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. Connecting the power cable without the appropriate fuse in place voids the product warranty.
CAUTION
For the best possible performance and to avoid potential injury, damage to the device, or damage to your vessel,
installation by a qualified marine installer is recommended.
Opening the device may result in personal injury and/or damage to the device. This device contains no user-
serviceable parts, and should be opened only by a Garmin
®
authorized service technician. Any damage resulting
from opening the unit by anyone other than a Garmin authorized service technician will not be covered by the
Garmin warranty.
This device should be used only as a navigational aid. Using the device for any purpose requiring precise
measurement or direction, distance, location, or topography may result in personal injury or damage to the
vessel.
To avoid possible personal 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 to avoid damaging the vessel.
Software
Update
You must update the Garmin chartplotter software when you install this device. For instructions on updating the
software, see your chartplotter owner's manual at
support.garmin.com
.
GUID-0436BE40-091E-49FE-9005-E50CFCABE751 v1
June 2023