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GHP

 Reactor 

Mechanical 

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. The autopilot is a tool that enhances your capability to 

operate your boat. It does not relieve you of the responsibility of 

safely operating your boat. Avoid navigational hazards and 

never leave the helm unattended.
Always be prepared to promptly regain manual control of your 

boat.
Learn to operate the autopilot on calm and hazard-free open 

water.
Use caution when operating the autopilot near hazards in the 

water, such as docks, pilings, and other boats.

 CAUTION

When in use, beware of hot motor and solenoid components 

and the risk of entrapment from moving parts.
Failure to install and maintain this equipment in accordance with 

these instructions could result in damage or injury.

NOTICE

To avoid damage to your boat, the autopilot system should be 

installed by a qualified marine installer. Specific knowledge of 

hydraulic steering componentry and marine electrical systems is 

required for proper installation.

Installation Preparation

The autopilot system consists of multiple components. You 

should familiarize yourself with all of the component mounting 

and connection considerations before beginning installation. You 

must know how the components operate together in order to 

correctly plan the installation on your boat.
You can consult the layout diagrams (

Power and Data Layout

to help understand the mounting and connection considerations.
You should lay out all of the components on the boat as you 

plan the installation to make sure your cables will reach each 

component. If needed, extension cables (sold separately) for 

various components are available from your Garmin

®

 dealer or 

from 

www.garmin.com

.

You should record the serial number of each component for 

registration and warranty purposes.

Tools Needed

• Safety glasses
• Drill and drill bits
• 90 mm (3.5 in.) hole saw or a rotary cutting tool
• Wire cutters/strippers
• Phillips and flat screwdrivers
• Cable ties
• Waterproof wire connectors (wire nuts) or heat-shrink tubing 

and a heat gun

• Marine sealant
• Portable or handheld compass (to test for magnetic 

interference)

• Anti-seize lubricant (optional)

NOTE: 

Mounting screws are provided for the main components 

of the autopilot system. If the provided screws are not 

appropriate for the mounting surface, you must provide the 

correct types of screws.

Mounting and Connection Considerations

The autopilot components connect to each other and to power 

using the included cables. Ensure that the correct cables reach 

each component and that each component is in an acceptable 

location before mounting or wiring any components.

Helm Control Mounting Considerations

NOTICE

This device should be mounted in a location that is not exposed 

to extreme temperatures or conditions. The temperature range 

for this device is listed in the product specifications. Extended 

exposure to temperatures exceeding the specified temperature 

range, in storage or operating conditions, may cause device 

failure. Extreme-temperature-induced damage and related 

consequences are not covered by the warranty.
The mounting surface must be flat to avoid damaging the device 

when it is mounted.

Using the included hardware and template, you can flush mount 

the device in the dashboard. If you want to mount the device 

using an alternative method where it appears flat with the front 

of the dashboard, you must purchase a flat-mount kit 

(professional installation recommended) from your Garmin 

dealer.
When selecting a mounting location, observe these 

considerations.
• The mounting location should be at or below eye level to 

provide optimal viewing as you operate your vessel.

• The mounting location should allow easy access to the keys 

on the device.

• The mounting surface must be strong enough to support the 

weight of the device and protect it from excessive vibration or 

shock.

• To avoid interference with a magnetic compass, the device 

should not be installed closer to a compass than the 

compass-safe distance value listed in the product 

specifications.

• The area behind the mounting surface must allow room for 

the routing and connection of the cables.

Helm Control Connection Considerations

• The helm control must connect to the NMEA 2000

®

 network.

• Optional NMEA

®

 0183 devices, such as wind sensors, water-

speed sensors, or GPS devices can be connected to the 

helm control using a data cable (

NMEA 0183 Connection 

Considerations

).

December 2014

Printed in Taiwan

190-01769-02_0A

Summary of Contents for GHP Reactor Mechanical

Page 1: ...bing and a heat gun Marine sealant Portable or handheld compass to test for magnetic interference Anti seize lubricant optional NOTE Mounting screws are provided for the main components of the autopilot system If the provided screws are not appropriate for the mounting surface you must provide the correct types of screws Mounting and Connection Considerations The autopilot components connect to ea...

Page 2: ...ive unit cannot be extended The ECU must be mounted in a location where it will not be submerged or exposed to wash down The ECU power cable connects to the boat battery and it can be extended if needed Power Cable Extensions Drive Unit Mounting and Wiring Considerations If a compatible drive unit is not already installed on your boat the drive unit is sold separately and must be installed by an e...

Page 3: ...oid Drive Unit If you are using the autopilot with a drive unit not sold by Garmin or a solenoid drive unit you must also install a Garmin rudder feedback sensor recommended or connect to an existing rudder feedback sensor using a rudder feedback cable sold separately Drive Unit Installation Alarm The alarm provides audible alerts from the autopilot system and should be installed near the helm con...

Page 4: ...ol into the cutout 13Securely fasten the helm control to the mounting surface using the supplied screws If you are mounting the helm control in fiberglass you should use an anti seize lubricant as advised in the notice 14Snap the decorative bezel À into place Mounting the CCU 1 Determine the mounting location 2 Using the CCU as a template mark the two pilot hole locations on the mounting surface 3...

Page 5: ...ade Connecting to an Existing Drive Unit You must install a drive unit power cable to use a drive unit not sold by Garmin with the GHP Reactor Mechanical autopilot This cable is sold separately These instructions do not apply to a solenoid type drive unit Connecting to a Solenoid Drive Unit 1 If necessary use the installation instructions provided with the drive unit to install it on your boat 2 I...

Page 6: ...eedback cable not included to your drive unit based on the wire colors and functions in the table If necessary the cable can be extended using 22 AWG 0 33 mm2 wire Wire Color Function Red Rudder feedback positive Black Rudder feedback negative Yellow Rudder feedback wiper 5 Connect the rudder feedback cable to the ECU Connecting the CCU 1 Route the connector end of the CCU cable to the ECU and mak...

Page 7: ...d the T connector 7 Repeat steps 2 through 6 for the CCU Connecting Optional Devices to the Autopilot System You can use advanced features of the autopilot system by connecting optional NMEA 2000 compatible devices such as a wind sensor a water speed sensor or a GPS device to the NMEA 2000 network You can connect optional devices that are not NMEA 2000 compatible to the helm control through NMEA 0...

Page 8: ...ntrol of the rudder 4 Without touching the rudder or helm control allow the autopilot to calibrate the rudder 5 Select an option If the calibration did not complete successfully repeat steps 1 through 4 If the calibration completed successfully select OK Enabling the Shadow Drive If you installed the autopilot on a boat with a hydraulic steering system you can install a Garmin Shadow Drive valve s...

Page 9: ...ght line If you are performing this procedure outside of the Sea Trial Wizard from the heading screen select Menu Setup Dealer Autopilot Configuration Automated Setup Calibrate Compass Begin 2 Follow the directions on the helm control until calibration is complete taking care to keep the boat as steady and flat as possible The boat should not list during calibration 3 Select an option If the calib...

Page 10: ...ing until it matches north on the magnetic compass 3 After the fine heading setting matches north on the magnetic compass select Done Testing and Adjusting the Configuration NOTICE Test the autopilot at a slow speed After the autopilot has been tested and adjusted at a slow speed test it at a higher speed to simulate normal operating conditions 1 Drive the boat in one direction with the autopilot ...

Page 11: ...Dealer Autopilot Configuration Steering System Setup Drive Unit Class 3 Select Other or Solenoid according to the setting chosen in the Dockside Wizard 4 Select an option Select Generic Tune to re run the tuning procedure you completed during the Dockside Wizard Tuning an Existing Drive Unit Select Drive Unit Voltage to adjust the drive unit voltage according to the specifications provided by your...

Page 12: ...ive Unit Class 2 Select Other or Solenoid according to your selection in the Dockside Wizard 3 Select Advanced Tuning Tune Error Tolerance 4 Center the rudder position let go of the rudder control and select Begin 5 Select Tune The rudder position moves from 5 to 5 each time you select Tune and the drive unit steers the rudder accordingly 6 After the drive unit stops observe the Rudder Error and P...

Page 13: ...ire Rx A from the helm control and the green wire Rx B from the helm control must be connected to NMEA 0183 ground À NMEA 2000 network provides power to the helm control Á 12 Vdc power source  Helm control à NMEA 0183 compatible device Wire Helm Control Wire Color Function NMEA 0183 Compatible Device Wire Function Ê N A Power Ë Green Rx B connect to NMEA 0183 ground NMEA 0183 ground Ì Blue Tx A R...

Page 14: ...129283 Cross track error 129284 Navigation data 130306 Wind data Helm Control Type PGN Description Transmit and receive 059392 ISO Acknowledgment 059904 ISO Request 060928 ISO Address Claim 126208 NMEA Command Request Acknowledge Group Function Type PGN Description 126464 Transmit Receive PGN List Group Function 126996 Product Information Transmit only 128259 Water Speed 129025 Position Rapid Upda...

Page 15: ...RPM Limit Allows you to adjust the lowest RPM point of your boat If the value does not match the value on the helm control you can adjust the value High RPM Limit Allows you to adjust the highest RPM point of your boat If the value does not match the value on the helm control you can adjust the value Max Speed Allows you to adjust the maximum speed of your boat If the value does not match the valu...

Page 16: ...lace Contacting Garmin Product Support Go to www garmin com support and click Contact Support for in country support information In the USA call 913 397 8200 or 800 800 1020 In the UK call 0808 2380000 In Europe call 44 0 870 8501241 Garmin and the Garmin logo are trademarks of Garmin Ltd or its subsidiaries registered in the USA and other countries GHP GHC Reactor and Shadow Drive are trademarks ...

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