2.3 Bolt-In Installation

2.3.1 Preparation of Boat Structure

The Seakeeper Drawing No. 90591, Seakeeper 3 Generic Installation Guide shows various structural arrangements to support the installation of the Seakeeper. The Generic Installation Guide offers above and below deck installation arrangements with fiber-reinforced plastic (FRP) and aluminum structures, which should provide solutions for most vessels. The Seakeeper 3 is affixed to the hull structure via four bolts in the
Seakeeper 3 frame. Depending on the structure to which the Seakeeper is fastened, blind threaded holes or through-bolting can be utilized.

Refer to Seakeeper Drawing No. 90374, Seakeeper 3 Bolt in Installation Guide. Important dimensional and load information is given in this drawing that will impact the design details of the structure that will receive the Seakeeper. It is assumed that a proper structural analysis has been performed for the hull structure to which the Seakeeper will be fastened to ensure proper strength margins for the loads the Seakeeper will create during operation.

The hull structure supporting the Seakeeper should be installed so the Seakeeper is parallel to the waterline in the transverse direction and within 1 degree longitudinally.

In addition, the four areas on top of the structure on which the Seakeeper 3 frame and isolation gaskets will rest, need to be co-planar within .06 in. (1.5 mm) to minimize potential distortion of Seakeeper support frame when installed. The isolation gaskets are only used when the Seakeeper 3 is mounted to a dissimilar metal structure.

Seakeeper offers an optional installation template kit, P/N 90362, which contains four plates that mimic the mating surfaces of the four feet located on the Seakeeper ’s foundation. These plates have 4 holes located at the same centers as the mounting holes on the Seakeeper 3.The fixture locates the hole patterns at the proper spacing both in the forward-aft direction and the port-starboard direction. See Figure 6 below. Once assembled, the fixture can be used to check clearances and alignment of the hull structure.

Note: Do NOT use the installation fixture to establish the Seakeeper envelope dimensions. Refer to Drawing No. 90374 – Seakeeper 3 Bolt-In Installation Details, for envelope dimensions. A 3-D model of the Seakeeper is available on the Seakeeper Dealer Access website (www.seakeeper.com) to aid in designing the Seakeeper foundation and the space around the Seakeeper

NOTE: MAKE SURE NO OBSTRUCTIONS FROM THE HULL STRUCTURE CAN BE SEEN WITHINTHE INSIDE OF THE INSTALLATION TEMPLATE KIT (INSIDE THE MARKED RED LINES) AS SEEN IN FIGURE 7. REFERENCE SEAKEEPER DRAWING NO. 90374 – SEAKEEPER 3 BOLT-ININSTALLATION DETAILS
.

Figure 6 – View of Installation Fixture
Figure 7 – Clearances Between Cable Guide Bands and Hull Structure

CAUTION: Tight clearances from cable guide bands to hull structure.
See Figure 7 for dimensions and reference Seakeeper Drawing No. 90374,
Seakeeper 3 Bolt-In Installation Details, for complete Seakeeper 3 envelope.

2.3.2 Transfer of Holes to Boat Structure

  1. Lower assembled fixture onto hull structure.
  2. The four areas where the feet of the Seakeeper will rest should be coplanar to within .06 in. (1.5 mm). See Figure 8.
  3. Align fixture (P/N 90362) in desired location and transfer holes from fixture plate to the hull structure.

Note: Holes in fixture plate are ø0.64 in. (16.26 mm).

Figure 8 – Coplanar Requirement
Helical Thread Insert
Installation Fixture

2.3.2.1 Blind Hole Installation

  1. Remove Template Fixture and drill four (4) 0.65 in. (16.5 mm) holes perpendicular to the vessel structure to a minimum depth of 0.94 in. (24 mm). Take special care to drill perpendicular to mounting surface. A drill guide is recommended. Remove any impeding obstructions.
  2. Tap drilled holes for helical thread inserts per documentation accompanying helical threaded inserts. (Tap will be included in thread insert kit.)
  3. Install four (4) M16-2.0 X 24 mm threaded inserts into holes in hull structure at drilled and tapped locations using threaded insert manufacturer provided installation tool.
  4. Remove threaded insert prong / tang after threaded inserts are installed.

2.3.2.2 Through-Hole Installation

  1. Remove Template Fixture and drill four (4) 0.67 in. (17 mm) ø holes perpendicular to the vessel structure.

NOTE: Take special care to drill perpendicular to mounting surface. A drill guide is recommended.

2.3.3 Installation of Seakeeper

  1. Lower Seakeeper into position onto the hull foundation beams and align over drilled holes. Apply a small bead of marine sealant (e.g., SILI-THANE 803 or equivalent)between mating surfaces of Seakeeper frame and hull structure to prevent moisture wicking into bolt holes.
    1. For dissimilar metal foundations locate and position 4 isolation gaskets onto foundation beams and apply a small bead of marine sealant (e.g., SILI-THANE 803 or equivalent) between both mating surfaces of each isolation gasket where it contacts the beam and the Seakeeper (See Figure 9).
Figure 9 – Isolation Gaskets (P/N 11671)
  1. Install mounting bolts:
    1. For Blind Hole Installations, install the Seakeeper supplied Grade 10.9, M16-2.0 x110 mm fasteners or alternative Grade 10.9, M16-2.0 bolts to maintain a minimum thread engagement of .94 in (24 mm). If Seakeeper supplied bolts do not achieve the minimum thread engagement because of the lamination thickness or structure, longer bolts of the same specification (M16-2.0, Grade10.9) should be sourced. If tapping directly into a metal frame shorter bolts maybe required. Apply a moderate coat of marine anti-seize (e.g., SAF-T-EZE nickel grade anti-seize, SBT-4N or equivalent) to the threads of each bolt and include a small bead of marine grade sealant (e.g., SILI-THANE 803 or equivalent) under each bolt head and washer before installation. See Figure 10 below.
    2. For Through-Bolt installation install the Seakeeper optional Thru-Bolt Kit (P/N 90641) Grade 10.9, M16-2.0 x 120 mm fasteners with a minimum of 2 threads passing through the nut If Seakeeper supplied bolts do not pass entirely through the Extra Wide / Heavy Hex Nut because of the frame thickness, longer bolts of the same specification (M16-2.0, Grade 10.9) should be sourced. Apply a moderate coat of marine anti-seize (e.g., SAF-T-EZE nickel grade anti-seize, SBT-4N or equivalent) to the threads of each bolt and include a small bead of marine grade sealant (e.g., SILI-THANE 803 or equivalent) under each bolt head and washer before installation. See Figure 11 below.
Figure 10 – Blind Hole Installation Detail
Figure 11 – Thru-Bolt Installation Detail
  1. Torque all fasteners to 155 ft-lbs (210 Nm).
    1. New bolts matching the Seakeeper specification must be used for each installation.
  2. Proceed to electrical and cooling portion of the installation.

3.0 Electrical Installation

3.1 Electrical Installation Introduction

This section for electrical installation explains how to mount the electrical equipment and how to connect the electrical cables.

Reference Documents:


The following images (Figure 12) show the electrical equipment included with the Seakeeper 3 Hardware Scope of Supply (Drawing No. 90388) and are labeled on Seakeeper 3 Cable Block Diagram (Drawing No. 90377):

DC Control Power Input
(20248)
Seawater Pump Input
(30327)
Seawater Pump Output
(20334)
NMEA CAN, 19.6 ft (6 m)
(30332)
Ethernet M12 D-Code,
32.8 ft (10 m)
(30330)

Figure 12 – Seakeeper 3 Electrical Equipment

3.2 Electrical Equipment Power Connections

Reversing polarity on the DC power input to the Seakeeper can result in damaging the electronics in the control system.


3.2.1 High Current 12 VDC Power Source Requirements:

SourceBattery Bank, 12 VDC, Marine, Deep Cycle
Voltage Range11 – 15 VDC
Continuous Current80 A (maximum, spool up)
Overcurrent Protection100 A (Customer Supplied)

3.2.2 High Current 12 VDC Power Connection Instructions

  1. Connect high-current power red and black cables, 2 AWG conductors, to the 12 VDC power source.
    1. Both cables (red and black) are supplied at length 13 ft (4 m) and approximately 0.5 m is routed within the gyro frame.
  2. Connect high-current power positive (B+, red) conductor through 100 A overcurrent protection device, dedicated battery isolation switch (customer supplied), and to battery positive (B+) terminal.
  3. Connect high-current power negative (B-, black) conductor directly to battery negative (B-) terminal or to vessel main negative bus.
  4. If the 2 AWG high current 12 V power input conductors are shortened or lengthened, use heavy-duty eyelet (closed end) terminal such as Molex 19221-0235 and follow instructions outlined in the following steps.
  1. The bare wire strands should extend fully into the barrel of the heavy-duty eyelet and be crimped in two places if possible then sealed with double-wall heat shrink tubing. Crimp heavy-duty terminals with Quick Cable 4245 Crimp Tool, Molex19284-0034 Crimp Tool, or equivalent using manufacturer’s instructions.
  1. Use heavy-duty eyelet (closed end) terminal such as Molex 19221 – Strip insulation from 2AWG conductor to the length of the terminal barrel approximately as shown.
  1. Insert stripped end of 2 AWG conductor fully into barrel of heavy-duty eyelet (closed end) terminal, approximately as shown.

4. Crimp with quick cable 4245 cub crimp tool or equivalent, double
crimp, as shown.

  1. The resultant crimp(s) should fully enclose and confine the conductor strands from all sides and withstand an aggressive manual pull test.
  1. Install approximately 1.5 in. (38 mm) of double wall (adhesive lined) heat shrink tubing over both the terminal barrel and the conductor insulation. Heat shrink in place until tubing conforms to barrel and conductor shape and adhesive seals the junction (See Figure 13).
Figure 13 – Typical 2 AWG Conductor Eyelets with Shrink Tubing

3.2.3 Low Current 12 VDC Power Source Requirements

Source:Battery Bank, 12 VDC, Marine Deep Cycle
(Seakeeper recommends AGM batteries)
Voltage Range:11 – 15 VDC
Continuous Current:9 A
Overcurrent Protection:15 A (Customer Supplied)

3.2.4 Low Current 12 VDC Power Connection Instructions

Reversing polarity on the DC power input to the Seakeeper can result in damaging the electronics in the control system.

  1. Install Seakeeper-provided Low Current DC Power Input Cable, (P/N 20248), to battery bank, per Drawing Number 90377.
  2. Connect control power positive conductor (B+, red) through dedicated over-current protection device (customer supplied) and a dedicated Seakeeper isolation switch (customer supplied). A 2AWG, B+ conductor (red), is capable of carrying the current for both the High Current, Low Current, and Seawater Pump from the 12VDC power supply to the dedicated battery isolation switch.
  3. Connect control power negative conductor (B-, black) directly to battery minus terminal or negative DC bus bar.
  4. Before connecting low-current control power cable to Seakeeper, check for proper voltage and polarity with a DC multimeter using Figure 14 below.
Figure 14 – Low Current 12 VDC Power Input Connector Contact Assignments (Front)
  1. Connect low-current control power cable to Low Current 12 VDC power input connector on the Seakeeper, Deutsch DTP04-2P connector.

3.2.5 DC Seawater Pump Power Source Requirements

Source:12 VDC from the Seakeeper
Voltage Range:11 – 15 VDC
Current Rating:On Demand, typically ~ 10 A
Overcurrent ProtectionPer pump specification, max 15 A

3.2.6 DC Seawater Pump Power Connection Instructions

DC Seawater Pump Power Input Connection:

  1. Install Seawater Pump 12VDC Input Cable (P/N: 30327) to Seakeeper 3 “SW Pump DC In” (as shown in Drawing No. 90377) with overcurrent protection corresponding to seawater pump selected.
  2. Connect the 16 AWG positive conductor (red) through dedicated overcurrent protection device (customer-supplied), maximum of 15 A, to dedicated battery isolation switch.
  3. Connect the 16 AWG negative conductor (black) directly to battery negative terminal or DC main negative bus bar.
  4. Before connecting Seawater Pump 12VDC IN cable to Seakeeper, check for proper voltage and polarity with a DC multimeter using Figure 15 below.
Figure 15 – 12 VDC Seawater Pump Power Input
  1. Connect Seawater Pump 12VDC Cable to Seawater Pump 12 VDC In connector on the Seakeeper, Deutsch DT04-2P connector.

DC Seawater Pump Power Output Connection:

  1. Connect Seawater Pump 12VDC Output Cable to the Seakeeper 3 “SW Pump 12VDC Out” for DC power output to the seawater pump.
    1. The Seawater Pump 12VDC Output Cable is a 2 x 16AWG cable, 16 ft (5 m) length, with a size 16 female Deutsch plug.
  2. Pumps rated at 12 VDC, 15 A maximum, customer-supplied, must be configured with a Deutsch DT series, 2-pin receptacle to mate with the connector shown in Figure 16.
Figure 16 – Seawater Pump Deutsch Connector
  1. The Seawater Pump 12VDC Output cable must be routed and installed in the vessel from the Seakeeper 3 “SW Pump12VDC Out” Deutsch connector (pins end) to the DC seawater pump cable Deutsch connector (socket end).
  2. Connect the Seawater Pump Output cable plug end (socket end) to the customer-supplied receptacle end (pin end). The recommended wiring is shown in Figure 17.
Figure 17 – Cable 5 – Seawater Pump

3.3 Electrical Equipment Ground Connection

  1. Connect the Seakeeper foundation ground stud, shown in Figure 18, to vessel ground.
    1. Install ground cable (4 AWG or 25 mm2, Customer Supplied) from the M6 brass ground stud to vessel grounding bus to comply with:
      1. EM/IEC 60204-1 Clauses 6.3.3 and 8.2.3.
      2. ABYC E-11 July 2018 Clauses 11.5.2 and 11.16.1.

NOTE: USE ONLY THIS LOCATION FOR GROUNDING THE SEAKEEPER TO THE BOAT GROUND.

Figure 18 – Ground Stud on Frame

b. A proper ground connection is critically important for corrosion
protection and helps to ensure the ignition protection of the unit
by ensuring it does not carry any stray current.

c. NOTE: the ground is not referring specifically to a bonding system
but for outboard boats generally refers to the outboard engine
negative terminal, or its bus, to the DC grounding bus. This connection
shall be used only as a means of maintaining the negative side of the
circuit at ground potential and is not to carry current under normal
operating conditions. See Figure 19.

Figure 19 – ABYC E-11, figure 4A, Typical Outboard DC System

3.4 ConnectBox Display Connections

3.4.1 Seakeeper 3 Display Options

A compatible display is required with the installation of a Seakeeper 3 to support the full functionality of the unit through the Seakeeper App in addition to the ConnectBox. The Seakeeper App provides an interface for controlling the Seakeeper 3 or viewing the Settings, Service, Info, and Alarm pages. The Seakeeper ConnectBox can be helm-mounted to provide an additional interface for the control of the Seakeeper 3 but does not replace the need for a Seakeeper compatible display.

The Seakeeper 3 has several control interface connection options to support the Seakeeper App:

  1. Connect the Seakeeper 3 to a compatible Multifunction Display (MFD) as seen in Figure 20.
  2. Install an optional Seakeeper 5″ Touch Display (P/N 90467) as seen in Figure 21.
  3. A combination of a compatible MFD and an optional 5″ Touch Display is also available (See drawing 90377).

The following figure provides a schematic of two display options. The subsequent sections outline the instructions and references for connecting the Seakeeper 3 to each of these display options.

Figure 20 – Standard ConnectBox Configuration with Compatible MFD
Figure 21 – Optional ConnectBox Configuration with 5″ Touch Display

3.4.2 Connecting to a Compatible MFD

  1. The Seakeeper 3 can be connected to a variety of available MFD systems. Refer to the Technical Bulletins Section of the Seakeeper Technical Library for manufacturer specific MFD compatibility technical bulletins.
    1. MFD specific Technical Bulletins will be updated regularly as new MFD systems become available. Currently Garmin, Raymarine, NAVICO (Simrad, Lowrance, B&G), and Furuno offer compatible MFD models.
    2. Once a compatible MFD has been selected, refer to the appropriate manufacturer specific Technical Bulletin for integration instructions.
  2. Connect Seakeeper-supplied Ethernet Adapter cable, D-Code 32.8 ft (10 m) cable to MFD manufacturer-specific Ethernet adapter cable (See Figure 20 above). Custom Ethernet cables for specific MFD manufacturers are available through Seakeeper and must be purchased with the Seakeeper 3 when connecting to an MFD.

3.4.3 Connecting to an Optional Seakeeper 5″ Touch Display

If not utilizing a compatible MFD display, a Seakeeper 5” Touch Display must be purchased from Seakeeper. The Seakeeper 5” Touch Display (P/N 90467) includes the components shown in the following figure and will be integrated with the ConnectBox.

Seakeeper 5″ Touch Display Components
(P/N 90467)
  1. Determine location of Seakeeper 5” Touch Display:
    1. The desired location of the 5” Touch Display must be determined with respect to the vessel’s arrangement.
    2. The 5” Touch Display should be located on or near the helm or another easily accessible location.
  2. Route CAN communications cable:
    1. The CAN Cable, (labelled NMEA 2000 Cable in figure), is a 82 ft (25 m) shielded cable that connects the ConnectBox Tee adapter to the 5” Touch Display.
    2. The NMEA 2000 cable must be routed and installed in the vessel from the Seakeeper 3 wire harness CAN Tee to the Tee Adapter at the Seakeeper 5” Touch Display, included with P/N 90467.
  3. Install Seakeeper 5″ Touch Display equipment:
    1. Console space required: Approx. 5.24 W x 3.70 H in. (133 x 94 mm)
    2. Mounting Instructions, Surface Mount: see Envelope and Mounting Details, in Drawing No. 90438 – 5” Display Envelope and Mounting Details.
  4. CAN communications tee adapter and terminator mounting instructions:
    1. Console space required, Rear: Approx. 4 W x 3 H in. (102 x 76 mm)
    2. Mounting Instructions: Rear mount on vessel console panel, within 2 ft (0.6 m) of Display.
    3. Hardware required: One mounting screw for .197 in. (5 mm) diameter mounting hole on Tee Adapter.
  5. Connect Seakeeper 5” Touch Display Equipment:
    1. The Seakeeper 5” Touch Display is connected in accordance with Figure 21 above.

3.4.4 NMEA 2000 Network Connection

The Seakeeper 3 requires a connection to the vessel’s NMEA 2000 network backbone via a drop cable for access to the GPS signal. The Seakeeper 3 will monitor information on the NMEA network to support and optimize the performance of the Seakeeper 3. If no GPS signal is detected, a warning will appear on the Seakeeper display. The Seakeeper will not spool-down, but the operation of the unit will be limited until the GPS signal returns.

  1. Install customer-supplied NMEA 2000 Tee Adapter (space required: approximately 4 W X 3 H in. (102 X 76 mm).
  2. Connect NMEA Backbone to Tee Adapter. NOTE: NMEA drop cable can be no longer than 19.6 ft (6 m) in length.
  3. Connect Seakeeper-supplied NMEA cable (P/N: 30332) to the customer-supplied NMEA 2000 Tee Adapter on vessel’s NMEA 2000 backbone.
    1. An active NMEA 2000 compatible GPS signal is required on the vessel’s NMEA 2000 backbone to operate the Seakeeper 3.
      • If no GPS signal is detected, a Speed Over Ground (SOG signal) warning will be present on the Seakeeper app. See TB-90640 for NMEA connectivity guidance.

3.4.5 ConnectBox Helm Mounting – Optional

  1. Console space required: Approx. 3.41 L x 4.15 W in. (87 x 106 mm).
  2. Mounting Instructions, Surface Mount: See Drawing No. 90558 – Seakeeper ConnectBox Helm Mounting Kit, for details. Seakeeper ConnectBox 3D Model available upon request.
  3. Mount ConnectBox Replacement Blank insert into Seakeeper 3 enclosure at the original location of the ConnectBox.

4.0 Cooling Installation

4.1 Cooling Installation Introduction

Reference Documents:

The Seakeeper 3 is shipped with the cooling circuit (shown in Figure 22) filled and ready for use. The Seakeeper 3 requires connection to a raw water pump, referred to as the seawater pump, to cool the closed loop cooling circuit on the unit. The required seawater flow through the Seakeeper 3 heat exchanger is between 2 – 6 GPM (7.6 – 22.7 LPM), under all vessel operating conditions. Prior to operation, confirmation of glycol level is required.

Seakeeper offers a compatible self-priming DC Seawater Pump (P/N 30331) that is prewired for the
Seakeeper 3 Installation and covered under the standard Seakeeper warranty. See Drawing No. 30331,
Seakeeper DC Seawater Pump Assembly for details and the Seakeeper Options and Accessories Price List for pricing information.

Figure 22 – Seakeeper 3 Cooling Components

4.2 Installation Considerations

  1. Installer is responsible for supplying a dedicated seawater pump and associated plumbing. Seawater connections on the Seakeeper heat exchanger mate with ¾ in. (19mm) hose. An optional seawater pump can be purchased through Seakeeper, P/N30331.
  2. Seawater connections on the Seakeeper heat exchanger mate with 0.75 in. (19 mm) hose.
  3. The seawater pump operates on 12 VDC with a max overcurrent protection rating of 15 A.
  4. The seawater pump is powered by Seawater Pump Output Cable, via “SW Pump 12 VDC Out” connector on the Seakeeper 3, as outlined in Electrical Installation Section.
  5. A dedicated through-hull fitting should be installed for each Seakeeper unit onboard the vessel to ensure sufficient seawater flow to each unit.
  6. It is recommended that the seawater pump is located below the waterline, as close to the baseline of the vessel as practically possible, to maintain positive inlet pressure on the pump in all operating conditions.
  7. A self-priming seawater pump may be required to maintain water flow in all underway conditions. Cavitation can occur at the seawater inlet and potentially cause an air-lock condition restricting seawater flow to the heat exchanger.
  8. Maximum allowed seawater pressure in heat exchanger is 20 psi (1.4 bar).
  9. Seawater flow requirement through heat exchanger is 2 GPM (7.6 LPM) minimum and 6 GPM (22.7 LPM) maximum under all operating conditions of the boat.

    When sizing seawater pump, installer should factor in losses for raw water plumbing. In addition to initial operation at dock, new Seakeeper installations should be checked to be within the flow requirements while vessel is at speed. Flows higher than 6 GPM (22.7 LPM) could affect heat exchanger life.
  10. Vented loops (Figure 23) are optional and should only be considered with centrifugal style pumps. Self-priming or positive displacement style pumps do not require a vented loop, this includes Seakeeper P/N 30331.
Figure 23 – Typical Seawater Plumbing Arrangement

4.3 Connecting Seawater to Heat Exchanger

Refer to Figure 23 for typical seawater plumbing arrangement.

  1. Connect seawater pump to Seakeeper dedicated through-hull fitting. A strainer and seacock valve should generally be installed between the seawater inlet and the pump.
  2. Connect seawater from installer-supplied pump to lower ¾ in. (19 mm) hose barb onheat exchanger. Use the same practices as other below waterline seawater plumbing.
  3. Connect seawater discharge (upper hose barb) to overboard drain. Use the same practices as other below waterline seawater plumbing.
  4. Required flow rate is 2 GPM (7.6 LPM) minimum and 6 GPM (22.7 LPM) maximum.
  5. In addition to initial operation at dock, new Seakeeper installations should be checked for minimum 2 GPM (7.6 LPM) flow while vessel is at speed and when backing down.
    1. If no other method of confirming flow is available, discharge line may be temporarily diverted to a bucket. Flow is calculated from time to fill a known volume.
    2. A self-priming seawater pump (customer/installer supplied) may be required due to installation location to maintain water flow in all underway conditions where cavitation near the intake may occur and potentially cause an air-lock condition restricting seawater flow to the heat exchanger.
  6. Inspect raw water plumbing after sea trial for any signs of leakage.

4.3.1 Seakeeper Optional DC Seawater Pump (P/N 30331)

  1. Seakeeper offers a self-priming DC Seawater pump as an optional addition, P/N 30331– DC Seawater Pump Assembly, shown in Figure 24.
  2. The Seakeeper Seawater Pump is a 24 VDC pump operated at 12 VDC for the Seakeeper 3 and maintains a seawater flow of approx. 2.5 GPM (9.5 LPM) at 12V DC.
  3. The pump assembly is pre-wired for connection to Seakeeper 3 Seawater Pump Output Cable and includes a seawater strainer and various fittings. The pump specifications are as follows:

NOTE: Use only SeaFlo-provided threaded fittings for DC Seawater Pump 30331.

Voltage:24 VDC (Operate at 12 V for Seakeeper 3)
Rated Flow:2.5 GPM (9.5 LPM), at 12 VDC
Overcurrent Protection:15 A
Ignition Protection:ISO 8846 or equivalent
Figure 24 – Seakeeper 3 DC Seawater Pump (30331)

4.4 Adding Coolant

  1. The Seakeeper 3 cooling system is filled to proper level when shipped. If level has dropped, check for evidence of leaks at all connections before adding fluid as described below. If coolant is at the correct level, skip to Step 5.
  2. The minimum and maximum glycol levels are shown in Figure 25.
Figure 25 – Seakeeper 3 Coolant Level
  1. Mix 50% ethylene glycol with 50% distilled water in a clean container. Refer to Table 1or glycol manufacturer’s literature for freezing points.
    1. It is required that ethylene glycol with corrosion inhibitors be used. Most commercially available glycol has these additives standard.
  1. Remove reservoir cap and pour mixture in until level reaches top face of the reservoir enclosure, as shown in Figure 25.
    1. Filling reservoir above this level will not cause any damage but coolant may be expelled from pressure relief port in cap due to normal thermal expansion of coolant.
  2. Once the Seakeeper 3 and DC seawater pump are connected to 12 VDC power:
    1. At the MFD or Display check for any ALARMS.
    2. Cycle the Seakeeper 3 power, and Press the POWER ON button.
    3. The flywheel will start to spin and the glycol pump will start on demand.
    4. Recheck glycol level with fluid circulating in coolant circuit. Inspect reservoir to check coolant level is above minimum level of Figure 25. Replace cap if removed.
  3. After several minutes of running, press POWER OFF button to turn power off to the Seakeeper.
  4. The cooling system is self-purging. If small amounts of air are in the system, they will most likely be dislodged during the first sea trial. Recheck level after sea trial and add fluid if required.

    NOTE: It is not uncommon to see some air in the coolant system. It is normal and will not affect operation.

5.0 Installation Requirements

5.1 Installation Requirements Introduction

The Installation Requirements section outlines the components and tools needed for the Seakeeper 3 Installation that are not included within the scope of supply. Seakeeper offers Core Installation Kits which provide the required components for DC Seakeeper installations. These kits are outline in the DC Installation Kits Technical Bulletin (TB-90575).

5.2 Required Supplies for Seakeeper Installation

Table 1 outlines the customer-supplied components required for the Seakeeper 3 installation:

Table 1: Components and Supplies Required for Seakeeper 3 Installation

ItemDescriptionQTYInstallation Manual Reference SectionOther ReferenceSystem
1Spreader bar for lifting the Seakeeper1Transport & UnpackingP/N 11766Mechanical
2Seakeeper 3 Fixture Kit1Bolt-In InstallationP/N 90362Mechanical
3Threaded insert M16-2 (24 mm)4Bolt-In InstallationDwg 90374Mechanical
4Seakeeper 3 Bolt-In Kit1Bolt-In InstallationP/N 90375Mechanical
5Seakeeper 3 Thru-Bolt Kit1Bolt-In InstallationP/N 90641Mechanical
6Marine SealantARBolt-In InstallationDwg 90374Mechanical
7Nickel-based Anti-seizeARBolt-In InstallationDwg 90374Mechanical
8Circuit Breaker, 100A1Electrical Equipment Power ConnectionsDwg 90377Electrical
9Circuit Breaker, 15 A2Electrical Equipment Power ConnectionsDwg 90377Electrical
10Battery Isolator Switch1Electrical Equipment Power ConnectionsDwg 90377Electrical
11M6 terminal lug for grounding Seakeeper1Electrical Equipment Ground ConnectionsDwg 90377Electrical
12Cable, 4 AWG, for grounding Seakeeper
at rear brace to vessel ground (Cable 6, used with item 11)
1Electrical Equipment Ground ConnectionsDwg 90377
ABYC E-11
Electrical
13Seawater pump, 12VDC, 15 A max Optional: DC Seawater Pump Assembly (pre-wired) 1Electrical Equipment Power ConnectionsDwg 90377
P/N 30331
Electrical / Cooling
14Compatible MFD or Optional Seakeeper 5″ Touch Display1Electrical Equipment Power ConnectionsDwg 90377
TB-90640 / P/N90600
Electrical
15Through-hull fittings (1 high-speed pick-up / 1 overboard discharge)2Connecting Seawater to Heat ExchangerDwg 90376Cooling
16Seawater Strainer *included with Seakeeper Seawater Pump (P/N 30331)1Connecting Seawater to Heat ExchangerDwg 90376Cooling
17Seacock Valve1Connecting Seawater to Heat ExchangerDwg 90376Cooling
183/4 in. (19 mm) ID Seawater Suction Hose AND Discharge HoseARConnecting Seawater to Heat ExchangerDwg 90376Cooling
19Hose clamps for seawater plumbing to ¾ in. (19 mm) hose barb (2 per hose barb)4Connecting Seawater to Heat ExchangerDwg 90376Cooling

AR = As Required
Dwg = Drawing

5.3 Tools Required for Installation

Table 2 outlines the tools and equipment required for the Seakeeper 3 installation:

Table 2: Tools Required for Installation

ItemDescriptionUse
1Hoist, Forklift, or CraneUnpacking and lifting Seakeeper 3 into position
2Transfer Punch KitLocate foundation hole penetrations
3Drill / Drill PressBolt hole penetrations
4Threaded Insert Installation KitTap and install threaded inserts (M14-2 X 1.5)
51/2″ Drive Torque WrenchFoundation Bolts (155 ft-lbs/210 Nm)
612 – 18″ Extension, 1/2″ DriveFoundation Bolts
724mm Socket, 1/2″ DriveFoundation Bolts
8Utility KnifeScoring Cable Jackets
9Wire cutterDC Power cables
10Wire stripperDC Power cables
11Greenlee K05-Synchro Crimp Tool or equivalent12 VDC High-Current Input Cables, 2AWG Ground Cable, 4 AWG
12Heat GunFor cables 1, 2, and 6 heat shrink
13¼ in. (7mm) Nut Driver / Flat Head ScrewdriverHose clamps
14Fish TapeCable Pulls
15Hole SawThru-hull fittings

NOTE: Additional tools may be required for the installation of customer supplied components.

6.0 Installation and Start Up Checklist

6.1 Installation and Start Up Introduction

Reference Documents:

The Installation and Start Up Checklists in this section provide an overview of the primary steps covered in the installation manual and should be referenced throughout the installation process. Upon completion of the
Seakeeper 3 installation, the installer should commission each Seakeeper unit with the Seakeeper Commissioning Form (90437). The Commissioning Checklist Work Instruction (SWI-105) provides a checklist of items to inspect and verify during the commissioning process and serves as a supplement to the Seakeeper Commissioning Form (90437).

All Seakeeper stabilizers should be commissioned to verify installation specifications and requirements have been implemented properly. The commissioning process should include completion of the Seakeeper
Commissioning Form (90437), all the items in the Installation Checklist, and verification of Seakeeper 3 operation without alarms or abnormal behavior.

6.2 Installation Checklist

6.2.1 Mechanical Checklist

Reference Section: 2.0 Mechanical Installation

CHECKREQUIREMENT TO BE MET
Seakeeper foundation installed per requirements of the Seakeeper 3 Bolt-in
Installation Details.

* Structure designed to accommodate Seakeeper 3 forces, as defined in Drawing No. 90374 with a minimum safety factor of 3.0.
* Foundation is co-planar within 0.06″ (1.5 mm).
Clearances around Seakeeper meet service and operating specifications and no obstructions are within the Seakeeper envelope.
Seakeeper 3 Bolt-In Kit (P/N 90375) or Through-bolt Kit (P/N 90641) is installed with a minimum thread engagement of 0.8″ (20.42 mm) or bolt passing entirely through backing nut.

* If longer mount bolts are required, they should match the M16-2.0, Grade10.9 specification provided. Stainless steel mounting bolts cannot be used for the Seakeeper 3.
Foundation bolts torqued to specification: 155 ft-lbs (210 Nm).
Seakeeper 3 cover can be removed to access and service the unit.

6.2.2 Electrical Checklist

Reference Document: Seakeeper 3 Cable Block Diagram
Reference Section: 3.0 Electrical Installation

6.2.2.1 High Current 12 VDC Power Source

CHECKREQUIREMENT TO BE MET
Connect High Current DC Input cables (P/N: 20335 and 20336) to customer supplied 2 AWG B+ and B- conductors to allow for routing to 12 VDC power source.

* Connect High Current DC Input B+ conductor (red) through 100 A circuit breaker(customer-supplied) and a dedicated battery isolation switch (customer-supplied), directly to the battery positive terminal or bus bar.
* Connect High Current Input B- conductor (black) to battery negative terminal or DC negative bus bar.
If the 2 AWG high-current 12V power input conductors are shortened or lengthened, use heavy-duty eyelet (closed end) terminals such as Molex19221-0235.

6.2.2.2 Low Current 12 VDC Power Source

CHECKREQUIREMENT TO BE MET
Connect DC Input positive (red) cable (P/N: 20248) directly to a customer-supplied 15 A circuit breaker, then to the dedicated battery isolation switch
Connect DC Input negative (black) cable (P/N: 20248) to the DC negative bus bar or battery negative terminal.
Plug DC Input Cable connector end into the DT-Series connector labelled Low-Current 12 VDC in connector on the Seakeeper wire harness.

6.2.2.3 Seawater Pump Connection

CHECKREQUIREMENT TO BE MET
Connect Seawater Pump Input positive (red) cable (P/N: 30327) directly to a customer-supplied circuit breaker corresponding to the seawater pump overcurrent protection rating (max 15 A), then to the dedicated battery isolation switch.
Connect Seawater Pump Input negative (black) cable (P/N: 30327) to the DC main negative bus bar or battery negative terminal.
Connect Seawater Pump Output cable (P/N: 20334) receptacle end (pins) to Seakeeper SW Pump 12 VDC Out and the plug end (sockets) to customer-supplied 12 VDC seawater pump cable Deutsch connector termination.

6.2.2.4 Ground Connection

CHECKREQUIREMENT TO BE MET
Install lugs on both ends of customer-supplied 4 AWG ground cable.
Connect one end of ground cable to nearest vessel ground and other end to ground stud on Seakeeper frame.
Vessel grounding bus to comply with:
* EM/IEC 60204-1 Clauses 6.3.3 and 8.2.3
* ABYC E-11 July 2018 Clauses 11.5.2 and 11.16.1.

6.2.3 Cooling Checklist

Reference Section: 4.0 Cooling Installation

CHECKREQUIREMENT TO BE MET
Purchase seawater pump for Seakeeper 3 to provide 2 – 6 GPM (7.6 – 22.7 LPM) with a max overcurrent protection rating of 15 A. Optional seawater pump can be purchased through Seakeeper, P/N 30331.
Connect and route 3/4″ (19 mm) seawater inlet hose from seacock valve to the seawater strainer, seawater pump, and then to the Seakeeper 3 heat exchanger inlet.
Connect and route 3/4″ (19 mm) seawater outlet hose from Seakeeper 3 heat exchanger outlet to the seawater overboard.
Test seawater pump:
* Verify 2 GPM (7.6 LPM) minimum and 6 GPM (22.7 LPM) maximum seawater flow through heat exchanger under all operating conditions of the vessel.
Verify coolant level in heat exchanger coolant reservoir, fill if needed.

6.3 Start Up Checklist

Refer to Seakeeper 3 Operation Manual, Startup Section for detailed start-up instructions.

Prior to beginning the start-up sequence all previous Sections of the Installation Manual for Mechanical, Electrical, and Cooling installation must be complete. Before continuing, the Seakeeper 3 cover must be installed, and the operating clearances must be clear of personnel and equipment

CHECKREQUIREMENT TO BE MET
Remove lifting eyebolts and install sealing bolts (M10-1.25 X 12 mm) and flat washers into lifting eyeholes and install cover.
Energize battery isolation switch, high-current 100 A breaker, low-current 15 A breaker, and seawater pump breaker.
Verify Seakeeper display is active and no alarms present.

* If the Seakeeper 3 display does not activate, turn off all circuit breakers immediately and check all wiring connections.
Check that battery voltage exceeds 12 VDC. A minimum battery voltage of 11 VDC is required for the duration of Seakeeper spool-up.
Override seawater pump “ON” and verify flow at seawater outlet.
(To activate override, at 0 RPM flywheel speed, hold down SERVICE button wrench icon for 5 seconds to reveal override screen)
Deactivate seawater pump when completed obtaining seawater flow rate.
Press Seakeeper ON/OFF Button and follow instructions in Seakeeper 3 Operation Manual for complete start-up instructions.
Verify no alarms are present.
Power Seakeeper 3 down, the Seakeeper 3 flywheel will take 2+ hours to coast down to 0 RPM.

7.0 Revision History

RevisionDescriptionDate
6Pre-ConnectBox Launch update. Thru-Bolt Installation added. Bolt-in kit changes. Cooling water system update.17FEB2023
7ConnectBox release.21JUL2023