Page 1
& user guide Jet Thruster Single & Combi www.jetthruster.com Jet Thrusters - JT-30 | JT-50 | JT-70 | JT-90 All our products are manufactured according to CE regulations. We keep the rights to change descriptions, graphs or statements, which are required for technical development of our Jet Thruster systems.
Page 2
Electrical Installation SELECT YOUR CONTROLS: CONTROLLER VERSION (PAGES 5-10) D-010-10C Holland Marine Parts D-010-06 D-010-10...
Page 3
- Power is on (no power check fuse) Combi Jet Thruster se�ngs Bow & Stern Thruster Green + Red Light on Conven�onal Bow Thruster + Stern Jet Thruster - Power on + Controller func�on ok Conven�onal Stern Thruster + Bow Jet Thruster Red Light Flashing Fast...
Page 4
CONTROLLER UNIT: SINGLE & DUAL HELM SET UP Combi Single E-307-00 (10m) E-301-00 (10m) E-304-00 (2m) (5m) (10m) (10m) 12V service battery Series parallel switch Always connect all battery negatives to a common ground. Pump unit (use E-308-00 to extend cable) Directional 3-way valve(s) (use E-309-00 to extend cable) D-010-10C...
Page 5
CONTROLLER UNIT: SINGLE & DUAL REMOTE SET UP Transmitter E-307-00 (10M) Receiver E-301-00 (1m) E-304-00 (2m) (5m) (10m) (10m) 12V service battery Always connect all Series parallel switch battery negatives to a common ground. Pump unit (use E-308-00 to extend cable) Directional 3-way valve(s) (use E-309-00 to extend cable) D-010-10C...
Page 6
CONTROLLER UNIT: BOW AND STERN DOUBLE SYSTEM & REMOTE SET UP D-010-10C Holland Marine Parts D-010-06 D-010-10...
Page 7
This controller is designed to control Jet Thrusters in single- and combi mode. Also This controller can be used to operate Conventional thrusters of any brand, also in combination with a Jet Thruster. This controller is designed to be used in pleasure crafts, to maneuver yachts sideways.
Page 8
2. Installation and Explanation Installation and Explanation - The controller Should be mounted Ver cally in an acessible loca on. - Use Washers under the moun ng screws to avoid damage and ensure a proper fixa on. - The controller is (if the provided caps are used) splashproof. (IP53) - Ventilaton is not necessary.
Page 9
3. Program Functions and Settings behind the Left cap you’ll find the dipswitches, Control Led’s and Invertswitches. Below their function is described. Dipswitches ((Firmware V04.001) dd 20-11-2018) On is Up and Down is Off. (Between brackets is standard setting.) - 1- Single (on) or Combi (off) (on) - 2- Conventional Bow thruster.
Page 10
Electrical Installation: Jet Thruster Single and Combi Holland Marine Parts recomments Optima Batteries Optima battery YT S 5.5L JT-30 12V 1 x YT S 5.5L 75Ah Visit our website JT-50 24V 2 x YT S 5.5L 75Ah www.jetthruster.com JT-70 24V 4 x YT S 5.5L 75Ah...
Page 11
If the controller indicated no Common ground there will be a Green light on and Red Flashing fast. Please follow this schedule to resolve this problem. Battery for Jet Thruster Battery for Controller Common Grounding point D-010-10C Holland Marine Parts...
Page 12
Jet Thruster pump units 30Kgf 50Kgf JT-50 compact 110 thrust LBS 24V/48V JT-30 compact 66 thrust LBS 12V Force Force 30 Kgf 50 Kgf Voltage DC Voltage DC 24V / 48V E-motor capacity kW E-motor capacity kW Current Current 480A...
Page 13
MosFet battery separator from the alternator. Please note: More electricity will be required as a result of the installation of the Jet Thruster. That is why in some cases it is recommended for the alternator to be converted to high yield or to place a separate alternator.
Page 14
JT-30 (12V) charged with 12V charger Contactor Optima battery Fuse Main switch Controller Charger 12V Service batteries Diode bridge Alternator Start battery D-010-10C D-010-06 D-010-10 Holland Marine Parts...
Page 15
JT-50 (24V) charged with 12V charger Series parallel switch Strips pre mounted Contactor Optima batteries Fuse Main switch Controller Charger 12V Service batteries Diode bridge Alternator Start battery D-010-10C Holland Marine Parts D-010-06 D-010-10...
Page 16
JT-50 (24V) charged with 12V Step up Charger Optima batteries Contactor Mac Plus - Step up charger Fuse Main switch Controller Charger 12V Service batteries Diode bridge Alternator Start battery D-010-10C D-010-06 D-010-10 Holland Marine Parts...
Page 17
JT-70/JT-90 (24V) charged with 12V charger Series parallel switch Strips pre mounted Optima batteries Contactor Controller Fuse Main switch Charger 12V Service batteries Diode bridge Alternator Start battery D-010-10C Holland Marine Parts D-010-06 D-010-10...
Page 18
JT-70/JT-90 (24V) charged with 12V Step up Charger Optima batteries Mac Plus - Step up charger Contactor Controller Fuse Main switch Charger 12V Service batteries Diode bridge Alternator Start battery D-010-10C D-010-06 D-010-10 Holland Marine Parts...
Page 19
JT-70/JT-90 (24V) in a 24V board network Optima batteries Controller Contactor 24V -> 12V converter Fuse Main switch Charger 24V Service batteries Diode bridge Alternator Start battery D-010-10C Holland Marine Parts D-010-06 D-010-10...
Page 20
JT-70/JT-90 (48V) in a 24V board network Series parallel switch Strips pre mounted Controller Optima batteries Contactor 24V -> 12V converter Fuse Main switch Charger 24V Service batteries Diode bridge Alternator Start battery D-010-10C D-010-06 D-010-10 Holland Marine Parts...
Page 21
JT-70/JT-90 (48V) in a 12V board network Series parallel switch Strips pre mounted Optima batteries Mac Plus - Step up Charger 12V -> 24V Contactor Controller Fuse Main switch Charger 12V Service batteries Diode bridge Alternator Start battery D-010-10C Holland Marine Parts D-010-06 D-010-10...
Page 22
JT-50/JT-70/JT-90 (48V) in combination with electric propulsion Controller Contactor 48V -> 12V 20A converter Main switch Fuse Main propulsion Charger 48V Fuse D-010-10C D-010-06 D-010-10 Holland Marine Parts...
Page 23
JT 70/90 - 48volt - 230V Grid Battery cable size: <1m 70mm2 >1m 95mm2 * This battery setup example shows a <1m cable length D-010-10C Holland Marine Parts...
Page 24
The Series Parallel Switch creates a temporary 24V environment out of two 12V batteries to power the DC motor from the pump unit. The switch itself operates at 12V. The moment the Jet Thruster system activates, 12V power activates the coil that makes the switch connects the battery cables.
Page 25
Operation: The pump head of the Jet Thruster system must be installed under the water line in order to prime this centrifugal pump. In some limited cases of fast moving vessels a vacuum can be produced when the nozzles rise above the waterline and the in- take remains in the water.
Page 26
air leading out of vessel Contactor at pump unit Select applied contactor support and position of F (+12V) and G (Ground) according to the pump unit the installation is applied for. See appendices for additional information. Position of electrical valve must be above water line.
Page 27
air leading out of vessel Contactor at pump unit Select applied contactor support and position of F (+12V) and G (Ground) according to the pump unit the installation is applied for. See appendices for additional information. Position of electrical valve must be above water line.
Page 28
Torque on battery cable connections and other parts Warning: Loose or unsufficient tightened battery connections can cause damage or fire: Make sure to tighten the nuts of the connections as mentioned. Use quality terminals and right crimping tools to ensure a quality electrical installation safety! Fuse holder: torque 15Nm to nuts.
Jet Thruster system. Remember: Always use com- mon sense when installing, using and servicing the Jet Thruster and it’s components. In case anything is not clear: Contact your dealer or Holland Marine Parts BV for assistance.
Installation & maintenance Before you start: watch our installation video’s! www.youtube.com/user/hollandmarineparts D-010-10C Holland Marine Parts...
Page 31
Important information before you start A Jet Thruster is a Battery powered water pump system which pumps water from A to B: The water intake and water exit can be at different locations in a boat, which is unique for bow or stern thruster systems for pleasure boats.
Page 32
3: Position of Nozzles (Bow and Stern) The Jet Thruster will be most effective when the nozzles are placed as far forward or aft as possible. The topside of the nozzle tube must be 7-10cm below the waterline, not deeper or higher.
Page 33
1: Pump, pump position and water inlet A Jet Thruster makes use of a dedicated, not-self-priming, centrifugal pump. You must place the pump below the water line for this reason. More specific: At least the top side of the pump head must be below the water line.
Page 34
You can place the pump any where in the boat as long as you keep the pump below the water line. You have to keep the water inlet close to the pump. Similar to cooling water for the main engine, the Jet Thruster sys- tem has a thru-hull connection.
Page 35
The water inlet must be close to the pump. The inlet is protected with a filter. Make use of the tool, pro- vided with the water inlet to have grip/control during installation. After you drilled the hole, make sure to remove anti fouling until you reach the gelcoat. You can mark the exact outside diameter of the flange from the inlet by carving around the flange with a knife.
Page 36
Do not lift the valve by the cover or by the cable, it is not designed for that. Jet Thruster Single: Remove the black plastic cover, by unscrewing the 3 screws. Below the cover you will find the terminals CDE for electrical connection.
Page 37
If your boat comes out of the water, do not clean it yet! Now in this situation the waterline is visible very well. It will give you a perfect reference where to place the nozzle. Jet Thruster nozzles are very small.
Page 38
You can use the 0-degree nozzle to place these in the sides of the boat. Because the pump can be in a different place, you can guide the hoses thru the boat, towards the valve, and the pump. A Jet Thruster is a Very flexible and efficient stern thruster.
Page 39
A Jet Thruster nozzle assembly includes the following components: • Composite nozzle • Composite guide ring • Composite 45 elbow (if you do not need it, do not use it) • Composite spacer rings 15mm & 25mm • Composite 2” nut •...
Page 40
Important Preparation advice: Possible the best thing you can do is to cut all hoses to the required length before you start the Nozzle parts assembly with Sikaflex291i: • Make sure the directional 3-way valve is fixed firmly into position •...
Page 44
• The nozzles of the Jet Thruster are located beneath the water line. Do not activate the system and do not operate the Jet Thruster when there are people, animals or vulnerable items in the vicinity of your boat and the inlet and nozzles.
Page 45
- In rare conditions it might be possible that the pump unit of the Jet Thruster does not prime. If you notice a high rpm from the pump unit and no thrust force, do not attempt to prime the pump unit by continuous activating the system.
Page 46
Winterising: Youtube Channel: 2” / 51 mm Jet Thruster - See video Preferably have the system winterised by a specialist. Please note: Frost/ice can do a lot of damage if you fail to drain the system. Use a compressor to remove the water present in the system by means of air pressure.
- Check - Change the Fuse 20A - Red Led Flashing fast - Engine is overheated - Let the Jet Thruster cool down 20+ min - Red Led Flashing fast - There is no common ground cable - See page 12 for wire schedule...
Page 48
- In rare conditions it might be possible that the pump unit of the Jet Thruster does not prime. If you notice a high rpm from the pump unit and no thrust force, do not attempt to prime the pump unit by continuous activating the system.
Page 54
Technical Specifications JT-30 Pump head in position I 60mm 210mm 243mm P-115-52: Straight pump outlet P-513-52: 90 pump outlet P-507-52: 2-way pump outlet 3 options for hose connector Water inlet assembly: on pump outlet: Connect with flexible hose to inlet on pump unit.
Page 55
158,7 105,3 158,7 105,3 158,7 226,25 226,25 226,25 UNLESS OTHERWISE SPECIFIED: DIMENSIONS ARE IN MILLIMETERS JT-30 Pump outlet Position 2 UNLESS OTHERWISE SPECIFIED: DIMENSIONS ARE IN MILLIMETERS JT-30 Pump outlet Position 2 Ra 3.2 0.03 0.03 Ra 3.2 0.03 0.03 ANGLES IN DEGREES - TOLERANCES ±0.2mm ±0.5º...
Page 56
Outlet Inlet 226,25 227,5 D-010-10C Holland Marine Parts UNLESS OTHERWISE SPECIFIED: DIMENSIONS ARE IN MILLIMETERS JT-30 Vertical + inlet 0.03 0.03 Ra 3.2 ANGLES IN DEGREES - TOLERANCES ±0.2mm ±1º - BREAK ALL EDGES Drawn by Toofan Pour Part No.
Page 58
Technical Specifications JT-50 Compact Pump head in position I 60mm 210mm 243mm P-115-58: Straight pump outlet P-513-58: 90 pump outlet P-507-58: 2-way pump outlet Water inlet assembly: 3 options for Connect with flexible hose to inlet on pump unit. hose connector Max.
Page 59
Technical Specifications JT-50 Compact Pump head in position II 60mm 210mm 243mm P-115-58: Straight pump outlet P-513-58: 90 pump outlet P-507-58: 2-way pump outlet 2 options for Water inlet assembly: hose connector Connect with flexible hose to inlet on pump unit. on pump outlet: Max.
Page 61
firmly and secure in place. Because the pump head is close to the hull, the Jet Thruster Vertical is an ideal Jet Thruster for boats with shallow draft such as Waterskiing and wakeboarding boats.
Page 62
Note: If you do not place the pump head below the water line, the Jet Thruster system will not work: Check the boat to find the waterline! It’s possible to position the pump under an angle. In many cases this is the only option.
Page 63
Insert tool in water inlet and use wrench to srew inlet in place - Thoroughly clean all parts, threads and surfaces with Acetone. - Test fit the modified Water Inlet in the pump head, but be careful not to damage the pump head threads - Apply sufficient Sikaflex 291i / PU Sealant to all parts as indicated in the picture Have one person present inside the boat who will hold on the Pump assembly Have one person present outside the boat to continue with the following steps:...
Page 64
Technical Specifications JT-70 Pump head in position I Ø 76mm / 3” Ø 76mm / 3” Ø 76mm / 3” 100x100mm / 3.94”x 3.94” 100x220mm / 3.94”x 8.66” 100x220mm / 3.94”x 8.66” P-242-00: Straight pump outlet P-222-00: 90 pump outlet P-259-00: 90 pump outlet Water inlet assembly:...
Page 65
Technical Specifications JT-70 Pump head in position II Ø 76mm / 3” Ø 76mm / 3” Ø 76mm / 3” 100x100mm / 3.94”x 3.94” 100x220mm / 3.94”x 8.66” 100x220mm / 3.94”x 8.66” P-242-00: Straight pump outlet P-222-00: 90 pump outlet P-259-00: 90 pump outlet Water inlet assembly:...
Page 66
JTV-70-50 24V 70Kgf 248,2 328,4 298,2 335,2 UNLESS OTHERWISE SPECIFIED: DIMENSIONS ARE IN MILLIMETERS JT-70 vertical Ra 3.2 0.03 0.03 ANGLES IN DEGREES - TOLERANCES ±0.2mm ±1º - BREAK ALL EDGES Drawn by : Toofan Pour Part No. D-010-10C Holland Marine Parts Scale Drawn date Customer...
Page 67
Technical Specifications JT-90 Pump head in position I Ø 76mm / 3” Ø 76mm / 3” Ø 76mm / 3” 100x100mm / 3.94”x 3.94” 100x220mm / 3.94”x 8.66” 100x220mm / 3.94”x 8.66” P-242-00: Straight pump outlet P-222-00: 90 pump outlet P-259-00: 90 pump outlet Water inlet assembly:...
Page 68
Technical Specifications JT-90 Pump head in position II Ø 76mm / 3” Ø 76mm / 3” Ø 76mm / 3” 100x100mm / 3.94”x 3.94” 100x220mm / 3.94”x 8.66” 100x220mm / 3.94”x 8.66” P-242-00: Straight pump outlet P-222-00: 90 pump outlet P-259-00: 90 pump outlet Water inlet assembly:...
Page 69
JTV-90-50 24V 90Kgf 335,2 UNLESS OTHERWISE SPECIFIED: DIMENSIONS ARE IN MILLIMETERS JT-90 vertical 1 0.03 0.03 Ra 3.2 ANGLES IN DEGREES - TOLERANCES ±0.2mm ±1º - BREAK ALL EDGES D-010-10C Holland Marine Parts Drawn by : Toofan Pour Part No. Scale Drawn date : 21-04-2017...
Page 70
JT70 / JT90 Vertical pump position 542mm Sikaflex 291i Hull 100% flat and preferable horizontal Sikaflex 291i Dc motor, 11 / 15.5Kw P-319-00 Seal I-604-00 Intermediate Flange Water I-618-01 Hexagon cylinder bolt M10x35 F-210-00 Water inlet I-616-00 Hexagon socket countersunk head M10x50 F-222-00 Seal Pump outlet P-260-00...
Page 71
Position of pump unit: - Select a perfect flat position for the pump unit. If not flat, the hull must be made flat - Select a horizontal position. Pump motor must be in vertical position. - Pump unit must be placed below the waterline - Pump unit must be fixed to the interior.
Page 75
C: position of nozzles Note: The Jet Thruster is most efficient when the connections between system components made with the included pressure hoses are as short as possible. Place the pump unit and the 3-way valve as close to the nozzles as possible to achieve this.
Page 76
Holland Marine Parts advises to place suitable battery’s directly next to the pump unit in order to keep the battery cabling as short as possible! The jet thruster uses a lot of electrical energy in a short period of time.
Page 77
Pump head position and pump outlets can be changed. Contact your dealer or Holland Harine Parts for additional information. Longitudinal placement: For longitudinal placement attach the 90° hose connector + rubber seal to the pump head. P-513-58 Pump head position I 2”...
Page 78
• Can be placed above or below waterline in any position Jet Thruster Combi: Dirt or sand that drift in the ocean can build up in the system, this will be flushed out during use. The function of the 3-way valve allows for an amount of water flowing through, even when the valve is not in use.
Page 79
C: Position of the nozzles • Based on the type of hull you have chosen a certain nozzle type. Select this nozzle type and the corresponding installation instructions from the below scheme. Please note: Nozzles JT 30 and JT 50 are equipped with an internal Venturi. Do not damage or remove this constriction! Weldable Part number Diameter...
Page 80
Use the included 45 degree elbows in order to place the nozzles as far as forward or aft as possible. In case of application as a stern Jet or in case of Jet Thruster Combi: place the system as far as possible to the stern.
Page 81
Nozzle positions and installation options Note: The standard installation kit provides 1 x 2” 45 elbow. Additional parts must be ordered separately. Note: If you do not need the 45 elbow in your installation: do not use it. I-361-00 1 x 2” BSP 45 elbow to each nozzle.
Page 82
Installing Composite nozzle’s 1. Drilling and preparing of thru-hull nozzle 1.1 Drill 65mm hole Section of boot hull 1.2 Smooth corner with sandpaper 1.3 clean both sides of the thru-hull area with acetone or breakcleaner. This area needs to be completley grease free. 2.
Page 83
This amount of thread is needed for the ball valve or 45 degree elbow. JT-70 & JT-90 assambly Final assambly of a JT-70 & JT-90 Jet Thruster. Nozzle with guide rings & spacers, composite 2’’ ball valve and hose connector.
Page 84
Installing the nozzles and water intake. In case of steel or aluminum vessel plating weldable nozzles are available. Learn more at: For polyester and wooden vessel plating flange threaded nozzles are available. www.youtube.com/user/hollandmarineparts 1: Place vessel horizontal. Select optimum position for nozzle: As far to the front of bow or stern as possible, top side of nozzle 10cm / 4”...
Page 85
7: Outside of vessel: Weldable nozzle: Weld in the nozzle and cut of remaining length. Smoothen surface. Note: Do not cut into, or cut away the internal restriction within the nozzle! Flange treaded nozzle: In case of an rough or not entire flat surface: Apply sealant for maritime purposes: Sikaflex-291i / 3M 5200 adhesive / sealant on the side of the flange of the nozzle that contacts the vessel plating.
Page 86
Remove fouling as soon as possible. Keep surfaces clean. Do not scratch the surfaces with metal tools. Run the Jet Thruster system: By using the Jet Thruster System you clean it and fresh oxygen-rich water ensure formation of the protective film Option 2:...
Page 87
Cathodic Protection: Connect the optional Zinc Anode System to the Jet Thruster Pump Unit to protect Stainless Steel parts from corrosion. Parts: • Anode must be inspected / replaced when worn out. • JT30/JT50: CP-001-00 • Verify no live battery cables or live + cables make contact •...
Page 88
In this case clean the stainless steel surface with household mineral bath and tile cleaner. - Important: Never use Steel Wool or any other metal parts or tools on the stainless steel Jet Thruster parts and surfaces.
Page 89
Cathodic Protection of Stainless steel nozzles - CP-010-00 Incl.: - Disc anode Ø90mm • Anode must be placed close to bow or stern nozzles. - Bolt M8 / nut / washers • Do not paint the Anode. - Cable assembly Remove the antifauling Drill and cut thread M8 Use Sikaflex to seal the bolt M8...
Page 90
• Verify no live battery cables or live + cables make contact to Stainless Steel parts at any time! Cable set to metal motor flange Cables are included with zinc anode P-156-00 CP-001-00 Zinc Anode Optional pump outlets JT-30 JT-50 € 62,- P-156-00 P-156-00 Pump outlet threaded € 47.- P-142-52...
Page 91
Pump outlet zinc anode JT70/JT90 Option 1 Cable set to water inlet and flange Cables are included with zinc anode € 175.- CP-002-00 Zinc anode JT70/JT90 Pump outlet € 56.- CP-006-00 Replacement Zinc anode JT70/ JT90 Water inlet zinc anode JT70/JT90 Cable set to water inlet and flange Cables are included with zinc anode Option 2...
Page 95
4. EU Declaration of Conformity (no.17K001) Jet Thruster controller Manufacturer Karyvo Adress Zeilmakersstraat 3a 8601 WT Sneek The Netherlands Declare under our sole responsibility that: Product: Multifunction Controller for Marine Applications type: Jet Thruster Controller Is in conformity with the relevant Union harmonization legislation:...
Page 103
GENERAL COMMERCIAL TERMS AND CONDITIONS General Commercial Terms and Conditions of Holland Marine Parts B.V. Donker Duyvisweg 297 3316 BL Dordrecht The Netherlands Applicability of the Present General Terms and Conditions 1. The present General Terms and Conditions shall apply to all offers and to all agreements concerning engines, machines and components. Unless the opposite appears explicitly, the present General Terms and Conditions shall equally apply to the assembly, disassembly, repair and other activities.
Page 104
IV Delivery and Delivery Period 1. Goods shall be delivered at our enterprise in Dordrecht (ex Works). Delivery periods shall be determined approximately. 2. The delivery period shall commence when we have confirmed the order in writing, when all formalities required to start the activities have been complied with, when all necessary documents are in our possession and when the contracting party has provided us with all the data concerning the order.
Page 105
5. The contracting party shall have to forthwith inform us of shortcomings or defects to repairs or deliveries that have been discovered, at any rate not later than three working days from the day the shortcoming or defect was discovered, and to do all that is necessary to limit the damage, all this under penalty of the loss of any right to damages or warranty..
Page 106
6. If the contracting party is in default with the payment, it shall be deemed to be in default by operation of law and we shall have the right without any notice of default, to charge an interest on the entire amount due still outstanding, equalling the statutory commercial interest increased by 3% on an annual basis commencing on the date the payment concerned becomes due and payable, or, in the case of instal- ments, commencing on the day the term of the instalment concerned expires, and furthermore to recover all collection costs, both the judi- cial and extrajudical costs, from the contracting party, all this without prejudice to the other rights vested in us.
Need help?
Do you have a question about the JT-30 and is the answer not in the manual?
Questions and answers