3.4 Seawater Pump Power Connections

---

DC Seawater Pump Power Source Requirements

1. One 12 VDC, 15 A (Customer supplied) for DC Seawater Pump.
   
   • OPTIONAL: Seakeeper 4.5 may use one 24 VDC, 10 A (Customer supplied) source for the DC Seawater Pump.
2. A dedicated breaker should be used for each 12 VDC load on the Seakeeper: one breaker for Control Power and one breaker for Seawater Pump power (Drawing No. 90696 and 90699).
3. A dedicated breaker should be used for each Seakeeper‘s Control and Seawater Pump power if multiple units installed.

---

DC Seawater Pump Input Power Connection

1. Install Seakeeper provided DC Seawater Pump Input Cable, P/N 30327 (as shown in Drawing No. 90696 and 90699).
   
   1. Route Seawater Pump Input Cable to DC Power Distribution Panel.
   2. Terminate 16 AWG positive (B+, Red) conductor through 12 VDC dedicated overcurrent protection device (customer supplied), maximum of 15 A, to dedicated battery isolation switch.
      
      • 24 VDC, 10 max can be used for Seakeeper 4.5 Seawater Pump power.
   3. Terminate 16 AWG negative (B-, Black) conductor directly to battery negative terminal or DC main negative bus bar.
2. Before connecting Seawater Pump Input Cable to Seakeeper wire harness (at “SW PUMP VDC IN”), check for proper voltage and polarity with a multimeter using figure below.

3. Connect Seawater Pump Input Cable to “SEAWATER IN” connector on the Seakeeper wire harness Deutsch DT04-2P connector.

---

DC Seawater Pump Output Power Connection

1. Connect Seawater Pump Output cable (P/N 20334) to the Seakeeper 4.5 “SW PUMP VDC OUT” connector.
   
   1. The Seawater Pump Output cable is a 2 X 16 AWG cable, 16 ft (5 m) length, with a size 16 female Deutsch plug.
2. Pumps rated at 12 VDC, 15 A maximum (24 VDC, 10 A), customer-supplied, must be configured with a Deutsch DT series, 2-pin receptacle to mate with the connector shown in figure below.

3. The Seawater Pump Output cable must be routed and installed in the vessel from the Seakeeper “SEAWATER OUT” connector (male) to the DC seawater pump cable Deutsch connector (female).
4. Connect Seawater Pump Output cable plug (female) to the customer-supplied receptacle (male). The recommended wiring is shown in figure below.
5. Contact Seakeeper if desired to install customer-supplied relay on Seawater Pump Output cable to power Seawater Pump.