INSTALLATION
MANUAL
Product: Document #: Rev: Page:
SEAKEEPER 6 90402 1 3 of 5
Section 3: COOLING INSTALLATION
3.1 Precautions
Installer is responsible for supplying a dedicated sea water pump and associated
plumbing. Sea water connections on the heat exchanger mate with ¾ inch (19 mm) hose.
There is no need to disconnect hose from glycol pump except to replace the pump. In this
case, provision will need to be made to catch draining glycol as plumbing is disconnected.
Use caution to avoid breaking plastic hose connections on pump casing.
An output is available from motor drive to power and automatically control seawater pump.
This pump must operate on 110-230 VAC single phase and consume less than 5 amps.
Pumps requiring other voltages or higher current can still be controlled by using this supply
from motor drive to trigger an installer-supplied contactor but a separate source of power
must be provided.
Maximum sea water pressure in heat exchanger is 20 psi (1.4 bar)
Seawater flow requirement through heat exchanger is 4 GPM (15.1 LPM) minimum
and 8 GPM (30.3 LPM) maximum under all operating conditions of the boat. When
sizing sea water pump, installer should factor in losses for raw water plumbing. In addition
to initial operation at dock, new installations should be checked to be within the flow
requirements while vessel is at speed. Flows higher than 8 GPM (30.3 LPM) could affect
heat exchanger life.
3.2 Adding Coolant
1) Cooling system is filled to proper
level when shipped, with a
mixture of 50% ethylene glycol
and 50% distilled water. Clear
tube between thermostat housing
and reservoir should be filled with
green coolant mixture. 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 sea water connection in
section 3.3.
FIGURE 3 – SEAKEEPER 6 COOLANT LEVEL
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