INSTALLATION
MANUAL
Product:
Document #:
Rev:
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SEAKEEPER 26 / 20HD
90265
7
2 of 4
Section 3: COOLING INSTALLATION
3.1 Precautions
•
Installer is responsible for supplying a dedicated seawater pump and associated plumbing.
Seawater connections on the Seakeeper 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 box to power and automatically control seawater
pump. This pump must operate on 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 box to trigger an installer-supplied contactor but a separate source of
power must be provided.
•
Maximum seawater 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 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 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
seawater connection in section 3.3.
FIGURE 3
– SEAKEEPER 26 COOLANT LEVEL
Correct Coolant Level
