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2. Installation
2.3 Water intakes
The necessary hydraulic intakes are:
•
Seawater intake
It is ideal a specific sea water intake, size ¾” min. in a central position, well under the water
surface even when the vessel is well heeled over.
The skin fitting is recommended. It must be oriented to the bow of the boat.
As alternative it is possible Tee into an water inlet as long as the following conditions are met:
- 3/4” minimum size,
- No air can be introduced into the system from other use ie: salt water tap in galley
-Must always be under the water surface even when the vessel is well heeled over.
Allow a minimum ½” on-off ball valve on the water intake. The hose connections, especially if
under the seawater level, must be secured with double hose clamps.
It is not advisable to Tee into the engine cooling water intake as it may impair the cooling of the
engine. An easily inspected mesh type filter will be required close to the water intake. The filter
has to be of 50 microns. It is possible to use filters from existing outlets.
•
Fresh water intake for washing.
Tee in downstream of the vessel's fresh water pressure system (Domestic water from tank) .
IMPORTANT
Flushing must always be carried out with the pressure water system ON.
The pressure water system must NOT exceed 2.5 BAR.
•
Salt-water waste. (After passing through the watermaker)
The salt-water reject fitting must be ½” minimum and preferably above the seawater level.
Again, if required you can tee into an existing skinfitting ie: sink water out, one way valves may
need to be considered. The watermaker waste pipe must be unobstructed when the machine is in
use.
