Contents, specifications and availability are subject to change without notice.
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WAECO USA, Inc.
17
Preferred Arrangement
UN
acceptable Alignment
Acceptable Arrangement
Overboard Discharge
Compressor
Water Line
Water Line
Continuous
Rise
Vented
Line
Cockpit
Drain
Air Lock
Discharge
Inlet
Base Vertical Discharge
Points UP
Base Horizontal Discharge
is approx. Horizontal
WATER COOLED OPTION INSTALLATION
Please refer to the diagrams below.
Basic rules for a good installation.
1.
The pump must be at least 1 foot below waterline at all
times (regardless of which tack you are on).
2.
The pump orientation must be as pictured—no other
positions will work.
3.
The strainer should be mounted with the bowl pointing
downward, otherwise, it will trap air and possibly
airlock the water pump.
4.
Inlet thruhull must not be “shared” with any power-driven
pump and absolutely not the engine’s intake! you may
“tee-off” a toilet inlet, cockpit drain, galley seawater foot-
pump line, etc., provided that the seacock is at least 2”
below the waterline.
5.
Inlet thruhull must have a “scoop” facing forward on the
outside of the hull to prevent “back siphoning.” At high
sailing speeds, the flow direction may reverse, introducing
air into the pump and damaging it. Failure to provide this
scoop is the major cause of pump failures.
6.
Heeling can obviously be a problem since the pump may be
well below the waterline at rest or on one tack, but not on
the other. Traps and airlocks may also be created when the
boat is heeling. In most cases, the positive “ram effect”
created by the outside hull inlet scoop will overcome these
problems. This is another reason why the scoop is so
important.
7.
Overboard thruhull (supplied) must be above the waterline—
so you can verify pump operation.
8.
Total hose length must not exceed the 15 feet furnished.
9.
Total lift (example: highest point of piping above pump)
must no exceed 5 feet.
10. No “traps” allowed! This means no “dips” in hoses. They
must run level or steadily uphill from inlet to strainer to
pump to highest point. To simplify, if you picked the boat up
in slings, the entire water circuit (except for strainer
contents) must drain through the inlet thruhull.
NO OTHER
POSITIONS ARE
PERMITTED!