Pro-Line Boats 29 Grand Sport Owner's Manual page 35

system comes equipped with a 7-gallon holding tank, macerator pump, diverter valve ("Y" valve) and
switch panel, and uses sea water for flushing.
The flush control button and switch panel are installed on
the aft wall of the head area. The flush control button
operates the head, allowing you to flush the waste. The
switch panel has switches for the head and the head
macerator pump. To flush the toilet, first, move the head
switch to the on position. Then press the round button
labeled "Press to Flush". This action empties the head
waste into the holding tank.
The head macerator pump, "Y" valve, holding tank and brass seacock are all installed below the sink area
in the head.
The head macerator pump is used in the overboard discharge operation. The "Y" valve must be in the
correct position to direct the waste either overboard or to your marina's dockside discharge facilities.
Before utilizing the dockside or overboard discharge functions, make certain that the "Y" valve is in the
correct position.
Before attempting to flush the toilet, make sure that the seacock is in the open position. The seacock is
open when the yellow lever is in the full upright position. When the lever is in the horizontal position, the
seacock is closed.
The "Y" valve is installed on the port side of
the pump, just outside the view of the photo
to the right. It allows you to switch back
and forth between dockside and overboard
discharge. The photos below show the 2
positions for the "Y" valve (i.e., dockside
discharge vs. overboard discharge).
Dockside Discharge - When at a marina that offers dockside
discharge, the marina will provide the external facilities needed to
perform the dockside discharge operation. To operate the dockside
discharge, turn the "Y" valve to the dockside discharge position as
shown here.
The "Y" valve for the Electric Head as shown here is set to use
dockside discharge. Follow the arrows. Waste is going from the
holding tank, to the "Y" valve and then upward to the waste outlet.
The waste outlet is a stainless steel fitting, labeled waste. It is located amidships on the starboard
gunwale. Twist the waste outlet cap to open the fitting and insert the hose provided by the marina into
the waste outlet to connect to your marina's dockside service facilities. Follow the instructions provided
by the marina to operate their equipment.
Warning: Waste in the holding tank can form methane, an explosive gas. Use suitable
precautions when any maintenance is done to the sanitary system.
Electric Head
Pump
Push to Flush
Switch Panel
Seacock
Waste tank
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