Cal Boats CAL 27 Mk III Owner's Manual - Plumbing
30 PLUMBING
PLUMBING
Heads—Cal 27, Cal 9 .2, Cal 31, Cal 35, Cal 39
Cal has passed along the manuals which cover the operation and maintenance of the
toilets installed in your yacht . You should read these and familiarize yourself and crew with
their details .
The standard head is a marine toilet, connected to a collapsible rubber holding tank . This
tank is discharged through a line running to a deck outlet . To empty the tank, open the deck
outlet and insert a dockside pump .
The optional head installation allows the holding tank to be discharged overboard or at
dockside . The choice of method is controlled by a valve system on the discharge side of the
holding tank .
For dockside discharge, open the dockside line and deck fitting and insert the dockside
pump .
FOR OVERBOARD DISCHARGE, CLOSE THE DOCKSIDE LINE AND OPEN THE OVERBOARD
LINE AND THRU-HULL SEACOCK . IN THE DISCHARGE LINE IS A DIAPHRAGM PUMP . THIS
WILL DISCHARGE THE HOLDING TANK THROUGH THE THRU-HULL .
FEDERAL AND STATE LAWS AND USCG REGULATIONS SHOULD BE CONSULTED
REGARDING THE DISCHARGE OF HEADS IN CONTROLLED WATERS .
When not discharging the tank, both the dockside and overboard lines should be closed .
Also, be sure to close the thru-hull seacock, when not in use . It is recommended that a chem-
ical additive, such as is used in chemical heads, be pumped into the holding tank to prevent
odor permeation of the tank and plumbing .
Refer to the manufacturer’s instructions for maintenance and operation of the toilet .