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Installation
5
Installation
5.1
Fresh water system layout
SeaLand macerator toilets can operate with an
onboard pressurized freshwater system with a
minimum flow rate of 2 .0 gpm (7 .6 lpm) at the
toilet . Onboard fresh-water demand systems
include a water pump that automatically draws
water from a water storage tank when a valve
8
VENT
FITTING
SEACOCK
Note
Use cold water only . Include shut-off valve in water line for maintenance purposes .
5.2
Raw water system layout
SeaLand macerator toilets can flush on seawater but require a separate pump for this purpose . The
pump is activated by the signal from the toilet's electronic control module that would operate the
integral water valve in a fresh water system . If the raw water pump draws more than 18 amps of
current, a 12 or 24 V DC electrical relay must be installed .
9
1 in./25 mm HOSE
SEACOCK
Notes
Use cold water only . Include shut-off valve in water line for maintenance purposes .
Use primary and secondary raw water filters .
Raw water pump MUST NOT be demand-type . Pump is controlled by control module .
Install vented loop as shown . It must be equipped with integral check valve that permits air into line to
prevent siphoning .
8
DECK
DISCHARGE
DISCHARGE
PUMP
VENT
FILTER
HOLDING TANK
(cut-away view)
VENTED LOOP/CHECK VALVE
Must be 8 in ./203 mm above water
line during all conditions of heel,
WATER LINE
0.625 in./16 mm HOSE
TO SUCTION SIDE OF
RAW WATER PUMP
FINE WATER FILTER
(100 MESH)
SMALL ENGINE INTAKE STRAINER (COARSE)
anywhere in the piping system is opened .
SeaLand toilets are equipped with an electrically
operated water valve and an in-line check valve
to prevent contamination of onboard potable
supplies .
CONTROL
"FULL" LEVEL
MODULE
PROBE (opt.)
0.5 in./13 mm
FRESH WATER
HOSE
trim or load
RAW WATER
PUMP
SeaLand MasterFlush Toilet
CONTROL
MODULE
0.5 in./13 mm
MACERATOR
WATER HOSE
FLUSH
SWITCH
MACERATOR
TOILET
FLUSH
SWITCH
TOILET
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