7
RAW WATER
PUMP
Dometic 8100 Series MasterFlush Toilet Installation
5 Installation
5.1 Fresh water system layout
5.2 Raw water system layout
Note
Use cold water only. Include shut-off valve in water line for maintenance purposes.
Notes
Use cold water only. Include shut-off valve in water line for maintenance purposes.
Use primary and secondary raw water lters.
Raw water pump MUST NOT be demand-type. Pump is controlled by ush switch.
Install vented loop as shown. It must be equipped with integral check valve that permits air into line to
prevent siphoning.
Dometic macerator toilets can operate with an
onboard pressurized freshwater system with a
minimum ow 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
anywhere in the piping system is opened.
Dometic macerator toilets can ush on seawater but require a separate pump for this purpose. The
pump is activated by the signal from the toilet’s ush switch. If the raw water pump draws more
than 18 amps of current, a 12 or 24 V DC electrical relay must be installed.
Dometic 8100 series toilets are equipped with
an electrically operated water valve and an
in-line check valve to prevent contamination of
onboard potable supplies.
5
6
VENT
FITTING
SEACOCK
VENT
FILTER
DISCHARGE
PUMP
DECK
DISCHARGE
“FULL” LEVEL
PROBE (opt.)
MACERATOR
TOILET
MACERATOR
TOILET
FLUSH
SWITCH
PANEL
FLUSH
SWITCH
PANEL
0.5 in./13 mm
FRESH WATER
HOSE
0.5 in./13 mm
WATER HOSE
0.625 in./16 mm HOSE
1 in./25 mm HOSE
SEACOCK
TO SUCTION SIDE OF
RAW WATER PUMP
FINE WATER FILTER
(100 MESH)
SMALL ENGINE INTAKE STRAINER (COARSE)
WATER LINE
HOLDING TANK
(cut-away view)
VENTED LOOP/CHECK VALVE
Must be 8 in./203 mm above water
line during all conditions of heel,
trim or load
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