Installation - Dometic 8700 Series Operation Manuals

Dometic 8700 Series MasterFlush Toilet
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Installation

5.1 Fresh water system layout - marine application
Dometic 8700 series macerator toilets can
operate with an onboard pressurized freshwater
system with a minimum flow rate of 2 .5 gpm
(9 .5 lpm) at the toilet . Onboard fresh-water
demand systems include a water pump that
automatically draws water from a water
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VENT
FITTING
SEACOCK
Note
Use cold water only . Include shut-off valve in water line for maintenance purposes .
5.2 Raw water system layout - marine application (additional components required)
Dometic 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 .
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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 .
DECK
DISCHARGE
DISCHARGE
PUMP
VENT
FILTER
HOLDING TANK
(cut-away view)
VENTED LOOP/CHECK VALVE
Must be 8 in ./203 mm minimum
above water line during all
conditions of heel, trim or load
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)
storage tank when a valve anywhere in the
piping system is opened . Dometic toilets are
equipped with an electrically operated water
valve and a backflow preventer to prevent
contamination of onboard potable supplies .
"3/4" AND
CONTROL
"FULL" LEVEL
MODULE
PROBES (opt.)
0.5 in./13 mm
FRESH WATER
HOSE
RAW WATER
PUMP
CONTROL
MODULE
0.5 in./13 mm
MACERATOR
WATER HOSE
Installation
FLUSH
SWITCH
MACERATOR
TOILET
FLUSH
SWITCH
TOILET
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