Installation Manual

7
Dometic 8700 Series MasterFlush Toilet Installation
5 Installation
5.1 Fresh water system layout - marine application
5.2 Raw water system layout - marine application
(additional components required)
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controlmodule.
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2.5gpm(9.5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
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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.
anywhere in the piping system is opened.
Dometictoiletsareequippedwithanelectrically
operatedwatervalveandabackowpreventer
to prevent contamination of onboard potable
supplies.
6
7
VENT
FITTING
SEACOCK
VENT
FILTER
DISCHARGE
PUMP
DECK
DISCHARGE
“FULL” LEVEL
PROBE (opt.)
CONTROL
MODULE
CONTROL
MODULE
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)
RAW WATER
PUMP
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