Dometic 8812 Instruction Manual download pdf (Page 7)

iNsTAllATiON – sysTeM DiAgrAMs (cont’d)

Discharge piping

SeaLand macerator toilets can be connected to

1-1/2-inch (38mm) ID exible sanitation hose or

adapted to 1-inch (25mm) ID hose with a 1-1/2”

x 1” adapter available from a SeaLand product

dealer. Connections can be made either through

the oor or out the rear of the toilet above the

oor.

Flexible hoses that contain sewage from any

marine toilet will create unpleasant odor that

permeates through the wall of the hose. Avoid

this condition by installing the tank in the lowest

position in the boat so that hose contents will drain

into the holding tank. Rigid PVC pipe can also be

installed in runs that hold trapped sewage. The

marine sanitation hose most resistant to odor

permeation is OdorSafe Plus

hose, available

from your local SeaLand product dealer.

VenteD lOOps

Ventilated or vented loops are intended to

prevent back siphonage of seawater into the

toilet. If the toilet rim is below the waterline at

ANY time in ANY conditions of heel, load or

trim, a vented loop MUST be installed in the

hose run at a point at least 8-inch (20.3 cm) above

the waterline in all such conditions. See vented

loop tting manufacturer’s recommendation for

further information.

WARNING!

HAZARD OF FLOOD-

ING – If toilet rim is below the

waterline at ANY time (during any

conditions of heel, load or trim)

and is connected to ANY through-

the-hull ttings, properly posi-

tioned ventilated (vented) loops

MUST be installed in intake*

or discharge piping to prevent

potential back siphonage of

seawater into the boat. Failure

to do so can result in ooding

which can cause loss of property

and life.

* if connected to raw water

NOTE: Vertical loops in discharge line of toilet are additive.

Total upward vertical distance must not exceed 9.8 ft. (3 m).

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Dometic 8812 Instruction Manual Page 7

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