Dometic 4806 Benutzerhandbuch

9

Discharge piping layouts
VacuFlush toilets must be connected to 1.5-inch (38mm) ID flexible sanitation hose. Connections can be made 

either through the floor or out the rear of the toilet above the floor.
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 or 

VacuFlush product dealer.

Vented loops
Ventilated or vented loops are intended to prevent back siphonage of sea water 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-in. (203 mm) above the toilet water line in all such conditions.  See vented loop fitting 

manufacturer’s recommendation for further information.

Flush 

Switch

Vacuum 

Toilet

Wye 

Valve

Problem 

Hose

Holding Tank

Discharge 

Pump

Problem 

Hoses

Seacock

Seacock

Discharge 

Pump

Problem Hose 
must use rigid 

PVC pipe or 

OdorSafe Plus 

hose

Holding Tank

Vacuum 

Generator

Vacuum 

Toilet

Flush 

Switch

Vacuum 

Generator

Vacuum 

Toilet

Seacock

Flush 

Switch

Vented loop must be at least 8 inches 

[203mm] above water line during all 

conditions of heel, trim or load.

Water Line

Heeled W

ater Line

Vacuum 

Generator