Dometic SeaLand 8812 - Manual (Page 6)

6
inSTALLATiOn – SySTEM DiAgRAMS (cont’d)
Discharge piping
SeaLand macerator toilets can be connected to
1-1/2-inch (38mm) ID flexible 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 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 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 fitting 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 fittings, 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 flooding
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).