General Information
2021 Classic 3-11
Waste Water System
The main parts of the waste water system are the
toilet, dual holding tanks, and tank dump valves (see
Section 8 - Maintenance for dump valve information).
The system is designed to provide complete self-
contained toilet facilities, while on the road or parked,
without being connected to a sewage line� It may also
be used in the stationary position while connected to a
sewage hose�
Keep the dump valves closed with either method and
empty the tanks when they are nearly full� The idea is
to send a large volume of water through the tanks and
hose at the same time to oat solids away.
After the sewage tank has been emptied, close the
gate valves and put approximately 5 gallons of water
in the sewage holding tank using the black tank ush
inlet� This will spray the interior of the tank with water
and help prevent solids from building up in the sewage
holding tank� The addition of a deodorizing agent like
Aqua-Kem will help prevent odors�
Should you ever have a buildup of solids, close the
valves, ll the tanks about 3/4 full with fresh water,
drive a distance to agitate the solids, and drain the
tanks�
Things Not To Put Into Toilet Or Drains
• Facial tissues (they do not dissolve like toilet paper).
• Automotive antifreeze, ammonia, alcohols, or
acetone�
• Table scraps or other solids that may clog the drains�
30 ft. Model
1
2
3
BLACK
TANK
VENT
TANK
VENT
1� Galley Drain
2� Lavatory Drain
3� Shower Drain
33FB Model
BLACK
TANK
VENT
2
3
GRAY
TANK
VENT
1� Galley Drain
2� Lavatory Drain
3� Shower Drain
Winter Traveling
Traveling in sub-freezing temperatures will require
certain precautions to protect the plumbing system
and your personal belongings from being damaged by
freezing�
Whenever possible, the heat should be kept set to
a constant temperature� It is easier for the furnace
to keep a constant room temperature than allow the
trailer temperature to drop to 50°F, and then attempt to
raise it to room temperature�
Some states do not allow LPG to be turned on while
moving� While traveling in these states, simply use
your common sense� How cold is it? How long will
it be before you can turn the heat back on? Is the
temperature dropping or rising? Remember, when
towing at 50 MPH, the wind chill factor will cause the
interior of the trailer to cool much faster than a trailer
that is parked�
When parked in sub-freezing temperatures, make sure
to keep a full supply of LPG and plug into an external
AC power source whenever possible�
Leave cabinet doors, wardrobes, and bed doors
partially open to allow warm air to circulate around
plumbing lines and xtures. Insulate and/or wrap your
exterior water lines with heat tape�
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