7-13
SECTION 7 –
PLUMBING
Fill Drainage System P-Traps
12. Pour about one cup of RV antifreeze down
each drain for the galley sink, lavatory sink,
and shower/tub. This fills the drain trap pipes
to prevent holding tank odors from entering
the coach during storage.
Dump and Clean Holding Tanks
13. Completely drain the sewage and waste water
holding tanks at an approved waste disposal
site. Drain the sewage tank first so the
following waste water can rinse any waste
solids from the dump outlet and sewer hose.
14. Close dump valves and refit the dust cap onto
the drain outlet.
This will inhibit rust formation on valve shafts
and prevent entry and contamination by
airborne debris, insects, and rodents.
Your drainage and fresh water systems are
now winterized.
See instructions for removal from storage in
Section 11 - Maintenance and Storage.
Water Heater (Tankless) Power
Switch
WATER SYSTEM DRAIN VALVE LOCATIONS
Model
System
Drain Valve Locations
23B
Waterlines
Open drain valves under removable panel in lavatory.
Water Tank
Valve behind vent on face of galley.
Winterization
(Antifreeze) Valve
Beneath pantry cabinet. Open lower cabinet door to access.
23L
Waterlines
Open drain valves in rear passenger storage compartment.
Water Tank
Valve under removable panel in galley.
Winterization
(Antifreeze) Valve
In rear passenger side storage compartment.
