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7-15
SECTION 7 –
PLUMBING
11. Replace the protective cap onto the end of the
antifreeze siphon tube to keep out insects or
debris when not in use.
Drain Water Heater
12. Turn off the Water Heater Power switch
before draining the water heater tank to avoid
damage to the heating element.
13. Drain the water heater by removing the plug
from the base of the water heater tank,
accessible from the outside of the coach
(requires socket and ratchet).
14. Open the Pressure-Temperature Relief valve
at the top right portion of the tank to prevent
air locking in the tank while draining.
15. Reinstall the water heater drain plug and close
the P-T Relief valve when drained.
Close All Drain Valves
16. Close all waterline drains and tank drain
valves to avoid contamination by dirt, insects,
or rodents.
17. 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
18. 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.
19. 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
completely winterized. See instructions for
removal from storage in Section 11 -
Maintenance and Storage.
Water Heater Drain Plug
(Remove with socket)
Pressure-Temperature Relief Valve
(Lift handle only when water heater is cold)