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SECTION 7 -
PLUMBING
10. Turn the Winterization valve so it points
toward the waterline to the water pump.
This will stop the flow from the antifreeze
siphon tube and revert the tank line flow to the
water pump.
11. Replace the protective cap onto the end of the
antifreeze siphon tube to keep out insects and
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 motorhome
(requires socket and ratchet).
Water Heater Drain Plug
(Remove with socket)
CAUTION
Hot water can escape from tank causing
injury. Operate relief valve or remove
drain plug only when the tank water is
cold.
• Also, open the Pressure-Temperature Relief
valve at the top right portion of the tank to
prevent air locking in the tank while
draining.
7-18
Pressure-Temperature Relief Valve
(Lift handle only when water heater is cold)
14. Reinstall the water heater drain plug and close
the P-T Relief valve when drained.
Drain Optional Appliances
15. At this time, if your motorhome is equipped
with an optional refrigerator ice maker, the
waterlines for that must also be drained.
(See "Winterizing Optional Appliances"
instructions at the end of this section.)
If not, proceed to the next numbered step.
Fill Drainage System P-Traps
16. 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 motorhome during storage.
Dump and Clean Holding Tanks
17. 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 sewage drain
hose.
18. 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.
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