SECTION 7 -
PLUMBING
7-10
then close.
Do not forget the exterior shower/wash station
knobs (if equipped).
7. Press the toilet flush pedal and hold until
antifreeze begins flowing into the toilet.
Leave small amount of antifreeze that remains
in the bowl.
When Done Adding RV Antifreeze
8. Turn water pump switch off.
9. Turn the diverter valve handle so it points
toward the waterline to the pump (as shown in
previous photo. This will stop the flow from
the suction tube and revert the tank line flow
to the pump.
10. Replace the protective cap onto the end of the
suction tube to keep out insects and debris
when not in use.
Drain Water Heater
11. Turn off the Water Heater power switch
before draining the water heater tank to avoid
damage to the heating element.
12. 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.)
13. Open the Pressure-Temperature Relief Valve
at the top right portion of the tank to prevent
air locking in the tank while draining.
14. Reinstall the water heater drain plug and close
the P-T relief valve when drained.
Drain Appliances
15. At this time, if your coach is equipped with an
optional refrigerator ice maker, dishwasher, or
washer/dryer, the waterlines for these
appliances must also be drained. (See
“Winterizing Optional Appliances”
instructions at the end of this section, if
applicable.)
If not equipped with optional appliances,
proceed to the next step.
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. Flush the sewage tank using the Black Waste
Tank Flush Inlet (if equipped).
Water Heater Drain Plug
(Remove with socket)
Pressure Temperature Relief Valve
(Lift handle only when water heater is cold)
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