SECTION 7 –
PLUMBING
7-12
NOTE: Ensure that all drain valves are
CLOSED before pumping RV antifreeze
into the water system.
Refer to the “Water System Drain Valve
Locations” chart at the end of this
section for valve locations on your
model.
Fill Lines
4. Turn the Water Pump switch ON.
5. Open each hot and cold water faucet handle/
knob in the coach – one at a time each in turn
until antifreeze solution just begins to flow
from the faucet, then close.
Do not forget exterior shower/wash station
knobs (if equipped).
6. 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
7. Turn Water Pump switch OFF.
8. Turn the Winterization valve so it points
toward the waterline connected to the water
pump.
This will stop the flow from the antifreeze
siphon tube and revert the tank line flow to the
water pump.
9. 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
10. Turn off the Water Heater power switch
before draining the water heater tank to avoid
damage to the heating element.
11. Drain Water Heater (Tankless). Turn off the
Water Heater Power switch before draining
the water heater and let the water drain
through the system.
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
Antifreeze Siphon Tube and
Winterization Valve
(See Water System Drain Valve chart at the
end of this section for location on your coach)
-Model 23B shown
Antifreeze Siphon Tube
• Insert into container of RV water system antifreeze.
Winterization Valve
• Point toward antifreeze siphon tube for winterizing.
Water Heater (Tankless) Power
Switch
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