SECTION 7 –
PLUMBING
7-18
Fill Lines
5. Turn the Water Pump switch ON.
6. 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.
7. Press the toilet flush pedal (or the “Normal
Flush” button on the wall control, if your
coach is equipped with an electric flush toilet)
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 the Water Pump switch OFF.
9. Turn the Winterization Valve 2 to “Normal”.
This will stop the flow from the antifreeze
siphon tube and revert the tank line flow to the
water pump.
10. Replace the protective cap onto the end of the
antifreeze siphon tube to keep out insects and
debris when not in use.
Drain Appliances
11. At this time, if your coach is equipped with a
refrigerator ice maker, dishwasher, or washer/
dryer, the waterlines for these appliances must
also be drained. (See “Winterizing Optional
Appliances” at the end of this section).
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 sewage drain outlet and sewer
hose.
14. Flush the sewage tank using the Black Waste
Tank Flush Inlet.
15. 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.
WINTERIZING OPTIONAL
APPLIANCES
Winterizing Ice Maker
(Residential Refrigerator)
1. Shut off water supply to the Ice Maker and/or
water dispenser. The water supply valve is
located inside a galley cabinet near the filter.
2. Remove Ice Maker Drain Line from exterior
Residential Refrigerator service compartment
and allow to hang loose on outside of vehicle.
3. Turn Ice Maker Winterization Drain valve to
the OPEN position.
Ice Maker Drain Line
(Located in exterior Residential
Refrigerator service compartment)
