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SECTION 7 –
PLUMBING
7-22
Refer to the “Water System Drain Valve
Locations” chart at the end of this
section for valve locations on your
model.
Fill Lines
10. Turn the Water Pump switch ON.
11. 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).
12. Press the toilet flush pedal (or electric wall
switch, if your coach is equipped with an
electric flush toilet) and hold until antifreeze
begins flowing into the toilet.
Leave a small amount of antifreeze that
remains in the bowl.
If your coach is not equipped with a tankless
water heater continue to Step 14.
13.
For Tankless Water Heater Only: Turn
Winterization Valve 3
from “Normal”
position to “Line Drain” position to allow hot
water and antifreeze to flow through the
recirculation line. Close the valve when
antifreeze is present at drain line below coach.
When Done Adding RV Antifreeze
14. Turn Water Pump switch OFF.
15. 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.
16. Replace the protective cap onto the end of the
antifreeze siphon tube to keep out insects or
debris when not in use.
Fill Drainage System P-Traps
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 winterized.
See instructions for removal from storage in
Section 11 - Maintenance and Storage.
To Winterize the Waste Pump
(Macerator) on Gray Tank
–If Equipped
1. Ensure that black and gray holding tanks are
completely empty.
2. Elevate the front of the coach to help
minimize the amount of antifreeze required to
prime the macerator pump.
3. Pour 2 gallons of RV antifreeze down the
shower or galley sink drain. (Not lavatory
sink)
4. Remove drain outlet cover.
5. Press and hold the Waste Pump switch for
approximately 5-10 seconds to get antifreeze
into the pump. Stop when antifreeze comes
out of drain outlet.