7-21
SECTION 7 –
PLUMBING
from the faucet, then close.
Do not forget exterior shower/wash station
knobs and pot filler (if equipped).
8. 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 small amount of antifreeze that remains
in the bowl.
When Done Adding RV Antifreeze
9. Turn Water Pump switch off.
10. 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.
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 (with Tank)
12. Turn off the Water Heater Power switch
before draining the water heater tank to avoid
damage to the heating element.
• 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).
• Also, open the Pressure-Temperature Relief
valve at the top right portion of the tank to
prevent air locking in the tank while
draining.
• Reinstall the water heater drain plug and
close the P-T Relief valve when drained.
Drain Appliances
13. At this time, if your coach is equipped with an
optional refrigerator ice maker or washer/
dryer, the waterlines for these appliances must
also be drained. (See “Winterizing Optional
Appliances” instructions at the end of this
section.)
If not equipped with optional appliances,
proceed to the next numbered step.
Fill Drainage System P-Traps
14. 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.
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.
Pressure-Temperature Relief Valve
(Lift handle only when water heater is cold)
