SECTION 7 –
PLUMBING
7-18
11.
For Tankless Water Heater Only: Turn
Winterization Valve 3
from “Normal”
position to “Line Drain” position to allow
water and antifreeze to flow through the
recirculation line.
•
Turn Water Pump switch OFF.
•
Turn Winterization Valve 3
to “Water
Heater & Line Drain” position to allow all
remaining water and antifreeze to leave the
system. Leave the valve in this position until
the Winterization process is complete or the
system is placed back in use.
NOTE: See the tankless water heater operator’s
manual located in your InfoCase for
additional draining procedures.
When Done Adding RV Antifreeze
12. 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.
13. 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
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 motorhome during storage.
Dump and Clean Holding Tanks
15. 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.
16. 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. Remove Ice Maker Drain Line from exterior
Residential Refrigerator service compartment
and allow to hang loose on outside of vehicle.
*Models 34T, 38F, 38W and 38D
*Model 36H
