Winnebago Via 25Q Manual page 79

When Done Adding RV Antifreeze
8. Turn the Water Pump switch OFF.
9. 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.
10. 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
11. Turn OFF the Water Heater Power switch
before draining the water heater tank to avoid
damage to the heating element.
12. 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).
Water Heater Drain Plug
(Remove with socket)
13. Open the Pressure-Temperature Relief valve
at the top right portion of the tank to prevent
air locking in the tank while draining.
Pressure-Temperature Relief Valve
(Lift handle only when water heater is cold)
14. Reinstall the water heater drain plug and close
the Pressure-Temperature Relief valve when
drained.
Fill Drainage System P-Traps
15. Pour approximately 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
16. Completely drain the 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 sewage drain hose.
17. 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
-If Equipped
• Ensure that black and gray holding tanks are
completely empty.
• Remove Waste Pump Drain (located
underneath rear driver side of coach) to drain
any gray water trapped in the drain line.
Remove with socket/wrench.
SECTION 7 –
PLUMBING
7-17