SECTION 7 –
PLUMBING
7-14
• 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.
Fill Drainage System P-Traps
11. 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
12. 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.
13. Close dump valves and refit the dust cap onto
the sewage 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 on driver
side of coach ahead of rear wheel) to drain any
gray water trapped in the drain line. Remove
with socket/wrench.
•
Pour about one cup of RV antifreeze down the
toilet and either the bathroom or kitchen sink.
•
Press and Hold the Waste Pump switch for
approximately 5-10 seconds to get antifreeze
into the pump.
Water Heater Drain Plug
(Remove with socket)
Pressure-Temperature Relief Valve
(Lift handle only when water heater is cold)
Waste Pump Drain
(Located on driver side of coach
ahead of rear wheel)
* Model 26Q only
