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D-Series Class-A
8. After water has stopped draining at all faucets
and drain valves, leave faucets open and
connect a "blow-out" plug to the city water
connection on the coach. Then use a
compressed air hose regulated to 30 psi or less
to force air through the system. (A "blow-out"
plug can be purchased at any Winnebago or
Itasca dealer. P/N 701705-01-000.)
City Water
Connection
Blow-out
Fresh Water
Inlet
CAUTION
Limit air pressure to 30 psi to avoid
damage to pump or water lines.
NOTE: DO NOT burst air into the system. This
can damage the water pump. It is better
to let air in slowly.
9. Let air flow for five minutes until water is
completely drained out of faucets and drain
valves. Then close faucets one at a time.
10. Operate and hold toilet flush lever until water
is completely drained from toilet.
11. Turn air pressure off and disconnect water
purge adapters. Recap the city water
connection to avoid contamination by dirt or
insects.
12. Follow procedure listed in "Final Steps..."
Water System Antifreeze
Procedure
NOTE: As an alternative to totally draining the
plumbing system, you may winterize
tanks and lines by pumping non-toxic RV
antifreeze through the system. This
product is available from your dealer and
Air Hose
Plug
from most RV supply stores. Follow
directions on the container to determine
the correct amount to use for your coach.
Your coach is equipped with a manually
operated water line winterization system for your
convenience in winterizing fresh water lines.
The system features a diverter valve with
suction tube to draw non-toxic RV water system
antifreeze into the water lines. There is also a
water heater bypass valve to avoid filling the
water heater with antifreeze. This feature is
located near the water pump in the water center
or utility compartment.
CAUTION
Leave Bypass valve handle in 'Normal
Operation' position if draining water and
blowing out water lines. Place in 'Bypass'
position ONLY when using antifreeze
solution in water lines.
WARNING
NEVER use automotive antifreeze/
coolant in your RV water system. Auto
antifreeze contains ethylene glycol which,
if ingested, can cause blindness and can
be fatal.
•
Turn water heater bypass valve to BYPASS
position.
•
Remove and save the protective cap from the
end of the antifreeze draw tube.
•
Insert the end of the draw tube into a pail or
other container with 2 to 3 gallons of non-
toxic RV antifreeze solution.
SECTION 7
PLUMBING
7-9
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