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10-9
SECTION 10
PLUMBING SYSTEMS
10 - PLUMB
ING SYSTEMS
NOTE: If your coach is equipped with a water
purifier system, you will need to remove
the filter cartridge and install the divert-
er plug supplied. The cartridge is located
beneath the galley sink counter. The di-
verter plug must be removed and a filter
cartridge installed before resuming nor-
mal use of the water system. The plug is
intended for winterization only.
4. Operate the toilet flush lever and hold until
water stops flowing in the toilet. Then turn
water pump switch OFF.
5. 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, acces-
sible 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 drain-
ing.
6. After water has stopped draining at all fau-
cets and drain valves, leave faucets open and
connect a “blow-out” plug to the city water
connection on the coach. Then use a com-
pressed 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.)
NOTE:
DO NOT burst air into the system.
This can damage the water pump. It is
better to let air in slowly.
7. Let air flow for five minutes until water is
completely drained out of faucets and drain
valves. Then close faucets one at a time.
8. Operate and hold toilet flush lever until
water is completely drained from toilet.
D R A I N
D R A I N
C L O S E
C L O S E
I N - L I N E
V A L V E
L I N E - E N D
V A L V E
Limit air pressure to 30 psi to avoid
damage to pump or water lines.
City Water
Connection
CAUTION