10-13
SECTION 10
PLUMBING SYSTEMS
10 - PLUMBING SYSTEMS
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.
9. Now turn air pressure off and disconnect
water purge adapters. Recap the city water
connection to avoid contamination by dirt or
insects.
10. Close all drain valves and faucets to avoid
contamination by dirt or insects. Reinstall
water heater drain plug and close P-T relief
valve.
11. Pour about one cup of non-toxic RV anti-
freeze into the kitchen sink drain, bathroom
sink drain and shower drain. This prevents
any holding tank odors from entering the
coach during storage.
12. Place a bucket beneath the sewage drain
valve outlet and re-drain the sewage and
waste holding tanks of any clean water that
entered during “blow-out” procedure.
Close dump valves to prevent valve shafts
from rusting and to prevent entry by rodents
and insects. Refit the dust cap onto the drain
outlet.
Your drainage and fresh water systems are
now totally winterized.
It is not necessary to add antifreeze to the toi-
let since the flush valve will be closed.
Do not add automotive antifreeze or caustic
chemicals such as bleach or laundry detergents
into the toilet bowl or holding tanks. Although
these products may have a deodorizing effect,
they may damage plastic and rubber parts in the
system.
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 from most RV supply stores. Follow
directions on the container to determine
the correct amount to use for your
coach.
If your coach is equipped with the op-
tional water heater by-pass valve, you
can fill the hot water lines with antifreeze
solution without filling the water heater
tank. See earlier pages for location of the
by-pass valve.
Limit air pressure to 30 psi to avoid
damage to pump or water lines.
City Water
Connection
CAUTION
1
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.
WARNING
