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SECTION 7
PLUMBING SYSTEMS
7. Open the hot water line on all the faucets
until water begins to flow continuously and
a chlorine smell is noticeable.
8. Close the hot water lines and repeat with
the cold water lines on the faucets.
9. Let the solution remain in the system for at
least four hours when disinfecting with 50-
ppm residual chlorine.
If a shorter time period is desired, then a
100-ppm chlorine concentration should be
permitted to sit in the system for at least
one hour.
10. After the required period, drain the
chlorine solution from the fresh water
system (see Draining the Fresh Water
System).
Some solution may remain in the water
heater and will be flushed in the following
steps:
12. Fill the fresh water system completely full
using clean (potable) water.
13. Then, drain the fresh water system (see
Draining the Fresh Water System).
If a chlorine taste lingers in the water, flush
the water system with a solution consisting of
one-quart vinegar to five gallons of clean
water. Re-flush as necessary.
W
T
P
INTERIZING
HE
Automotive antifreeze (ethylene glycol) and
windshield washer antifreeze (methanol)
are poisonous. Never use these products
in your fresh water system. These products
are harmful and may be fatal if swallowed.
Preparing your park trailer for colder weather
or storage is very important for most states
and Canada. Failure to prepare your park
trailer may cause water supply lines and the
water heater to freeze. No commodity or
product should be added to the fresh water
system to ensure freeze protection other than
RV antifreeze. The park trailer should be
winterized at the end of the camping season
or when the park trailer will be exposed to
52
S
LUMBING
YSTEM
temperatures that will fall at or below 32°F
(0°C). Repairs due to freezing are not
warrantable.
There are two methods of winterizing your
trailer based upon your model. Please read,
understand and follow all instructions before
beginning.
Air pressure
(Atwood water heaters only)
This method will utilize an air hose to blow
excess water from the water lines.
1. Make sure all holding tanks are empty and
drain valves OPEN.
2. Run the water pump until it is dry, this will
take approximately 15-20 seconds.
3. OPEN all faucets and drains, and the
toilet.
4. Using an air hose and adapter (customer
supplied), blow air through the city water
connection. Any remaining water will blow
out in five to ten minutes.
5. Pour one cup of non-toxic RV antifreeze
into all drain P-traps.
Water heater bypass
(Rheem and Atwood water heaters)
It may be easier to winterize the park trailer
with another person to assist you.
1. Level the park trailer and drain the fresh
water plumbing system.
2. If so equipped, replace the water filter
cartridge with the clear plastic bypass
hose.
3. Make sure the water heater 12-volt and
120-volt interior control switches are OFF.
4. Move the "water heater bypass valve" to
the BYPASS position.
5. Make sure the "fresh tank drain" and "low
point drains" are closed.
6. Insert the clear hose into a container of
RV
antifreeze
solution
should be enough to winterize the park
trailer); attach the other end to the Gravity
Fill.
7. Turn the water pump ON.
(this
quantity
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