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SECTION 5
PLUMBING SYSTEMS
point of water lines.
4. Open all faucets, including the outside
shower faucets.
5. Turn ON the water pump and allow it to
run as needed.
6. Operate the toilet flush lever until water
stops flowing.
7. Relieve the water pressure using the P&T
valve BEFORE removing the water heater
drain plug. Otherwise, if there is any water
pressure present the water will spray out
of the opening when the drain plug is
removed.
When you are finished draining the fresh
water system, reverse these steps and dump
the grey and black water holding tanks at an
appropriate facility or according to local public
codes.
S
W
ANITIZING THE
ATER
When you drain a RV fresh water holding
tank there may still be some water left in
the tank. It is very important you sanitize
and flush the fresh water system to remove
this residual water before using the RV
again. Failure to sanitize the potable water
system could result in death or serious
illness.
Chlorine is poisonous. Always recap the
household bleach bottle and clean utensils
and containers after use.
Potable
water
systems
maintenance to deliver a consistent flow of
fresh water. For your personal safety, the
plumbing system should be sanitized when
your RV is new, at the beginning and end of
each season and when the water system
becomes contaminated (or approximately
every three months of use), tastes stale or
has an odor.
1. Level the RV and drain the fresh water
system.
44
S
YSTEM
require
periodic
2. Prepare a chlorine solution by adding
about 1/4 cup of unscented household
bleach (sodium hypochlorite solution) to a
one gallon container; then, continue filling
the container with clean, potable water.
Use one gallon of the chlorine solution for
every 15 gallons of RV fresh water tank
capacity. This should result in a residual
chlorine concentration of 50 ppm in the
RV fresh water system.
If a 100-ppm concentration is used, add ½
cup of unscented household bleach to a
one gallon container; then, continue filling
the container with clean, potable water.
Use one gallon of the chlorine solution for
every 15 gallons of RV fresh water tank
capacity.
3. Open the "water heater bypass valves."
4. The low point drains must be closed for
the chlorine solution to siphon through the
lines.
5. Open the "fresh water tank bypass valve."
6. Place the free end of the clear hose in the
container of chlorine solution and open the
"winterization valve".
7. Turn
the
water
If the water pump fails to self-prime,
temporarily open the low point drains.
Close the low point drains as soon as the
water pump primes (the chlorine solution
will
begin draining out)
continuing to the next step.
8. Turn OFF the water pump when the
container of chlorine solution is empty.
9. Continue filling the fresh water tank with
clean (potable) water until it is full.
10. Open the hot water line on all the faucets
(kitchen, lavatory, shower and outside
shower)
until
water
continuously and a chlorine smell is
noticeable.
11. Close the hot water lines and repeat with
the cold water lines on the faucets.
12. Let the solution remain in the system for at
least four hours when disinfecting with 50-
PPM residual chlorine solution. If possible,
drive your tow vehicle and RV around for
approximately 20 minutes to agitate
solution and assist in cleaning the entire
tank.
pump
ON.
and before
begins
to
flow
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