SECTION 7
PLUMBING SYSTEMS
7-4
INSTRUCTIONS FOR
DISINFECTION OF FRESH WATER
SYSTEMS ON RECREATION
VEHICLES
(As approved by the U.S. Public Health
Service)
To assure complete disinfection of your fresh
water system, it is recommended that the follow-
ing procedure be followed on a new system, one
that has not been used for a period of time, or
one that may have become contaminated. This
procedure is also recommended before long
periods of storage such as over winter.
1. Prepare a chlorine solution using 1 gallon of
water and 1/4 cup of household bleach
(sodium hypochlorite solution). With tank
empty, pour chlorine solution into the tank.
Use 1 gallon solution for each 15 gallons of
tank capacity. This procedure will result in a
residual chlorine concentration of 50 ppm in
the water system. If a 100 ppm concentration
is required as discussed in item 3, use 1/2
cup of household bleach with 1 gallon of
water to prepare the chlorine solution. One
gallon of the solution should be used for
each 15 gallons of tank capacity.
2. Complete filling of tank with fresh water.
Open each faucet and run the water until a
distinct odor of chlorine can be detected in
the water discharged. Do not forget the hot
water taps.
3. Allow the system to stand at least 4 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 stand in the system
for at least 1 hour.
4. Drain and flush with fresh water.
EXTERNAL WATER
SUPPLY (“City Water”)
To connect to an external source:
1. Turn the demand pump switch to off.
2. Pull a sufficient amount of hose from the
water center hose reel and attach to an exter-
nal city water faucet.
3. Turn water center diverter valve to CITY
WATER position.
4. Turn on the external water source.
When connected to an outside source of
water, the water bypasses the demand pump and
storage tank and supplies pressure directly to
individual faucets and toilet. A check valve built
into the pump prevents water from entering the
pump and filling the storage tank.
Chlorine is poisonous - recap bottle
and clean utensils after use.
Never use automotive type antifreeze
in your potable water system as it is
poisonous.
WARNING
