10-3
SECTION 10
– Plumbing Systems
Class A
10 –
Plumbing
Syste
m
s
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. Attach a hose from the external water source
to the city water connection in the utility
compartment or on the left side of your
vehicle.
3. Turn on the external water source.
When connected to an outside source of water,
the water bypasses the demand pump and stor-
age tank and supplies pressure directly to indi-
vidual faucets and toilet. A check valve built into
the pump prevents water from entering the pump
and filling the storage tank.
NOTE: Because city water pressure varies from
location to location, we recommend
using an
in-line water pressure regulator
to prevent damage to any components,
connections and seals in your fresh water
system.
A water pressure regulator may be
obtained from any well stocked RV
dealership retail center and some retail
discount centers. These devices simply
connect in-line between the supply hose
and the city water input on the coach.
We recommend a regulator that controls
water pressure to
40 psi maximum
.
To Disconnect From the External
Source:
1. Turn the external source off.
2. Open a faucet inside the vehicle to relieve line
pressure.
3. Disconnect the hose from the vehicle and
replace the cap on the connection.
WARNING
Chlorine is poisonous – recap bottle and
clean utensils after use.
Never use automotive type antifreeze in
your potable water system as it is
poisonous.