Disinfecting Your Fresh Water System; Shower Hose Vacuum Breaker - Winnebago Via 25Q Manual

SECTION 7 –
PLUMBING
DISINFECTING YOUR FRESH
WATER SYSTEM
(As required by NFPA
Recreational Vehicles)
To ensure complete disinfection of the potable
water system, it is recommended that the
following procedure be followed on a new
system, one that has not been used for a period of
time, or one that could have become
contaminated.
This procedure is also recommended before
long periods of storage, such as over winter.
Disinfecting with Gravity Fill
1. Prepare a chlorine solution using 1 gallon of
water and 1/4 cup of household chlorine
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 desired as
discussed in Step 4, use 1/2 cup of household
bleach with 1 gallon of water to prepare the
chlorine solution. One gallon of this solution
should be used for each 15 gallons of tank
capacity.
WARNING
Chlorine is poisonous. Do not misuse.
Recap bottle and clean all utensils after
use.
2. Complete filling of tank with fresh water.
3. Open each faucet in the coach and run the
water until a distinct odor of chlorine can be
detected in the water discharged. Do not
forget the hot water faucets.
4. Let the system stand at least 4 hours when
disinfecting with 50 ppm residual chlorine. (If
a shorter time period is desired, then a 100
7-6
®
1192 Standard on
ppm chlorine concentration should be
allowed to stand in the system for at least 1
hour.)
5. Drain the water tank and refill with fresh
water.
6. Open each faucet again and run fresh water to
flush chlorinated water from the lines. Run the
water until there is no odor of chlorine
detected in the water discharged. Do not
forget the hot water faucets.
(You may need to leave a hot water faucet
open for some time to flush the water heater
with clean water. You may also want to turn
the water heater off until this is done to avoid
wasting energy trying to heat "unused"
water).
7. Water system is now disinfected.
Continuous Tank Disinfection
(Superchlorination)
Some RVers like to ensure continuous
sanitation of their fresh water tank by
"superchlorination"– maintaining an effective
low level of chlorine in the tank at all times.
• Add 1 teaspoon of chlorine bleach (sodium
hypochlorite) to your tank for each 10 gallons
of tank capacity. When you fill the tank, this
will result in a 6.7 ppm level of chlorine,
which should kill harmful bacteria and slime-
forming organisms.
• Chlorine may be removed from drinking
water by the cold water filter at the galley
faucet or by the separate filtered water faucet
(if equipped).
• Superchlorination does not affect city water
usage, only the fresh water tank.
SHOWER HOSE VACUUM
BREAKER
After using the shower, you may notice water
dripping from the shower faucet assembly. The
dripping results when vacuum in the shower hose
(after closing the shower faucet) slowly releases
and allows water remaining in the hose to drain
down. This is a normal function of the shower
valve assembly and is not a leak or defect.