Water Systems
9.2
Always ensure when filling the fresh water tanks
you are filling it through the fresh water fills. Other
fill fittings or pump-outs are visually similar. Fill-
ing fresh water into the waste pump out could flood
your boat, or filling the diesel fuel tank could dam-
age your fuel system.
9.1.2 Fresh Water Sanitation
NOTE: Please be sure and read the OEM manuals supplied
with your boat. The next section is quoted from one of those
manuals.
“Sanitizing Potable water systems require periodic main-
tenance to deliver a consistent flow of fresh water.
Depending on use and the environment the system is
subjected to, sanitizing is recommended prior to storing
and before using the water system after a period of stor
-
age. Systems with new components, or ones that have
been subjected to contamination, should also be disin
-
fected as follows:
NOTE: This sanitizing procedure is in conformance with the
approved procedures of the US Public Health Service.
Use the following methods to determine the amount
of common household bleach needed to sanitize the
tank:
Multiply “gallons of tank capacity” by 0.13;
the result is the ounces of bleach needed to
sanitize the tank (30 gallons X .13 = 3.9 oz
bleach).
Use the number of liters of tank capacity to
determine the number of milliliters of bleach
needed to sanitize the tank (120 liters of tank
capacity = 120 milliliters of bleach).
Mix into solution the proper amount of bleach within
a container of water
Pour the solution (water/bleach) into the tank and fill
the tank with potable water.
Open all faucets (hot and cold) allowing the water to
run until the distinct odor of chlorine is detected.
The standard solution must have four (4) hours of
contact time to disinfect completely. Doubling the
solution concentration allows for contact time of one
(1) hour.
1.
a.
b.
2.
3.
4.
5.
When the contact time is completed, drain the tank.
Refill with potable water and purge the plumbing of
all sanitizing solution.”
9.2 Pumps
Your boat will have both fresh water and raw water
pumps which control the flow of water to the related
components. These are electrically powered pumps.
9.2.1 Fresh Water Pump
The fresh water pump supplies pressurized water to the
system The pump is located in the galley and accessed
through the sink cabinet door (Fig. 9.4).
Figure 9.4
The fresh water pump breaker switch is located on the
DC panel (refer to the DC Electric System chapter in this
manual for switch breaker details). When the breaker is
switched on, the pump will run until the hot and cold water
system is pressurized. An automatic pressure switch
shuts the pump off until the pressure drops to a preset
level (for example, a pressure drop caused by opening a
faucet). The pump will then run again until the system is
pressurized and turn itself off. The pump has a built-in
check valve to prevent backflow through the pumps.
In addition to the standard access to fresh water through
6.
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