Owner`s manual

SF 345

Chapter 5:

PLUMBING SYSTEMS

5.1 Fresh Water System

GENERAL

The fresh water system consists of a potable water tank, distribution lines and a distribution pump. The pump

is equipped with an automatic pressure switch and is accessed through the cockpit machinery space. An in-

line strainer located near the pump protects the system from debris. The tank is filled through a labeled deck

plate located in the island.

DO NOT FILL THE SYSTEM WITH ANYTHING OTHER THAN WATER. SHOULD THE

SYSTEM BECOME CONTAMINATED WITH FUEL OR OTHER TOXIC FLUIDS, COMPO-

NENT REPLACEMENT MAY BE NECESSARY.

DO NOT CONFUSE FUEL FILL DECK PLATES WITH THE WATER OR WASTE FILL DECK

PLATES. THESE PLATES ARE ALSO LABELED ACCORDINGLY. IF GASOLINE OR DIE-

SEL IS ACCIDENTALLY PUMPED INTO THE WATER OR WASTE TANK, DO NOT AT-

TEMPT TO PUMP IT OUT YOURSELF. WATER AND WASTE PUMPS ARE NOT DESIGNED

TO PUMP FUEL AND A FIRE OR EXPLOSION COULD RESULT. HAVE THE FUEL PRO-

FESSIONALLY REMOVED AND THE COMPONENTS OF THE FRESH WATER SYSTEM RE-

PLACED AS NECESSARY.

OPERATION

Fill the water supply tank slowly through the labeled deck plate. A water tank level gauge is located on the

cabin DC electrical panel. The tank capacity is approximately 30 gallons. After filling the water tank, partially

open all faucets. The “Fresh Water System” breaker on the cabin DC panel should be on. Allow the pump

to run until all of the air is purged from the system and a steady stream of water is flowing from each outlet.

Next, turn off the faucets one by one. As the pressure builds, the pump will automatically shut off.

When properly primed and activated, the water system will operate much like the water system in a home.

An automatic pressure sensor keeps the system pressurized. If the system has been recently filled or has not

been used for an extended period, air bubbles may accumulate at the pump and the system may have to be

reprimed.

DO NOT ALLOW THE FRESH WATER PUMP TO RUN DRY. THE FRESH WATER PUMP

WORKS ON DEMAND AND WILL NOT SHUT OFF AUTOMATICALLY WHEN THE TANK

IS EMPTY. THIS CAN RESULT IN DAMAGE TO THE PUMP. ALWAYS TURN THE WA-

TER PRESSURE SWITCH "OFF" WHEN THE FRESH WATER SYSTEM IS NOT IN USE.

WATER HEATER

The water heater is located in the machinery space. All heaters have an AC element that is thermostatically

controlled at the heater and activated by a circuit breaker located in the AC panel. A high pressure relief valve

protects the system from excessive pressure. Always make sure all air is purged from the water heater and