Four winns vista Owner's Manual page 80

The water pump is an automatic, on-off, self-priming pump
that can service several outlets at once. The pump will
build up water pressure and will turn off when it reaches
35 psi. It will generate 20 psi with the faucets open. Refer
to Figure J1 and the drawings at the end of this section.
After filling the water tank, open all faucets partially. Then,
activate the FRESH WATER switch on the cabin panel to
supply the system with water. Let the pump run until
water comes out of the galley faucet, head faucet and
transom shower.
After all the air has been purged from the system and a
steady flow of water is coming from each outlet, turn off
the faucets one by one. Begin with the cold water fau-
cets and continue until all faucets are shut off. As the
pressure builds, the pump will automatically shut off at
35 psi. Refer to Section H-4 - 12 Volt Electrical Equip-
ment and the manufacturer’s literature included in the
owner’s packet for additional information.
When properly primed and activated, the pressurized water
system can be used in the same manner as the water
system in a home. An automatic pressure sensor in the
water pump keeps the system pressurized. Simply turn
on the faucet and water will be delivered. If the system
has been recently filled, or has not been used for an extend-
ed period of time, air bubbles may accumulate at the
pump. If this should happen, re-priming may be neces-
sary.
To obtain the most consistent mixture of hot and cold
water, turn the cold water on full, then mix in hot water
until the desired temperature is obtained. If water pump
cycling occurs, some minor variations in water tempera-
ture can be expected.
Whenever the boat will be left unattended for an extended
period, the water pump switch should be turned to the
OFF position. This switch should also be turned OFF
whenever the water tank is to remain empty for an extended
period of time.
Vista 348 Owner’s Manual
08/01
The water heater used on 348 Vista has a 10.5 gallon
capacity. The water heater is installed on the port side of
the engine compartment. Refer to Figure J2 and to the
drawings at the end of this section.
Water heater location may vary due to the in-
stallation of optional equipment.
The water heater utilizes 120 volt (220 volt on 50 Hertz
models) power. The water heater breaker switch is lo-
cated on the cabin 120 Volt AC panel.
DO NOT supply 120 volt power to an empty wa-
ter heater. Damage to the heater will result im-
mediately. The water system must be filled and
primed before attempting to use the water heater.
Transom
Washdown
City Water
Hook-Up
Figure J2: Water Heater & System Components
A water heater that incorporates a heat exchanger is stan-
dard on the 348. The heat exchanger allows the engine
coolant to heat a portion of the fresh water supply while
the engines are operating. This option will provide hot
water at times when 120 volt power is not available. Addi-
tional information on heat exchangers is covered in the
engine and hot water heater manufacturers’ manuals.
Please refer to Section H - Electrical Systems for addi-
tional information.
Cockpit Galley Faucet
Ice Maker
Water Heater
Section J
Page 2