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To remove excessive chlorine taste or odor which might
remain in the system, prepare a solution of one quart
vinegar to five gallons water and allow this solution to
agitate in the tank for several days during boating. Then
drain tank and refill with fresh water.
All drains are equipped with traps, and the water will drain
slowly. If the system is not operating properly, have it
checked by your authorized Four Winns dealer.
G - 2
PRESSURIZED WATER SYSTEM
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 the drawings at the end of this section.
Water pump locations for each model are listed in Table
III.
Table III: Water Pump Location
MODEL
WATER PUMP LOCATION
238
Port Engine Compartment
258
Below Head Sink, Inside Cabinet
278
Below Forward V-Berth, Stbd Side
A. Priming The System
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 washdown (if applicable).
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 E-6 12 Volt Electrical Equip-
ment and the manufacturer's literature included with this
manual for additional information.
Vista Owners Manual
10/93
B. System Operation
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.
C. Water Heating Systems
The water heaters used on Vista models have six gallon
capacities. The water heater is installed on the port side
of the engine compartment. This is an option on the 238
model and standard on the 258 and 278 models. Refer to
Figure G1 and to the drawings at the end of this section.
NOTICE
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.
NOTICE
DO NOT supply 120 volt power to an empty wa-
ter heater. Damage to the heater will result. The
water system must be filled and primed before
attempting to use the water heater.
Section G
Page 2
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