Pressurized Water System; Priming The System; System Operation; Water Heating Systems - Four winns 278 VISTA Owner's Manual

5. Drain the system.
6. Flush the system thoroughly with fresh water.
7. Fill the system with fresh water.
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.
J - 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. Refer to Figure J2 and the
drawings at the end of this section.
A. Priming the System
After filling the water tank, open all faucets partially.
Activate the FRESH WATER switch on the cabin
lights 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
faucets 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-5 - 12 Volt Electrical
Equipment and the manufacturer's literature included
in the owner's packet for additional information.
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 pressur-
ized. Simply turn on the faucet and water will be
delivered. If the system has been recently filled, or
has not been used for an extended period of time,
air bubbles may accumulate at the pump and/or in
the waterlines. If this should happen, re-priming may
Water and Waste Systems - Section J
be necessary. Refer to the preceding subsection
regarding priming the system.
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
temperature 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
A water heater is a standard feature available on the
258 and 278 Vista models. The capacity of the water
®
heater may be found on our website at www.four-
winns.com. Refer to Figure J3 and to the drawings at
the end of this section.
NOTICE
Water heater location may vary due to the
installation of optional equipment.
The water heater utilizes 120 volt (220 volt on 50
Hertz models) power. The water heater breaker switch
is located on the cabin 120 Volt AC panel.
NOTICE
DO NOT supply 0 volt power to an empty
water heater. Damage to the heater will result
immediately. The water system must be filled
and primed before attempting to use the water
heater.
Water Heater
Figure J3: Water Heater Location
On the 258 and 278 Vista
incorporates a heat exchanger. The heat exchanger
allows the engine coolant to heat a portion of the fresh
models, the water heater
®
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