SECTION 7
PLUMBING SYSTEMS
7-1
FRESH WATER SYSTEM
The fresh water system provides water to the
galley sink, shower, bathroom lavatory, toilet and
water heater. Water may be supplied by either of
two sources:
−
a water tank located within the motor home,
or
−
any external water source to which the motor
home may be connected, known as “city wa-
ter”.
FILLING THE FRESH WATER TANK:
Always fill the fresh water tank at an approved
potable water filling facility or a known purified
drinking water source.
The tank may be filled by inserting a hose into
the tank fill opening. A built-in vent prevents the
tank from becoming air-locked while filling.
When neither city water nor a hydrant are
available, a bucket and funnel may be used to fill
the tank, but this can take a considerable amount
of time.
WATER PUMP
Pressure for the water system is supplied by a
water system demand pump which is fully auto-
matic after initial priming. When a faucet is
opened, the pump begins operation to provide a
constant flow from the tank. When the faucet is
closed, the pump automatically shuts off.
WATER PUMP SWITCH
The water pump switch is located on the wa-
ter/holding tank monitor panel (See Section 8).
While the switch is in the “ON” position, the
pump will automatically supply water pressure as
it is needed. It is recommended that the pump
switch be turned off whenever you are away from
the vehicle or not using the water system. A slow
leak in a faucet could drain the water system and
discharge the house battery.
INITIAL START-UP
1. Make sure that all water drain valves are
closed, including water heater valve. (Refer
to Section 10.)
2. Turn water pump switch to “OFF” position.
3. Fill water tank.
4. Open all faucets, hot and cold.
5. Turn on pump switch.
6. Close each faucet as it begins to deliver a
steady stream of water (close cold water
first). Leave hot water faucets on until they
Fresh Water Tank Capacity
Model 427P..........................................30 gal.
Models 430V & 431C..........................35 gal.
W A T E R T A N K F I L L