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Section 8
Plumbing Systems
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 water".
FRESH WATER TANK FILLING PROCEDURES:
Always fill the fresh water tank at 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 faucet 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 on demand pump that
is fully automatic 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 as pressure build back up.
Water Pump Switch
The water pump switch is located on the interior of the coach in a central location, varies depending upon the
model. 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 way from the vehicle or
not using the water system. A slow leak in a faucet could drain the water system and discharge the coach
battery.
Initial Start-Up
1. Make sure that all water drain valves are closed, including water heater valve.
2. Turn water pump switch to the "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 also deliver a steady stream of water. This will ensure that the water heater
is filled with water.
7. Checks to be sure pump stops soon after all faucets have been closed.
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