CLASS C MOTOR HOME SECTION 8 - PLUMBING SYSTEM
8 - 3 GH/M
12-VOLT WATER PUMP & SWITCH
When you want to use water in your motor home and it is not hooked up to city
water, you will need sufficient 12-volt DC power to run the water pump
.
Fig 8.1 Water pump
Once activated, the water pump (also known as the demand pump) will self-prime,
and provide water. The water pump continues to run until approximately 45 lbs. of
pressure is achieved then shut off. The water pump will automatically re-start
when pressure drops. Some cycling may occur, depending on the volume of water
being released. The water pump has a built-in check valve to prevent water from
back flowing.
All water pump switches illuminate when the water pump is activated. Please be
aware the water pump must be shut OFF at the same switch used to turn it ON.
The water pump switch should be in the OFF position when the motor home is
unattended for any amount of time. If something would happen to the water
system, this may help limit water damage to a smaller area.
Fig. 8.2 Water pump strainer
Periodically check the in-line water pump strainer for accumulated debris. To
clean, shut off the water pump, unscrew the clear cap, remove the re-useable
metal strainer and clear any debris, then reinstall.
WATER HEATER
Your motor home has been equipped with a tankless water heater. The tankless
water heater uses up less LP Gas than storage tank model water heaters since it
only uses energy when hot water is demanded. There is no pilot light to burn
when no hot water is needed. The tankless water heater supplies an unlimited
supply of hot water on demand (once lines are purged of standing water). As hot
water is demanded, the cold water enters the heater. A water flow sensor detects
the flowing water and automatically ignites the burner. Water circulates through
the heat exchanger and is heated to the set temperature. When the tap is closed,
the unit shuts down.
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