on an incline, or the motion caused by starting
or stopping the RV during travel.
Do not cap, block or modify the fresh water
tank overflow tubes in any way. Enough
water pressure can build up during the
filling process to damage the plumbing
system if the overflow tubes are
obstructed.
WATER PRESSURE REGULATOR
Excessive pressure from water supply
systems may be encountered in some parks,
especially in mountain regions. Water
pressure regulators are available to protect the
RV water system against such high pressure.
Water pressure regulators (customer
supplied) are available from your RV dealer to
protect the RV plumbing system against such
high pressure.
12-VOLT WATER PUMP & SWITCH
When you want to use water in your RV and
the RV is not hooked up to city water, you will
need sufficient 12-volt DC power to run the
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 RV is left
unattended for any amount of time. If
something would happen to the water
system, this may help limit water damage
to a smaller area.
For more information
Read the OEM operator’s manual. If you have
further questions, contact your RV dealer, the
OEM or Jayco Customer Service.
WATER HEATER
The water heater is designed to heat water
quickly and efficiently. The water heater OEM
has preset the sensing limit to maintain the
water temperature when the water heater is
activated. If you have not used the water
heater for two weeks or more it may result in
hydrogen gas in the water lines. To reduce the
38
SECTION 5
PLUMBING SYSTEM
Not using a water pressure regulator when
using city water may cause the o-rings to
blow. To prevent damage to the plumbing
system or components when using the city
water connection, a 45 lb. (315 KPa) rated
water pressure regulator is recommended.
Be careful not to overfill the fresh water
holding tank. It can pressurize the tank,
causing leakage and water damage and
void the warranty. DO NOT leave the tank
unattended while filling.
Fig. 5.4 Water Pump
Do not replace any component part with an
accessory part that is not authorized by the
water heater OEM (i.e., an "add-on" electric
heating element, etc.). Such items are not
approved to be installed, could create an
unsafe condition and will void all
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