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PLUMBING
Domestic Hot Water via Hydronic Heating
This article provides a basic overview of domestic hot water via the Oasis hydronic heating system.
CH50 NE-S CHINOOK
BTU 50,000 85,000 50,000
Maximum Water Temperature
(at incoming water temperature of 60°F)
120°F 120°F 120°F
Gallons Per Minute (GPM) 1.5 3.0 1.5
Potable Hot Water Capacity
The hot water in your coach is heated by the Oasis
hydronic heating system. To operate an appliance that
uses hot water, or to assure plenty of hot water for
showering, turn on the boiler or heating elements using
the Oasis control panel or the SilverLeaf touchscreen (if
equipped) located in the front overhead cabinet.
Both heat sources (boiler and heating elements) can be
used at the same time for the desired maximum water
heating capability. Turning the 120 volt heating element
on will usually provide su ffi cient hot water for most
household chores.
CAUTION
!
Never allow the pump to run for long periods of time
without water in the supply tank, as pump damage or
blown fuses may result.
Operation
1. Fill or partially fill the fresh water supply tank.
2. Open the kitchen and bathroom faucets.
3. Turn the water pump switch on, and allow the water to
fill the water line and the hot water heater. The switch
to this pump may be located in the exterior water
compartment, in the kitchen, or in the bathroom.
4. Close each faucet after it delivers a steady stream of
water (close the cold water first). Leave the hot water
faucets on until they also deliver a steady stream of
water. This will ensure that the water heater is filled
with water.
Water Pump Operation and Basic Troubleshooting
The water pump is self-priming and totally automatic, operating on demand whenever water is required. When not
connected to city water, the coach’s water pump is used to pump and pressurize water from the fresh tank for distribution
through the hot and cold water lines.
Water Pumps and Controllers
When the water pump switch is turned on, the water
pump builds pressure in the system and will shut o ff
as soon as the system is correctly pressurized. When a
faucet is opened, the pump will turn on and operate as
necessary to maintain the preset pressure in the system.
Water pump operation is not necessary while the coach is
connected to city water, since the potable water is already
pressurized.
When using water at a low flow rate (GPM), the pump may
pressurize the system and short cycle, meaning the pump
shuts on and o ff quickly. In many cases, the pump will
stop short cycling if the flow rate of the water is increased.
Care and Maintenance
All of the water should be drained from the fresh water
system when the unit is not in use for more than one
week.
Troubleshooting
If water doesn’t flow when a faucet is turned on
while using the demand system, use the following
troubleshooting tips.
5. The water pump should stop running once all faucets
are closed.
6. The pump is now ready for automatic operation. The
pump will run when a faucet is opened and stop when
a faucet is closed and the correct pressure has been
reached.