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HVAC
Oasis Hydronic Heating Operation
This article provides basic operation instructions for the Oasis Hydronic Heating (Floor Heat) system. For your comfort,
your coach may be equipped with the Oasis heating system. This system uses a “boiler” and a pump to heat and
recirculate hot fluid through a series of convectors placed strategically throughout your unit. Fans located on the
convectors provide circulation of the warmed air for more even, efficient heating.
Hydronic Heating
Hydronic Zone Heating systems make climate control simple and effective.
How Hydronic Heating Works
Hydronic central heating is the use of a heat generator
commonly called a boiler (or furnace) to raise the
temperature of a heating medium, generally water
or water and glycol mixture. The heated fluid is then
circulated from the boiler through pipes to heat emitters
such as passive radiators, convectors and underfloor
heating coils, through the interior of the motorhome,
and domestic hot water heat exchanger. The fluid loses
its heat through this circulation and the cooler fluid then
returns to the boiler for reheating.
WARNING
!
Never attempt to modify this furnace. Fire, explosion,
asphyxiation, or carbon monoxide poisoning may
occur. If the furnace malfunctions, consult a trained
service technician.
The Oasis system uses two different sources for heat.
The primary heat source for the Oasis system, and most
efficient, is the diesel burner, which uses diesel fuel from
the fuel tank to burn and create heat. The output of the
diesel burner is 50,000 BTU’s, select double shower
floorplans may be equipped with the 85,000 BTU model.
The second heat source is an electric heating element.
It is important to note the difference in the two systems.
The electric heating elements have two 5,000 BTU
heating elements and should be used only to help
maintain the temperature once the diesel burner has
brought the system up to proper operating heat levels.
From a cold start, the 5,000 watt electrical heating
elements will not operate the system alone.
Domestic Hot Water
For information regarding domestic hot water via Oasis
hydronic heating, refer to Newgle.
Oasis Zones
For heating, your unit is divided into three “zones” on
your thermostat or your climate screen, if your coach
is equipped with the SilverLeaf system. The “Furnace”
mode will appear in all four zones, but only three are
active.
ZONE 1 - DASH, LIVING ROOM, AND
KITCHEN CONVECTORS
These convectors are located under the dash and
kitchen cabinets, and control heat in the cockpit, living
room, and kitchen areas. The dash mounted convector
is the only one in your unit that has a two speed fan. The
switch controlling the fan speed is located in the front
overhead cabinet adjacent to the diesel boiler switch.
Touch the FANS button. Then select which fan you wish
to operate. Once a button is touched, it will turn red,
indicating the selected fan location. The buttons are
gray while the circuit is inactive. The available buttons
will vary by coach model and floorplan, as well as
installed options, may include, but are not limited to:
•
KITCHEN
•
MASTER BATH
•
STOOL ROOM
The fan operation screen provides buttons for On/Off,
Rain Sensor Override, as well as the fan speed (High,
Medium, or Low). A red button indicates the fan is
currently in operation, which fan speed is selected, or
the automatic rain sensing technology is disabled.
Fans