Winnebago Sunflyer Manual page 99

an air source heat pump built into the central air
conditioning system. Because the heat pump
operates on electricity, it provides economical
heat inside your coach and helps reduce the use
of LP gas for heating in cooler weather.
A heat pump can be thought of as an air con-
ditioner running in reverse. An air conditioner
absorbs heat from the air inside of the coach and
moves it to the outside. The heat pump does
exactly the opposite. Even cold air contains some
heat, so a heat pump will extract heat from the
outside air on a cold day and carry it to the inside
of the coach to maintain a comfortable tempera-
ture.
The efficiency of a heat pump decreases as the
outdoor air temperature drops, so supplementary
heat is often needed when the outside tempera-
ture nears freezing. This sytem is set to automat-
ically start the LP gas furnace to assist the heat
pump if room temperature cools to 45 degrees F
or less. You may wish to manually switch to
furnace heat to maintain a higher temperature
when outside temperatures begin to reduce the
efficiency of the heat pump. The heat pump will
not operate when the outside temperature falls
below 36 degress F.
To turn on the heat pump:
The Heat Source selector switch is a separate
module attached to the right side of the electronic
thermostat as shown.
• To activate the Heat Pump, place the Heat
Source switch in ELECTRIC position. (The
furnace will automatically kick in when
room temperature cools to 45 degrees or
less.)
• To turn the heat pump Off and use the LP gas
Furnace only, place the switch in GAS posi-
tion.
• The heat pump will not operate when the
outside temperature falls below 36 degrees F.
APPLIANCES & INTERIOR FEATURES
Heat Source Switch
ELECTRIC = Heat Pump
GAS = Furnace
Have you checked your air filter lately?
Closed or blocked vents and a dirty air filter
can hinder the efficiency of a heat pump. See Air
Conditioner Filter for location and instructions.
• Be sure ceiling vents are open to distribute
heat pump output air. Also make sure furni-
ture, clothing items, packages or other
obstructions do not block the air return air
grilles beneath the rear bed.
• The filter should be checked monthly for dirt
build-up and replaced as needed. The air fil-
ter is a disposable woven fiberglass type,
which cannot be cleaned and should be
replaced when coated with dust.
CENTRAL AIR CONDITIONING
SYSTEM (Not available on Freight
liner diesel models)
NOTE: See "Electronic Thermostat" for instruc-
tions on turning the air conditioner on
and changing the thermostat settings.
The central air conditioner is mounted in an
exterior compartment on the left (driver) side of
the coach. (See page 0-4.) The compartment door
opens for easy maintenance and periodic service.
(See "Condenser Coils") The cooled air is forced
SECTION 8
TM
8-13