Heat Pump; Ducted Roof Air Conditioning System - Winnebago Cambria Owner's Manual

ventilation to avoid a nuisance smoke
alarm. We do not recommend removing
the smoke alarm battery.
Further Information
Please see the furnace operating instructions
provided in your Owner InfoCase for further
information, including operating precautions,
and periodic maintenance. See the Coach
Maintenance Schedule in Section 11 for
recommended intervals.

HEAT PUMP

- Optional
Your coach may be equipped with an air
source heat pump built into the 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
conditioner running in reverse. An air
conditioner absorbs heat from the air on the
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 temperature.
The efficiency of a heat pump decreases as the
outdoor air temperature drops, so supplementary
heat is often needed when the outside
temperature nears freezing. This system is set to
automatically start the LP gas furnace to assist
the heat pump if room temperature cools to 5
degrees or more below the thermostat set
temperature. 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 degrees F.
To operate the heat pump
For complete operating instructions, refer to
the manufacturer's information provided in your
Owner InfoCase.
APPLIANCES & SYSTEMS
If the furnace must assist the heat pump three
times in a row, the thermostat will shut down the
heat pump for two hours and the furnace will take
over as the heat source. After two hours the heat
pump will become active again and try to be the
primary heat source.
Gas Heat = Gas Furnace
Electric Heat = Heat Pump
Cool = Roof Air Conditioner
Check your Air Filter
Closed or blocked vents and dirty air filter can
hinder the efficiency of a heat pump.
• Be sure ceiling vents are open to distribute
heat pump output air.
• The washable foam filter should be checked
monthly for dirt build-up and cleaned or
replaced as needed. It is located in the ceiling
mounted return AC grille in the lounge area.
DUCTED ROOF AIR
CONDITIONING SYSTEM
NOTE: The ducted roof air conditioning system
has ceiling registers that can be closed if
necessary to force more cool air toward a
specific area of the coach or to route cool
air away from a specific area. If too
many vents are closed, however, it can
cause the air conditioner unit to shut
down, particularly in high humidity
conditions.
All cooling functions controlling to setpoint
have a short cycle protection time delay of 3
minutes. There will be no delay if the cycle OFF
time exceeds 3 minutes.
SECTION 4
4-5