858539-YUM-A-0512
2
Unitary Products Group
SAFETY INFORMATION -
•
Make sure that the area
around the heat pump is clear
and free of combustible materi-
als, gasoline and other flam-
mable vapors and liquids.
•
Be sure the
heat pump
is free
and clear of insulating material.
Some insulations are combus-
tible.
•
For proper operation of this
equipment, air for combustion
and ventilation is required.
Make sure that these open-
ings are not obstructed.
•
For lighting or shutting down
the gas section, refer to the
lighting instructions provided
adjacent to the burners and
also located in this manual.
•
A blocked vent roll-out switch
is provided in the burner com-
partment. This switch is a man-
ual reset. If the gas heating
section fails to operate, contact
a qualified service agency.
•
Should the gas supply fail to
shut off or if overheating occurs,
shut off the gas valve to the
unit
before shutting off the electrical
supply. Then call a qualified ser-
vice technician.
•
Do not use this equipment if
any part has been under water.
Flood damaged equipment can
be
extremely dangerous.
Attempts to use the gas heat
section can result in fire or
explosion. A qualified service
agency should be contacted to
inspect the
equipment
and to
replace all gas controls, control
system parts, electrical parts
that have been wet or the
pack-
age unit
if deemed necessary.
•
Determine the integrity of the
installation regarding the flue
gas vent, the return and supply
air duct, the equipment is well
supported and there are no
signs of deterioration. The man-
ufacturer recommends that
main burner, ignition de-vice
and controls are inspected by a
qualified furnace technician
before each heating season.
This gas/electric, Dual Fuel Heat
Pump is designed for outdoor use
and can be installed anywhere
from grade level to the roof. This
Dual Fuel Heat Pump has been
specially developed and built to
meet dual needs of heating and
cooling. That’s why you can rely on
efficient, trouble-free operation.
GENERAL INFORMATION
HOW YOUR HEAT PUMP
WORKS
If your hand is wet and you blow on
it, it feels cool because some of the
moisture is evaporating and
becoming a vapor. This process
requires heat. The heat is being
taken from your hand, as your hand
feels cool.
That’s what happens with a heat
pump. During the cooling cycle,
your system will remove heat and
humidity from your structure and
will transfer this heat to the outdoor
air.
During the heating cycle, your sys-
tem will absorb heat from the out-
door air* and will transfer this heat
to your structure. Remember that
your heat pump doesn’t generate
much heat, it merely transfers it
from one place to another.
*This is possible because even 0
F
outdoor air contains a great deal of
heat.
SYSTEM OPERATION
THERMOSTATS
Your thermostat puts full control of
the comfort level in your structure
at your fingertips.
Set your thermostat for heating or
cooling. Find the temperature that
is most comfortable for you, and
then leave your thermostat alone.
Manually moving the thermostat up
or down to extreme settings will not
speed up temperature changes.
Avoid moving the thermostat up
during heating - particularly where
a demand type electric meter is
installed. This will increase your
operating cost substantially.
COOLING CYCLE
Switch your thermostat to cool.
Select a comfortable thermostat
temperature setting, typically
between 75 and 80 degrees. Com-
fort sensations vary with individu-
als. The lower the indoor
C
ongratulations . . .
On your purchase of one of our Single Package Dual Fuel Heat Pumps. This energy efficient system has been precision designed,
manufactured of high quality materials and has passed many vigorous inspections and tests to ensure years of satisfactory
service.
Please read this manual thoroughly. It will help you understand your system, tell you how to operate it efficiently and how to
obtain the greatest measure of comfort at the lowest operating expense.
We appreciate your interest in our products and your decision to purchase our Dual Fuel Heat Pump. Enjoy your comfort.
