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160619-UUM-B-0206
Fan Operation
Selection
A multi-position
fan switch allows you to choose the type of fan opera-
tion of the indoor fan.
AUTO - With the thermostat fan switch set to "AUTO", the fan will run
intermittently
as required for either heating or cooling. This position will
provide the lowest operating cost. If you purchased one of our thermo-
stats, they have an Intelligent fan mode which continually
circulates the
air during occupied modes or when you are at home, and can cycle the
fan during unoccupied
mode or during the night while you sleep to fur-
ther conserve energy.
ON - If the fan switch is set to "ON _',the indoor fan will not shut off. How-
ever, the system will still operate as required by room temperatures.
This provides continuous air filtering and more even temperature distri-
bution throughout
the house, which is especially usefuI in houses with
basements.
Usually during
spring and fall, when neither
heating
nor cooling
is
required, you may want to run only the fan to ventilate, circulate, and fil-
ter the air in your home or building. Set the comfort control switch to
"OFF" and the fan switch to "ON". Be sure to return the switches to their
original positions for normal operation.
Heating
Cycle
With the thermostat
in the heating position, and the outdoor tempera-
ture in the range of 20 to 30 ° or below, the outdoor unit will generally run
100%of the time.
All systems can be equipped with balance point control to provide even
more efficient operation.
This control will prevent
the electric heater
from being energized
when the outdoor air is above some predeter-
mined temperature
setting (0 to 45°F). At higher temperatures,
your
system will provide all the heat your home will ever need. At lower tem-
peratures, the auxiliary heat will be energized to keep your home com-
fortable.
When the outdoor air is cool and moist, frost may form on the surface of
your outdoor coil. When this frost builds to a certain point, your system
will switch to a defrost cycle. Although you may feel cooler air coming
from your registers, DO NOT adjust your thermostat. The frost will melt
quickly, and your system will return to normal operation automatically.
Cooling
Cycle
Switch your thermostat to cool.Select
a comfortable
thermostat temper-
ature setting, typically between
75 and 80 ° . Comfort sensations
vary
with individuals.
The lower the indoor temperature
desired, the greater
will be the number of hours your unit must operate.
Set your thermostat 2 or 3°F below normal several hours before enter-
taining
large groups during hot weather.
People give off considerable
heat and moisture.
On an extremely
hot day, the indoor temperature
may rise 3 to 6°F
above the thermostat
setting.
Properly selected equipment
does not
have the capacity to maintain a constant indoor temperature
during the
peak load. Over-sizing
your system to handle this peak load is not prac-
tical because the oversized system would operate much less efficiently
at all other conditions.
MANUAL
CHANGE-OVER
THERMOSTAT
COOLING
YOUR
HOME:
With
the comfort
control
switch
in the
"COOL" position, the system will operate as follows: When the indoor
temperature
rises above the level indicated by the temperature
adjust-
ment setting, the system will start. The outdoor unit will operate and the
indoor fan will circulate cool, filtered air. When the room temperature
is
lowered to the setting selected, the system will shut off.
HEATING YOUR HOME: If your system includes a heating unit and the
comfort control switch is in the "HEAT" position, the system will operate
as follows:
When the indoor temperature
drops below the level indi-
cated by the temperature
adjustment
setting, the system will start. The
heating system will operate and the indoor fan will circulate warm, fil-
tered air. When the room temperature
rises to the setting selected, the
system will shut off.
Whether heating or cooling, the fan will continue to operate if the fan
switch was set in the "ON or Intelligent" position. The "AUTO" setting on
the fan switch will allow the fan to shut offwhen
your system does.
ELECTRONIC
THERMOSTAT
The computerized
electronic thermostat,
when programmed,
will func-
tion automatically
to operate the system as follows: When the indoor
temperature rises above the higher (COOL) setting, the outdoor unit will
operate and the indoor fan will circulate cool, filtered air. When the room
temperature
is lowered to the selected level, the system will shut off.
When the indoor temperature
drops below the lower (HEAT) setting, the
heating system will operate, and the indoor fan will circulate the warm,
filtered air. When the indoor temperature
rises to the selected setting,
the system will shut off. The indoor fan will either shut off or run continu-
ously, depending upon your choice of fan switch setting.
SECTION
IIh TO MAXIMIZE
OPERATING
EFFICIENCY
HEATING
CONSERVATION
For the most efficient operation, keep storm windows and doors closed
all year long. They not only help insulate against heat and cold, but they
also keep out dirt, pollen, and noise.
Closing drapes at night, keeping fireplace dampers closed when not in
use, and running exhaust fans only when necessary will help you to
retain the air you have already paid to heat.
Keep lamps, televisions, or other heat producing sources away from the
thermostat.
The thermostat
will sense this extra heat and will not be
able to maintain the inside temperature to the desired comfort level.
COOLING
CONSERVATION
To comfortably
cool your home, your air conditioner
must remove both
heat and humidity. Don't turn your system off even though you will be
away all day. On a hot day, your system may have to operate between 8
to 12 hours to reduce the temperature
in your home to a normal comfort
level.
Keep windows closed after sundown. While the outdoor temperature
at
night may be lower than indoors, the air is generally loaded with mois-
ture which is soaked up by furniture, carpets, and fabrics. This moisture
must be removed when you restart your system.
The hotter the outside temperature,
the greater the load on your sys-
tem. Therefore
do not be alarmed when your system continues to run
after the sun has set on a hot day. Heat is stored in your outside walls
during the day and will continue to flow into your home for several hours
after sunset.
Use your kitchen exhaust fan when cooking.
One surface burner on
"HIGH" requires one ton of cooling. Turn on your bathroom exhaust fan
while showering to remove humidity. However, exhaust fans should not
be run excessively.
It would decrease
efficiency
by removing
condi-
tioned air.
You can also help your system in the summer by closing drapes
or
blinds and by lowering awnings on windows that get direct sunlight.
2
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