Bryant Quantum Plus CENTRAL AIR CONDITIONER - Manual (Page 4)

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the level you select. Most thermostats
have three controls: a temperature control
selector, a FAN control, and a SYSTEM
or MODE control.
The temperature control selector can be a
dial, lever, or set of buttons that allows
you to establish the degree of temperature
you wish to maintain for your personal
comfort. Some thermostats possess
two temperature control selectors: one for
setting the temperature desired during the
cooling cycle, and one to set the heating
operation temperature.
The FAN control offers two options for
controlling the indoor blower: AUTO and
ON. When set to AUTO, the blower runs
only while the thermostat operates the
cooling or heating section. When set to
ON, the blower runs continuously—
regardless of whether the cooling or
heating section is operating.
Typically, the SYSTEM or MODE con-
trol on your thermostat offers the fol-
lowing selections: COOL, OFF, and
HEAT. Your thermostat may also have a
fourth selection, AUTO. Neither the
cooling or heating section will operate
when the SYSTEM or MODE control is
set to OFF. With the SYSTEM or
MODE control set to COOL, the cool-
ing section of your comfort system will
operate when the indoor temperature
rises above the level that you wish to
maintain. With the SYSTEM or MODE
control set to HEAT, the heating section
will operate automatically when the
indoor temperature falls below the level
that you have selected.
The AUTO selection found on some ther-
mostats provides for automatic
changeover between cooling and heating
cycles. With the SYSTEM or MODE
control set to AUTO, the cooling section
will operate when the indoor temperature
rises above the thermostat cooling tem-
perature setting, and the heating section
will operate when the indoor temperature
drops below the thermostat setting for the
heating cycle.
Your thermostat may be PROGRAM-
MABLE or NON-PROGRAMMABLE.
A NON-PROGRAMMABLE thermo-
stat does not allow the temperature set-
tings to be varied throughout the day or
week without physically changing the
settings. A PROGRAMMABLE thermo-
stat allows various daily temperature
changes to be preset. During the winter,
for example, you may wish to set back
the temperature of your home at night,
then have the temperature return to
normal prior to waking up. The home’s
temperature can then be lowered again
during the day when no one is at home,
but again be at peak comfort level when
your family returns home. During the
summer, the opposite changes might be
programmed. When properly used, the
programming can result in energy sav-
ings on your home’s heating and cooling.
COOLING CYCLE
When operating in the cooling cycle,
your air conditioner runs until the indoor
temperature is lowered to the level you
have selected. On extremely hot days,
your conditioner will run for
longer periods at a time and have
shorter off periods than on moderate
days.
The following are typical conditions
that add extra heat and/or humidity to
your home and force your cooling unit
to work longer to keep your home
comfortable:
• Entrance doors are frequently opened
and closed
• Laundry appliances are being operated
• A shower is running
• More than the usual number of people
are present in the home
• More than the normal number of elec-
tric lights are in use
• Drapes are open on the sunny side of
the home
HEATING CYCLE
With the SYSTEM or MODE control of
your indoor thermostat set to HEAT, the
heating section of your home comfort
system will operate until room tem-
perature is raised to the level you have
selected. Of course, the heating unit will
have to operate for longer periods to main-
tain a comfortable environment on cooler
days and nights than on moderate ones.
Refer to your furnace User’s Manual
for specific information on heating
operation.
PERFORMING ROUTINE
MAINTENANCE
With the proper maintenance and care,
your air conditioning unit will operate
economically and dependably. Mainte-
nance can be accomplished easily by
referring to the following directions.
However, before performing mainte-
nance, consider these important safety
precautions:
CHECK THE AIR FILTER
A dirty air filter will cause excessive
strain on the compressor and blower
motor. This can cause the components to
overheat and automatically shut down. In
the extreme, the components will fail and
need to be replaced. To avoid inefficient
or failed operation of your unit, CHECK
THE FILTER(S) EVERY 3 TO 4
WEEKS. Replace filter(s) when neces-
sary, or clean the filter(s) if you have the
reusable type.
Disposable filters should be replaced
by similar, new filters of the same
dimensions.
WARNING
To prevent personal injury, or
death, disconnect all electrical
power to the air conditioner be-
fore removing access panels or
performing any maintenance.
Disconnect power to both the
indoor and outdoor units. Note:
There may be more than 1 elec-
trical disconnect switch.
CAUTION
Although special care has been
taken to minimize sharp edges
in the construction of your unit,
be extremely careful when han-
dling parts or reaching into the
unit.
!
!
Fig. 4—Main Electrical
Disconnect
Fig. 5—Removing Filter
from Fan Coil Unit
MAIN
ON
OFF