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MAIN
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Fig. 4reMain Electrical Disconnect
ccnatrolselectors: one for setting the temperature desired during
cooling operation, and one for setting the temperature forheating
operation.
The FAN control oilers two options for comrolling the blower:
AI_FFOand ON. When set toAUTO, the blower runs only wMe the
thennostat operates the cooling orheating equipment. When the
FAN comrol is setto ON, the blower runs continuously regardless
of whether the cooling or heating equiplnent is operating.
Typically, the SYSTEM or MODE comrol on your therlnostat
oilers the following selections: COOL, OFF, and HEAT. Your
therlnostat may also have a fourth selection: AUTO. Neither the
cooling or heating equiplnent operate when the SYSTEM or
MODE comrol is set m OFE With the SYSTEM or MODE
ccnatrolset to COOL, your air conditioner will operate when the
indoor temperature rises above the level that you wish to maintain.
With the SYSTEM or MODE control set m HEAT, your fimmce
or other heating equiplnent will operate autolnatically when the
indoor telnperamre fhlls below the level that you have selected.
The AUTO selection found on some therlnostats provides for
autolnatic changeover between cooling and heating lnodes. With
the SYSTEM or MODE control set to AUTO, your air condi-
tioner will operate when the indoor telnperature rises above the
therlnostat cooling telnperature setting, and your furnace or oth-
er heating equiplnent will operate when the indoor telnperature
drops below the therlnostat setting for the heating cycle.
NOTE: For 2-speed air conditioners, this special feature is built
in to protect the unit:
• 1-MINUTE TIME DELAY When changing speeds froln
low to high, or high to low, there is a 1-lninute time delay. During
the speed change delay, the oudoor thn will continue to run.
If you wish to prograln your accessory electronic indoor ther-
lnostat, refer to therlnostat Installation Instructions.
Your therlnostat may be PROGRAMMABLE or NON-PRO-
GRAMMABLE. A NON-PROGRAMMABLE therlnostat does
not allow the telnperature settings to be varied tluoughout the day
or week witlxmt physically changing the settings. A PROGRAM-
MABLE therlnostat allows various daily telnperature changes to
be preset. During the winter, for example, you may wish to "set
back" the telnperature of your holne at night, flaenhave the tem-
perature return to norlnal prior to waiting up. The holne's temper-
amre can then be lowered again during the day when no one is at
holne, but again be at peak COlnfortlevel when your thmily
returns holne. During the smraner, the opposite changes lnight be
progralrnned. When properly used, the progralraning can result in
energy savings on your holne's heating and cooling.
COOLING MODE
When operating in cooling lnode, your air conditioner will mn
until the indoor telnperamre is lowered to the level you have
selected. On extremely hot days, your air conditioner will mn
for longer periods at a time and have shorter off periods than on
lnoderate days.
The following are typical conditions that add extra heat
and/or humidity to your holne and force your cooling unit to
work longer to keep your holne COlnfortable:
• Entrance doors are fi_equently opened and closed.
• Laundry appliances are being operated.
• A shower is rulming.
• More than the ustml number of people are present in the home.
• More than the norlnal number of electric lights are in use.
• Drapes are open on the sulmy side of the holne.
HEATING MODE
With the SYSTEM or MODE control of your indoor therlnostat
set to HEAT, the furnace or other heating equiplnent of your
holne COlnfort system will operate until room telnperature is
raised to the level you have selected. Of course, the heating
equipment will have to operate for longer perio& to lnaintain a
COlnfortable enviromnent on cooler days and nights than on
lnoderate ones.
Refer to your furnace User's Manual for specific inforlnation on
heating operation.
NOTES: a) Two-speed air conditioners operate for long periods
of time on low speed. This operation ilnproves system efficiency
and your COlnforttluough closer control of telnperature and
humidity. Expect longer operating cycles.
b) With two-speed air conditioners, low and high indoor airflow
settings are critical for lnaintaining system comfort and efficien-
cy. Consult your installer for airflow setting adjustlnents.
PERFORMING ROUTINE
MAINTENANCE
With the proper lnaintenance and care, your air conditioner will
operate economically and dependably. Maintenance can be
accolnplished easily by referring to the following directions.
Fig. 5mRemoving Filter from
Fan Coil Unit
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