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CENTRAL AIR CONDITIONER
A GUIDE TO OPERATING AND MAINTAINING YOUR RESIDENTIAL AIR CONDITIONING UNIT.
NOTE TO INSTALLER: THIS MANUAL SHOULD BE LEFT WITH THE EQUIPMENT USER.
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WELCOME TO EFFICIENT HOME
COOLING COMFORT
Congratulations on your excellent choice and sound in vestment
in home cooling comfort!
Y our ne w air conditioning unit represents both the la test in engineering development and the culmina tion of many years of
experience from one of the most reputable manufacturers of
comfort systems.
Your new unit is among the most energy-efficient and reliable
air conditioning products av ailable today. To assure its dependability , spend just a f ew minutes with this booklet now. Learn
about the operation of your air conditioner , and the small amount
of maintenance it takes to keep it operating at its peak ef ficiency .
With minimal care, your new air conditioner will provide you
and your family with cool comfort — both now and for years to
come.
!
WARNING
®
Fig.1 — Typical Split-System
Installation
Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion,
fire, electrical shock, or other conditions which
may cause personal injury or property damage.
Consult a qualified installer, service agency, or
your distributor or branch for information or assistance. The qualified installer or agency must
use factory-authorized kits or accessories when
modifying this product.
!
WARNING
To prevent personal injury, death, or property
damage, read and follow all instructions and
warnings, including labels shipped with or attached to the unit before operating your new air
conditioner.
YOUR COMFORT SYSTEM
Identifying Y our System
T ake the time to familiarize yourself with the type of system y ou
have. This knowledge will be of use in understanding the basic
operation of your new air conditioner.
The split-system type has an indoor and an outdoor unit, each of
which contains a coil. These units are interconnected by refrigerant tubes. (See Fig. 1.)
Each unit has a rating plate affixed to it which provides
necessary information for specific identification of a unit. You
should familiarize yourself with the product, model, and serial
numbers listed on each rating plate. Record them for future reference on the last page of this booklet.
IMPORTANT FACTS
To better protect your investment and to elimina te unnecessar y
service calls, familiarize yourself with the follo wing facts:
• Y our air conditioning system should ne ver be oper ated without
a clean air filter properly installed. Plan to inspect the filter periodically . A clogged air filter will increase operating costs and
shorten the life of the unit.
• Supply-air and return-air registers should not be blocked.
Drapes, furniture, and toys are some of the items commonly
found obstructing registers. Restricted airflow lessens the unit’s
efficiency and life span.
• The outdoor unit must have unrestricted airfl o w. Do not cov er
the unit, lean anything against it, or stand on it. Do not allo w grass
clippings, leaves, or other debris to accum ulate around or on top
of the unit. Maintain a 12-in. minimum clearance between the
outdoor unit and tall grass, vines, shrubs, etc.
• Your multipurpose indoor thermostat is the control center for
your air conditioning system. You should familiarize yourself
with its proper operation. Attempting to contr ol the system b y
other means — for instance, switching the electrical supply po wer ON and OFF — may cause damage to the unit.
• Thermostat “jiggling” causes rapid-cycling, which is potentially damaging to the compressor . Do not mo v e the temper ature
selector on the thermostat for any reason for at least 5 minutes
after the compressor has shut off.
• You may find that you can maintain greater personal comfort
by running the fan continuously. “ Air pock ets” can form due to
the structure of the house, placement of registers, etc. These air
pockets may be too cool or warm for your liking. Continuous fan
operation minimizes any temperature dif ferences. Also, systems
equipped with electronic or mechanical air cleaners and/or
humidifiers offer the added benefits of ha ving the air continuously
cleaned year-round, and humidified during the winter season.
• A system equipped with a heat or energy recov ery v entilator
offers the advantage of e xhausting stale air fr om the home and
allowing fresh air in from the outdoors while minimizing heat
loss.
• Y our system may also be equipped with a z oning system which
allows individual contr ol ov er the temper atures of separate areas
of your home.
• Y our air conditioner remov es humidity from your home during
the cooling season. After a fe w minutes of operation, you should
be able to see water trickle from the condensate drain of the cooling coil. Check this occasionally to be sure the drain system is not
clogged. Of course, don’t expect to see much drainage if you li ve
in a very dry environment.
• Do not operate your unit when outdoor temperatures are below
55
F.
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LCD READOUT DISPLAYS
CURRENT ROOM TEMPERATURE,
DESIRED ROOM TEMPERATURE,
RESET FILTER BUTTON
RESTARTS THE TIMER
THE NEXT AIR FILTER
CHANGE OR CLEANING
UNIT MODE SETTING,
AND FAN MODE SETTING.
THAT CALCULATES
RESET/FILTER
MODE
FAN
MODE BUTTON SELECTS
BETWEEN OFF, HEAT,
COOL, AND AUTO
OPERATION.
FAN BUTTON CHOOSES
BETWEEN ON OR AUTO
FAN OPERATION
UP AND DOWN
BUTTONS INCREASE
OR DECREASE THE
DESIRED TEMPERATURE
SETTINGS.
Fig. 2 — Carrier Non-Pr ogrammable Thermostat
OPERATING YOUR AIR CONDITIONER
The operation of your air conditioning system is controlled by
the indoor thermostat. You simply adjust the thermostat and it
maintains the indoor temperature at the lev el you select. Most
thermostats have 3 controls: a temperature control selector, a
FAN control, and a SYSTEM or MODE control.
The temperature control selector is a dial, lev er, or set of b uttons
that allows you to establish the degree of temper ature you wish
to maintain for your personal comfort. Some thermostats possess 2 temperature control selectors: 1 for setting the temperature desired for cooling operation, and 1 for setting the
temperature desired for heating operation. Typical settings are
78
F for cooling and 68 ° F for heating.
MODE BUTTON SELECTS
BETWEEN OFF, HEAT,
COPY PREVIOUS DAY
COOL, AND AUTO
OPERATION.
MODEPROGRAM
FANEND PROGRAMCHANGE DAY
HOLDRESET FILTERSET TIME
PROGRAM BUTTONS
FOR PROGRAMMING
HEATING/COOLING
CYCLES.
The FAN control offers 2 options for controlling the indoor
blower: AUT O and ON . When set to AUTO, the blo w er runs
only while the thermostat operates the cooling or heating equipment. When set to ON, the blo wer runs continuously — re gardless of whether the cooling or heating equipment is operating.
Typically, the SYSTEM or MODE control on your thermostat
offers the following selections: COOL, OFF, and HEA T. Your
thermostat may also have a fourth selection, A UT O. Neither the
cooling nor heating equipment will operate when the SYSTEM
or MODE control is set to OFF. With the SYSTEM or MODE
control set to COOL, your air conditioner will operate when the
indoor temperature rises above the level that you wish to maintain. W ith the SYSTEM or MODE control set to HEA T , the heating unit of your home comfort system will operate automatically
LCD READOUT DISPLAYS
CURRENT ROOM TEMPERATURE,
DESIRED ROOM TEMPERATURE
OR OUTDOOR TEMPERATURE,
UNIT MODE SETTING,
FAN MODE SETTING,
AND TIME OF DAY.
UP AND DOWN
BUTTONS INCREASE
OR DECREASE THE
DESIRED TEMPERATURE
SETTINGS.
RESET FILTER BUTTON
RESTARTS THE TIMER
THAT CALCULATES
THE NEXT AIR FILTER
CHANGE OR CLEANING
Fig. 3 — Carrier Pr ogrammable Thermostat
SET TIME
BUTTON
FAN BUTTON CHOOSES
BETWEEN ON OR AUTO
FAN OPERATION
HOLD BUTTON MAINTAINS
THE CURRENT TEMPERATURE
AND OVERRIDES PROGRAMMED
TEMPERATURE CHANGES
UNTIL RESET.
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HEATING MODE
MAIN
ON
With the SYSTEM or MODE control of your indoor ther mostat set to HEAT, the heating unit of your home comfort system operates until room temperature is raised to the lev el you
have selected. Of course, the heating unit will ha ve to operate
for longer periods to maintain a comfortable environment on
cooler days and nights than on moderate ones.
Refer to your heating unit User’ s Manual for specifi c information on heating operation.
OFF
Fig. 4 — Main Electrical Disconnect
when the indoor temperature falls below the le v el that you hav e
selected.
The AUTO selection found on some thermostats provides for
automatic changeover between cooling and heating equipment
operation. W ith the SYSTEM or MODE control set to A UTO,
your air conditioner will operate when the indoor temperature
rises above the thermostat cooling temperature setting, or the
heating section will operate when the indoor temperature drops
below the thermostat setting for the heating cycle.
Your thermostat may be PR OGRAMMABLE or NON-PROGRAMMABLE. A NON-PROGRAMMABLE thermostat does
not allow the temperature settings to be varied throughout the
day or week without physically changing the settings. A PROGRAMMABLE thermostat 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 w aking up. The
home’s temper ature can then be lowered again during the day
when no one is at home, but again be at peak comfort le vel when
your family returns home. During the summer , the opposite
changes might be programmed. When properly used, the programming can result in energy savings on y our home’s heating
and cooling.
COOLING MODE
When operating in cooling mode, your air conditioner runs until
the indoor temperature is lowered to the le vel you hav e 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 electric lights are in use
• Drapes are open on the sunny side of the home
PERFORMING ROUTINE
MAINTENANCE
With the proper maintenance and car e, your air conditioning unit
will operate economically and dependably . Maintenance can be
accomplished easily by referring to the following directions.
Howev er, before performing maintenance, consider these
important safety precautions:
• DISCONNECT ALL ELECTRICAL POWER TO THE
INDOOR AIR HANDLER OR FURNACE BEFORE REMOVING ACCESS PANELS OR PERFORMING ANY MAINTENANCE. Disconnect po wer to both the indoor and outdoor units.
NOTE: THERE MAY BE MORE THAN 1 ELECTRICAL DISCONNECT SWITCH.
• ALTHOUGH SPECIAL CARE HAS BEEN TAKEN TO
MINIMIZE SHARP EDGES IN THE CONSTRUCTION OF
YOUR UNIT, BE EXTREMELY CAREFUL WHEN HANDLING PAR TS OR REACHING INTO THE UNIT.
CHECK THE AIR FILTER
A dirty air filter will cause excessive strain on the compressor
and blower motor . This can cause these components to o verheat
and automatically shut down. In the worst case, these 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) w hen necessary, or clean the
filter(s) if you have the reusable type.
Disposable filters should be replaced by similar , new filters of
the same dimensions.
Reusable, permanent filters should be washed in a solution of cold
water and mild detergent, then rinsed and thoroughly dried. THE
FILTER MUST BE COMPLETELY DRY BEFORE BEING
REINSTALLED. To avoid prolonged shutdown of your unit
while a filter is drying, you should have an e xtra filter on hand.
This allows you to rotate between the 2 with minimal do wntime
for your comfort system. Extra filters may be purchased from your
dealer.
There are no filters in the outdoor unit of a split-system. If your
indoor unit is a gas or oil furnace, refer to your furnace User’s
Manual for filter location and procedures for replacement or
cleaning.
If your system includes an indoor fan coil unit, the filter may be
located in the unit where it connects with the return-air duct or
plenum. (See Fig. 5.) Remove the filter co v er plate by sliding
latches toward center of plate. Lift filter to clear lo wer flange. Filter is spring-loaded and will “pop out.” Reinstall filter, being certain to secure filter behind lower flange. When reinstalling co v er
plate, secure plate behind upper flange then slide tabs outward.
The indoor fan coil unit may be located in the attic. In this instance
the filter could be located behind the return air grille. Access the
filter by removing 2 screws from return air grille.
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Fig. 5 — Removing Filter from
Fan Coil Unit
If your system includes an electronic air cleaner, refer to air
cleaner user’s manual for proper filter cleaning or r eplacement.
INDOOR COIL
If the split-system coil has only been operated with a clean filter
in place, it should require minimal cleaning.
If coil cleaning is required, call your dealer for service. It may be
necessary to clean the coil with a detergent solution and rinse it
with water . This could require the remov al of the coil. You should
not attempt this yourself.
water or ice collects beneath the unit, arrange for it to be drained
away from the unit.
BEFORE YOU REQUEST A
“SERVICE CALL”
CHECK FOR THESE EASILY SOLVED
PROBLEMS:
• Check the indoor and outdoor disconnect switches. Verify that
circuit breakers are ON or that fuses hav e not blo wn.
• Check for sufficient airflow. Check the air filter(s) for any accumulations of dirt. Check for blocked return-air or supply-air registers. Be sure registers are open and unobstructed.
• Check the settings on your indoor thermostat. If you desire
cooling, make sure that the temperature control selector is set
below room temperature and the SYSTEM or MODE control is
set to COOL or AUT O. If you require warmth, make sure that the
temperature control selector is set above room temperature and
the SYSTEM or MODE control is set to HEAT or A UT O. The
F AN control should be set to ON for continuous blower operation
or A UT O if you wish blower to function only while the heating or
cooling equipment is operating.
If your comfort system still fails to operate, turn your system of f
and contact your servicing dealer for troubleshooting and
repairs. Specify your apparent problem, and state the model and
serial numbers of your equipment. (You should have them
recorded on the last page of this booklet.) W ith this information,
your dealer may be able to offer helpful suggestions over the
phone or save v aluable time through knowledgeable preparation
for the service call.
OUTDOOR COIL
If grass clippings, leaves, shrubbery , and debris are kept a way from
the outdoor unit, minimal care should be sufficient to k eep the system functioning properly . F or proper drainage, debris must be
removed periodically from the base pan. Ho we v er , if the outdoor
coil becomes dirty , use a vacuum cleaner with soft brush attachment
to clean the exterior surface. Vacuum coil surface using an up and
down motion. Be careful not to bend or damage coil fins.
If dirt is deep in the coil, contact your dealer for service. The outdoor
fan motor may have to be disconnected and the top panel r emo ved
to gain access to the coil for thorough cleaning. Do not attempt this
yourself.
OUTDOOR COIL — SEA COAST
If your unit is located near the ocean, special maintenance is
required. Ocean mist/breeze carries salt, which is corrosive to
most metals. Although y our ne w unit is made out of galv anized
metal and is protected by top-grade paint, you should take the
precaution of additional maintenance which consists of periodically washing the unit. By washing all exposed surf aces and coil
approximately every 3 months, you will be adding additional lif e
to your unit. Consult your installing contractor for proper intervals/procedures for your geographic area or service contact.
UNIT SUPPORT
Your split-system outdoor unit should be maintained in a level
position. If its support should shift or settle so that the unit is no
longer level, you should correct the condition. Rele vel it promptly to assure that water drains out of the unit. If you notice that
REGULAR DEALER MAINTENANCE
In addition to the routine maintenance that you perform, your
home comfort system should be
inspected regularly by a properly
trained service technician. The
inspection (preferably each year,
but at least every other year)
should include the following:
• Routine inspection of air filter(s).
Replacement or cleaning as required.
• Inspection and cleaning of the blower wheel, housing, and
motor.
• Inspection and, if required, cleaning of indoor and outdoor
coils.
• Inspection of the indoor coil drain pan, plus the primary and
secondary drain lines. If supplied, the auxiliary drain pan and
line should be inspected at this time. Service should include
cleaning if required.
• A check of all electrical wiring and connections.
• A check for secure physical connections of indi vidual components within units.
• Operational check of the air conditioning system to determine actual working condition. Necessary repair and/or
adjustment should be performed at this time.
Y our servicing dealer may offer an economical service contr act
that covers seasonal inspections. Ask for further details.
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FOR THE RECORD
Record the model, product, and serial numbers of your new
equipment in the spaces provided. This information, along with
the other ready-reference facts requested, will be necessary
should you ever require information or service.
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INSTALLATION DATA
Date Installed
Dealer Name
Address
City
State Zip
Telephone
SPLIT-SYSTEM
OUTDOOR UNIT:
Product No.
Model No.
Serial No.
INDOOR UNIT OR COIL:
MODULAR INDOOR UNIT, if Applicable:
Blower—Product No .
Model No.
Serial No.
Coil—Product No.
Model No.
Serial No.
Heater—Product No.
Model No.
Serial No.
ACCESSORIES
Product No.
Model No.
Serial No.
Product No.
Product No.
Product No.
Product No.
Product No.
TO OBTAIN INFORMATION ON PARTS: Consult your installing dealer or the classified section of your local telephone directory under the
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations .
Copyright 1997 Carrier Corporation Form: OM38-39 Replaces: OM38-29/OM38-30 Printed in the U.S.A. 9-97 PC 101 Catalog No. 563-842
“Heating Equipment’’ or “Air Conditioning Contractors & Systems’’ heading for dealer listing by brand name.
Have available the Model No., Series Letter, & Serial No. of your equipment to ensure correct replacement part.
Carrier Corporation Indianapolis, IN 46231
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