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NOTE TO INSTALLER: THIS MANUAL SHOULD BE LEFT WITH THE EQUIPMENT USER.
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 latest in engineering development and the culmination 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 a fe w minutes with this booklet no w. Learn about
the operation of your air conditioner , and the small amount of
maintenance it takes to keep it operating at peak efficiency.
With minimal care, your ne w air conditioner will provide you and
your family with cool comfort—both now and for years to come.
SAFETY CONSIDERATION
Recognize safety information. This is the safety-alert symbol .
When you see this symbol on the unit or in instructions and manuals, be alert to the potential for personal injury.
Understand the signal word DANGER, WARNING, or CAUTION. These words are used with the safety-alert symbol.
DANGER identifies the most serious hazards which
in severe personal injury or death. WARNING signifies hazards that
is used to identify unsafe practices which
personal injury or product and property damage.
could result in personal injury or death. CAUTION
would result in minor
!
WARNING
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.
will result
!
Fig. 1—Typical Split-System Installation
!
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 you
have. This knowledge will be useful 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, as shown in Fig. 1.
Each unit has a rating plate affixed to it. A rating plate
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.
IMPORTANT FACTS
To better protect your investment and to eliminate unnecessary
service calls, familiarize yourself with the follo wing facts:
• Y our air conditioning system should ne ver be operated without
a properly installed clean air filter . Plan to inspect the fi lter 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 grilles. Restricted airflow lessens the unit’ s ef ficiency and shortens its 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 accumulate 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 control
the system by other means—for instance, switching the
electrical supply power on and of f—may cause damage to the
unit.
• 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 oper ation minimizes any temperature dif ferences. Also, systems
equipped with electronic air cleaners and/or humidifiers of fer the
added benefits of having the air continuously cleaned year -round,
and humidified during the winter season.
• Your air conditioner will remov e 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. Do not expect to see much drainage if you li ve
in a very dry en vironment.
• Do not operate your unit when outdoor temperature is belo w
55°F .
2
LCD READOUT DISPLAYS
CURRENT ROOM TEMPERATURE,
DESIRED ROOM TEMPERATURE,
UNIT MODE SETTING,
AND FAN MODE SETTING
PROGRAM BUTTONS
FOR PROGRAMMING
HEATING/COOLING
CYCLES
MODE BUTTON SELECTS
BETWEEN OFF, HEAT,
COOL, AND AUTO
OPERATION
LCD READOUT DISPLAYS
CURRENT ROOM TEMPERATURE,
DESIRED ROOM TEMPERATURE
OR OUTDOOR TEMPERATURE,
UNIT MODE SETTING,
FAN MODE SETTING,
AND TIME OF DAY
Thermostat
RESET/FILTER
FAN
MODE
MODE BUTTON SELECTS
BETWEEN OFF, HEAT,
COOL, AND AUTO OPERATION
RESET FILTER BUTTON
RESTARTS THE TIMER
THAT CALCULATES
THE NEXT AIR FILTER
CHANGE OR CLEANING
FAN BUTTON CHOOSES
BETWEEN ON OR AUTO
FAN OPERATION
Fig. 2—Typical Non-Programmable
Thermostat
OPERATING YOUR AIR CONDITIONER
The operation of your air conditioning system is controlled by
the indoor thermostat. Simply adjust the thermostat to maintain
the indoor temperature at the lev el you select. Most thermostats
have three controls: the temperature, FAN, and mode selectors.
The temperature selector could be a dial, lever, or buttons that
allow you to establish the degree of temperature that 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 button offers two options for controlling the blower;
AUTO and ON. When set to AUTO, the blower will run only
while the thermostat operates the cooling or heating section.
When the FAN is set to the ON position, the blower will run
continuously—regardless of whether the cooling or heating section is operating.
T ypically , the MODE button on your thermostat of fers the following selections; COOL, OFF , and HEA T . Y our thermostat may also
have a fourth selection, A UT O. Neither the cooling nor heating
section will operate when the MODE is set to the OFF position.
With the MODE set to COOL, the cooling section of your comfort
system will operate when the indoor temperature rises abov e the
level that you wish to maintain. W ith the MODE set to HEAT, the
heating section will operate automatically when the indoor temperature falls below the le v el that you have selected.
The AUTO selection found on some thermostats pro vides for automatic changeover between cooling and heating c ycles. With the
MODE set to AUTO, the cooling section will operate when the
indoor temperature rises above the thermostat cooling temperature
setting, or the heating section will operate when the indoor temper ature drops below the thermostat setting for the heating c ycle.
NOTE:
features built in to protect the unit.
• 5-MINUTE TIME DELAY—Unit will delay operation upon
initial start-up or short cycling of the indoor thermostat.
• 1-MINUTE TIME DELAY—When changing speeds from
low to high, or high to low, there is a 1-minute time delay. During the speed change delay, the outdoor fan will continue to run.
• 2-MINUTE LOW-SPEED MINIMUM—If the unit has not
operated within the past 30 minutes, upon the next cooling
demand it will operate for a minimum of 2 minutes on low speed.
If you wish to program your accessory electronic indoor thermostat, refer to thermostat Installation Instructions.
Y our 2-speed air conditioning system has se veral special
UP AND DOWN
BUTTONS INCREASE
OR DECREASE THE
DESIRED TEMPERATURE
SETTINGS
Programmable
Thermostat
MODE
PROGRAM
COPY PREVIOUS DAY
CHANGE DAY
SET TIME/TEMP
SET TIME
BUTTON
RESET FILTER BUTTON
RESTARTS THE TIMER
THAT CALCULATES
THE NEXT AIR FILTER
CHANGE OR CLEANING
FAN
END
HOLDRESET FILTER
HOLDRESET FILTER
FAN BUTTON CHOOSES
BETWEEN ON OR AUTO
FAN OPERATION
HOLD BUTTON MAINTAINS
THE CURRENT TEMPERATURE
AND OVERRIDES PROGRAMMED
TEMPERATURE CHANGES
UNTIL RESET
UP AND DOWN
BUTTONS INCREASE
OR DECREASE THE
DESIRED TEMPERATURE
SETTINGS
Fig. 3—Typical Programmable Thermostat
COOLING CYCLE
When operating in the cooling cycle, your air conditioner will
run until the indoor temperature is lowered to the le vel you ha ve
selected. On extremely hot days, your air conditioner will run
for longer periods at a time and have shorter “off” periods than
on moderate days.
The following conditions typically add e xtra heat and/or humidity to your home and make your cooling unit work longer to k eep
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
HEATING CYCLE
With the MODE of your indoor thermostat set to HEAT, the
heating section of your home comfort system will operate until
room temperature is raised to the lev el you have selected. Of
course, the heating unit will have to operate for longer periods
to maintain 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 proper maintenance and care, your air conditioning unit
will operate economically and dependably . Maintenance can be
accomplished easily by referring to the following directions.
Howev e r, before performing maintenance, consider these
important safety precautions
!
WARNING
To prevent personal injury or death disconnect all
electrical power to the air conditioner before removing access panels to perform maintenance.
Disconnect power to both the indoor and outdoor
units. Note: there may be more than 1 electrical
disconnect switch.
3
MAIN
ON
OFF
Fig. 4—Main Electrical Disconnect
!
CAUTION
Although special care has been taken to minimize
sharp edges in the construction of your unit, be
extremely careful when handling parts or reaching
into the unit.
CHECK THE AIR FILTER
A dirty air filter will cause excessi ve strain on the compressor
and blower motor. This can cause the components to overheat
and automatically shut down. In the e xtreme, the components
will fail and need to be replaced. To avoid in-efficient operation
or failure of your unit, CHECK THE FILTER(S) EVERY 3 T O
4 WEEKS. Replace filter(s) when 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 REINST ALLED. T o a void prolonged shutdown of your
unit while a filter is drying, you should hav e an extra filter on
hand, allowing you to rotate between the 2 with minimal downtime 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 cover plate by sliding
latches toward center of plate. Lift filter to clean lower flange.
Filter is spring-loaded and will “pop out. ” Reinstall fi lter , being
certain to secure filter behind lower flange. When reinstalling
cover 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 scre ws from return-air grille.
Fig. 5—Removing Filter from
Fan Coil Unit
INDOOR COIL
If the split-system coil has only been operated with a clean filter
in place, it should require minimal cleaning. You may use a vacuum cleaner and soft brush attachment to remov e any accumulation of dust from the top and underside of the finned coil
surface. Howe ver , only perform this maintenance when the coil
is completely dry.
If you cannot get the coil clean by this method, call your dealer for
service. It may be necessary to clean the coil with a detergent solution and rinse it with water , which could require removing the coil.
You should not attempt this yourself.
OUTDOOR COIL
If grass clippings, leaves, shrubbery, and debris are kept away
from the outdoor unit, minimal care should be sufficient to k eep
the system functioning properly . For proper drainage, debris must
be removed periodically from the base pan. However, if the outdoor coil becomes dirty , use a brush or vacuum cleaner and soft
brush attachment to clean the exterior surface. 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 remo 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 corrosiv e to
most metals. Although your new unit is made out of galv anized
metal and is protected by top grade paint, you should take the
precaution of additional maintenance by periodically washing
the unit. By washing all exposed surfaces and coil approximately every 3 months, you will add life to your unit. Please
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 shifts or settles so that the unit is no longer
level, you should correct the condition. Relevel it promptly to
assure condensate drainage out of the unit. If you notice that
water or ice collects beneath the unit, arrange for it to be drained
away from the unit.
4
5
BEFORE YOU REQ UEST A SERVICE CALL
BEFORE YOU CALL FOR SERVICE, CHECK FOR
THESE EASILY SOLVED PROBLEMS:
• Check the indoor and outdoor disconnect switches. Verify that
circuit breakers are on or that fuses have not blown.
• Check for sufficient airflow. Check the air filter(s) for any
accumulations of dirt. Check for blocked return-air or supplyair grilles. Be sure grilles are open and unobstructed.
• Check the settings on your indoor thermostat. If you desire
cooling, see that the temperature set point is set below room temperature and the MODE is set to COOL or AUTO. If you require
heat, be sure the desired temperature set point is set above room
temperature and the MODE is HEAT or AUTO. The FAN
should be set to ON for continuous blower operation or AUTO
if you wish blower to function only while the unit is operating.
• Check note concerning special features and time delays in
“Operating Your Air Conditioner” section.
If your comfort system still fails to operate, contact your servicing dealer for troubleshooting and repairs. Specify your apparent
problem, and state the model and serial numbers of your equipment. (You should hav e them recorded on page 6 of this booklet.) With this information, your dealer may be able to offer
helpful suggestions over the phone or sa ve valuable time through
knowledgeable preparation for the service call.
• 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 individual 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.
Your servicing dealer may offer an economical service contract
that covers seasonal inspections. Ask for further details.
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 if
you ever require information or service.
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 ev ery other year)
should include the following:
• Routine inspection of air filter(s). Replacement or cleaning as
required.
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:
Product No.
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.
6
7
TO OBTAIN INFORMATION ON PARTS: Consult your installing dealer or classified section of your local telephone directory under the
“Heating Equipment’’ or “Air Conditioning Contractors & Systems’’ headings 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
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations .
Form: OM38-44 Printed in the U.S.A. PC 101 11-98 Catalog No. 563-756
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