Carrier 38CKC036, 38CKC, 38CKC048, 38CKC042 User Manual
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.
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. T o assure its dependability , spend just a few 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 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 D ANGER, WARNING, or CAUTION. These words are used with the safety-alert symbol. D ANGER identifies the most serious hazards which
severe personal injury or death. WARNING signifies hazards
that
could result in personal injury or death. CA UTION is used
to identify unsafe practices which
al injury or product and property damage.
!
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.
would result in minor person-
will result in
!
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 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 inv estment 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 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 grilles. Restricted airflow lessens the unit’ s ef ficiency and life span.
• The outdoor unit must have unrestricted airfl o w. Do not cover
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 f amiliarize yourself
with its proper operation. Attempting to control the system by
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 temperature
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 pockets 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 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 reco v ery v entilator
offers the advantage of exhausting stale air from the home and
allowing fresh air in from the outdoors while minimizing heat
loss.
2
3
LCD READOUT DISPLAYS
CURRENT ROOM TEMPERATURE,
DESIRED ROOM TEMPERATURE,
UNIT MODE SETTING,
AND FAN MODE SETTING
Thermostat
RESET/FILTER
UP AND DOWN
BUTTONS INCREASE
OR DECREASE THE
FAN
MODE
MODE BUTTON SELECTS
BETWEEN OFF, HEAT,
COOL, AND AUTO OPERATION
DESIRED TEMPERATURE
SETTINGS
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—Carrier Non-Pr ogrammab le Thermostat
• Y our system may also be equipped with a zoning system which
allows individual control o v er the temperatures of separate areas
of your home.
• Y our air conditioner remo ves 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 live in a v ery dry environment.
• Do not operate your unit when outdoor temperatures are belo w
55°F .
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 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 for cooling operation, and one for setting the temperature desired for heating operation.
The FAN control offers two options for controlling the indoor
blower: AUTO and ON. When set to A UTO, the blower runs
only while the thermostat operates the cooling or heating equipment. When set to ON, the blower runs continuously—regardless 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 HEAT. Your
thermostat may also have a fourth selection, AUTO. Neither the
cooling nor heating equipment will operate when the SYSTEM
PROGRAM BUTTONS
FOR PROGRAMMING
HEATING/COOLING
CYCLES
Fig. 3—Carrier Programmable Thermostat
Programmable
Thermostat
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
MODE BUTTON SELECTS
BETWEEN OFF, HEAT,
COOL, AND AUTO
OPERATION
MODE
PROGRAM
FAN
END
HOLDRESET FILTER
HOLDRESET FILTER
HOLD BUTTON MAINTAINS
THE CURRENT TEMPERATURE
AND OVERRIDES PROGRAMMED
TEMPERATURE CHANGES
UNTIL RESET
LCD READOUT DISPLAYS
CURRENT ROOM TEMPERATURE,
DESIRED ROOM TEMPERATURE
OR OUTDOOR TEMPERATURE,
UNIT MODE SETTING,
FAN MODE SETTING,
AND TIME OF DAY
FAN BUTTON CHOOSES
BETWEEN ON OR AUTO
FAN OPERATION
UP AND DOWN
BUTTONS INCREASE
OR DECREASE THE
DESIRED TEMPERATURE
SETTINGS
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