Carrier 38EZA Guide, 38TDB Guide, 38TXA Guide, 38TZA Guide User Manual
CENTRAL AIR CONDITIONER
with PURON
A GUIDE TO OPERATING AND MAINTAINING YOUR RESIDENTIAL AIR CONDITIONING UNIT
®
REFRIGERANT
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!
Your new 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. This unit utilizes Carrier’s environmentally
friendly Puron
Your new unit is among the most energy-efficient and reliable
air conditioning products av ailable today. To 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 new air conditioner will provide you
and your family with cool comfort—both no w and for years to
come.
®
refrigerant.
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 works 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 type of air conditioner you have purchased is a split system.
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 which pro vides 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
T o better protect your inv estment and to eliminate unnecessary
service calls, familiarize yourself with the following 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 registers. Restricted airflo w lessens the unit’s
efficiency 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 ve 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
pockets may be too cool or warm for your liking. Continuous f an
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 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—Typical Carrier Non-Programmable 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.
• Your air conditioner will remove 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.
• Your unit is not designed to be operated when outdoor temperatures are lower than 55°F without modification. If operation below this temperature is required, consult your installer.
MODE BUTTON SELECTS
BETWEEN OFF, HEAT,
PROGRAM BUTTONS
FOR PROGRAMMING
HEATING/COOLING
CYCLES
COOL, AND AUTO
OPERATION
OPERA TING 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 F AN control, and a SYSTEM or MODE control. Fig. 2 and 3
show typical Carrier thermostats.
The temperature control selector is a dial, lev er, or set of buttons that
allows you to select the temperature you wish to maintain for your
personal comfort. Some thermostats possess two temperature
LCD READOUT DISPLAYS
CURRENT ROOM TEMPERATURE,
DESIRED ROOM TEMPERATURE
OR OUTDOOR TEMPERATURE,
UNIT MODE SETTING,
FAN MODE SETTING,
AND TIME OF DAY
SET TIME
BUTTON
RESET FILTER BUTTON
RESTARTS THE TIMER
THAT CALCULATES
THE NEXT AIR FILTER
CHANGE OR CLEANING
Fig. 3—Typical Carrier Programmable Thermostat
Programmable
Thermostat
COPY PREVIOUS DAY
CHANGE DAY
SET TIME/TEMP
PROGRAM
END
MODE
HOLDRESET FILTER
FAN
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
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