Carrier 38BRC036 SERIES340, 38CKC036300, 38CKC036360, 38CKC048 SERIES370, 38TKB024 SERIES300 Owner’s Manual

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NOTE TO INSTALLER: THIS MANUAL SHOULD BE LEFTWITH THE EQUIPMENT USER.

WELCOME TO EFFICIENT HOME
COOLING COMFORT

Congratulations on your excellent choice and sound investlnent
iu holne cooling COlnfort!

Your new air conditioning unit represents both the latest in engi-
neering developlnent aM the cuhnination of lnany years of
experience fioln one of the lnOStreputable mauu_hcmrers of
COlnfortsystems.

Your new unit is alnong the lnOStenergy-efficient and reliable
air conditioning products available today. To assure its depend-
ability, spend just a few lninutes with this booklet now. Learn
about the operation of your air conditioner, and the small alnount
oflnaintenauce it takes to keep it operating at its peak efficiency.

With lniuilnal care, your new air conditiouer will provide you aud
your Pamilywith cool COlnfort both now and for years to COlne.

SAFETY CONSIDERATION

Recoguize safety inforlnation. This is the safety-alert symbol A.
When you see this symbol on the unit or iu instructions aud lnau-
tmls, be alert to the potential for personal injury

Understand the signal word DANGER, WARNING, or CAU-
TION. These wor& are used with the safety-alert symbol. DAN-

GER ideutifies the lnOStserious hazards whichwill result in
severe personal injury or death. WARNING siguifies hazards

that could result in personal injury or death. CAUTION is used
to identify unsafe practices whichwould result iu minor person-
al injury or product aud property damage.

Improper installation, adjustment, alteration, ser-
vice, 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 as-

sistance. The qualified installer or agency must
use factory-authorized kits or accessories when
modifying this product.

I

Fig.l Typical Split-System Installation

To prevent personal injury, death, or property
damage, read and follow all instructions and

warnings, including labels shipped with or at-
tached to the unit before operating your new air

conditioner.

YOUR COMFORT SYSTEM

Identifying Your System

Tal_ethe time to thmiliarize yourself with the type of system you
have. This kaaowledge 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 retiqg-
erant robes. (See Fig. 1.)

Each unit has a rating plate affixed to it which provides
necessary inforlnation for specific identification of a unit. You
should thmiliarize yourself with the product, lnodel, and serial
nulnbers listed on each rating plate. Record theln for fimlre ref-
erence on the last page of this booklet.

IMPORTANT FACTS

To better protect your investlnent and to elilninate unnecessary
selwice calls, falniliarize yourself with the following facts:

• Your air conditioning system should never be operated witl_mt
a clean air filter properly installed. Plan to inspect the filter peri-
odically. A clogged air filter will iucrease operating costs aud

shorten the life of the unit.

• Supply-air and return-air registers should not be blocked.
Drapes, filrnimre, and toys are some of the items comlnonly
lbund obstructing grilles. Restricted airflow lessens the unit's effi-
ciency aud life span.

• The outdoor unit lnUSthave unrestricted airflow. Do not cover
the unit, lean anything against it, or stand on it. Do not allow grass

clippings, leaves, or other debris to acculnulate around or on top
of the unit. Maintain a 12-iu. lninilnUln clearauce betweeu the

outdoor unit and tall grass, vines, shrubs, etc.

• Your lnultipurpose indoor therlnostat is the comrol center for
your air conditioning system. You should l:amiliarize yourself
with its proper operation. Attelnpting to control the systeln by
other lneaus for instance, switching the electrical supply power
ON aud OFF may cause damage to the unit.

• Therlnostat 'jiggling" causes rapid-cycling, which is potential-
ly dalnaging to the COlnpressor. Do not lnove the telnperature
selector on the therlnostat for any reason for at least 5 lniuutes
after the colnpressor has shut olt_

• You may find that you can lnaintain greater personal colnfort
by rulming the Fancontinuously. Air pockets can form due to the
structure of the house, placelneut of registers, etc. These air pock-
ets may be too cool or warm for your lilting. Continuous l:auoper-
ation lninilnizes any telnperamre differences. Also, systems
equipped with electronic or lnechanical air cleaners and!or
hulnidifiers offer the added benefits of having the air continuously
cleaned year-round, aud hulnidified during the winter season.

• A system equipped with a heat or enel,gy recovery ventilator
offers the advantage of exhausting stale air froln the holne aud
allowing fresh air in fioln the outdoors while miuimizing heat

lOSS.

LCD READOUT DISPLAYS

DESIRED ROOM TEMPERATURE,

AN_"'AMOCc_S_TTT',",%

CURRENT ROOM TEMPERATURE,_ ]

[111 _ _ _ -- UuPT_NDD ,QNV_NEAsE

rl_lll! _Lt _ ,__----_ DESREDTORDECREASETHE

Ther 3_at

..... _ I_._" SET'_,NGSEMPERATURE

RESET FILTER BUTTON AN BUTTON CHOO_

RESTARTS THE TIMER BETWEEN ON OR AUTO

THAT CALCULATES FAN OPERATION

THE NEXT AIR FILTER

CHANGE OR CLEANING

Fig. 2--Carrier Non-Programmable Thermostat

• Your systeln lnay also be equipped with a zoning systeln which
allows indivi&ml control over the telnperamres of separate areas
of your holne.

• Your air conditioner relnoves hulnidity fioln your holne during
the cooling season. After a few lninutes of operation, you shoMd

be able m see water triclde from the condensate drain of the
cooling coil. Check this occasioimlly m be sure the drain system

is not clogged. Of course, doift expect to see lnuch draiimge if
you live in a very dry enviromnent.

• Do not operate your unit when outdoor telnperamres are below
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 telnperamre at the level you select. Most

therlnostats have three controls: a telnperamre control selector,
a FAN control, and a SYSTEM or MODE comrol.

The telnperature control selector can be a dial, lever, or set of
buttons that allows you to establish the degree of telnperature
you wish to lnaintain for your personal COlnfort. Some therlno-
stats possess two telnperature control selectors: one for setting
the telnperature desired for cooling operation, and one for set-
ting the telnperature desired for heating operation.

The FAN control offers two options for controlling the indoor
blower: AUTO and ON. When set to AUTO, the blower runs
only while the therlnostat operates the cooling or heating equip-
ment. When set to ON, the blower runs continuously--regard-
less of whether the cooling or heating equiplnent is operating.

Typically, the SYSTEM or MODE control on your therlnostat
offers the following selections: COOL, OFF, and HEAT. Your
therlnostat may also have a fourth selection, AUTO. Neither the
cooling nor heating equiplnent will operate when the SYSTEM

PROGRAM BUTTONS COOL, AND AUTO ' 8V%%gooyjs_gNZ?J_2E

FOR PROGRAMMING OPERATION UNIT MODE SETTING '

HEATING/COOLING FAN MODE SETTING '

--_ _iODE BUTTON SELECTS/LCD READOUT DISPLAYS

CYCLES AND TIME OF DAY '

BETWEEN OFF HEAT CURRENT ROOM TEMPERATURE,

{ l 1: _ _%o:,=,z _:_,o721_ S:e7_k''.........'%:>;?"l _ ]

L -- 5B ..........

;:"......,=l I

H¥ :: i_. 'pUPANDDOWN

=] 12 [ I (_/I BUTTONS INCREASE

c_ _ _ OR DECREASE THE

I_q , I ilL"Y I DEETSITREDsTEMPERATURE

i-<:....

RESET FILTER BUTTON THHOELDBUTTON TMEAINTARINSuRE

CHANGE OR CLEANING

Fig. 3--Carrier Programmable Thermostat

BUTTON:_J L BENTWoEpEE_AONoONRAUTO

RESTARTS THE TIMER AND OVERRIDES PROGRAMMED

THAT CALCULATES TEMPERATURE CHANGES

THE NEXT AIR FILTER UNTIL RESET