Carrier 50SX060300, 50SX030300, 50SX042300 Owner’s Manual

Single-Packaged Cooling Units

A Guide to Operating and

Maintaining Your Cooling Unit

50SX

NOTE TO INSTALLER: I

ThinSemanual should be left with the equipment

Models 50SX Single Packaged Cooling Units Without Base Rail

II'!]LV,'l:l-'l,'IP,[el

Before pertbrming recommended maintenance, be sure
main power switch to unti is turned off. Electrical shock
could cause personal injury.

Models 50SX Single Packaged Cooling Units With Optional Base Rail

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

PC 101 Catalog No. 535-00089 Printed in USA Form OM50-38 Pg 1 1-03 Replaces: 50SS,SX-2SO

WELCOME TO EFFICIENT

COOLING COMFORT

Congratulations on your excellent choice and sound invest-

ment in home cooling comibrt!

Your new air conditioner represents both the latest in engi-

neering development and the culmination of many years of

experience fiom one of the most reputable manufacturers of
colnfort systems.

Your new unit is among the most energy-efficient and reli-
able air conditioning products available today. To assure its
dependability, spend,just a few minutes with this booklet no,a:
Learn about the operation of your air conditioner and the
small amount of maintenance it takes to keep it operating at
its peak efficiency.

With minimal care, your air conditioner will provide you and

your family with satisfying home comfort both now and

for years to come.

IMPORTANT FACTS

To better protect your investment and to eliminate unnec-
essary selaTice calls, familiarize yourself with the following

facts:

IV!_WI_'I;t HI_'[et

hnproper installation, adjustment, alteration, service, main-
tenance or use can cause explosion, fire, electrical shock

or other conditions which may cause personal injury or

property damage. Refer to this manual. For assistance

or additional information consult a qualified installer,
service agency, distributor, or branch. The qualified in-

staller or agency must use only factory authorized kits
or accessories when modifying this product.

• Your air conditioning system should never be operated with-
out 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 milles. Restricted airflow lessens the unit's
efficiency and life span.

• Outdoor units must have unrestricted airflow. Do not cover
the unit, lean anything against it, or stand upon it. Do not

allow grass clippings, leaves, or other debris to accumulate
around or on top of the unit. Maintain a 12-in. minimum
ctemance bewveen the outdoor unit and tall _ass, vines, shrubs,

et cetera.

• Your multipurpose indoor thermostat is the control center
for your air conditioning system. You should familiarize your-
self with its proper operation. Attempting to control the sys-
tem by other means t\_rinstance, switching the electrical
supply power ON and OFF may cause damage to the unit.

• Thermostat "jiggling" causes rapid-cycling, which is po-
tentially damaging to the compressor. Do not move the tem-

perature selector on the thermostat t\_rany reason l\_rat least

5 minutes after the compressor has shut off

• You may find that you can maintain reeater personal com-
fort by running the fan continuously. "Air pockets" can form
due to the structure of the building, placement of registers,
et cetera. These air pockets may be too cool or warm for

your liking. Continuous fan operation minimizes aW

temperature diil'erences. Also, systems equipped with elec-
tronic air cleaners and/or hmnidifiers oil'er the added ben-

efits of having the air continuously cleaned year-round, and
humidified during the winter season.

• Your air conditioner will remove humidity fiom your home
during the cooling season. After a few minutes of operation,
you should be able to see water trickle fiom 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 very dry environment.

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 level you se-
lect. Most thermostats for air conditioning systems have three
controls. These are the temperature contxol selectoi; FAN switch,

and SYSTEM switch.
The temperature control selector is a dial or button(s) that allow

you to establish the de_ee of temperature that you wish to
maintain lbr your personal comfort. Some thermostats pos-
sess two temperature control selectors: one for setting the
temperature desired during the cooling cycle, and one to set
the heating operation temperature (if the accessory electric
heater is used). Typical settings are 78 de_ees Fahrenheit

l\_r cooling and 68 degrees for heating.
The FAN switch oilers two options for controlling the blower:

AUTO and ON. When set to AUTO, the blower will mn dur-
ing the time the air conditioner is operating. When the FAN

switch is set at the ON position, the blower will run con-
tinuously.

Typically, the SYSTEM switch on your thermostat oilers the
l\_tlowing selections: COOL, OFF, and HEAT. Your thermo-
stat may also have a fourth selection, AUTO. The air con-
ditioner wilt not operate when the SYSTEM switch is set at
the OFF position. With the SYSTEM switch set at COOL,
the cooling section of your coml\_rt system will operate when
the indoor temperature rises above the level that you wish to
maintain. With the SYSTEM switch set at the HEAT posi-
tion, the accessory electric heater will operate automatically
whenever the indoor temperature falls below the level that
you have selected.

The AUTO selection found on some thermostats provides
for automatic changeover between cooling and heating cycles.
With the SYSTEM switch set in the AUTO position, the cool-
ing mode is activated when the indoor temperature rises above
the thermostat cooling temperature setting, or the heating mode
wilt be activated when the indoor temperature drops below
the thermostat setting for the heating cycle.

COOLING CYCLE

When operating in the cooling cycle, your air conditioner
wilt mn until the indoor temperature is lowered to the level
you have selected. On extremely hot days, your air condi-
tioner 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. Your air conditioner will work longer
to keep your home comfortable under these conditions:

• Entrance doors are frequently opened and closed

• Laundry appliances are being operated

• A shower is running