Carrier 50GS Operating And Maintaining Manual

Visit www.carrier.com
A Guide to Operating and Maintaining Your
Single-Packaged Electric Cooling Units
NOTE: Read the entire instruction manual before starting the
installation.

SAFETY CONSIDERATIONS

Note to Installer:This manual should be left with the equipment
user.
Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of these or any other appliances. Failure
to follow this warning could result in fire, serious injury, or
death.
Do not use either of these units if any part has been under
water. Immediately call a qualified service technician to
inspect the unit and to replace any part of the control system
which has been under water. Failure to follow this warning
could result in electrical shock, fire, serious injury, or death.
Before performing recommended maintenance, be sure the
main power switch to unit is turned off and lock-out tag
installed. Electric shock could cause serious injury or death.

STARTING OR SHUTTING UNIT OFF

1. To start this unit:
a. Turn on the electrical power supply to unit.
b. Select temperature and set SYSTEM switch or MODE
control to desired mode.
2. To shut this unit off:
NOTE: If the unit is being shut down because of a malfunction,
call your dealer as soon as possible.
a. Set system SWITCH or MODE control to OFF.
b. Turn off the electrical power supply to unit and install
lock-out tag.

OPERATING YOUR ELECTRIC AIR CONDITIONER

The operation of your system is controlled by the indoor thermo-
stat. You simply adjust the thermostat and it maintains the indoor
temperature at the level you select. Most thermostats have 3
controls: a temperature control selector, a FAN control, and a
SYSTEM or MODE control. Refer to your thermostat owner's
manual for more information.
To better protect your investment and to eliminate unnecessary
service calls, familiarize yourself with the following facts:
Step 1—Cooling Mode
With the SYSTEM or MODE control set to COOL, your unit will
run in cooling mode until the indoor temperature is lowered to the
level you have selected. On extremely hot days, your system will
run for longer periods at a time and have shorter "off" periods than
on moderate days.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
PC 101 Catalog No. 005–00000
Step 2—Heating Mode (with optional electric heaters)
Your system may have optional electric heaters for use when
heating is desired.
With the SYSTEM or MODE control of your indoor thermostat set
to HEAT, your unit will run in heating mode until room tempera-
ture is raised to the level you have selected. Of course, your system
will run for longer periods to maintain a comfortable environment
on cooler days and nights than on moderate ones.
This section discusses maintenance that should be performed by
your dealer.

ROUTINE MAINTENANCE

All routine maintenance should be handled by skilled, experienced
personnel. Your dealer can help you establish a standard proce-
dure.
For your safety, keep your unit area clear and free of combustible
materials, gasoline, and other flammable liquids and vapors.
To assure proper functioning of your unit, flow of condenser air
must not be obstructed from reaching the unit. Clearance from the
top of the unit is 48 in. (1220 mm). Clearance of at least 42 in.
(1070 mm) is required on sides, except the duct side which has a
12 in. (305 mm) minimum clearance.

MAINTENANCE AND CARE BY THE EQUIPMENT OWNER

Before proceeding with those things you might want to maintain
yourself, please carefully consider the following:
Printed in U.S.A. Form OM50-31
Single-Packaged
50Hz Electric Cooling Units
Fig. 1—Unit 50GS (50Hz)

MAINTENANCE AND SERVICE

Pg 1 10–01
50GS
C99001
Replaces: New