Carrier 48ES - Manual (Page 2)

2
SAFETY CONSIDERATIONS
Installation and servicing of this equipment can be hazardous due to
mechanical and electrical components. Only trained and qualified
personnel should install, repair, or service this equipment.
Untrained personnel can perform basic maintenance functions such
as cleaning and replacing air filters. All other operations must be
performed by trained service personnel. When working on this
equipment, observe precautions in the literature, on tags, and on la-
bels attached to or shipped with the unit and other safety precautions
that may apply.
Follow all safety codes. Installation must be in compliance with lo-
cal and national building codes. Wear safety glasses, protective
clothing, and work gloves. Have fire extinguisher available. Read
these instructions thoroughly and follow all warnings or cautions
included in literature and attached to the unit.
Recognize safety information. This is the safety--alert symbol ! !
When you see this symbol on the unit and in instructions or manuals,
be alert to the potential for personal injury.
Understand these signal words; DANGER, WARNING, and CAU-
TION. These words are used with the safety--alert symbol. DAN-
GER identifies the most serious hazards which will result in severe
personal injury or death. WARNING signifies hazards which could
result in personal injury or death. CAUTION is used to identify un-
safe practices which may result in minor personal injury or product
and property damage. NOTE is used to highlight suggestions which
will result in enhanced installation, reliability, or operation.
Note: Installer: This manual should be left with the equipment user.
FOR YOUR SAFETY
Failure to follow this caution may result in personal injury.
Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of this or any other appliance.
CAUTION
!
FIRE, EXPLOSION, ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury,
death or property damage.
Do not use this unit 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.
! WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury,
death or property damage.
When removing access panels or performing maintenance
functions inside your unit, be aware of sharp sheet metal parts
and screws. Although special care is taken to reduce sharp
edges to a minimum, be extremely careful when handling
parts or reaching into the unit.
! WARNING
UNIT INTRODUCTION
This 48ES unit is a small packaged gas heat/electric cooling system
that can utilize the comfort of gas heating packaged along with effi-
cient electric air conditioning. This unit uses PuronE, the ozone
friendly refrigerant for cooling.
Starting or Shutting Off Unit
To start the unit:
1. Turn on the electrical power supply and gas to unit.
2. Select desired temperature on thermostrat and set SYSTEM
switch or MODE control to desired mode.
To shut off unit:
Note: If the unit is being shut down because of a malfunction, call
your dealer as soon as possible.
1. Set system SWITCH or MODE control to OFF.
2. Turn off the electrical power, install lock--out tag and shut off
gas supply to unit.
OPERATING YOUR UNIT
The operation of your unit is controlled by the indoor temperature
control. You simply adjust the thermostat and it maintains the in-
door temperature at the level you select. Most thermostats of heating
and cooling systems 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 ser-
vice calls, familiarize yourself with the following facts:
Step 1—Cooling Mode
With the SYSTEM control set to COOL, your unit will run in cool-
ing mode until the indoor temperature is lowered to the level you
have selected. On extremely hot days, your unit will run for longer
periods at a time and have shorter “off” periods than on moderate
days.
Step 2—Gas Heat Mode
With the SYSTEM or MODE control of your idoor thermostat set
to HEAT, your unit will run in heating mode until room temperature
is raised to the level you have selected. Of couse, your system will
run for longer periods to maintain a comfortable environment on
cooler days and nights than on moderate ones.
MAINTENANCE AND SERVICE
This section discusses maintenance that should be performed on
your system. Most maintenance should be performed by your deal-
er. You, as the owner, may wish to handle some minor maintenance
for your new unit.
Routine Maintenance
All routine maintenance should be handled by skilled, experienced
personnel. Your dealer can help you establish a standard procedure.
For your safety, keep the unit area clear and free of combustible ma-
terials, gasoline, and other flammable liquids and vapors.
To assure proper functioning of the unit, flow of condenser air must
not be obstructed from reaching the unit. Clearance from the top of
the unit is 48 in. (1219 mm). Clearance of at least 36 in. (914 mm)
is required on sides except the power entry side (42 in. clearance)
(1067 mm) and the duct side (12 in. minimum clearance) (305 mm).