Carrier 50GL-A - Manual (Page 2)

2
SAFETY CONSIDERATIONS
Improper installation adjustment, alteration, service, maintenance,
or use can cause explosion, fire, electrical shock, or other
conditions which may cause death, 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 Refer to the individual instructions
packaged with the kits or accessories when installing.
Follow all safety codes. Wear safety glasses, protective clothing,
and work gloves. Use quenching cloth for brazing operations.
Have a fire extinguisher available. Read these instructions
thoroughly and follow all warnings or cautions included in
literature and attached to the unit. Consult local building codes,
the current editions of the National Electrical Code (NEC) NFPA
70.
In Canada refer to the current editions of the Canadian electrical
Code CSA C22.1.
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 CAUTION.
These words are used with the safety--alert symbol. DANGER
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 unsafe practices which may result in minor personal
injury or product and property damage. NOTE is used to high-
light suggestions which will result in enhanced installation, reli-
ability, or operation.
Note: Installer: This manual should be left with the equipment user.
FIRE, EXPLOSION, ELECTRICAL SHOCK
HAZARD
Failure to follow this warning could result in personal
injury, death, and/or property damage.
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.
! WARNING
FIRE, EXPLOSION HAZARD
Failure to follow this warning could result in personal injury,
death, and/or property damage.
Do not store or use combustible materials, gasoline, or other
flammable vapors and liquids in the vicinity of this or any
other appliance.
WARNING !
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury
and/or death.
Before performing recommended maintenance, be sure the
main power switch to unit is turned off and lock--out tag is
installed.
! WARNING
CUT HAZARD
Failure to follow this caution may result in personal injury.
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.
! 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
Starting or Shutting Unit Off
To start the unit:
1. Turn on the electrical power supply to unit.
2. Select temperature and set MODE control to desired mode.
To shut unit off:
Note: If the unit is being shut down because of a malfunction, call
your dealer as soon as possible.
1. Set system MODE control to OFF.
2. Turn off the electrical power supply to unit.
OPERATING YOUR UNIT
The operation of your unit is controlled by indoor thermostat. You
simply adjust the thermostat and it maintains the indoor temperature
at the level you select. Most thermostats of cooling systems have 3
controls: a temperature control selector, a FAN control, and a SYS-
TEM 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 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 unit will run
for longer periods at a time and have shorter “off” periods than on
moderate days.
Step 2—Heating Mode (if installed with optional electric heat)
Your system may also be equipped with an electric heating source.
On cold days and nights, place your MODE control to HEAT and
your system will automatically turn on the supplemental heat in or-
der to maintain the level of comfort you have selected.
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.
To assure proper functioning of the unit, flow of condenser air must
not be obstructed from reaching the unit. Clearance from the top of