Carrier 50ZPB Owner's Information Manual page 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 C22A.
Recognize safety information. This is the safety-alert symbol Z_
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 highlight suggestions which
will result in enhanced installation, reliability, 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.
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.
ELECTRICALSHOCK 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.
ELECTRICAL SHOCK AND OPERATION 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 underwater.
Immediately call a qualified service technician to inspect the
unit and to replace any part of the control system which has
been under water.
ELECTRICAL SHOCK AND CUT 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.
TO START UNIT:
1. Turn on the electrical power supply to the unit.
2. Select temperature and set system switch 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 the temperature switch to OFF.
2. Turn off the electrical power supply to unit.
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 "oW' periods than on
moderate days.
Supplemental Heat
Your system may also be equipped with a supplemental heating
source such as electric heat. On cold days and nights, your system
will automatically turn on the supplemental heat, as needed, in
order to maintain the level of comfort you have selected. When the
thermostat calls for supplemental heat, you may notice the indoor
fan increase its speed.
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
materials, 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.
[1067 mm] clearance).