Carrier 50ZPA - 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.
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 underwater.
! WARNING
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.
! WARNING
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.
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) and the duct side (12 in. [305 mm] minimum clearance).
Maintenance and Care for the Equipment Owner
Before proceeding with those things you might want to maintain
yourself, please carefully consider the following:
FIRE, EXPLOSION, ELECTRICAL SHOCK AND
CUT HAZARD
Failure to follow this warning could result in personal injury,
death or property damage.
1. TURN OFF ELECTRICAL POWER TO YOUR UNIT
BEFORE SERVICING OR PERFORMING
MAINTENANCE.
2. 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
Air Filters
The air filter(s) should be checked every 3 or 4 weeks and changed
or cleaned whenever it becomes dirty. Dirty filters produce exces-
sive stress on the blower motor and can cause the motor to overheat
and shut down.
This unit must have air filters in place before it can be operated.
These filters can be located in one of at least two places. In many
applications, the installer will provide return air filter grilles
mounted on the wall or ceiling of the conditioned structure. In the
instance of filter grilles, the filters can simply be removed from the
grille and replaced.
The other typical application is an accessory filter rack installed
inside the unit itself. The following information is given to assist
in changing filters used in these internal filter racks.
Table 1 indicates the correct indoor filter size for your unit.
Table 1—Indoor Air Filter Data
Unit Size Filter Size
024---036 24x24x1 (610x610x25 mm)
042---060 30x30x1 (762x762x25 mm)
If you have difficulty locating your air filter(s) or have questions
concerning proper filter maintenance, contact your dealer for
instructions. When replacing filters, always use the same size and
type of filter that was supplied, originally, by the installer.