Carrier 48HC User's Information Manual

48HC with EnergyX
Factory Installed Energy Recovery
Single ---Package Rooftop Unit (RTU)
Gas Heating/Electric Cooling Units
15 to 25 Nominal Tons
with Puronr (R ---410A) Refrigerant
NOTE: Read the entire instruction manual before starting
the installation.
WARNING
!
ELECTRICAL SHOCK, FIRE OR EXPLOSION
HAZARD
Failure to follow safety warnings exactly could result
in dangerous operation, serious injury, death or
property damage.
Improper servicing could
operation, serious injury, death or property damage.
S Before servicing, disconnect all electrical power to
the unit.
S When servicing controls, label all wires prior to
disconnecting. Reconnect wires correctly.
S Verify proper operation after servicing.
NOTE TO INSTALLER:
This manual should be left with the equipment owner.

TABLE OF CONTENTS

SAFETY CONSIDERATIONS
COMFORTLINK CONTROL
TO LIGHT UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TO SHUT OFF UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . .
ROUTINE MAINTENANCE & CARE
FOR THE EQUIPMENT OWNER
REGULAR DEALER MAINTENANCE
BEFORE YOU CALL FOR SERVICE
System
R
User's Information Manual
result in dangerous
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SAFETY CONSIDERATIONS

Improper installation, adjustment, alteration, service,
maintenance, or use can cause fire, electrical shock, or
other conditions which may cause 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 and wear safety glasses. Have fire
extinguisher available. Read these instructions thoroughly
and follow all warnings or cautions attached to the unit.
Consult local and state building codes and Sheet Metal
and Air Conditioning National Association (SMACNA)
for special installation requirements.
Recognize safety information. This is the safety- - alert
symbol . When you see this symbol on the unit or in
instructions and manuals, be alert to the potential for
personal injury. Understand the 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
1
injury or product and property damage. NOTE is used to
highlight suggestions which will result in enhanced
3
installation, reliability, or operation.
3
Should the gas supply fail to shut off or if overheating
4
occurs, shut off the gas valve to the furnace (see Figs. 2
and 3) before shutting off the electrical supply.
6
9