Carrier 25HNA6 Installation Instruction

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to the Expert£
Installation Instruction
NOTE: Read the entire instruction manual before starting the
installation.
Unless otherwise noted, information in these installation
instructions pertain to both 25HNA6 and 25HNA9 series units.
Information that is unique to the 25HNA6 series will be identified
as such; likewise information that is unique to the 25HNA9 series
will also be identified.
SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service, maintenance,
or use can cause explosion, fire, electrical shock, or other
conditions which may cause death, personal iniury, 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 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 and
National Electrical Code (NEC) for special requirements.
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 iniury. 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 iniury
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 iniury or product and
property damage. NOTE is used to highlight suggestions which
will result in enhanced installation, reliability, or operation.
Indoor Thermostat Control Options
Standard
Model Infinity
Control 2-stage
Thermostat
25HNA6 Yes Yes
No
25HNA9 Yes (Emergency
Mode Only)
ELECTRICALSHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
Before installing, modifying, or servicing system, main
electrical disconnect switch nmst be in the OFF position
and install a lockout tag. There may be more than 1
disconnect switch. Lock out and tag switch with a
suitable warning label.
UNIT OPERATION AND SAFETY HAZARD
Failure to follow this warning could result in personal iniury
or equipment damage.
Puron® refrigerant systems operate at higher pressures than
standard R-22 systems. Do not use R-22 service equipment
or components on Puron® refrigerant equipment.