66901 / 035-20393-001 Rev. C (1204)
R-410A
OUTDOOR SPLIT-SYSTEM
AIR CONDITIONING
MODELS: 15 SEER - CZE / AC5B / AL5B SERIES
2 TO 5 TONS
INSTALLATION MANUAL
LISTED
This product was manufactured
in a plant whose quality system
is certified/registered as being
in conformity with ISO 9001.
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CERTIFICATION APPLIES ONLY
WHEN THE COMPLETE
SYSTEM IS LISTED
WITH ARI.
SECTION I: GENERAL
The outdoor units are designed to be connected to a matching indoor
coil with sweat connect lines. Sweat connect units are factory charged
with refrigerant for the highest sales volume evaporator plus 15 feet of
field supplied lines.
Matching indoor coils are available with a thermal expansion valve or
an orifice liquid feed sized for the most common usage. The orifice size
and/or refrigerant charge may need to be changed for some system
combinations, elevation differences, or total line lengths. See tabular
data sheet provided in unit literature packet for charge requirements.
Refer to Application Data covering “General Piping Recommendations
and Refrigerant Line Length” (Part Number 036-61920-001).
SECTION II: SAFETY
This is a safety alert symbol. When you see this symbol on
labels or in manuals, be alert to the potential for personal
injury.
Understand and pay particular attention to the signal words
DANGER
,
WARNING
, or
CAUTION
.
DANGER
indicates an
imminently
hazardous situation, which, if not
avoided,
will result in death or serious injury
.
WARNING
indicates a
potentially
hazardous situation, which, if not
avoided,
could result in death or serious injury
.
CAUTION
indicates a potentially hazardous situation, which, if not
avoided
may result in minor or moderate injury
. It is also used to
alert against unsafe practices and hazards involving only property dam-
age.
INSPECTION
As soon as a unit is received, it should be inspected for possible dam-
age during transit. If damage is evident, the extent of the damage
should be noted on the carrier’s delivery receipt. A separate request for
inspection by the carrier’s agent should be made in writing. See Local
Distributor for more information.
Improper installation may create a condition where the operation of
the product could cause personal injury or property damage.
Improper installation, adjustment, alteration, service, or mainte-
nance can cause injury or property damage. Refer to this manual
for assistance or for additional information, consult a qualified con-
tractor, installer, or service agency.
This product must be installed in strict compliance with the
enclosed installation instructions and any applicable local, state,
and national codes including, but not limited to building, electrical,
and mechanical codes.
R-410A systems operate at higher pressures than R-22 systems.
Do not use R-22 service equipment or components on R-410A
equipment. Service equipment
Must Be Rated
for R-410A.
TABLE OF CONTENTS
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
UNIT INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATIONS REQUIRING TXV . . . . . . . . . . . . . . . . . . . . . . . . . . 4
ELECTRICAL CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
EVACUATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
SYSTEM CHARGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
SYSTEM START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
LIST OF TABLES
R-410A Saturation Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
15Z24AC Subcooling Charging Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
15Z36AC Subcooling Charging Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
15Z48AC Subcooling Charging Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
15Z60AC Subcooling Charging Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Diagnostic Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
LIST OF FIGURES
Typical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Tubing Hanger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Underground Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Heat Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Typical Field Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
CFM Selection Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Single Stage Non-Variable Speed Furnace (Y Connection Only) . . . . . . . . . . . . 6
Non-Variable Speed Furnace (Y1 & Y2 Connection) . . . . . . . . . . . . . . . . . . . . . 6
Typical Variable Speed Furnace/Air Handler Wiring . . . . . . . . . . . . . . . . . . . . . 6
N1AH, F2RP/F2FP, F2RC/F2FC Air Handler and 2-Speed Fan Kit Wiring . . . . . 6
Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
