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©
2006 Lennox Industries Inc.
Corp. 0612−L2
13ACX
Service Literature
Revised 06−2007
13ACX SERIES UNITS
The 13ACX is a high efficiency residential split−system con-
densing unit, which features a scroll compressor and de-
signed for R−410A refrigerant. 13ACX units are available in
sizes ranging from 1−1/2 through 5 tons. The series is de-
signed for use with an expansion valve in the indoor unit.
This manual is divided into sections which discuss the major
components, refrigerant system, charging procedure, main-
tenance and operation sequence.
Information contained in this manual is intended for use by
qualified service technicians only. All specifications are sub-
ject to change.
IMPORTANT
Operating pressures of this R−410A unit are higher
than pressures in R−22 units. Always use service
equipment rated for R−410A.
WARNING
Improper installation, adjustment, alteration, service
or maintenance can cause property damage, person-
al injury or loss of life. Installation and service must
be performed by a qualified installer or service
agency.
WARNING
Warranty will be voided if covered equipment is re-
moved from original installation site. Warranty will
not cover damage or defect resulting from:
Flood, wind, lightning, or installation and operation in
a corrosive atmosphere (chlorine, fluorine, salt, re-
cycled waste water, urine, fertilizers, or other damag-
ing chemicals).
TABLE OF CONTENTS
General Page
1
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications / Electrical Data
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I Application
Page 3
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II Unit Components
Page 3
. . . . . . . . . . . . . . . . . .
III Refrigeration System
Page 6
. . . . . . . . . . . . . .
IV Charging
Page 7
. . . . . . . . . . . . . . . . . . . . . . . .
VI Maintenance
Page 13
. . . . . . . . . . . . . . . . . . . . .
VII Wiring and Sequence of Operation
Page 14
.
