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©2006 Lennox Industries Inc.
Corp. 0625−L5
XC16
Service Literature
Revised 07−2006
XC16 SERIES UNITS
The XC16 is a high efficiency residential split−system con-
densing unit, which features a two speed scroll compressor
and R−410A refrigerant. XC16 units are available in 2, 3, 4
and 5 tons. XC16 units are rated for 230 volts only. Applica-
tions where supply voltage is less requires a hard start kit.
The series is designed for use with an expansion valve (ap-
proved for use with R−410A) in the indoor unit. This manual
is divided into sections which discuss the major compo-
nents, refrigerant system, charging procedure, mainte-
nance and operation sequence.
Information contained in this manual is intended for use by
qualified service technicians only. All specifications are sub-
ject to change.
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,
recycled waste water, urine, fertilizers, or other dam-
aging chemicals).
DANGER
Shock Hazard
Remove all power at disconnect
before removing access panel.
Single phase XC16 units use single-
pole contactors. Potential
exists for electrical shock resulting
in injury or death.
Line voltage exist at all components
(even when unit is not in operation).
IMPORTANT
Operating pressures of this R−410A unit are higher
than pressures in R−22 units. Always use service
equipment rated for R410A.
TABLE OF CONTENTS
General Page 1. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications / Electrical Data Page 2. . . . . . . . .
I Application Page 3. . . . . . . . . . . . . . . . . . . . . . . . .
II Unit Components Page 3. . . . . . . . . . . . . . . . . .
III Refrigeration System Page 11. . . . . . . . . . . . . . .
IV Charging Page 12. . . . . . . . . . . . . . . . . . . . . . . . .
V Service and Recovery Page 16. . . . . . . . . . . . . .
VI Maintenance Page 16. . . . . . . . . . . . . . . . . . . . . .
VII Wiring and Sequence of Operation Page 17. .
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