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2006 Lennox Industries Inc.
Corp. 0626−L5
Revised October 21, 2010
XP16
Service Literature
XP16 (HFC−410A) SERIES UNITS
WARNING
Improper installation, adjustment, alteration, service or
maintenance can cause personal injury, loss of life, or
damage to property.
Installation and service must be performed by a licensed
professional installer (or equivalent) or a service agency.
CAUTION
Physical contact with metal edges and corners while
applying excessive force or rapid motion can result in
personal injury. Be aware of, and use caution when
working near these areas during installation or while
servicing this equipment.
IMPORTANT
The Clean Air Act of 1990 bans the intentional venting of
refrigerant (CFCs, HCFCs and HFCs) as of July 1, 1992.
Approved methods of recovery, recycling or reclaiming
must be followed. Fines and/or incarceration may be
levied for noncompliance.
TABLE OF CONTENTS
Model Number Identification
. . . . . . . . . . . . . . . . . . . .
Typical Serial Number Identification
. . . . . . . . . . . . . .
Specifications
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Data
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unit Dimensions
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unit Parts Arrangement
. . . . . . . . . . . . . . . . . . . . . . . .
Operating Gauge Set and Service Valves
. . . . . . . . .
Recovering Refrigerant from System
. . . . . . . . . . . . .
Unit Placement
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing and Installing Panels
. . . . . . . . . . . . . . . . .
New or Replacement Line Set
. . . . . . . . . . . . . . . . . .
Brazing Connections
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Flushing Line Set and Indoor Coil
. . . . . . . . . . . . . . .
Installing Indoor Metering Device
. . . . . . . . . . . . . . . .
Leak Test Line Set and Indoor Coil
. . . . . . . . . . . . . .
Evacuating Line Set and Indoor Coil
. . . . . . . . . . . . .
Electrical
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Servicing Units Void of Charge
. . . . . . . . . . . . . . . . . .
Unit Start−Up
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
System Refrigerant
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
System Operation
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Defrost System
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unit Wiring Diagram and Sequence of
Operations
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checklists
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
The XP16 is a high efficiency residential split−system
two−stage heat pump unit, which features a scroll
compressor and HFC−410A refrigerant. XP16 units are
available in 2, 3, 4 and 5 tons. tons. XP16 units are rated for
230 volts only. Applications where supply voltage is less
requires a hard start kit. The series is designed for use with
an indoor unit with an expansion valve approved for
HFC−410A.
WARNING
Electric Shock Hazard. Can cause injury or
death. Unit must be grounded in
accordance with national and local codes.
Line voltage is present at all components
when unit is not in operation on units with
single-pole contactors. Disconnect all
remote electric power supplies before
opening access panel. Unit may have
multiple power supplies.
