Page 1
Corp. 0721-L7
XP14
Service Literature
Revised April 7, 2017
INSTALLATION AND SERVICE
PROCEDURE
XP14 (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
As with any mechanical equipment, contact with sharp
sheet metal edges can result in personal injury. Take
care while handling this equipment and wear gloves and
protective clothing
.
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
2
. . . . . . . . . . . . . . . . . . . .
Typical Serial Number Identification
2
. . . . . . . . . . . . . .
Specifications
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Data
4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unit Dimensions
7
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unit Parts Arrangement
8
. . . . . . . . . . . . . . . . . . . . . . . .
Operating Gauge Set and Service Valves
10
. . . . . . . . .
Recovering Refrigerant from System
12
. . . . . . . . . . . . .
Unit Placement
13
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing and Installing Panels
15
. . . . . . . . . . . . . . . . .
New or Replacement Line Set
17
. . . . . . . . . . . . . . . . . . .
Brazing Connections
19
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Flushing Line Set and Indoor Coil
22
. . . . . . . . . . . . . . . .
Installing Indoor Metering Device
23
. . . . . . . . . . . . . . . .
Leak Test Line Set and Indoor Coil
24
. . . . . . . . . . . . . . .
Evacuating Line Set and Indoor Coil
25
. . . . . . . . . . . . .
Electrical
26
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Servicing Units Void of Charge
27
. . . . . . . . . . . . . . . . . .
Unit Start-Up
27
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
System Refrigerant
27
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
System Operation (XP14-XXX-230-01 through 07)
34
.
Defrost System (XP14-XXX-230-01 through 07)
36
. . .
System Operation (XP14-XXX-230-08 and later)
34
. . .
Defrost System (XP14-XXX-230-08 and later)
36
. . . . .
Maintenance
42
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Start-up and Performance Checklist
47
. . . . . . . . . . . . .
Unit Wiring Diagram and Sequence of
Operations
43
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
The XP14 is a high efficiency residential split-system heat
pump unit, which features a scroll compressor and
HFC-410A refrigerant. XP14 units are available in sizes
ranging from 1-1/2 through 5 tons. The series is designed
for use with an indoor unit with an check expansion valve
approved for HFC-410A.
IMPORTANT
This unit must be matched with an indoor coil as
specified in
Lennox XP14
E
ngineering Handbook
.
Coils previously charged with HCFC-22 must be
flushed.
