Lennox XP14-018-230-06 Operating instructions

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 Engineering Handbook.
Coils previously charged with HCFC-22 must be
flushed.

Page 2
Model Number Identification
P 14 XXX− −
Unit Type
P = Heat Pump Outdoor Unit
Series
Nominal Cooling Capacity
018 = 1.5 tons
024 = 2 tons
030 = 2.5 tons
036 = 3 tons
042 = 3.5 tons
048 = 4 tons
060 = 5 tons
Minor Revision Number
230
Voltage
230 = 208/230V-1ph-60hz
Refrigerant Type
X = HFC-410A
X 2
−0
Typical Serial Number Identification
19 09 C
Year Code
08 = 2008
09 = 2009
10 = 2010
Month Code
A = January
B = February
C = March
05716
5 (or 6) Digit Unique Number
Location Code
19 = Saltillo, Mexico
58 = Marshalltown, IA
Specifications
Model Number
Unit Outdoor Fan
Sound Rating Number
(dB)1
Factory Refrigerant
Charge2Number of Blades Diameter - inches.
XP14-018-230-01, -03, -06, -07 71 8 lbs. 4 oz. 3 18
XP14-018-230-08 71 6 lbs. 11 oz. 3 18
XP14-018-230-09 71 6 lbs. 11 oz. or
5 lbs. 11 oz.33 18
1Tested according to AHRI Standard 270-2008 test conditions.
2Refrigerant charge sufficient for 15 feet of line set.
3Later models employed a smaller filter drier resulting in less refrigerant charge required. Verify factory charge from unit nameplate.
Model Number
Unit Outdoor Fan
Sound Rating Number
(dB)1
Factory Refrigerant
Charge2Number of Blades Diameter - inches.
XP14-024-230-01, -03, -06, -07 71 8 lbs. 0 oz. 3 18
XP14-024-230-08 71 6 lbs. 4 oz. 3 18
XP14-024-230-09 71 6 lbs. 4 oz. or
5 lbs. 14 oz.33 18
1Tested according to AHRI Standard 270-2008 test conditions.
2Refrigerant charge sufficient for 15 feet of line set.
3Later models employed a smaller filter drier resulting in less refrigerant charge required. Verify factory charge from unit nameplate.
Model Number
Unit Outdoor Fan
Sound Rating Number
(dB)1
Factory Refrigerant
Charge2Number of Blades Diameter - inches.
XP14-030-230-01 through -07 71 7 lbs. 2 oz. 3 18
XP14-030-230-08 71 6 lbs. 0 oz. 3 18
XP14-030-230-09 71 6 lbs. 0 oz. or
5 lbs. 10 oz.33 18
1Tested according to AHRI Standard 270-2008 test conditions.
2Refrigerant charge sufficient for 15 feet of line set.
3Later models employed a smaller filter drier resulting in less refrigerant charge required. Verify factory charge from unit nameplate.

Page 3
XP14 SERIES
Model Number
Unit Outdoor Fan
Sound Rating Number
(dB)1
Factory Refrigerant
Charge2Number of Blades Diameter - inches.
XP14-036-230-01, -02, -08, -09 71 9 lbs. 12 oz. 3 22
XP14-036-230-10 71 9 lbs. 12 oz. or
9 lbs. 6 oz.33 22
1Tested according to AHRI Standard 270-2008 test conditions.
2Refrigerant charge sufficient for 15 feet of line set.
3Later models employed a smaller filter drier resulting in less refrigerant charge required. Verify factory charge from unit nameplate.
Model Number
Unit Outdoor Fan
Sound Rating Number
(dB)1
Factory Refrigerant
Charge2Number of Blades Diameter - inches.
XP14-042-230-01, -02 71 12 lbs. 7 oz. 4 26
XP14-042-230-08 71 11 lbs. 14 oz. 3 26
XP14-042-230-09 71 11 lbs. 14 oz. or
11 lbs. 8 oz.33 26
1Tested according to AHRI Standard 270-2008 test conditions.
2Refrigerant charge sufficient for 15 feet of line set.
3Later models employed a smaller filter drier resulting in less refrigerant charge required. Verify factory charge from unit nameplate.
Model Number
Unit Outdoor Fan
Sound Rating Number
(dB)1
Factory Refrigerant
Charge2Number of Blades Diameter - inches.
XP14-048-230-01 73 12 lbs. 10 oz. 4 26
XP14-048-230-08 73 10 lbs. 7 oz. 3 26
XP14-048-230-09 73 10 lbs. 7 oz. or
10 lbs. 1 oz.33 26
1Tested according to AHRI Standard 270-2008 test conditions.
2Refrigerant charge sufficient for 15 feet of line set.
3Later models employed a smaller filter drier resulting in less refrigerant charge required. Verify factory charge from unit nameplate.
Model Number
Unit Outdoor Fan
Sound Rating Number
(dB)1
Factory Refrigerant
Charge2Number of Blades Diameter - inches.
XP14-060-230-01 73 16 lbs. 0 oz. 4 26
XP14-060-230-08 73 12 lbs. 11 oz. 3 26
XP14-060-230-09 73 12 lbs. 11 oz. or
12 lbs. 5 oz.33 26
1Tested according to AHRI Standard 270-2008 test conditions.
2Refrigerant charge sufficient for 15 feet of line set.
3Later models employed a smaller filter drier resulting in less refrigerant charge required. Verify factory charge from unit nameplate.

Page 4
Electrical Data
208/230V-60 Hz-1 Ph
Model Number Label Rev.
Unit Compressor Condenser Fan
Maximum
Over-
current
Protection
(amps)1
Minimum
Circuity
Ampacity2
Rated
Load
Amps
(RLA)
Locked
Rotor
Amps
(LRA)
Motor HP Nominal
RPM
Full Load
Amps
(FLA)
Locked
Rotor
Amps
(LRA)
XP14-018-230-01 1.0, 2.0 &
3.0 20 11.9 8.97 48.0 1/10 1075 0.7 1.4
XP14-018-230-02 1.0 20 11.9 8.97 48.0 1/10 1075 0.7 1.4
XP14-018-230-03 1.0 20 11.9 8.97 48.0 1/10 1075 0.7 1.4
XP14-018-230-06 1.0 20 11.9 8.97 48.0 1/10 1075 0.7 1.4
XP14-018-230-07
1.0 20 11.9 8.97 48.0 1/10 1075 0.7 1.4
2.0 20 12.3 9.00 48.0 1/10 1075 0.7 1.4
3.0 20 12.2 9.00 48.0 1/10 1075 0.7 1.4
XP14-018-230-08
1.0 20 11.9 8.97 48.0 1/10 1075 0.7 1.87
2.0 20 12.3 8.96 48.0 1/6 825 1.1 1.87
3.0 20 12.3 8.96 48.0 1/6 825 1.1 1.87
XP14-018-230-09
1.0 20 12.3 8.96 48.0 1/6 825 1.1 1.87
2.0 20 12.3 9.00 48.0 1/6 825 1.1 1.87
3.0 20 12.2 9.00 48.0 1/6 825 1.0 1.87
208/230V-60 Hz-1 Ph
Model Number Label Rev.
Unit Compressor Condenser Fan
Maximum
Over-
current
Protection
(amps)1
Minimum
Circuity
Ampacity2
Rated
Load
Amps
(RLA)
Locked
Rotor
Amps
(LRA)
Motor HP Nominal
RPM
Full Load
Amps
(FLA)
Locked
Rotor
Amps
(LRA)
XP14-024-230-01 1.0 & 2.0 30 17.5 13.46 58.0 1/10 1075 0.7 1.4
XP14-024-230-02 1.0 30 17.5 13.46 58.0 1/10 1075 0.7 1.4
XP14-024-230-03 1.0 30 17.5 13.46 58.0 1/10 1075 0.7 1.4
XP14-024-230-06 1.0 30 17.5 13.46 58.0 1/10 1075 0.7 1.4
XP14-024-230-07
1.0 30 17.5 13.46 58.0 1/10 1075 0.7 1.4
2.0 30 17.9 13.50 58.0 1/10 1075 0.7 1.4
3.0 30 17.8 13.50 58.0 1/10 1075 0.7 1.4
XP14-024-230-08
1.0 30 17.5 13.46 58.0 1/10 1075 0.7 1.4
2.0, 3.0 &
4.0 30 17.9 13.44 58.0 1/6 825 1.1 1.87
XP14-024-230-09 1.0 & 2.0 30 17.9 13.44 58.0 1/6 825 1.1 1.87
3.0 30 17.9 13.50 58.0 1/6 825 1.1 1.87

Page 5
XP14 SERIES
208/230V-60 Hz-1 Ph
Model Number Label Rev.
Unit Compressor Condenser Fan
Maximum
Over-
current
Protection
(amps)1
Minimum
Circuity
Ampacity2
Rated
Load
Amps
(RLA)
Locked
Rotor
Amps
(LRA)
Motor HP Nominal
RPM
Full Load
Amps
(FLA)
Locked
Rotor
Amps
(LRA)
XP14-030-230-01 1.0, 2.0 &
3.0 30 17.0 13.1 64.0 1/10 1075 0.7 1.4
XP14-030-230-02 1.0 30 17.0 13.1 64.0 1/10 1075 0.7 1.4
XP14-030-230-03 1.0 30 17.0 13.1 64.0 1/10 1075 0.7 1.4
XP14-030-230-05 1.0 30 17.0 13.1 64.0 1/10 1075 0.7 1.4
2.0 30 19.4 14.1 64.0 1/10 1075 0.7 1.4
XP14-030-230-06 1.0 30 17.0 13.1 64.0 1/10 1075 0.7 1.4
XP14-030-230-07
1.0 30 17.0 13.1 64.0 1/10 1075 0.7 1.4
2.0 30 17.5 13.1 64.0 1/10 1075 0.7 1.4
3.0 30 17.4 13.1 64.0 1/10 1075 0.7 1.4
XP14-030-230-08 1.0 30 17.0 13.1 64.0 1/10 1075 0.7 1.4
2.0 & 3.0 25 17.1 12.8 64.0 1/6 825 1.1 1.87
XP14-030-230-09
1.0 25 17.1 12.8 64.0 1/6 825 1.1 1.87
2.0 30 17.5 13.1 64.0 1/6 825 1.1 1.87
3.0 30 17.4 13.1 64.0 1/6 825 1.1 1.87
208/230V-60 Hz-1 Ph
Model Number Label Rev.
Unit Compressor Condenser Fan
Maximum
Over-
current
Protection
(amps)1
Minimum
Circuity
Ampacity2
Rated
Load
Amps
(RLA)
Locked
Rotor
Amps
(LRA)
Motor HP Nominal
RPM
Full Load
Amps
(FLA)
Locked
Rotor
Amps
(LRA)
XP14-036-230-01 1.0, 2.0 &
3.0 30 19.4 14.1 77.0 1/3 825 1.8 2.9
XP14-036-230-02 1.0 30 19.4 14.1 77.0 1/3 825 1.8 2.9
XP14-036-230-08 1.0 30 19.4 14.1 77.0 1/3 825 1.8 2.9
2.0 30 18.7 14.08 77.0 1/6 825 1.1 1.87
XP14-036-230-09 1.0 30 18.7 14.08 77.0 1/6 825 1.1 1.87
XP14-036-230-10 1.0 & 2.0 30 18.7 14.08 77.0 1/6 825 1.1 1.87
208/230V-60 Hz-1 Ph
Model Number Label Rev.
Unit Compressor Condenser Fan
Maximum
Over-
current
Protection
(amps)1
Minimum
Circuity
Ampacity2
Rated
Load
Amps
(RLA)
Locked
Rotor
Amps
(LRA)
Motor HP Nominal
RPM
Full Load
Amps
(FLA)
Locked
Rotor
Amps
(LRA)
XP14-042-230-01 1.0 40 23.9 17.69 107.0 1/3 825 1.8 2.9
2.0 & 3.0 40 24.2 17.94 112.0 1/3 825 1.8 2.9
XP14-042-230-02 1.0 40 24.2 17.94 112.0 1/3 825 1.8 2.9
XP14-042-230-08
1.0 40 24.2 17.94 112.0 1/3 825 1.8 2.9
2.0, 3.0 &
4.0 40 24.2 17.92 112.0 1/3 825 1.8 2.9
XP14-042-230-09 1.0 40 24.2 17.92 112.0 1/3 825 1.8 2.9
2.0 40 24.2 18.0 112.0 1/3 825 1.8 2.9

Page 6
208/230V-60 Hz-1 Ph
Model Number Label Rev.
Unit Compressor Condenser Fan
Maximum
Over-
current
Protection
(amps)1
Minimum
Circuity
Ampacity2
Rated
Load
Amps
(RLA)
Locked
Rotor
Amps
(LRA)
Motor HP Nominal
RPM
Full Load
Amps
(FLA)
Locked
Rotor
Amps
(LRA)
XP14-048-230-01 1.0, 2.0 &
3.0 50 29.0 21.79 117.0 1/3 825 1.8 2.1
XP14-048-230-02 1.0 50 29.0 21.79 117.0 1/3 825 1.8 2.1
XP14-048-230-08 1.0 50 29.0 21.76 117.0 1/3 825 1.8 2.1
XP14-048-230-09 1.0 50 29.0 21.79 117.0 1/3 825 1.8 2.1
2.0 & 3.0 50 29.0 21.76 117.0 1/3 825 1.8 2.1
208/230V-60 Hz-1 Ph
Model Number Label Rev.
Unit Compressor Condenser Fan
Maximum
Over-
current
Protection
(amps)1
Minimum
Circuity
Ampacity2
Rated
Load
Amps
(RLA)
Locked
Rotor
Amps
(LRA)
Motor HP Nominal
RPM
Full Load
Amps
(FLA)
Locked
Rotor
Amps
(LRA)
XP14-060-230-01 1.0 & 2.0 60 34.8 26.41 134.0 1/3 825 1.8 2.1
XP14-060-230-03 1.0 60 34.8 26.41 134.0 1/3 825 1.8 2.1
XP14-060-230-08
1.0 60 34.8 26.41 134.0 1/3 825 1.8 2.1
2.0, 3.0 &
4.0 50 29.4 22.10 125.0 1/3 825 1.8 2.1
XP14-060-230-09 1.0 60 29.4 26.41 125.0 1/3 825 1.8 2.1
1HACR type circuit breaker or fuse.
2Refer to National or Canadian Electrical Code manual to determine wire, fuse and disconnect size requirements.

Page 7
XP14 SERIES
Unit Dimensions - Inches (mm)
ELECTRICAL INLETS
SIDE VIEW
SUCTION LINE
CONNECTION
LIQUID LINE
CONNECTION
4-1/2”
(108)
4-3/4”
(121)
TOP VIEW
A
B
C
Table 1. XP14-XXX-230-01 through 07
Model Number A B C
XP14-018-230 31 (787)
27 (686) 28 (711)
XP14-024-230 31 (787)
XP14-030-230 35 (889)
XP14-036-230 31 (787)
35-1/2 (902) 39-1/2 (1003)
XP14-042-230 39 (991)
XP14-048-230 39 (991)
XP14-060-230 45 (1143)
Table 2. XP14-XXX-230-08 / -09
Model Number A B C
XP14-018-230 39 (991)
30-1/2 (775) 35 (889)
XP14-024-230 39 (991)
XP14-030-230 39 (991)
XP14-036-230 35 (889)
XP14-042-230 39 (991)
35-1/2 (902) 39-1/2 (1003)
XP14-048-230 39 (991)
XP14-060-230 45 (1143)
16-7/8
(429)
30-3/4
(781)
26-7/8
(683)
3-3/4
(95)
8-3/4
(222)
3-1/8
(79)
XP14-042 TO -060 BASE WITH
ELONGATED LEGS (LARGE)
4-5/8
(117)
13-7/8
(352) K
J
UNIT SUPPORT FEET
XP14-018 AND -036 BASE WITH
ELONGATED LEGS (MEDIUM)
7-3/4
(197)
3-1/4
(83)
27-1/8
(689) 3-5/8
(92)
4-1/2
(114)
20-5/8
(524)
UNIT SUPPORT FEET

Page 8
Typical Unit Parts Arrangement
LIQUID LINE FILTER DRIER (BI-FLOW)
FIELD CONNECTION
FOR LIQUID LINE SET
LIQUID LINE SERVICE
VALVE
REVERSING VALVE
FIELD CONNECTION
FOR VAPOR LINE
HIGH PRESSURE SWITCH
(AUTO-RESET) (S4)
GROUND LUG
CONTACTOR-1POLE
(K1-1)
CAPACITOR
(C12)
CONTROL PANEL
PLUMBING, SWITCHES AND SENSOR COMPONENTS
COMPRESSOR
(B1)
LOW PRESSURE
SWITCH (S87)
DEFROST
CONTROL (A108)
CHECK EXPANSION
VALVE
CRANKCASE HEATER
THERMOSTAT (S40) (-036,
-042, -048 AND 060 UNITS
ONLY) CRANKCASE HEATER (-036, -042, -048
AND -060 UNITS ONLY)
REVERSING VALVE
SOLENOID
TRUE SUCTION PORT
MUFFLER
VAPOR LINE SERVICE
VALVE
5-TON UNIT
EXAMPLED HERE
CHECK EXPANSION VALVE
SENSING BULB
COMPRESSOR HARNESS
CONNECTION
COIL TEMPERATURE
SENSOR (RT21) - 6TH
HAIRPIN UP ON INSIDE ROW.
AMBIENT
SENSOR (RT13)
Figure 1. Typical Parts Arrangements (XP14-XXX-230-01 through 07)

Page 9
XP14 SERIES
LIQUID LINE FILTER
DRIER (BI-FLOW)
FIELD CONNECTION
FOR LIQUID LINE SET
LIQUID LINE
SERVICE VALVE
REVERSING
VALVE
FIELD CONNECTION
FOR VAPOR LINE
(BALL-TYPE -060 ONLY)
HIGH PRESSURE SWITCH
(AUTO-RESET) (S4)
GROUND
LUG
CONTACTOR-
1POLE (K1-1)
CAPACITOR (C12)
CONTROL PANEL
PLUMBING, SWITCHES AND
SENSOR COMPONENTS
COMPRESSOR
LOW PRESSURE
SWITCH (S87)
DEFROST CONTROL
(CMC1)
DEFROST
THERMOSTAT (S6)
CHECK EXPANSION
VALVE
CRANKCASE HEATER THERMOSTAT (S40)
(-036, -042, -048 AND 060 UNITS ONLY)
CRANKCASE HEATER
(-036, -042, -048 AND
060 UNITS ONLY)
REVERSING VALVE
SOLENOID
TRUE SUCTION
PORT
MUFFLER
VAPOR LINE SERVICE
VALVE
5-TON UNIT
EXAMPLED HERE
ONLY ON UNITS
USING EXTERNAL
SWITCH
SWITCH
COVER
THERMAL
PROTECTION
SWITCH (S173)
FIELD CONNECTION FOR VAPOR
LINE (ANGLE-TYPE - ALL SIZES
EXCEPT -060)
CHECK EXPANSION VALVE
SENSING BULB
Figure 2. Typical Parts Arrangements (XP14-XXX-230-08)

Page 10
WARNING
The State of California has determined that this product
may contain or produce a chemical or chemicals, in very
low doses, which may cause serious illness or death. It
may also cause cancer, birth defects, or reproductive
harm.
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.
Operating Gauge Set and Service Valves
These instructions are intended as a general guide and do
not supersede local codes in any way. Consult authorities
who have jurisdiction before installation.
TORQUE REQUIREMENTS
When servicing or repairing heating, ventilating, and air
conditioning components, ensure the fasteners are
appropriately tightened. Table 3 lists torque values for
fasteners.
IMPORTANT
Only use Allen wrenches of sufficient hardness (50Rc -
Rockwell Harness Scale minimum). Fully insert the
wrench into the valve stem recess.
Service valve stems are factory-torqued (from 9 ft-lbs for
small valves, to 25 ft-lbs for large valves) to prevent
refrigerant loss during shipping and handling. Using an
Allen wrench rated at less than 50Rc risks rounding or
breaking off the wrench, or stripping the valve stem
recess.
See the Lennox Service and Application Notes #C-08-1
for further details and information.
IMPORTANT
To prevent stripping of the various caps used, the
appropriately sized wrench should be used and fitted
snugly over the cap before tightening.
Table 3. Torque Requirements
Parts Recommended Torque
Service valve cap 8 ft.- lb. 11 NM
Sheet metal screws 16 in.- lb. 2 NM
Machine screws #10 28 in.- lb. 3 NM
Compressor bolts 90 in.- lb. 10 NM
Gauge port seal cap 8 ft.- lb. 11 NM
USING MANIFOLD GAUGE SET
When checking the system charge, only use a manifold
gauge set that features low loss anti-blow back fittings.
Manifold gauge set used with HFC-410A refrigerant
systems must be capable of handling the higher system
operating pressures. The gauges should be rated for use
with pressures of 0 - 800 psig on the high side and a low
side of 30” vacuum to 250 psig with dampened speed to
500 psi. Gauge hoses must be rated for use at up to 800
psig of pressure with a 4000 psig burst rating.
OPERATING SERVICE VALVES
The liquid and vapor line service valves are used for
removing refrigerant, flushing, leak testing, evacuating,
checking charge and charging.
Each valve is equipped with a service port which has a
factory-installed valve stem. Figure 3 provides information
on how to access and operating both angle and ball service
valves.

Page 11
XP14 SERIES
(VALVE STEM SHOWN
CLOSED) INSERT HEX
WRENCH HERE
SERVICE PORT CORE
SERVICE PORT CAP
ANGLE-TYPE SERVICE VALVE
(FRONT-SEATED CLOSED)
SERVICE PORT
CORE
TO OUTDOOR UNIT
STEM CAP
(VALVE STEM SHOWN OPEN)
INSERT HEX WRENCH HERE
TO INDOOR
UNIT
ANGLE-TYPE SERVICE VALVE
(BACK-SEATED OPENED)
BALL (SHOWN
CLOSED)
SERVICE PORT
CORE
TO INDOOR UNIT
TO OUTDOOR
UNIT
TO OPEN ROTATE STEM
COUNTERCLOCKWISE 90°.
TO CLOSE ROTATE STEM
CLOCKWISE 90°.
SERVICE PORT
SERVICE PORT
CAP
STEM CAP
VALVE
STEM
SERVICE VALVES ANGLE AND BALL
Operating Angle Type Service Valve:
1. Remove stem cap with an appropriately sized wrench.
2. Use a service wrench with a hex-head extension (3/16” for liquid line valve sizes and 5/16” for vapor line valve sizes) to back
the stem out counterclockwise as far as it will go.
Operating Ball Type Service Valve:
1. Remove stem cap with an appropriately sized wrench.
2. Use an appropriately sized wrench to open. To open valve, rotate
stem counterclockwise 90°. To close rotate stem clockwise 90°.
12
3
4
5
6
7
8
9
10
11 12
1/12 TURN
To Access Service Port:
A service port cap protects the service port core from contamination and
serves as the primary leak seal.
1. Remove service port cap with an appropriately sized wrench.
2. Connect gauge set to service port.
3. When testing is completed, replace service port cap and tighten as
follows:
With torque wrench: Finger tighten and
torque cap per table 3.
Without torque wrench: Finger tighten and
use an appropriately sized wrench to turn
an additional 1/6 turn clockwise.
12
3
4
5
6
7
8
9
10
11 12
1/6 TURN
When service valve is CLOSED, the service port is
open to the line set and indoor unit.
When service valve is OPEN, the service port is
open to the line set, indoor and outdoor unit.
Reinstall Stem Cap:
Stem cap protects the valve stem from damage and serves as the
primary seal. Replace the stem cap and tighten as follows:
With torque wrench: Finger tighten and
then torque cap per table 3.
Without torque wrench: Finger tighten
and use an appropriately sized
wrench to turn an additional 1/12 turn
clockwise.
NOTE — A label with specific torque requirements may be affixed to the stem cap. If the label is present, use the specified torque.
Figure 3. Angle and Ball Service Valves

Page 12
Recovering Refrigerant from System
MAIN FUSE BOX/BREAKER PANEL
Disconnect all power to the existing outdoor unit at the disconnect
switch or main fuse box/breaker panel.
DISCONNECT POWER CONNECT MANIFOLD GAUGE SET
MANIFOLD GAUGES
RECOVERY MACHINE
CLEAN RECOVERY
CYLINDER
OUTDOOR UNIT
HIGH
LOW
Connect a gauge set, clean recovery cylinder and a recovery
machine to the service ports of the existing unit. Use the
instructions provided with the recovery machine to make the
connections.
METHOD 1:
Us this method if the existing outdoor unit is not equipped with shut-off valves, or if the unit is not operational and you plan to use the existing
HCFC-22 to flush the system.
Remove all HCFC-22 refrigerant from the existing system. Check gauges after shutdown to confirm that the entire system is completely void of
refrigerant.
METHOD 2:
Use this method if the existing outdoor unit is equipped with manual shut-off valves, and you plan to use new HCFC-22 refrigerant to flush the
system.
The following devices could prevent full system charge recovery into the outdoor unit:
Outdoor unit's high or low-pressure switches (if applicable) when tripped can cycle the compressor OFF.
Compressor can stop pumping due to tripped internal pressure relief valve.
Compressor has internal vacuum protection that is designed to unload the scrolls (compressor stops pumping) when the pressure ratio meets
a certain value or when the suction pressure is as high as 20 psig. (Compressor suction pressures should never be allowed to go into a vacuum.
Prolonged operation at low suction pressures will result in overheating of the scrolls and permanent damage to the scroll tips, drive bearings and
internal seals.)
Once the compressor can not pump down to a lower pressure due to one of the above system conditions, shut off the vapor valve. Turn OFF the
main power to unit and use a recovery machine to recover any refrigerant left in the indoor coil and line set.
Perform the following task:
A Start the existing HCFC-22 system in the cooling mode and close the liquid line valve.
B Use the compressor to pump as much of the existing HCFC-22 refrigerant into the outdoor unit until the outdoor system is full. Turn the outdoor unit
main power OFF and use a recovery machine to remove the remaining refrigerant from the system.
NOTE — It may be necessary to bypass the low pressure switches (if equipped) to ensure complete refrigerant evacuation.
C When the low side system pressures reach 0 psig, close the vapor line valve.
D Check gauges after shutdown to confirm that the valves are not allowing refrigerant to flow back into the low side of the system.
Remove existing HCFC-22 refrigerant using one of the following procedures:
RECOVERING REFRIGERANT
IMPORTANT — Some system configurations may contain higher than normal refrigerant charge due to either large internal coil volumes,
and/or long line sets.
12
3
DISCONNECT
SWITCH
MAIN FUSE
BOX/BREAKER
PANEL
Figure 4. Refrigerant Recovery

Page 13
XP14 SERIES
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See
NOTES
See NOTES
NOTES:
Service clearance of 30 in. must be maintained on one of the sides
adjacent to the control box.
Clearance to one of the other three sides must be 36 in.
Clearance to one of the remaining two sides may be 12 in. and the
final side may be 6 in.
A clearance of 24 in. must be maintained
between two units.
48 in. clearance required on top of unit.
See
NOTES
See NOTES Control
Box
NOTICE: Specific applications may require adjustment of the listed installation clearances to provide protection for
the unit from physical damage or to avoid conditions which limit operating efficiency. (Example: Clearances may
have to be increased to prevent snow or ice from falling on the top of the unit. Additional clearances may also be
required to prevent air recirculation when the unit is installed under a deck or in another tight space.)
Figure 5. Installation Clearances
Unit Placement
CAUTION
In order to avoid injury, take proper precaution when
lifting heavy objects.
See Unit Dimensions on page 3 for sizing mounting slab,
platforms or supports. Refer to figure 5 for mandatory
installation clearance requirements.
POSITIONING CONSIDERATIONS
Consider the following when positioning the unit:
Some localities are adopting sound ordinances based
on the unit's sound level registered from the adjacent
property, not from the installation property. Install the
unit as far as possible from the property line.
When possible, do not install the unit directly outside
a window. Glass has a very high level of sound
transmission. For proper placement of unit in relation
to a window see the provided illustration in figure 6,
detail A.
PLACING UNIT ON SLAB
When installing unit at grade level, the top of the slab
should be high enough above grade so that water from
higher ground will not collect around the unit. The slab
should have a slope tolerance as described in figure 6,
detail B.
NOTE — If necessary for stability, anchor unit to slab as
described in figure 6, detail D.
ELEVATING THE UNIT
Units are outfitted with elongated support feet as illustrated
in figure 6, detail C.
If additional elevation is necessary, raise the unit by
extending the height of the unit support feet. This may be
achieved by using a 2 inch (50.8mm) Schedule 40 female
threaded adapter.
The specified coupling will fit snuggly into the recessed
portion of the feet. Use additional 2 inch (50.8mm)
Schedule 40 male threaded adaptors which can be
threaded into the female threaded adaptors to make
additional adjustments to the level of the unit.
NOTE — Keep the height of extenders short enough to
ensure a sturdy installation. If it is necessary to extend
further, consider a different type of field-fabricated
framework that is sturdy enough for greater heights.

Page 14
LEG DETAIL
BASE
2” (50.8MM) SCH 40
FEMALE THREADED
ADAPTER
Concrete slab — use two plastic anchors (hole
drill 1/4”)
Wood or plastic slab — no plastic anchor (hole
drill 1/8”)
COIL
BASE PAN
CORNER POST
STABILIZING BRACKET (18 GAUGE
METAL — 2” WIDTH; HEIGHT AS
REQUIRED)
— Slab Side Mounting
#10 1/2” LONG SELF-DRILLING
SHEET METAL SCREWS
#10 1-1/4” LONG HEX HD SCREW
AND FLAT WASHER
MINIMUM ONE
PER SIDE
Stabilizing bracket (18 gauge metal — 2” (50.8mm) width; height as required); bend to form
right angle as exampled below.
FOR EXTRA
STABILITY
— Deck Top Mounting
— Elevated Slab Mounting
using Feet Extenders
STABILIZING UNIT ON UNEVEN SURFACES
Install unit level or, if on a slope, maintain slope tolerance of two (2)
degrees (or two inches per five feet [50 mm per 1.5 m]) away from
building structure.
MOUNTING
SLAB
BUILDING
STRUCTURE
GROUND LEVEL
— Outside Unit Placement — Slab Mounting at Ground Level
SAME FASTENERS AS
SLAB SIDE MOUNTING.
IMPORTANT — To help stabilize an outdoor unit, some installations may require strapping the unit to the pad using brackets and anchors
commonly available in the marketplace.
DETAIL A DETAIL B
DETAIL C
DETAIL D
2” (50.8MM) SCH 40
MALE THREADED
ADAPTER
Use additional 2” SCH 40 male threaded adapters
which can be threaded into the female threaded
adapters to make additional adjustments to the level of
the unit.
TWO 90° ELBOWS INSTALLED IN LINE SET WILL
REDUCE LINE SET VIBRATION.
Install unit away from windows.
One bracket per side (minimum). For extra stability, two brackets per side, two inches
(51mm) from each corner.
DETAIL E
Figure 6. Placement, Slab Mounting and Stabilizing Unit

Page 15
XP14 SERIES
STABILIZING UNIT ON UNEVEN SURFACES
IMPORTANT
Unit Stabilizer Bracket Use (field-provided):
Always use stabilizers when unit is raised above the
factory height. (Elevated units could become unstable in
gusty wind conditions).
Stabilizers may be used on factory height units when
mounted on unstable an uneven surface.
With unit positioned at installation site, perform the
following:
1. Remove two side louvered panels to expose the unit
base.
2. Install the brackets as illustrated in figure 6, detail D or
E using conventional practices.
3. Replace the panels after installation is complete.
ROOF MOUNTING
Install the unit a minimum of 6 inches (152 mm) above the
roof surface to avoid ice build-up around the unit. Locate
the unit above a load bearing wall or area of the roof that
can adequately support the unit. Consult local codes for
rooftop applications.
If unit coil cannot be mounted away from prevailing winter
winds, a wind barrier should be constructed. Size barrier at
least the same height and width as outdoor unit. Mount
barrier 24 inches (610 mm) from the sides of the unit in the
direction of prevailing winds.
NOTICE
Roof Damage!
This system contains both refrigerant and oil. Some
rubber roofing material may absorb oil and cause the
rubber to swell when it comes into contact with oil. The
rubber will then bubble and could cause leaks. Protect
the roof surface to avoid exposure to refrigerant and oil
during service and installation. Failure to follow this
notice could result in damage to roof surface.
Removing and Installing Panels
IMPORTANT
Do not allow panels to hang on unit by top tab. Tab is for
alignment and not designed to support weight of panel.
IMPORTANT
To help stabilize an outdoor unit, some installations may
require strapping the unit to the pad using brackets and
anchors commonly available in the marketplace.
WARNING
To prevent personal injury, or damage to panels, unit or
structure, be sure to observe the following:
While installing or servicing this unit, carefully stow all
removed panels out of the way, so that the panels will not
cause injury to personnel, nor cause damage to objects
or structures nearby, nor will the panels be subjected to
damage (e.g., being bent or scratched).
While handling or stowing the panels, consider any
weather conditions, especially windy conditions, that
may cause panels to be blown around and battered.

Page 16
LOUVERED PANEL REMOVAL
Remove the louvered panels as follows:
1. Remove two screws, allowing the panel to swing open slight
ly.
2. Hold the panel firmly throughout this procedure. Rotate bot
tom corner of panel away from hinged corner post until lower
three tabs clear the slots as illustrated in detail B.
3. Move panel down until lip of upper tab clears the top slot in
corner post as illustrated in detail A.
LOUVERED PANEL INSTALLATION
Position the panel almost parallel with the unit as illustrated in
detail D with the screw side as close to the unit as possible.
Then, in a continuous motion:
1. Slightly rotate and guide the lip of top tab inward as illus
trated in detail A and C; then upward into the top slot
of the hinge corner post.
2. Rotate panel to vertical to fully engage all tabs.
3. Holding the panel's hinged side firmly in place, close the
right-hand side of the panel, aligning the screw holes.
4. When panel is correctly positioned and aligned, insert
the screws and tighten.
DETAIL A
DETAIL B
ROTATE IN THIS DIRECTION;
THEN DOWN TO REMOVE
PANEL
SCREW
HOLES
LIP
IMPORTANT! DO NOT ALLOW PANELS TO HANG ON UNIT BY TOP TAB. TAB IS FOR
ALIGNMENT AND NOT DESIGNED TO SUPPORT WEIGHT OF PANEL.
PANEL SHOWN SLIGHTLY ROTATED TO ALLOW TOP TAB TO EXIT (OR
ENTER) TOP SLOT FOR REMOVING (OR INSTALLING) PANEL.
MAINTAIN MINIMUM PANEL ANGLE (AS CLOSE TO PARALLEL WITH THE UNIT
AS POSSIBLE) WHILE INSTALLING PANEL.
PREFERRED ANGLE
FOR INSTALLATION
ANGLE MAY BE TOO
EXTREME
HOLD DOOR FIRMLY TO THE HINGED
SIDE TO MAINTAIN
FULLY-ENGAGED TABS
Detail C
Figure 7. Removing and Installing Panels

Page 17
XP14 SERIES
New or Replacement Line Set
REFRIGERANT LINE SET
This section provides information on installation or
replacement of existing line set. If new or replacement line
set is not being installed then proceed to Brazing
Connections on page 19.
IMPORTANT
Lennox highly recommends changing line set when
converting the existing system from HCFC-22 to
HFC-410A.If that is not possible and the line set is the
proper size as reference in table 2, use the procedure
outlined under Flushing the System on page 13.
If refrigerant lines are routed through a wall, then seal and
isolate the opening so vibration is not transmitted to the
building. Pay close attention to line set isolation during
installation of any HVAC system. When properly isolated
from building structures (walls, ceilings. floors), the
refrigerant lines will not create unnecessary vibration and
subsequent sounds. See figure 8 for recommended
installation practices. Also, consider the following when
placing and installing a high-efficiency outdoor unit.
Liquid lines that meter the refrigerant, such as RFC1 liquid
lines, must not be used in this application. Existing line set
of proper size as listed in table 4 may be reused. If system
was previously charged with HCFC-22 refrigerant, then
existing line set must be flushed (see Flushing the System
on page 22).
Field refrigerant piping consists of liquid and vapor lines
from the outdoor unit to the indoor unit coil (braze
connections). Use Lennox L15 (sweat, non-flare) series
line set, or field-fabricated refrigerant line sizes as listed in
table 4.
Table 4. Refrigerant Line Set — Inches (mm)
Model
Valve Field
Connections Recommended Line Set
Liquid
Line
Vapor
Line
Liquid
Line
Vapor
Line
L15
Line Sets
-018
-024
-030
3/8 in.
(10 mm)
3/4 in
(19 mm)
3/8 in.
(10
mm)
3/4 in
(19 mm)
L15-41
15 ft. - 50 ft.
(4.6 m - 15 m)
-036
-042
-048
3/8 in.
(10 mm)
7/8 in
(22 mm)
3/8 in.
(10
mm)
7/8 in
(22 mm)
L15-65
15 ft. - 50 ft.
(4.6 m - 15 m)
-060 3/8 in.
(10 mm)
7/8 in.
(22 mm)
3/8 in.
(10
mm)
7/8 in.
(22 mm)
Field
Fabricated
NOTE — When installing refrigerant lines longer than 50
feet, see the Lennox Refrigerant Piping Design and
Fabrication Guidelines, CORP. 9351-L9, or contact
Lennox Technical Support Product Applications for
assistance.
To obtain the correct information from Lennox, be sure to
communicate the following information:
Model (XP14) and size of unit (e.g. -036).
Line set diameters for the unit being installed as listed
in table 4 and total length of installation.
Number of elbows vertical rise or drop in the piping.
The compressor is charged with sufficient Polyol ester oil
for line set lengths up to 50 feet. Recommend adding oil to
system based on the amount of refrigerant charge in the
system. No need to add oil in system with 20 pounds of
refrigerant or less. For systems over 20 pounds - add one
ounce of every five pounds of refrigerant.
Recommended topping-off POE oils are Mobil EAL
ARCTIC 22 CC or ICI EMKARATERL32CF.
WARNING
Polyol Ester (POE) oils used with HFC-410A
refrigerant absorb moisture very quickly. It is very
important that the refrigerant system be kept closed
as much as possible. DO NOT remove line set caps
or service valve stub caps until you are ready to make
connections.
IMPORTANT
Mineral oils are not compatible with HFC-410A.If oil
must be added, it must be a Polyol Ester oil.

Page 18
ANCHORED HEAVY NYLON
WIRE TIE OR AUTOMOTIVE
MUFFLER‐TYPE HANGER
STRAP LIQUID LINE TO
VAPOR LINE
WALL
STUD
LIQUID LINE
NON-CORROSIVE
METAL SLEEVE
VAPOR LINE - WRAPPED
IN ARMAFLEX
AUTOMOTIVE
MUFFLER‐TYPE HANGER
REFRIGERANT LINE SET — TRANSITION
FROM VERTICAL TO HORIZONTAL
Line Set Isolation — The following illustrations are examples of proper refrigerant line set isolation:
STRAPPING
MATERIAL (AROUND
VAPOR LINE ONLY)
TAPE OR
WIRE TIE
WIRE TIE (AROUND
VAPOR LINE ONLY)
FLOOR JOIST OR
ROOF RAFTER
TAPE OR
WIRE TIE
To hang line set from joist or rafter, use either metal strapping material
or anchored heavy nylon wire ties.
8 FEET (2.43 METERS)
STRAP THE VAPOR LINE TO THE JOIST
OR RAFTER AT 8 FEET (2.43 METERS)
INTERVALS THEN STRAP THE LIQUID
LINE TO THE VAPOR LINE.
FLOOR JOIST OR
ROOF RAFTER
REFRIGERANT LINE SET — INSTALLING
HORIZONTAL RUNS
NOTE — Similar installation practices should be used if line set is
to be installed on exterior of outside wall.
PVC
PIPE
FIBERGLASS
INSULATION
CAULK
OUTSIDE
WALL
VAPOR LINE WRAPPED
WITH ARMAFLEX
LIQUID
LINE
OUTSIDE WALL LIQUID LINE
VAPOR LINE
WOOD BLOCK
BETWEEN STUDS
STRAP
WOOD BLOCK
STRAP
SLEEVE
WIRE TIE
WIRE TIE
WIRE TIE
INSIDE WALL
REFRIGERANT LINE SET — INSTALLING
VERTICAL RUNS (NEW CONSTRUCTION SHOWN)
NOTE — Insulate liquid line when it is routed through areas where the
surrounding ambient temperature could become higher than the
temperatureof the liquid line or when pressure drop is equal to or greater
than 20 psig.
NON-CORROSIVE
METAL SLEEVE
NON-CORROSIVE
METAL SLEEVE
8 FEET (2.43 METERS)
Figure 8. Line Set Installation

Page 19
XP14 SERIES
Brazing Connections
Use the procedures outline in figures 9 and 10 for brazing
line set connections to service valves.
WARNING
Danger of fire. Bleeding the refrigerant
charge from only the high side may result
in pressurization of the low side shell and
suction tubing. Application of a brazing
torch to a pressurized system may result
in ignition of the refrigerant and oil
mixture - Check the high and low
pressures before applying heat.
WARNING
When using a high pressure gas such as
dry nitrogen to pressurize a refrigeration
or air conditioning system, use a
regulator that can control the pressure
down to 1 or 2 psig (6.9 to 13.8 kPa).
CAUTION
Brazing alloys and flux contain materials which are
hazardous to your health.
Avoid breathing vapors or fumes from brazing
operations. Perform operations only in well-ventilated
areas.
Wear gloves and protective goggles or face shield to
protect against burns.
Wash hands with soap and water after handling brazing
alloys and flux.
IMPORTANT
Connect gauge set low pressure side to vapor line
service valve and repeat procedure starting at
paragraph 4 for brazing the liquid line to service port
valve.
IMPORTANT
Allow braze joint to cool before removing the wet rag
from the service valve. Temperatures above 250ºF can
damage valve seals.
IMPORTANT
Use silver alloy brazing rods with 5% minimum silver
alloy for copper-to-copper brazing. Use 45% minimum
alloy for copper-to-brass and copper-to-steel brazing.
WARNING
Fire, Explosion and Personal Safety
Hazard.
Failure to follow this warning could
result in damage, personal injury or
death.
Never use oxygen to pressurize or
purge refrigeration lines. Oxygen,
when exposed to a spark or open
flame, can cause fire and/or an ex
plosion, that could result in property
damage, personal injury or death.

Page 20
ATTACH THE MANIFOLD GAUGE SET FOR BRAZING LIQUID AND SUCTION / VAPOR LINE SERVICE
VALVES
OUTDOOR
UNIT
LIQUID LINE
VAPOR LINE
LIQUID LINE SERVICE
VALVE
SUCTION /
VAPOR LINE
SERVICE
VALVE
ATTACH
GAUGES
INDOOR
UNIT
SUCTION / VAPOR SERVICE PORT MUST BE
OPEN TO ALLOW EXIT POINT FOR NITROGEN
A Connect gauge set low pressure side to
liquid line service valve (service port).
B Connect gauge set center port to bottle of
nitrogen with regulator.
C Remove core from valve in suction / vapor
line service port to allow nitrogen to escape.
NITROGEN
HIGHLOW
USE REGULATOR TO FLOW
NITROGEN AT 1 TO 2 PSIG.
B
A
C
WHEN BRAZING LINE SET TO
SERVICE VALVES, POINT FLAME
AWAY FROM SERVICE VALVE.
Flow regulated nitrogen (at 1 to 2 psig) through the low-side refrigeration gauge set into the liquid line service port valve, and out of the suction /
vapor line service port valve.
CUT AND DEBUR CAP AND CORE REMOVAL
Cut ends of the refrigerant lines square (free from nicks or dents)
and debur the ends. The pipe must remain round. Do not crimp end
of the line.
Remove service cap and core from
both the suction / vapor and liquid line
service ports.
12
LIQUID LINE SERVICE
VALVE
SERVICE
PORT
CORE
SERVICE PORT
CAP
SERVICE
PORT
CORE
SERVICE
PORT CAP
CUT AND DEBUR
LINE SET SIZE MATCHES
SERVICE VALVE CONNECTION
COPPER TUBE
STUB
SERVICE VALVE
CONNECTION
REFRIGERANT LINE
DO NOT CRIMP SERVICE VALVE
CONNECTOR WHEN PIPE IS
SMALLER THAN CONNECTION
REDUCER
3
SUCTION / VAPOR LINE
SERVICE VALVE
LINE SET SIZE IS SMALLER
THAN CONNECTION
Figure 9. Brazing Procedures