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.