Lennox XP16?024, XP16-036, XP16-048, XP16-060 User Manual

E N G I N E E R I N G D A T A

H E A T P U M P O U T D O O R U N I T S

XP16

ELITE® SERIES

R−410A − Two−Stage Compressor

Bulletin No. 210463

May 2008

Supersedes June 2007

MODEL NUMBER IDENTIFICATION

P 16 036− −

X 2−

Refrigerant Type

X = R−410A

Unit Type

P = Heat Pump

Series

SEER − up to 17.0

2 to 5 Tons

Cooling Capacity − 23,200 to 58,500 Btuh

Heating Capacity − 21,200 to 54,000 Btuh

230

Minor Revision Number

Voltage

230 = 208/230V−1ph−60hz

Nominal Cooling Capacity

024 = 2 tons
036 = 3 tons
048 = 4 tons
060 = 5 tons

FEATURES

CONTENTS

ARI Indoor Coil / Air Handler Substitutions Page 8. . . . . .

ARI Ratings Pages 9−13. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Dimensions Page 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Electrical Data Page 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Features Pages 2−4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Field Wiring Page 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Indoor Coil/Air Handler Substitution Page 8. . . . . . . . . . . .

Installation Clearances Page 7. . . . . . . . . . . . . . . . . . . . . . .

Model Number Identification Page 1. . . . . . . . . . . . . . . . . .

Optional Accessories Page 5. . . . . . . . . . . . . . . . . . . . . . . .

Sound Data Page 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Specifications Page 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Equipment Warranty

Compressor − limited warranty for ten years in
residential installations and five years in non-residential
installations.
All other covered components − five years in
residential installations and one year in non-residential
installations.
Refer to Lennox Equipment Limited Warranty certificate
included with unit for specific details.

Approvals

Certified in accordance with USE certification program
which is based on ARI Standard 210/240−2005.
Sound rated in Lennox reverberant sound test room in
accordance with test conditions included in ARI Standard
270−95.
Tested in the Lennox Research Laboratory environmental
test room.
Rated according to U.S. Department of Energy (DOE) test
procedures.
Heat pumps and components within bonded for
grounding to meet safety standards for servicing required
by UL and CEC.
Units are UL and ULC listed.
ISO 9001 Registered Manufacturing Quality System.

NERGY STAR® certified units are designed to use less

E
energy, help save money on utility bills, and help protect
the environment.

ApplicationS

SEER up to 17.0.
Heating COP up to 3.82.
HSPF (region IV) up to 8.70.
2 through 5 ton.
Single phase power supply.
Sound levels as low as 74 dB.
Vertical air discharge allows concealment behind shrubs
at grade level or out of sight on a roof.
Designed for applications with remotely located indoor air
handlers or add−on indoor coils with FM21
furnace control. See FM21
Also see Indoor Coils and Air Handlers sections for indoor
unit data.
Units shipped completely factory assembled, piped, and
wired. Each unit is test operated at the factory insuring
proper operation.
Installer must set heat pump, connect refrigerant lines,
and make electrical connections to complete job.

For expanded ratings, see www.lennoxdavenet.com.

®

bulletin, Controls section.

®

dual fuel

B

J

C

I

D

H

G

F

E

L

M

REFRIGERATION SYSTEM

Refrigerant

Non−chlorine, ozone friendly, R−410A.
Unit is factory pre−charged. See
Specification table.
Total system refrigerant charge is dependant on outdoor
unit size, indoor unit size and refrigerant line length. Refer
to charging procedures in the Installation Instructions to
determine correct amount of charge required.

Outdoor Coil Fan

B

Direct drive fan moves large air volumes uniformly
through entire condenser coil for high refrigerant cooling
capacity.
Vertical air discharge minimizes operating sounds and
eliminates damage to lawn and shrubs.
Fan motor has sleeve bearings and is inherently
protected.
Motor totally enclosed for maximum protection from
weather, dust and corrosion
Fan guard constructed of corrosion−resistant PVC
(polyvinyl chloride) coated steel.
Fan service access accomplished by removal of fan
guard.

K

XP16 − 2 to 5 Ton Heat Pump / Page 2

FEATURES

REFRIGERATION SYSTEM (CONTINUED)

Copper Tube/Enhanced Fin Coil

C

Lennox designed and fabricated coil.
Ripple−edged aluminum fins.
Copper tube construction.
Lanced fins provide maximum exposure of fin surface to
air stream resulting in excellent heat transfer.
Fin collars grip tubing for maximum contact area.
Inverted coil circuiting prevents ice buildup at coil base in
low ambients. Discharge gas enters bottom of coil during
defrost and heat of refrigerant flows counter to water
drainage resulting in extremely clean and unobstructed
fins and tubes.
Fin spacing allows rapid and complete water drainage.
Flared shoulder tubing connections/silver soldering
construction.
Coil is factory tested under high pressure to insure
leakproof construction.
Entire coil is accessible for cleaning.

Expansion Valve − Outdoor Unit

D

Designed and sized specifically for use in heat pump
system.
Sensing bulb is located on the line between reversing valve
and the coil thus sensing suction temperature in any cycle.
Factory installed and piped.

Discharge Temperature Switch

Shuts off unit if operating conditions cause the
compressor discharge line temperature to rise above
setpoint.
Protects compressor from excessive pressure /
temperature.
Automatic reset when temperature drops below setpoint.

High Pressure Switch

E

Shuts off unit if abnormal operating conditions cause the
discharge pressure to rise above setting.
Protects compressor from excessive condensing
pressure.
Manual reset.

Low Pressure Switch

F

Shuts off unit if suction pressure falls below setting.
Provides loss of charge and freeze-up protection.
Automatic reset.

Hi-Capacity Liquid Line Drier

G

Factory installed in the liquid line, the drier traps moisture
or dirt that could contaminate the refrigerant system.
100% molecular−sieve bead type drier.

Reversing Valve

H

4-way interchange reversing valve effects a rapid change
in direction of refrigerant flow resulting in quick
changeover from cooling to heating and vice versa.
Valve operates on pressure differential between outdoor
unit and indoor unit of the system. Factory installed.

OPTIONS

Expansion Valve Kits

Must be ordered extra and field installed on certain indoor
units. See ARI Ratings tables.
Chatleff style fitting.

Freezestat

Installs on or near the discharge line of the evaporator or
on the suction line.
Senses suction line temperature and cycles the
compressor off when suction line temperature falls below
it’s setpoint.
Opens at 29°F and closes at 58°F.

Refrigerant Line Kits

Refrigerant lines (suction & liquid) are shipped
refrigeration clean. Lines are cleaned, dried, pressurized,
and sealed at factory.
Suction line fully insulated.
L15 lines are stubbed at both ends.
See Specifications table for selection.
Not available for −060 model and must be field fabricated.

COMPRESSOR

Copeland Scroll Ultra Techt Two−Stage Compressor

I

Compressor features high
efficiency with uniform
suction flow, constant
discharge flow and high
volumetric efficiency and
quiet operation.
Compressor consists of
two involute spiral scrolls
matched together to
generate a series of
crescent shaped gas
pockets between them.
During compression, one
scroll remains stationary
while the other scroll orbits
around it.
Gas is drawn into the outer
pocket, the pocket is sealed as the scroll rotates.
As the spiral movement continues, gas pockets are
pushed to the center of the scrolls. Volume between the
pockets is simultaneously reduced.
When pocket reaches the center, gas is now at high
pressure and is forced out of a port located in the center

Slider Ring

Fixed scroll

efficiency.
Scroll compressor is tolerant to the effects of slugging
and contaminants. If this occurs, scrolls separate,
allowing liquid or contaminants to to be worked toward
the center and discharged.
On the fixed scroll there are two bypass ports in the first
suction pocket. On the outside of the fixed scroll there is a
slider ring" that is controlled by an internal solenoid that
will rotate and cover the bypass ports. When the
thermostat calls for first−stage cooling, the bypass ports
are open and the compressor operates at 67% capacity,
creating more cost−effective and efficient compressor
operation. The bypassed refrigerant is returned to the
compressor housing through the bypass ports. When
the thermostat calls for second−stage cooling, the
internal solenoid is energized, the slider ring rotates and
covers the bypass ports, and the compressor operates
at full capacity.
Low gas pulses during compression reduces
operational sound levels.
Compressor motor is internally protected from
excessive current and temperature.
Compressor is installed in the unit on specially
formulated, resilient rubber mounts for better sound
dampening and vibration free operation.

Internal solenoid

XP16 − 2 to 5 Ton Heat Pump / Page 3

Slider

Ring

Internal

solenoid

of the fixed scrolls. During
compression, several
pockets are compressed
simultaneously resulting in
a smooth continuous
compression cycle.
Continuous flank contact,
maintained by centrifugal
force, minimizes gas
leakage and maximizes

FEATURES

COMPRESSOR (CONTINUED)

Crankcase Heater

Crankcase heater prevents migration of liquid refrigerant
into compressor and ensures proper compressor
lubrication.

CONTROLS

Defrost Control

J

Solid-state control furnished as standard.
Gives a demand defrost cycle whenever system heating
performance falls below optimum levels. The sensing
element on coil determines when defrost cycle is required
and when to terminate cycle.
Anti−short cycle (5 minutes) incorporated into the board.
Diagnostic LED’s furnished as an aid in troubleshooting.
Conveniently located in control box.

OPTIONS

ComfortSenset 7000 Touchscreen Thermostat

Electronic 7−day, universal,
multi−stage, programmable,
touchscreen thermostat.
4 Heat/2 Cool.
Auto−changeover.
Controls humidity during
cooling mode.
Offers enhanced
capabilities including
humidification / dehumidification / dewpoint measurement
and control, Humiditrol
maintenance reminders.
Easy−to−use, menu driven thermostat with a back−lit, LCD
touchscreen.
Remote outdoor temperature sensor (optional) allows the
thermostat to display outdoor temperature. Required in
dual fuel and Humiditrol
See the ComfortSenset 7000 Engineering Handbook
bulletin in the Controls section for more information.

Compressor Hard Start Kit

Single−phase units are equipped with a PSC compressor
motor.
This type of motor normally does not need a potential
relay and start capacitor.
In conditions such as low voltage, kit may be required to
increase the compressor starting torque.
Hard start kit is required in applications where the supply
voltage is less than 230V.

Indoor Blower Off Delay Relay

Delays the indoor blower−off time during the cooling cycle.
See ARI Rating Tables for usage.

Indoor Blower Speed Relay Kit

Relay kit provides optimum humidity control conditions by
automatically reducing indoor blower speed during
continuous fan or first−stage compressor operation.

Low Ambient Kit

Heat pump will operate in the cooling mode satisfactorily
down to 45_F outdoor air temperature without any additional
controls.
Kit can be added in the field enabling unit to operate
properly down to 30_F.
A Freezestat should be installed on compressors
equipped with a low ambient kit.
A Compressor Low Ambient Cut−Off should be added to
terminate compressor operation below recommended
operation conditions (on/off operation, 30°F or modulating
operation, 0°F.

®

control, and equipment

®

applications.

Mild Weather Kit

Heat pump units operate satisfactorily in the heating
mode at outdoor air temperatures up to 75_F.
Mild Weather Kit can be field installed, allowing heating
operation above 75_F.

Monitor Kit − Service Light

Contains ambient compensating thermistor and service
light thermostat.
For use with thermostats requiring input for indicator
lights.

Outdoor Thermostat Kit

An outdoor thermostat can be used to lock out some of the
electric heating elements on indoor units where two−stage
control is applicable.
Outdoor thermostat maintains the heating load on the low
power input as long as possible before allowing the full
power load to come on the line.
Thermostat kit and mounting box must be ordered extra.

Cabinet

K

Heavy−gauge steel construction
Pre−painted cabinet finish.
Pre−painted base section.
Control box is conveniently located with all controls
factory wired.
Large removable panel provides service access.
Drainage holes are provided in base section for moisture
removal.
High density polyethylene unit support feet raise the unit off
of the mounting surface, away from damaging moisture.

SmartHinget Louvered Coil Protection

L

Steel louvered panels
provides complete coil
protection.
Panels are hinged to
allow easy cleaning
and servicing of coils.
Panels may be
completely removed.
Interlocking tabs and
slots assure tight fit on
cabinet.

Refrigerant Line Connections, Electrical Inlets and
Service Valves

Vapor and liquid lines are located on corner of unit cabinet
and are made with sweat connections. See dimension
drawing.
Fully serviceable brass service valves prevent corrosion

M

and provide access to refrigerant system. Vapor valve can
be fully shut off, while liquid valve may be front seated to
manage refrigerant charge while servicing system.
Refrigerant line connections and field wiring inlets are
located in one central area of the cabinet. See dimension
drawing.

XP16 − 2 to 5 Ton Heat Pump / Page 4

SPECIFICATIONS

p

p q

General
Data

Connections
(sweat)

Refrigerant

Outdoor

1

R−410A charge furnished 7 lbs. 13 oz. 10 lbs. 4 oz. 15 lbs. 7 oz. 11 lbs. 7 oz.

Net face area − sq. ft. Outer coil 13.22 18.67 24.5 24.93

Nominal Tonnage 2

Liquid line (o.d.) − in. 3/8 3/8 3/8 3/8

Vapor line (o.d.) − in. 3/4

Coil

Tube diameter − in. 5/16 5/16 5/16 5/16

Outdoor
Fan

Shipping Data − lbs. 1 pkg. 219 265 309 345

ELECTRICAL DATA

Line voltage data − 60hz

2

Maximum overcurrent protection (amps) 20 35 45 60

3

Minimum circuit ampacity 14.0 22.0 28.2 33.9

Compressor

Locked rotor amps 52 82 96 118

Outdoor Coil
Fan Motor

Locked rotor amps 2

OPTIONAL ACCESSORIES − must be ordered extra

ComfortSenset 7000 Thermostat Y0349 S S S S

Outdoor Temperature Sensor − for

ComfortSenset 7000 Thermostat

Compressor Hard Start Kit − Required
in applications with less than 230V

Compressor Low Ambient Cut−Off 45F08 S S S S

Freezestat

Indoor Blower Speed Relay Kit 40K58 S S S S

Indoor Blower Off Delay Relay 58M81 S S S S

Low Ambient Kit 68M04 S S S S

Mild Weather Kit 33M07 S S S S

Monitor Kit − Service Light 76F53 S S S S

Outdoor
Thermostat
Kit

Refrigerant
Line Sets

NOTE − Extremes of operating range are plus 10% and minus 5% of line voltage.

1

Refrigerant charge sufficient for 15 ft. length of refrigerant lines.

2

HACR type breaker or fuse.

3

Refer to National or Canadian Electrical Code manual to determine wire, fuse and disconnect size requirements.

4

Hard start kit is required in applications where the supply voltage is less than 230V.

3/8 in. tubing 93G35 S S S S

5/8 in. tubing 50A93 S S S S

Thermostat 56A87 S S S S

Mounting Box 31461 S

L15−41−20
L15−41−30

L15−65−30 L15−65−40

Model No. XP16−024 XP16−036 XP16−048 XP16−060

3 4 5

7/8 7/8 1−1/8

Inner coil 12.65

18.0 23.64 24.14

No. of rows 2 2 2 2

Fins per inch 22 22 22 22

Diameter − in. 18 22 22 26

No. of blades 3

4 4 3

Motor hp 1/10 1/6 1/4 1/3

Cfm 2215 3150 3980 4380

Rpm 1040 844 836 850

Watts 145 215 305 280

4

208/230V−1ph

4

208/230V−1ph

4

208/230V−1ph

4

208/230V−1ph

Rated load amps 10.25 16.67 21.15 25.87

Power factor 0.98 0.99 0.99 0.99

Full load amps 1.1 1.1 1.7 1.8

2.1 3.1 2.9

X2658 S S S S

10J42 S S

81J69

S S

S S S

L15−41−40

S

L15−41−50

S S

L15−65−50

Field Fabricate S

XP16 − 2 to 5 Ton Heat Pump / Page 5