Lennox Elite ELXC Series User manual

Page 1
THIS MANUAL MUST BE LEFT WITH THE
BUILDING OWNER FOR FUTURE REFERENCE
WARNING
Improper installation, adjustment, alteration, service
or maintenance can cause property damage, personal
injury or loss of life. Installation and service must be
performed by a licensed professional HVAC installer or
equivalent, or service agency.
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.
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.
WARNING
To prevent serious injury or death:
1. Lock-out/tag-out before performing maintenance.
2. If system power is required (e.g., smoke detector
maintenance), disable power to blower, remove fan
belt where applicable, and ensure all controllers
and thermostats are set to the “OFF” position before
performing maintenance.
3. Always keep hands, hair, clothing, jewelry, tools, etc.
away from moving parts.
INSTALLATION
INSTRUCTIONS
AIR CONDITIONERS
6 - 20 TONS
508322-01
10/2022
Elite®ELXC Series
6 – 20 Ton
Shipping and Packing List
Check the unit for shipping damage. If damaged or parts
are missing, immediately contact the last shipping carrier.
1 - Assembled outdoor unit
1 - Installation instructions
Outdoor Unit
Elite Series air conditioners, which will also be referred to
in this instruction as the outdoor unit, use HFC-410A re-
frigerant. This outdoor unit must be installed with a match-
ing indoor unit and line set as outlined in the Elite Series
Engineering Handbook.
This outdoor unit is designed for use in thermal expansion
valve (TXV) systems only.
Table of Contents
Model Number Identication ..........................................2
Unit Dimensions, Corner Weights and Centers of Gravity 3
Unit Plumbing Parts Arrangement ..................................6
Unit Control Box Components Arrangement ................12
Rigging the Unit for Lifting ...........................................13
Installation Clearances ................................................14
Line Set .......................................................................14
Electrical Connections .................................................15
Refrigerant Charge ......................................................21
System Operation ........................................................21
Maintenance ................................................................22

Page 2
Model Number Identication
EL 120 X C S D T 1 Y
Brand/Family
EL = Elite®Product Line
Minor Design Sequence
1 = 1st Revision
Voltage
Y = 208/230V-3 phase-60Hz
G = 460V-3 phase-60Hz
J = 575V-3 phase-60Hz
Nominal Cooling Capacity − Tons
072 = 6 Tons
090 = 7.5 Tons
120 = 10 Tons
150 = 12.5 Tons
180 = 15 Tons
240 = 20 Tons Part Load Capability
T = Two-Stage Compressor
Refrigerant Type
X = R−410A
Unit Type
C = Split System Air Conditioner
Refrigerant Circuits
S = Single Circuit
D = Dual Circuits

Page 3
Unit Dimensions, Corner Weights and Centers of Gravity
DISCHARGE
AIR
SUCTION
LINE
LIQUID
LINE
BBAA
CC
DD
REFRIGERANT
LINE CONNECTIONS
SEE DETAIL
REFRIGERANT LINE
CONNECTIONS DETAIL
EE
FF
CONTROL
BOX ACCESS
COMPRESSOR COMPRESSOR
CENTER OF
GRAVITY
INLET AIR
INLET AIR
DISCHARGE
AIR
BASE
LIFTING HOLES
(For Rigging)
FORKLIFT SLOTS
(Both Sides)
TOP VIEW
OUTDOOR
FAN GUARD
BASE
ELECTRICAL
INLETS (Above
Refrigerant Lines)
INLET AIR
ELECTRICAL
INLETS (Above
Refrigerant Lines)
OPTIONAL
COIL/HAIL GUARDS
FRONTVIE
WS
IDEVIEW
OPTIONAL
COIL/HAIL GUARDS
OPTIONAL
COIL/HAIL GUARDS
48-3/8
(1229)
46-1/8
(1172)
39-7/8
(1013)
9-1/8
(232)
1-1/8
(29)
2-1/8
(54)
37-5/8
(956)
48-3/4
(1238)
3-1/2
(89)
45-1/4
(1149)
1-1/8
(29)
5
(127)
2 (51)
Model
No.
CORNER WEIGHTS CENTER OF GRAVITY
AA BB CC DD EE FF
lbs. kg lbs. kg lbs. kg lbs. kg in.mmin. mm
EL072XCSS 66 30 73 33 97 44 82 37 23-1/4 591 19-1/4489
EL090XCSS 75 34 89 40 11251884025 635 20-1/4 514
EL072XC | EL090XC

Page 4
DISCHARGE
AIR
REFRIGERANT
LINE CONNECTIONS
SEE DETAIL
DISCHARGE
AIR
41-3/8
(1051)
LIFTING HOLES
(For Rigging)
SIDE VIEW
43-5/8
(1108)
48-3/4
(1238)
3-1/2
(89)
45-1/4
(1149)
BASE
60-1/8
(1527)
57-7/8
(1470)
COMPRESSOR
BASE
FRONT VIEW
FORKLIFT SLOTS
(Both Sides)
CONTROL
BOX ACCESS
ELECTRICAL
INLETS (Above
Refrigerant Lines)
TOP VIEW
FF
EE
INLET AIR
INLET AIR
BBAA
CC
DD
CENTER OF
GRAVITY
ELECTRICAL
INLETS (Above
Refrigerant Lines)
OUTDOOR FAN
GUARDS (2)
INLET AIR
2(51)
5
(127)
2-1/8
(54)
9-1/8
(232)
1-1/8
(29)
3-3/4
(95)
6-1/2
(165)
SUCTION
LINES
LIQUID
LINES
SINGLE STAGE
EL120XCSS
STAGE 1
EL120XCSD
EL150XCSD
STAGE 2
EL120XCSD
EL150XCSD
1-1/8
(29)
REFRIGERANT LINE
CONNECTIONS DETAIL
OPTIONAL
COIL/HAIL GUARDS
OPTIONAL
COIL/HAIL GUARDS
OPTIONAL
COIL/HAIL GUARDS
Model
No.
CORNER WEIGHTS CENTER OF GRAVITY
AA BB CC DD EE FF
lbs. kg lbs. kg lbs. kg lbs.kgin. mm in
.m
m
EL120XCSS 130 59 124 56 107 49 1115020-1/2 521 33-1/2851
EL120XCSD 122 55 11954 127 58 131 59 21 533 28-1/2 724
EL150XCSD 144 66 132 60 133 60 1456619483 30 762
EL120XC | EL150XC

Page 5
1-1/8
(29)
DISCHARGE
AIR
INLET
AIR
86-1/2
(2197)
60-1/8
(1527)
57-7/8
(1470)
CONTROL
BOX ACCESS
BASE
LIFTING HOLES
(For Rigging)
FRONT VIEW
5
(127)
2-1/8
(54)
9-1/8
(232)
1-1/8
(29)
TOP VIEW
FORKLIFT SLOTS
(Both Sides)
SIDE VIEW
88-3/4
(2254)
48-3/4
(1238)
3-1/2
(89)
45-1/4
(1149)
FF
EE
CENTER OF
GRAVITY
AA BB
CC
DD
3-3/4
(95)
6-1/2
(165)
BASE
COMPRESSOR
SUCTION
LINE (2)
LIQUID
LINE (2)
OUTDOOR FAN
GUARDS (4)
REFRIGERANT LINE
CONNECTIONS DETAIL
INLET
AIR
INLET
AIR
ELECTRICAL
INLETS (Above
Refrigerant Lines)
DISCHARGE
AIR
REFRIGERANT
LINE CONNECTIONS
SEE DETAIL
ELECTRICAL
INLETS (Above
Refrigerant Lines)
STAGE 1STAGE 2
2(51)
OPTIONAL
COIL/HAIL GUARDS
OPTIONAL
COIL/HAIL GUARDS
OPTIONAL
COIL/HAIL GUARDS
Model
No.
CORNER WEIGHTS CENTER OF GRAVITY
AA BB CC DD EE FF
lbs. kg lbs. kg lbs. kg lbs. kg in.mmin. mm
EL180XCSD 181 82 177 81 215 98 221100 29 7373
89
65
EL240XCSD 192 87 189 86 232 105 238 108 29 737 37-1/2953
EL180XC | EL240XC

Page 6
Unit Plumbing Parts Arrangement
EL072XCSS
EL090XCSS

Page 7
EL120XCSS
EL120XCSD – STAGE 2

Page 8
EL120XCSD – STAGE 1
EL150XCSD – STAGE 2

Page 9
EL150XCSD – STAGE 1
EL180XCSD – STAGE 2

Page 10
EL180XCSD – STAGE 1
EL240XCSD – STAGE 2

Page 11
EL240XCSD – STAGE 1

Page 12
Unit Control Box Components Arrangement

Page 13
Rigging the Unit for Lifting
Rig the unit for lifting by attaching four cables to the holes
in the base rail of the unit. See gures 1 through 3.
1 - Remove protective packaging before rigging the
unit for lifting.
2 - Connect the rigging to the holes in each corner of
the unit’s base.
3 - All panels must be in place for rigging.
4 - Place a eld-provided H-style frame just above the
top edge of the unit. The frame must be of adequate
strength and length. (An H-style frame will prevent
the top of the unit from being damaged.)
Caution - do not walk on unit.
Important - all panels must be in place for rigging.
Lifting point should be directly above the center of gravity.
FIGURE 1. ELITE SERIES AIR CONDITIONERS
(ONE FAN)
Caution - do not walk on unit.
Lifting point should be directly above the center of gravity.
Important - all panels must be in place for rigging.
FIGURE 2. ELITE SERIES AIR CONDITIONERS
(TWO FANS)
Caution - do not walk on unit.
Lifting point should be directly above the center of gravity.
Important - all panels must be in place for rigging.
FIGURE 3. ELITE SERIES AIR CONDITIONERS
(FOUR FANS)

Page 14
Installation Clearances
See Unit Dimensions on page 2 for sizing mounting slab,
platforms or supports. Refer to gures 4 through 6 for
mandatory installation clearance requirements.
NOTES:
• Clearance to one of the remaining two sides may be 12
in. (305 mm) and the nal side may be 6 in. (152 mm).
• A clearance of 24 in. (610 mm) must be maintained be-
tween two units.
• 48 in. (1219 mm) clearance required on top of unit.
CONTROL BOX
ACCESS
30”
(762)
SEE
NOTES
SEE
NOTES
36”
(914)
FIGURE 4. ELITE SERIES AIR CONDITIONERS
(One Fan) Installation Clearances
CONTROL BOX
ACCESS
SEE
NOTES
SEE
NOTES
36”
30”
FIGURE 5. ELITE SERIES AIR CONDITIONERS
(Two Fans) Installation Clearances
CONTROL
BOX ACCESS
30”
36”
SEE
NOTES
SEE
NOTES
FIGURE 6. ELITE SERIES AIR CONDITIONERS
(Four Fans) Installation Clearances
Line Set
Field refrigerant piping consists of liquid and suction lines
connecting the condensing unit and the indoor unit. Liquid
and suction service valves are located in a compartment
at the corner of the unit below the control box.
Piping can be routed directly from the service valves or
eld supplied elbows can be added to divert the piping as
required.
Refer to table 1 for eld-fabricated refrigerant line sizes for
runs up to 50 linear feet (15 m).
TABLE 1. Refrigerant Line Sizes for Runs
Up to 50 Linear Feet
Unit Liquid Line Suction Line
EL072XCSS 3/8" (10mm) 1-1/8ʺ (29mm)
EL090XCSS 5/8" (16mm) 1-1/8ʺ (29mm)
EL120XCSS 5/8" (16mm) 1-1/8ʺ (29mm)
EL120XCSD 3/8" (10mm) 1-1/8ʺ (29mm)
EL150XCSD 3/8" (10mm) 1-1/8ʺ (29mm)
EL180XCSD 5/8ʺ (16mm) 1-1/8ʺ (29mm)
EL240XCSD 5/8ʺ (16mm) 1-1/8ʺ (29mm)
Refrigerant Line Limitations
You may install the unit in applications that have line set
lengths of up to 50 linear feet (15 m) with refrigerant line
sizes as outlined in table 1 (excluding equivalent length of
ttings). Size refrigerant lines greater than 50 linear feet
(15m or greater) according to the Lennox Refrigerant Pip-
ing Design and Fabrication Guidelines (Corp. 9351-L9) or
latest version.

Page 15
Electrical Connections
In the United States, wiring must conform with current lo-
cal codes and the current National Electric Code (NEC). In
Canada, wiring must conform with current local codes and
the current Canadian Electrical Code (CEC).
TRANSFORMER – 24V
Use the transformer provided with the air conditioning unit
for low-voltage control power (24V, 90VA)
NOTE – The addition of accessories to the system could
exceed the 90VA power requirement of the factory-pro-
vided transformer. Measure the system’s current and
voltage after installation is complete to determine trans-
former loading. If loading exceeds the factory-provided
transformer capacity, a larger eld-provided transformer
will need to be installed in the system.
Refer to the unit nameplate for minimum circuit ampacity amperage
minimum, and maximum fuse or circuit breaker fusible (HACR per
NEC). Install power wiring and properly sized disconnect switch.
NOTE —UNITS ARE APPROVED FOR USE ONLY WITH COPPER
CONDUCTORS. GROUND UNIT AT DISCONNECT SWITCH OR TO AN EARTH
GROUND.
CIRCUIT SIZING AND DISCONNECT SWITCH
DISCONNECT
SWITCH
MAIN FUSE
BOX/BREAKER
PANEL
1
2
TYPICAL HIGH VOLTAGE POWER SUPPLY
CONNECTIONS
SINGLE COMPRESSOR MODELS
TWO COMPRESSOR
MODELS
Install room thermostat (ordered separately) on an inside wall
approximately in the center of the conditioned area and 5 feet (1.5m)
from the floor. It should not be installed on an outside wall or where it
can be affected by sunlight, drafts or vibrations.
THERMOSTAT
5 FEET
(1.5M)
INSTALL THERMOSTAT
3
WARNING
Electric Shock Hazard. Can cause injury or
death. Unit must be properly 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.

Page 16
24 VAC
K232
factory
9
6
R
C1
H1
C2
C3
H2
C
R
G
Y2
O
B
Y1
W1
C
W2
D
Ti
Tc
To
Y3
A
4
FIGURE 7. Typical Field Wiring – Single Compressor
24 VAC
K232
factory
9
6
R
C1
H1
C2
C3
H2
C
R
G
A
Y2
O
B
Y1
W1
C
W2
D
Ti
Tc
To
Y3
4
FIGURE 8. Typical Field Wiring – Two Compressors

Page 17
TYPICAL UNIT CONTROL WIRE CONNECTIONS
5
WIRE RUN LENGTH AWG# INSULATION TYPE
LESS THAN 100’ (30M) 18 TEMPERATURE RATING
MORE THAN 100’ (30M) 16 35°C MINIMUM
ARUN CONTROL WIRES THROUGH RIGHT CUTOUT.
B RUN CONTROL WIRES THROUGH WIRE TIES.
CTIGHTEN WIRE TIE TO SECURE 24VDC CONTROL WIRING.
NOTE - FOR PROPER VOLTAGES, SELECT THERMOSTAT WIRE (CONTROL
WIRING) GAUGE PER TABLE ABOVE.
NOTE - WIRE TIE PROVIDES LOW VOLTAGE WIRE STRAIN RELIEF AND
MAINTAINS SEPARATION OF FIELD INSTALLED LOW AND HIGH VOLTAGE
CIRCUITS.
NOTE - DO NOT BUNDLE ANY EXCESS 24VAC CONTROL WIRES INSIDE
CONTROL BOX.
C

Page 18
FIGURE 9. Typical Wiring Diagram – Elite Series Air Conditioners

Page 19
New Form No.
Supersedes
WIRING DIAGRAM
EL120-150XCSDT - G,J,Y
10/22
DUAL SPEED COMPRESSOR
SECTION A 3 REV. 1
537904-02 537904-03
RTB14
4
CB8
3 1
2 2
LINE VOLTAGE FIELD INSTALLED
DENOTES OPTIONAL COMPONENTS
240 / 460 / 575V
400V 208V
P36
J36
3 1
K2-1
K2-2
K1-1
K1-2
B4 B5
C1 C2
CLASS II FIELD WIRING
K10,-1 RELAY, OUTDOOR FAN 1, 2
S4 SWITCH, LIMIT HI PRESS COMPRESS 1
S7 SWITCH, LIMIT HI PRESS COMPRESS 2
T1 TRANSFORMER, CONTROL
TB2 TERMINAL STRIP, UNIT
KEY COMPONENT
S24 SWITCH, LOSS OF CHARGE COMPRESS 1
S25 SWITCH, LOSS OF CHARGE COMPRESS 2
KEY COMPONENT
TB2
TB14
C
2
5
S25 S24
C2
C1
COOL 2
COOL 1
31
S7 S4
P36
J36
P36
J36
P36
J36
P36
J36
K1 K10
K2
K149
TB14
TB14
C3
COOL 3
TB14
6
P36J36
2
3 1
B5
C2
DL58
FIGURE 10. Typical Wiring Diagram – Elite Series Air Conditioners

Page 20
New Form No.
Supersedes
WIRING DIAGRAM
EL180-240XC - G,J,Y
10/22
DUAL SPEED COMPRESSOR
SECTION A 4 REV. 1
537905-02 537905-03
RTB14
4
CB8
2
5
S25 S24
C2
C1
COOL 2
COOL 1
31
TB14
C
3 1
2 2 2 2
LINE VOLTAGE FIELD INSTALLED
DENOTES OPTIONAL COMPONENTS
240 / 460 / 575V
400V 208V
S7 S4
P36
J36
P36
J36
P36
J36
P36
J36
P36
J36
3 1 3 1 3 1
K1 K10
K2
K149
K2-1
K2-2
K1-1
K1-2
B4 B5 B21 B22
C1 C2 C18 C19
CLASS II FIELD WIRING
K10,-1 RELAY, OUTDOOR FAN 1, 2
K149,-1 RELAY, OUTDOOR FAN 3, 4
S4 SWITCH, LIMIT HI PRESS COMPRESS 1
S7 SWITCH, LIMIT HI PRESS COMPRESS 2
T1 TRANSFORMER, CONTROL
TB2 TERMINAL STRIP, UNIT
KEY COMPONENT
S24 SWITCH, LOSS OF CHARGE COMPRESS 1
S25 SWITCH, LOSS OF CHARGE COMPRESS 2
KEY COMPONENT
TB2
TB14
TB14
L34 SOLENOID, TWO STAGE, COMP. 1
C3
COOL 3
TB14
6
P36J36
L44 SOLENOID, TWO STAGE, COMP. 2
DL58
FIGURE 11. Typical Wiring Diagram – Elite Series Air Conditioners