Elite ELS090S4S, ELS072S4S Installation Instructions Manual

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.

INSTALLATION
INSTRUCTIONS

Elite® ELS Series
6 – 20 Ton

AIR CONDITIONERS
6 - 20 TONS
507743-01
8/2018

Table of Contents

Shipping and Packing List .............................................1

Outdoor Unit ..................................................................1

Unit Dimensions, Corner Weights and Centers of Gravity ...2

Unit Plumbing Parts Arrangement ..................................5

Model Number Identication ........................................ 10

Unit Control Box Components Arrangement ................11

Rigging the Unit for Lifting ...........................................12

Installation Clearances ................................................13

Line Set .......................................................................13

Electrical Connections ................................................. 13

Refrigerant Charge ...................................................... 19

System Operation ........................................................ 21

Maintenance ................................................................ 21

Shipping and Packing List

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.

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

ELS Series Air Conditioners, which will also be referred to
in this instruction as the outdoor unit, use HFC-410A re­frigerant. This outdoor unit must be installed with a match­ing indoor unit and line set as outlined in the ELS Series
Engineering Handbook.

This outdoor unit is designed for use in thermal expansion
valve (TXV) systems only.

Page 1

Unit Dimensions, Corner Weights and Centers of Gravity

ELS072S4S AND ELS090S4S

Model No.

ELS072S4S

ELS090S4S 75 34 89 40 112 51 88 40

INCHES (MM)

5

(127)

2−1/8

(54)

AA BB CC DD

lbs. kg lbs. kg lbs. kg lbs. kg

30 73 33 97 44 82 37

66

1−1/8

(29)

1−1/8

(29)

REFRIGERANT LINE

CONNECTIONS DETAIL

OPTIONAL COIL GUARD

(Field Installed All Coil Sides)

(Not used with Hail Guard)

DISCHARGE

AIR

Corner Weights

9−1/8
(232)

37−5/8

(956)

LIQUID
LINE

SUCTION
LINE

OPTIONAL HAIL GUARD

(Field Installed All Coil Sides)

(Not used with Coil Guard)

FF

ELECTRICAL
INLETS (Above
Refrigerant Lines)

Centers of Gravity

Model No.

ELS072S4S

ELS090S4S 25 635 20.3 515.6

INLET AIR

CENTER OF

GRAVITY

EE

DD

INLET AIR

TOP VIEW

DISCHARGE

AIR

EE FF

inch mm inch mm

23.2 589.3 19.2 487.7

BBAA

OUTDOOR
FAN GUARD

(Field Installed All Coil Sides)

(Not used with Hail Guard)

46−1/8
(1172)

INLET AIR

CC

OPTIONAL

COIL GUARD

11−1/4

(286)

2 (51)

OPTIONAL

HAIL GUARD

(Field Installed

All Coil Sides)

(Not used with

Coil Guard)

COMPRESSOR

LIFTING HOLES
(For Rigging)

39−7/8
(1013)

BASE

CONTROL
BOX ACCESS

REFRIGERANT

LINE CONNECTIONS

SEE DETAIL

ELECTRICAL
INLETS (Above
Refrigerant Lines)

Page 2

COMPRESSOR

FORKLIFT SLOTS
(Both Sides)

48−3/8
(1229)

BASE

WEIVEDISWEIVTNORF

45−1/4
(1149)

48−3/4
(1238)

3−1/2

(89)

OPTIONAL

COIL GUARD

(Field Installed All Coil Sides)

(Not used with Hail Guard)

ELS120S4S, ELS120S4D AND ELS150S4D

Corner Weight

Model No.

ELS 120S4S 130 59 124 56 107 49 111 50

ELS 120S4D 122 55 119 54 127 58 131 59

ELS 150S4D

5

(127)

2−1/8

(54)

AA BB CC DD

lbs. kg lbs. kg lbs. kg lbs. kg

144 66 132 60 13 3 60 145 66

9−1/8

(232)

6−1/2
(165)

3−3/4

(95)

1−1/8

(29)

1−1/8

(29)

LIQUID
LINES

SUCTION
LINES

Model No.

ELS 120S4S
ELS 120S4D 21.0 533 28.5 724

ELS 150S4D

OUTDOOR FAN

GUARDS (2)

CENTER OF

GRAVITY

FF

Centers of Gravity

EE FF

inch mm inch mm

20.5 521 33.5 851

19.0 483 30.0 762

OPTIONAL HAIL GUARD

(Field Installed All Coil Sides)

(Not used with Coil Guard)

INLET AIR

BBAA

EE

INLET AIR

SINGLE STAGE

ELS120S4S

REFRIGERANT LINE

CONNECTIONS DETAIL

OPTIONAL COIL GUARD

(Field Installed All Coil Sides)

(Not used with Hail Guard)

57−7/8
(1470)

DISCHARGE

COMPRESSOR

FORKLIFT SLOTS
(Both Sides)

FRONT VIEW

STAGE 1

ELS120S4D
ELS150S4D

AIR

60−1/8
(1527)

BASE

STAGE 2

ELS120S4D
ELS150S4D

OPTIONAL HAIL GUARD

(Field Installed All Coil Sides)

(Not used with Coil Guard)

CONTROL
BOX ACCESS

REFRIGERANT

LINE CONNECTIONS

SEE DETAIL

ELECTRICAL
INLETS (Above
Refrigerant Lines)

DD

ELECTRICAL
INLETS (Above
Refrigerant Lines)

DISCHARGE

AIR

LIFTING HOLES
(For Rigging)

INLET AIR

TOP VIEW

41−3/8
(1051)

43−5/8
(1108)

SIDE VIEW

BASE

CC

OPTIONAL

COIL GUARD

(Field Installed

All Coil Sides)
(Not used with

Hail Guard)

11−1/4

(286)

2(51)

48−3/4
(1238)

45−1/4
(1149)

OPTIONAL

COIL GUARD

(Field Installed

All Coil Sides)

(Not used with

Hail Guard)

3−1/2

(89)

Page 3

ELS180S4D AND ELS240S4D

Model No.

(127)

ELS180S4D 181 82 177 81 215 98 221 100

ELS240S4D 192 87 189 86 232 105 238 108

AA BB CC DD

lbs. kg lbs. kg lbs. kg lbs. kg

3−3/4

(95)

1−1/8

(29)

5

1−1/8

(29)

2−1/8

(54)

REFRIGERANT LINE

CONNECTIONS DETAIL

OPTIONAL COIL GUARD

(Field Installed All Coil Sides)

(Not used with Hail Guard)

DISCHARGE

Corner Weight

9−1/8

(232)

6−1/2

(165)

STAGE 1

AIR

LIQUID
LINE (2)

STAGE 2

SUCTION
LINE (2)

OPTIONAL

HAIL GUARD

(Field Installed

All Coil Sides)

(Not used with

Coil Guard)

OUTDOOR FAN

GUARDS (4)

AA

CENTER OF

GRAVITY

EE

DD

ELECTRICAL
INLETS (Above
Refrigerant Lines)

Centers of Gravity

Model No.

ELS180S4D 29 737 38 965

ELS240S4D 29 739 38 965

INLET

FF

INLET

TOP VIEW

86−1/2

(2197)

DISCHARGE

EE FF

inch mm inch mm

OPTIONAL

HAIL GUARD

(Field Installed

All Coil Sides)

(Not used with

Coil Guard)

AIR

AIR

AIR

BB

INLET

CC

OPTIONAL

COIL GUARD

(Field Installed

All Coil Sides)

(Not used with

Hail Guard)

2(51)

AIR

11−1/4

(286)

COMPRESSOR

LIFTING HOLES
(For Rigging)

60−1/8

(1527)

BASE

FRONT VIEW

CONTROL
BOX ACCESS

ELECTRICAL
INLETS (Above
Refrigerant Lines)

Page 4

REFRIGERANT

LINE CONNECTIONS

SEE DETAIL

FORKLIFT SLOTS
(Both Sides)

SIDE VIEW

88−3/4

(2254)

48−3/4

(1238)

45−1/4

(1149)

BASE

OPTIONAL COIL GUARD

(Field Installed All Coil Sides)

(Not used with Hail Guard)

Unit Plumbing Parts Arrangement

ELS072S4S

ELS090S4S

Page 5

ELS120S4S

ELS120S4D – STAGE 2

Page 6

ELS120S4D – STAGE 1

ELS150S4D – STAGE 2

Page 7

ELS150S4D – STAGE 1

ELS180S4D – STAGE 2

Page 8

ELS180S4D – STAGE 1

ELS240S4D – STAGE 2

Page 9

ELS240S4D – STAGE 1

ELSY1120 S S4 D

Model Number Identication

Brand/Family

Elite™ Product Line

S = Split System Air Conditioner

Nominal Cooling Capacity -

090 = 7.5 Tons

120 = 10 To ns

150 = 12.5 Tons

180 = 15 To ns
240 = 20 To ns

Tons

072 = 6 Tons

Minor Design Sequence

1 = 1st Revision
2 = 2nd Revision
3 = 3rd Revision

Part Load Capability

S = Single Stage Compressor

T = Two Stage Compressor

Refrigerant Circuits

S = Single Circuit
D = Dual Circuits

Refrigerant Type

4 = R-410A

Cooling Efficiency

S = Standard Efficiency

Voltage

Y = 208/230V‐3 phase‐60hz
G = 460V‐3 phase‐60hz
J = 575V‐3 phase‐60hz

M = 380/420V‐3 phase‐50hz

Page 10

Unit Control Box Components Arrangement

Page 11

Rigging the Unit for Lifting

Important - all panels must be in place for rigging.

Lifting point should be directly above the center of gravity.

Lifting point should be directly above the center of gravity.

Important - all panels must be in place for rigging.

Lifting point should be directly above the center of gravity.

Important - all panels must be in place for rigging.

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.

Caution - do not walk on unit.

FIGURE 2. ELS120S4S, ELS120S4D

and ELS150S4D

FIGURE 1. ELS072S4S and ELS090S4S

Caution - do not walk on unit.

FIGURE 3. ELS180S4D and ELS240S4D

Page 12

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 be­tween two units.

• 48 in. (1219 mm) clearance required on top of unit.

SEE

NOTES

30”

CONTROL

BOX ACCESS

36”

30”

(762)

SEE

NOTES

SEE

NOTES

FIGURE 4. ELS072 and ELS090

Installation Clearances

SEE

NOTES

SEE

NOTES

36”

FIGURE 5. ELS120S4S, ELS120S4D

and ELS150 Installation Clearances

CONTROL BOX
ACCESS

36”

(914)

30”

CONTROL BOX
ACCESS

SEE

NOTES

FIGURE 6. ELS180 and ELS240

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

ELS072 3/8" (10mm) 1-1/8” (29mm)

ELS090 5/8" (16mm) 1-1/8” (29mm)

ELS120S4S 5/8” (16mm) 1-1/8” (29mm)

ELS120S4D 3/8” (10mm) 1-1/8” (29mm)

ELS150 3/8” (10mm) 1-1/8” (29mm)

ELS180 5/8” (16mm) 1-1/8” (29mm)

ELS240 5/8” (16mm) 1-1/8” (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 Pip­ing Design and Fabrication Guidelines (Corp. 9351-L9) or
latest version.

Electrical Connections

In the United States, wiring must conform with current lo­cal codes and the current National Electric Code (NEC). In
Canada, wiring must conform with current local codes and
the current Canadian Electrical Code (CEC).

Page 13

TRANSFORMER – 24V

GROUND.

1

2

can be affected by sunlight, drafts or vibrations.

3

4

Use the transformer provided with the air conditioning unit
for low-voltage control power (24V, 70VA)

NOTE – The addition of accessories to the system could
exceed the 70VA power requirement of the factory-pro­vided transformer. Measure the system’s current and
voltage after installation is complete to determine trans­former loading. If loading exceeds the factory-provided

transformer capacity, a larger eld-provided transformer

will need to be installed in the system.

CIRCUIT SIZING AND DISCONNECT SWITCH

MAIN FUSE

BOX/BREAKER

PANEL

DISCONNECT

SWITCH

INSTALL THERMOSTAT

THERMOSTAT

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

5 FEET

(1.5M)

TYPICAL CONTROL WIRING

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 DISCONNE CT SWITCH OR TO AN EARTH

TYPICAL HIGH VOLTAGE POWER SUPPLY
CONNECTIONS

Install low voltage wiring from outdoor to indoor unit and from
thermostat to indoor unit as illustrated.

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 14

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

A

RUN CONTROL WIRES THROUGH RIGHT CUTOUT.

B RUN CONTROL WIRES THROUGH WIRE TIES.

MAKE CONTROL WIRE CONNECTIONS USING FIELD

C

PROVIDED WIRE NUTS. SEE FIGURES 7 THROUGH 10
FOR CONNECTION REQUIREMENTS.

D

TIGHTEN 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.

Page 15

R

TB14

6

CB8

T1

208V

400V

240/460/575V

24V

C2

CB8

K10,-1
K67-1

S24
T1
TB14

C1

CIRCUIT BREAKER-TRANS T1

C

SWITCH-LOSS OF CHARGE,COMP 1

TRANSFORMER-CONTROL
TERMINAL STRIP-CLASS II VOLTAGE

S24

4

1

4

COOL 2

COOL 1

1

3

2

1

3

2

LINE VOLTAGE FIELD INSTALLED

DENOTES OPTIONAL COMPONENTS

II

WIRING DIAGRAM

09/17

DUAL SPEED COMPRESSOR

ELS-072,090,120-G,J,M,Y

2011

SECTION A2

537903-01

REV. 0

FIGURE 7. Typical Wiring Diagram – ELS072S4S, ELS090S4S and ELS120S4S (G, J, M, Y Voltages)

Page 16

R

TB14

6

4

208V

400V

240 / 460 / 575V

K1-2

240 / 460 / 575V

1

B5

208V

400V

3

CB8

T1

1

2

S25

3

K2-2

S24

1

4

3

2

B4

C2

C1

TB14

C

COOL 2

COOL 1

LINE VOLTAGE FIELD INSTALLED

DENOTES OPTIONAL COMPONENTS

CIRCUIT BREAKER-TRANS T1

CB8

K10,-1
K66,-1,2

K67,-1,2

SWITCH-LOSS OF CHARGE,COMP 1

S24

SWITCH-LOSS OF CHARGE,COMP 2

S25

TRANSFORMER-CONTROL

T1

TERMINAL STRIP-CLASS II VOLTAGE

TB14

II

WIRING DIAGRAM

ELS-120,150-G,J,M,Y

SECTION A 3

2008

FIGURE 8. Typical Wiring Diagram – ELS120S4D and ELS150S4D (G, J, M, Y Voltages)

Page 17

08/17

REV. 0

537904-01

R

TB14

6

4

CB8

T1
AND

208V

400V

240 / 460 / 575V

9

6

2

9

6

CB8

5

3

S25

4

3

1

1

2

S24

T1

208V

400V

240 / 460 / 575V

3

1

2

SWITCH-LOSS OF CHARGE,COMP 1

S24
S25

SWITCH-LOSS OF CHARGE,COMP 2

T1

TRANSFORMER-CONTROL

4

3

3

1

2

TB14

TERMINAL STRIP-CLASS II VOLTAGE

1

2

C2

C1

TB14

C

COOL 2

COOL 1

DENOTES OPTIONAL COMPONENTS
LINE VOLTAGE FIELD INSTALLED

II

K10,-1
K66,-1,2
K67,-1,2

CIRCUIT BREAKER-TRANS T1

CB8

K149,-1

WIRING DIAGRAM

SINGLE SPEED COMPRESSOR

ELS-180,240-G,J,M,Y

SECTION A 4

2008

537905-01

FIGURE 9. Typical Wiring Diagram – ELS180S4D and ELS240S4D (G, J, M, Y Voltages)

Page 18

08/17

REV. 0

Refrigerant Charge

OUTDOOR
WIT
TESTIN

ELS units have a factory holding charge of 2 pounds of
HFC-410A in each circuit. Additional refrigerant will need
to be added during installation (table 2).

TABLE 2. Adding Refrigerant

Stage 1

Models

ELS072S4S 18.5 N/A 3/8 1-1/8 0.7

ELS090S4S 21.75 N/A 5/8 1-1/8 1.7

ELS120S4S 23 N/A 5/8 1-1/8 1.7

ELS120S4D 12 12 3/8 1-1/8 0.7

ELS150S4D 15 15.5 3/8 1-1/8 0.7

ELS180S4D 23.75 23.5 5/8 1-1/8 1.7

ELS240S4D 22.5 23.5 5/8 1-1/8 1.7

1

If line set length is greater than 25 feet, add this amount

for 25ft
line set

to each circuit. If line set is less than 25 feet, subtract this
amount from each circuit. Refer to Lennox Refrigerant
Piping Design and Fabrication Guidelines for more infor­mation.

NOTE - Refrigerant line sets longer than 200 feet (60 me-
ters) are not recommended. For assistance contact Len­nox Application Department.

To charge the system, use either of the following proce­dures:

CHARGE PROCEDURE – NORMAL OPERATING
PRESSURES

1 - Connect a manifold gauge set to the service valves:

A - Low pressure gauge to vapor service port.

B - High pressure gauge to liquid valve service port

2 - Operate system until pressures and temperatures

stabilize (5 minutes minimum).

3 - Use a thermometer to measure the outdoor

ambient temperature. The outdoor temperature will
determine which charging procedure to use.

1 - Apply the outdoor ambient temperature to table

4 or 5 to determine normal operating pressures.
Compare the normal operating pressures to the
pressures obtained from the connected gauges.
If discharge pressure is high, remove refrigerant
from the system. If discharge pressure is low, add
refrigerant to the system.

A - Add or remove charge in increments.

B - Allow the system to stabilize at least 5 minutes each

time refrigerant is added or removed

2 - Minor variations in these pressures may be

expected due to differences in installations.

Signicant differences could mean that the system

is not properly charged or that a problem exists with
some component in the system.

lbs

Stage 2

lbs
for 25ft
line set

Liq.

Line

Dia.

Suction

Line
Dia.

Outdoor Temp > 65ºF (18ºC)

Ounces

Adjustment

per foot of

line set

1

3 - Verify the charge, as described in the approach

method.

CARDBOARD OR
PLASTIC SHEET

COIL SHOULD BE BLOCKED ONE SIDE AT A TIME

H CARDBOARD OR PLASTIC SHEET UNTIL PROPER

G PRESSURES ARE REACHED.

FIGURE 10. Blocking Outdoor Coil

Outdoor Temp < 65ºF (18ºC)

1 - When the outdoor ambient temperature is below

65F (18C) it may be necessary to restrict the air ow

through the outdoor coil to achieve liquid pressures
in the 325-375 psig (2240-2585 kPa) range. These
higher pressures are necessary for checking the
charge. Block equal sections of the outdoor coil on
all coil sides until the liquid pressure is in the 325-

375 psig range (gure 11).

2 - Charge the unit using the approach method in the

next section.

CHARGE PROCEDURE – APPROACH METHOD

Use the following approach method along with the normal

operating pressures to conrm readings.

1 - Using the same thermometer, compare liquid

temperature at service valve to outdoor ambient
temperature.

Approach Temperature = Liquid temperature minus

ambient temperature

2 - Approach temperature should be as indicated in

table 3 for each stage. An approach temperature
greater than this value indicates an undercharge.
An approach temperature less than this value
indicates an overcharge.

A - Add or remove charge in increments.

B - Allow system to stabilize at least 5 minutes each

time refrigerant is added or removed.

3 - Do not use the approach method if system pressures

do not match pressures in table 4 except when the
outdoor ambient temperature is below 65ºF (18ºC).
The approach method is not valid for grossly over or
undercharged systems.

Page 19

TABLE 3. Approach Temperatures – Commercial Matchups

TABLE 4. Normal Operating Pressures (Liquid + 10/Suction +5 psig) (Single-Stage Units)** - Commercial Matchups

Models Approach Temperature

Outdoor Indoor Stage (ºF) (+/- 1) (ºC) (+/- 0.5)

ELS072S4S ELA072S4S 1 4 2.2
ELS090S4S ELA090S4D 1 7 3.9
ELS120S4S ELA120S4D 1 4 2.2

ELS120S4D ELA120S4D

ELS150S4D ELA150S4D

ELS180S4D ELA180S4D

ELS240S4D ELA240S4D

1 5 2.8
2 5 2.8
1 7 3.9
2 5 2.8
1 4 2.2
2 4 2.2
1 7 3.9
2 8 4.4

Temp*

65 F (18 C)

75 F (24 C)

85 F (29 C)

95 F (35 C)

105 F (41 C)

115 F (46 C)

125 F (52 C)

STD. CFM

Liquid Suction Liquid Suction Liquid Suction

-072S4S -090S4S -120S4S

245 137 240 128 243 135

283 141 294 130 285 136

327 143 338 131 332 138

377 145 385 133 378 139

426 148 435 135 434 141

484 150 489 136 491 142

540 155 545 140 548 146

2600 2725 3850

*Temperature of air entering outdoor Coil

**With indoor conditions at 80°F dry bulb and 67°F wet bulb temperatures.

TABLE 5. Normal Operating Pressures (Liquid + 10/Suction + 5 psig) (Two-Stage Units)** - Commercial Matchups

-120S4D

Temp*

65 F (18 C) 244 133 240 133

75 F (24 C) 282 136 278 135

85 F (29 C) 326 139 322 137

95 F (35 C) 373 141 372 138

105 F (41 C) 423 142 420 141

115 F (46 C) 477 144 476 143

125 F (52 C) 534 147 539 145

STD. CFM 4000

STAGE 1

Liquid Suction Liquid Suction

-120S4D

STAGE 2

-150S4D

STAGE 1

Liquid Suction Liquid Suction

254 132 254 130

291 135 289 133

337 138 336 134

381 140 382 136

432 142 433 139

487 144 489 141

543 147 550 145

4400

-150S4D

STAGE

2

-180S4D

Temp*

F ( C)*

65 F (18 C) 233 110 236 110

75 F (24 C) 274 120 276 119

85 F (29 C) 317 128 319 125

95 F (35 C) 364 134 366 131

105 F (41 C) 418 138 416 132

115 F (46 C) 475 141 468 134

125 F (52 C) 536 143 529 136

STD. CFM 5150

STAGE 1

Liquid Suction Liquid Suction

*Temperature of air entering outdoor Coil
**With indoor conditions at 80°F dry bulb and 67°F wet bulb temperatures.

NOTE – Operating pressures shown in Table 5 apply to commercial one-to-one matches.

-180S4D

STAGE 2

Page 20

-240S4D

STAGE 1

Liquid Suction Liquid Suction

236 129 236 128

275 132 275 129

321 134 322 131

370 137 368 133

420 139 425 136

477 142 478 139

539 146 534 144

6975

-240S4D

STAGE 2

TABLE 6. Approach Temperatures – Residential Matchups

Models Approach Temperature

Outdoor Indoor Stage (ºF) (+/- 1) (ºC) (+/- 0.5)

ELS120S4D

ELS120S4D (2) CH33-62D

ELS120S4D (2) CH23-068

ELS120S4D (2) CX35-60C

ELS120S4D (2) CX35-60D

(2) CBA27UHE-060 or

(2) CBA38MV-060

1 4 2.2
2 4 2.2
1 4 2.2
2 4 2.2
1 4 2.2
2 4 2.2
1 4 2.2
2 4 2.2
1 4 2.2
2 4 2.2

TABLE 7. Normal Operating Pressures – Residential Matchups

ELS120S4D + (2) CBA27UHE-060

Temp

ºF (ºC) Liquid Suction Liquid Suction Liquid Suction Liquid Suction Liquid Suction Liquid Suction
65 (18) 251 133 250 131 240 125 241 125 241 128 242 128
75 (24) 292 135 287 134 280 129 282 128 281 131 283 131
85 (29) 340 137 333 136 324 132 326 131 325 134 326 133

95 (35) 391 140 384 139 372 135 374 134 373 137 375 136
105 (41) 446 143 441 142 425 139 427 137 427 141 428 139
115 (46) 505 145 501 144 483 143 484 141 484 144 486 142
125 (52) 569 148 566 147 545 146 548 145 547 147 550 146

STD. CFM 3615 3200 3200

or (2) CBA38MV-060

STAGE 1 STAGE 2 STAGE 1 STAGE 2 STAGE 1 STAGE 2

ELS120S4D + (2) CH33-62D ELS120S4D + (2) CH23-068

Temp

ºF (ºC) Liquid Suction Liquid Suction Liquid Suction Liquid Suction

65 (18) 241 130 243 129 240 127 241 127
75 (24) 282 133 282 132 281 130 282 130
85 (29) 326 136 327 135 325 134 327 133

95 (35) 374 139 375 138 373 137 374 136
105 (41) 427 142 428 141 427 141 428 139
115 (46) 485 145 486 144 484 145 486 143
125 (52) 548 148 550 147 548 148 550 146

STD. CFM 3200 3200

ELS120S4D + (2) CX35-60C ELS120S4D + (2) CX35-60D

STAGE 1 STAGE 2 STAGE 1 STAGE 2

Page 21

System Operation

The outdoor unit and indoor blower cycle on demand from
the room thermostat. When the thermostat blower switch
is in the ON position, the indoor blower operates contin­uously.

HIGH PRESSURE SWITCHES (S4 AND S7)

These units are equipped with a manual reset high pres­sure switch (single-pole, single-throw) which is located on
the discharge line. The switch shuts off the compressor
when discharge pressure rises above the factory setting.
High Pressure (auto reset) – trip at 640 psig; reset at 512
psig.

LOSS OF CHARGE SWITCHES (S24 AND S25)

These units are equipped with a loss-of-charge switch that
is located in the liquid line. The switch is a SPST, auto-re­set switch that is normally closed. The switch opens at 40
psi and closes at 90 psi.

Maintenance

At the beginning of each cooling season, the system
should be checked as follows:

OUTDOOR UNIT

1 - Clean and inspect the condenser coil. You can ush

the coil with a water hose.

2 - The outdoor fan motor is prelubricated and sealed.

No further lubrication is necessary.

3 - Visually inspect connecting lines and coils for

evidence of oil leaks.

4 - Check wiring for loose connections.

5 - Check for correct voltage at the unit while the unit is

operating and while it is off.

6 - Check amp-draw of the outdoor fan motor.

Unit nameplate _________ Actual ____________

7 - Check amp-draw of the compressor.

Unit nameplate _________ Actual ____________

NOTE – If the owner complains of insufcient cooling,

gauge the unit and check the refrigerant charge. Refer to
section on refrigerant charging in this instruction.

INDOOR COIL

1 - If necessary, clean the coil.

2 - Check connecting lines and coils for evidence of oil

leaks.

3 - If necessary, check the condensate line and clean it.

INDOOR UNIT

1 - Clean or change lters.

2 - Adjust the blower speed for cooling. Measure the

pressure drop over the coil to determine the correct
blower CFM. Refer to the unit information service
manual for pressure drop tables and procedure.

3 - On belt drive blowers, check the belt for wear and

proper tension.

4 - Check all wiring for loose connections.

5 - Check for correct voltage at the unit (blower

operating).

6 - Check amp-draw on blower motor.

Unit nameplate _________ Actual ____________

Page 22

Start-Up and Performance Checklist

Job Name Job no. Date

Job Location City State

Installer City State

Unit Model No. Serial No. Service Technician

Nameplate Voltage

Rated Load Ampacity Compressor Amperage:

Maximum Fuse or Circuit Breaker

Electrical Connections Tight? Indoor Filter clean? Supply Voltage (Unit Off)

Indoor Blower RPM S.P. Drop Over Indoor (Dry) Outdoor Coil Entering Air Te mp.

Vapor Pressure;

Refrigerant Lines: Leak Checked? Properly Insulated? Outdoor Fan Checked?

Service Valves: Fully Opened? Caps Tight? Voltage With Compressor Operating

SEQUENCE OF OPERATION

Heating Correct? Cooling Correct?

Calibrated?

THERMOSTAT

Properly Set?

Level?

Page 23