Carrier 48EY024-068, 48EW, 48AW, 48AY020-060, 48EK, 48AK, 48AJ DIP Switch Factory Settings, Airflow

Page 65

Table 18 — DIP Switch Factory Settings

UNIT

1

2

3

4

5

6

7

8

48AJ,AW and 48EJ,EW

Closed

Closed

Closed

Closed

Closed

Closed

Open*

Closed

48AK,AY and 48EK,EY

Open

Closed

Closed

Closed

Closed

Closed

Open

Closed

*On 48EJ,EW,AJ,AW units equipped with staged gas option, DIP switch 7 should be closed.

Table 19 — Fan Performance, 48AJ,AK020-030 — Vertical Discharge Units

AIRFLOW

 

 

 

 

 

 

AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)

 

 

 

 

 

 

 

0.2

 

0.4

 

0.6

 

0.8

 

1.0

 

1.2

 

1.4

 

1.6

(Cfm)

 

 

 

 

 

 

 

 

 

Rpm

 

Bhp

Rpm

 

Bhp

Rpm

 

Bhp

Rpm

 

Bhp

Rpm

 

Bhp

Rpm

 

Bhp

Rpm

 

Bhp

Rpm

 

Bhp

4,000

394

 

1.06

416

 

1.17

481

 

1.53

538

 

1.91

590

 

2.30

637

 

2.71

680

 

3.12

721

 

3.55

5,000

388

 

1.26

453

 

1.61

512

 

1.99

566

 

2.39

616

 

2.80

662

 

3.23

704

 

3.66

745

 

4.11

6,000

433

 

1.80

495

 

2.18

549

 

2.58

600

 

3.00

646

 

3.43

690

 

3.87

731

 

4.32

770

 

4.79

7,000

484

 

2.49

540

 

2.91

591

 

3.33

637

 

3.76

681

 

4.21

722

 

4.66

761

 

5.13

799

 

5.61

8,000

537

 

3.34

589

 

3.79

635

 

4.23

678

 

4.69

719

 

5.15

758

 

5.62

795

 

6.10

831

 

6.59

9,000

590

 

4.35

638

 

4.83

682

 

5.31

723

 

5.78

761

 

6.26

798

 

6.75

833

 

7.24

867

 

7.75

10,000

645

 

5.53

690

 

6.05

731

 

6.56

769

 

7.05

805

 

7.55

840

 

8.06

873

 

8.57

905

 

9.09

11,000

700

 

6.90

742

 

7.46

781

 

7.99

817

 

8.51

851

 

9.04

884

 

9.56

916

 

10.09

946

 

10.62

12,000

755

 

8.46

795

 

9.05

832

 

9.61

866

 

10.17

899

 

10.71

930

 

11.26

960

 

11.81

989

 

12.36

13,000

811

 

10.23

849

 

10.85

884

 

11.44

917

 

12.02

948

 

12.59

978

 

13.16

1006

 

13.73

1034

 

14.30

14,000

868

 

12.20

904

 

12.86

937

 

13.48

968

 

14.08

998

 

14.68

1026

 

15.27

1054

 

15.86

1081

 

16.45

15,000

924

 

14.40

959

 

15.08

990

 

15.73

1020

 

16.37

1049

 

16.99

1076

 

17.61

1103

 

18.22

1128

 

18.83

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AIRFLOW

 

 

 

 

 

 

AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)

 

 

 

 

 

 

 

1.8

 

2.0

 

2.2

 

2.4

 

2.6

 

2.8

 

3.0

 

3.2

(Cfm)

 

 

 

 

 

 

 

 

 

Rpm

 

Bhp

Rpm

 

Bhp

Rpm

 

Bhp

Rpm

 

Bhp

Rpm

 

Bhp

Rpm

 

Bhp

Rpm

 

Bhp

Rpm

 

Bhp

4,000

759

 

3.97

795

 

4.40

829

 

4.84

862

 

5.29

893

 

5.73

923

 

6.18

952

 

6.64

980

 

7.09

5,000

782

 

4.56

818

 

5.02

853

 

5.49

885

 

5.96

917

 

6.43

947

 

6.91

976

 

7.39

1004

 

7.88

6,000

807

 

5.26

843

 

5.74

876

 

6.23

909

 

6.72

940

 

7.22

970

 

7.72

999

 

8.23

1028

 

8.74

7,000

835

 

6.09

869

 

6.59

902

 

7.09

934

 

7.60

965

 

8.12

994

 

8.64

1023

 

9.17

1051

 

9.70

8,000

865

 

7.09

898

 

7.60

930

 

8.12

961

 

8.64

991

 

9.17

1020

 

9.71

1049

 

10.25

1076

 

10.80

9,000

899

 

8.26

931

 

8.78

962

 

9.31

992

 

9.84

1021

 

10.39

1049

 

10.94

1076

 

11.49

1103

 

12.05

10,000

936

 

9.61

967

 

10.15

996

 

10.69

1025

 

11.24

1053

 

11.79

1080

 

12.35

1107

 

12.92

1133

 

13.49

11,000

976

 

11.16

1005

 

11.71

1033

 

12.26

1060

 

12.82

1087

 

13.39

1114

 

13.96

1139

 

14.54

1165

 

15.12

12,000

1018

 

12.91

1045

 

13.47

1072

 

14.04

1099

 

14.61

1125

 

15.19

1150

 

15.77

1175

 

16.36

1199

 

16.96

13,000

1061

 

14.87

1088

 

15.45

1114

 

16.03

1139

 

16.62

1164

 

17.21

1188

 

17.80

 

 

14,000

1107

 

17.05

1132

 

17.64

1157

 

18.23

1181

 

18.84

 

 

 

 

15,000

1153

 

19.44

1178

 

20.05

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AIRFLOW

AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)

 

 

 

 

 

 

 

 

 

 

 

 

 

3.4

 

3.6

 

3.8

 

4.0

 

 

 

 

 

 

 

 

 

 

 

 

(Cfm)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Rpm

 

Bhp

Rpm

 

Bhp

Rpm

 

Bhp

Rpm

 

Bhp

 

 

 

 

 

 

 

 

 

 

 

 

4,000

1007

 

7.55

1033

 

8.02

1058

 

8.48

1083

 

8.95

 

 

 

 

 

 

 

 

 

 

 

 

5,000

1032

 

8.37

1058

 

8.86

1084

 

9.36

1109

 

9.86

 

 

 

 

 

 

 

 

 

 

 

 

6,000

1055

 

9.25

1081

 

9.77

1107

 

10.29

1132

 

10.82

 

 

 

 

 

 

 

 

 

 

 

 

7,000

1078

 

10.23

1105

 

10.77

1131

 

11.32

1156

 

11.86

 

 

 

 

 

 

 

 

 

 

 

 

8,000

1103

 

11.35

1129

 

11.90

1155

 

12.47

1180

 

13.03

 

 

 

 

 

 

 

 

 

 

 

 

9,000

1130

 

12.62

1155

 

13.19

1180

 

13.76

 

 

 

 

 

 

 

 

 

 

 

 

 

10,000

1158

 

14.07

1183

 

14.65

 

 

 

 

 

 

 

 

 

 

 

 

 

 

11,000

1189

 

15.71

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

12,000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

13,000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

14,000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

15,000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LEGEND

Bhp — Brake Horsepower

NOTES:

1.Fan performance is based on wet coils, economizer, roof curb, cabinet losses, and clean 2-in. filters.

2.Conversion — Bhp to watts:

Watts =

Bhp x 746

Motor Efficiency

3.Variable Air Volume units will operate down to 70 cfm/ton. Per- formance at 70 cfm/ton is limited to unloaded operation and may be additionally limited by edb (entering dry bulb) and ewb (entering wet bulb) conditions.

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Contents Installation, Start-Up Service Instructions Instructions on Make Unit Duct ConnectionsRoof Curb 48AJ,AK020-030 and 48EJ,EK024-034 Units Roof Curb 48AJ,AK034-050 and 48EJ,EK038-048 Units Roof Curb 48AJ,AK060 and 48EJ,EK054-068 Units Page Base Unit Dimensions 48AJ,AK020-030 Base Unit Dimensions 48AJ,AK035-050 Base Unit Dimensions 48AJ,AK060 Base Unit Dimensions 48AW,AY020-030 Base Unit Dimensions 48AW,AY035-050 Base Unit Dimensions 48W,AY060 Base Unit Dimensions 48EJ,EK024-034 Base Unit Dimensions 48EJ,EK038-048 Base Unit Dimensions 48EJ,EK054-068 Base Unit Dimensions 48EW,EY024-034 Base Unit Dimensions 48EW,EY038-048 Base Unit Dimensions 48EW,EY054-068 AT Each Corner % AT Each Corner % 48EJ,EW,EK,EYD024 Rigging Weights 48AJ,AK,AW,AY Units48EJ,EW,EK,EYD028 48EJ,EW,EK,EYD030Unit 48AJ,AK,AW,AY Physical Data 48AJ,AK,AW,AY UnitsQuantity Rows...Fins/in Unit 48EJ,EK,EW,EY Physical Data 48EJ,EK,EW,EY Units06D537 06EA250 06EA265 Quantity...Type Ckt 1, Ckt Operating Weights Air Distribution Thru-the-Bottom Evaporator Fan Motor DataCombustion Fan Housing Location Install Flue HoodStages 48A,E Series Staged Gas ImplementationNumber of Stages Model Number Position Heat Size Htstgtyp Thermistor Designations Supply-Air Thermistor Connections Indoor Air Quality Sensor Configuration Make Electrical Connections COM CCNSIO DIPElectrical Data 48AJ,AK,AW,AY Units Unbalanced 3-Phase Supply VoltageMin Max RLA LRAQty 30.8/28.0 180.5/177.7 225/225 236.3/230.9 Range Exhaust FAN Motor Electrical Data 48EJ,EK,EW,EY UnitsFLA LRA MCA Mocp EW,EYFLA LRA MCA Mocp EW,EY 54.0 23.6 41.6 RLA FLANEC GND Ground Field Power Wiring ConnectionsEquip CCBGND IFCOFC Indoor-Fan Relay Terminal Block Carrier Comfort Network Indoor-Fan CircuitCCN IFC Pesc Color Code Recommendations CCN Connection Approved Shielded CablesSpace Temperature Averaging Wiring Make Outdoor-Air Inlet AdjustmentsAdding Seal Strip to Top of Hood Sides Adding Seal Strip to Sides of Hood Top Mounting Flange Mounting Angle With Tabs Attached to Filter Track Assembly Differential Enthalpy Control and Sensor Control Control Point Curve APPROX. DEG Psychrometric Chart for Enthalpy ControlBarometric Relief Damper and Power Exhaust Mounting Details 120.5 119.5 48EJ,EK,EW,EY058-068 Unit Size80.5 79.5 48EJ,EK,EW,EY024-054 Motormaster III Sensor Location 48EJ,EK,EW,EY054-064 Side Return Air Conversion Field ModificationsSTART-UP In. wg Pressure Control Signal VFD SET PointParameter Group Default Value Carrier Default Program Parameter ValuesMotor Standard Efficiency High Efficiency Typical Factory Wiring Optional Field Wiring Building Pressure Signal Level Setting DIP Switch ConfigurationOpen ClosedAirflow DIP Switch Factory SettingsFan Performance, 48AJ,AK020-030 Vertical Discharge Units 16,000 Fan Performance, 48AJ,AK035 Vertical Discharge Units17,000 18,00019,000 Fan Performance, 48AJ,AK040,050 Vertical Discharge Units20,000 17,000 18,000 19,000 20,000Fan Performance, 48AJ,AK060 Vertical Discharge Units 11,000 12,000 13,000 14,000 15,000 Fan Performance, 48AW,AY020-030 Horizontal Discharge Units13,000 14,000 15,000 16,000 17,000 18,000 Fan Performance, 48AW,AY035 Horizontal Discharge Units17,000 18,000 16,000 17,000 18,000 19,000 20,000 Fan Performance, 48AW,AY040,050 Horizontal Discharge Units19,000 20,000 26,000 27,000 Fan Performance, 48AW,AY060 Horizontal Discharge UnitsFan Performance, 48EJ,EK024,034 Vertical Discharge Units 19,000 20,000 Available External Static Pressure in. wg Fan Performance, 48EJ,EK038,044 Vertical Discharge UnitsRpm Bhp 000 1066 1096 1125 15,000 16,000 17,000 18,000 19,000 20,000000 1086 11.10 1114 11.61 1141 12.14 Fan Performance, 48EJ,EK048 Vertical Discharge UnitsRpm Bhp 10,000 949 13.81 970 14.54 990 15.26 Fan Performance, 48EJ,EK054-068 Vertical Discharge Units26,000 27,000 Available External Static Pressure in. wg Fan Performance, 48EW,EY054-068 Horizontal Discharge Units10,000 956 12.99 976 13.66 996 14.32 20,000 21,000 22,000 23,000 24,000 25,000 26,000 27,000ESP Airflow LOW Speed Medium Speed High SpeedAir Quality Limits Motor LimitationsSequence of Operation Software Control Link Points User Defined Set PointsPage COM Common Heat Interlock Relay WiringStage Gas System Inputs/Outputs Staged Gas System ComponentsFunction Location Input DescriptionNavigator Display Menu Structure Navigator DisplayVersion Enabled Occupied Morning Temperature Software HeatDEG. F Reset ConditionField-Supplied Smoke Detector Wiring Cooling Capacity Staging Table, CV Units with 2 Compressors Smoke Control ModesDevice Pressurization Smoke Purge Evacuation Fire Shutdown StagesService Typical Gas Heating Section Manufacturer Lubricant LubricationBelt Tension Adjustment To adjust belt tension Evaporator Fan Service and ReplacementEvaporator-Fan Motor Replacement Condenser-Fan AdjustmentCooling Charging Chart 48EJ,EK,EW,EY024-034 Gas Valve AdjustmentCooling Charging Chart 48EJ,EK,EW,EY054-068 Protective Devices Indoor Voltage Wire Voltage Wire06D-537 208/230-3-60 Following fan motors have two 20 HP 208/230-3-60Typical 48EK VAV 24-V Control Circuit Typical CV 24-V Control Circuit Typical 48EK VAV 115-V Control Circuit Typical 48EJ CV 115-V Control Circuit 101 102 Troubleshooting Typical Refrigerant Circuiting 48AJ,AK,AW,AY027,030 Typical Refrigerant Circuiting 48AJ,AK,AW,AY035 Typical Refrigerant Circuiting 48EJ,EK,EW,EY038,044 Typical Refrigerant Circuiting 48AJ,AK,AW,AY040,050 Typical Refrigerant Circuiting 48EJ,EK,EW,EY048 Typical Refrigerant Circuiting 48EJ,EK,EW,EY054 Typical Refrigerant Circuiting 48AJ,AK,AW,AY060 Typical Refrigerant Circuiting 48EJ,EK,EW,EY064 Typical Refrigerant Circuiting 48EJ,EK,EW,EY068 IGC Control Heating and Cooling Control Board LED Alarms IGC Control Board LED AlarmsO Channel Designations Base Module VAV O Channel Designations Base Module CVTerminal no Assignment IAQService Training START-UP Checklist General
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48EJ, 48AJ, 48AK, 48EK, 48AY020-060 specifications

The Carrier 48EJ, 48AW, 48EK, 48AJ, and 48EY024-068 are cutting-edge rooftop air conditioning units designed for commercial applications. These models are renowned for their reliability, energy efficiency, and innovative technologies aimed at providing optimal indoor comfort.

One of the standout features of these units is their advanced cooling and heating capabilities. They employ a multi-stage compressor system that allows for precise temperature control, accommodating various load requirements. This flexibility is particularly beneficial in commercial settings where the cooling load can fluctuate throughout the day.

Energy efficiency is paramount in today’s environmental landscape, and Carrier has ensured that these models meet stringent efficiency standards. They incorporate high-efficiency scroll compressors, which significantly reduce energy consumption while delivering powerful performance. The units are also equipped with variable speed fans that adjust airflow based on demand, further optimizing energy use.

In terms of construction, these rooftop units feature a robust design that enhances durability and longevity. The cabinet is constructed to withstand harsh weather conditions, ensuring reliable performance year-round. Additionally, the units are equipped with corrosion-resistant coatings, particularly useful in coastal environments where salt exposure can be a concern.

The Carrier 48EJ, 48AW, 48EK, 48AJ, and 48EY models utilize advanced controls and connectivity features, allowing for easy integration into building management systems. This connectivity enables remote monitoring and control, facilitating quick response to changing conditions and simplifying maintenance tasks.

Noise reduction is another key characteristic of these models. They are designed with sound-absorbing insulation and low-noise fan blades to ensure quiet operation, making them suitable for noise-sensitive environments such as schools and hospitals.

These units are also available with various options for air filtration and dehumidification. The use of high-efficiency air filters enhances indoor air quality by trapping dust, pollen, and other airborne particles. Enhanced dehumidification capabilities ensure that spaces remain comfortable even in humid conditions.

In conclusion, the Carrier 48EJ, 48AW, 48EK, 48AJ, and 48EY024-068 rooftop units are engineered to offer exceptional performance, energy efficiency, and durability. With their advanced technologies and user-friendly features, they stand out as reliable solutions for meeting diverse commercial cooling and heating needs, making them a popular choice for many businesses.