Carrier 48EJ, 48EW, 48EY024-068, 48AW, 48AY020-060, 48EK, 48AK Base Unit Dimensions 48AJ,AK020-030

Page 7

NOTES:

 

OPERATING

 

 

CORNER WEIGHT (lbs)

1.

Weights include economizer (standard).

 

A

B

 

 

UNIT SIZE

WEIGHT*

(ft-in.)

(ft-in.)

 

 

 

 

2.

Center of Gravity.

 

(lbs)

1

2

3

4

 

 

 

3.

Do not locate adjacent units with flue discharge facing economizer

48AJ/AK (Low Heat) 020

5142

6- 03/8

3-63/16

1082

1174

1502

1384

48AJ (High Heat) 020

5222

6- 15/16

3-611/16

1126

1194

1494

1408

 

inlet.

 

Min Clearances to be:

48AJ/AK (Low Heat) 025

5228

5- 95/8

3-8

1103

1103

1511

1511

 

Adjacent Units: 15′-0″[4572].

 

 

 

 

 

 

 

 

 

48AJ (High Heat) 025

5308

5-103/32

3-85/16

1135

1120

1516

1537

 

Top of Units: No Overhang.

 

Condenser Coil: 4′-0″[1219].

48AJ/AK (Low Heat) 027

5325

5- 95/8

3-8

1123

1123

1539

1539

 

Economizer Side: 6′-0″[1829].

 

 

 

 

 

 

 

 

 

48AJ (High Heat) 027

5405

5-103/32

3-85/16

1156

1140

1544

1565

 

Heat Side: 4′-0″[1219].

 

Filter Access Side: 10′-0″[3048]. (For removal of evaporator coil.)

48AJ/AK (Low Heat) 030

5325

5- 95/8

3-8

1123

1123

1539

1539

4.

For smaller service and operational clearances contact Carrier Appli-

 

 

 

 

 

 

 

 

48AJ (High Heat) 030

5405

5-103/32

3-85/16

1156

1140

1544

1565

 

cation Engineering Department.

5.Bottom ducts designed to be attached to accessory roof curb. If unit is mounted on dunnage, it is recommended the ducts must be sup-

ported by cross braces as done on accessory roof curb.

UNIT SIZE

OPERATING

A (mm)

B (mm)

CORNER WEIGHT (kg)

6. Dimensions are in inches [mm].

WEIGHT*

1

2

3

4

 

 

(kg)

 

 

 

48AJ/AK (Low Heat) 020

2332

1839

1072

491

533

681

628

 

48AJ (High Heat) 020

2369

1862

1085

511

542

678

639

 

48AJ/AK (Low Heat) 025

2371

1768

1118

500

500

686

686

 

48AJ (High Heat) 025

2408

1781

1125

515

508

688

697

 

48AJ/AK (Low Heat) 027

2415

1768

1118

509

509

698

698

 

48AJ (High Heat) 027

2452

1781

1125

524

517

700

710

 

48AJ/AK (Low Heat) 030

2415

1768

1118

509

509

698

698

 

48AJ (High Heat) 030

2452

1781

1125

524

517

700

710

7

Fig. 5 — Base Unit Dimensions — 48AJ,AK020-030

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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 % 48EJ,EW,EK,EYD030 Rigging Weights 48AJ,AK,AW,AY UnitsAT Each Corner % 48EJ,EW,EK,EYD024 48EJ,EW,EK,EYD028Unit 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 HoodNumber of Stages Model Number Position Heat Size Htstgtyp 48A,E Series Staged Gas ImplementationStages Thermistor Designations Supply-Air Thermistor Connections Indoor Air Quality Sensor Configuration Make Electrical Connections DIP CCNCOM SIORLA LRA Unbalanced 3-Phase Supply VoltageElectrical Data 48AJ,AK,AW,AY Units Min MaxQty 30.8/28.0 180.5/177.7 225/225 236.3/230.9 MCA Mocp EW,EY Electrical Data 48EJ,EK,EW,EY UnitsRange Exhaust FAN Motor FLA LRAFLA LRA MCA Mocp EW,EY 54.0 23.6 41.6 NEC FLARLA GND Ground Field Power Wiring ConnectionsIFC CCBEquip GNDOFC CCN IFC Pesc Carrier Comfort Network Indoor-Fan CircuitIndoor-Fan Relay Terminal Block 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 80.5 79.5 48EJ,EK,EW,EY024-054 Unit Size120.5 119.5 48EJ,EK,EW,EY058-068 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 Closed DIP Switch ConfigurationSetting OpenFan Performance, 48AJ,AK020-030 Vertical Discharge Units DIP Switch Factory SettingsAirflow 18,000 Fan Performance, 48AJ,AK035 Vertical Discharge Units16,000 17,00017,000 18,000 19,000 20,000 Fan Performance, 48AJ,AK040,050 Vertical Discharge Units19,000 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 Units17,000 18,000 Fan Performance, 48AW,AY035 Horizontal Discharge Units13,000 14,000 15,000 16,000 17,000 18,000 19,000 20,000 Fan Performance, 48AW,AY040,050 Horizontal Discharge Units16,000 17,000 18,000 19,000 20,000 26,000 27,000 Fan Performance, 48AW,AY060 Horizontal Discharge UnitsFan Performance, 48EJ,EK024,034 Vertical Discharge Units 15,000 16,000 17,000 18,000 19,000 20,000 Fan Performance, 48EJ,EK038,044 Vertical Discharge Units19,000 20,000 Available External Static Pressure in. wg Rpm Bhp 000 1066 1096 1125Rpm Bhp Fan Performance, 48EJ,EK048 Vertical Discharge Units000 1086 11.10 1114 11.61 1141 12.14 10,000 949 13.81 970 14.54 990 15.26 Fan Performance, 48EJ,EK054-068 Vertical Discharge Units20,000 21,000 22,000 23,000 24,000 25,000 26,000 27,000 Fan Performance, 48EW,EY054-068 Horizontal Discharge Units26,000 27,000 Available External Static Pressure in. wg 10,000 956 12.99 976 13.66 996 14.32ESP 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 WiringInput Description Staged Gas System ComponentsStage Gas System Inputs/Outputs Function LocationNavigator Display Menu Structure Navigator DisplayCondition Occupied Morning Temperature Software HeatVersion Enabled DEG. F ResetField-Supplied Smoke Detector Wiring Stages Smoke Control ModesCooling Capacity Staging Table, CV Units with 2 Compressors Device Pressurization Smoke Purge Evacuation Fire ShutdownService Typical Gas Heating Section Manufacturer Lubricant LubricationCondenser-Fan Adjustment Evaporator Fan Service and ReplacementBelt Tension Adjustment To adjust belt tension Evaporator-Fan Motor ReplacementCooling Charging Chart 48EJ,EK,EW,EY024-034 Gas Valve AdjustmentCooling Charging Chart 48EJ,EK,EW,EY054-068 Protective Devices 20 HP 208/230-3-60 Voltage WireIndoor Voltage Wire 06D-537 208/230-3-60 Following fan motors have twoTypical 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 AlarmsIAQ O Channel Designations Base Module CVO Channel Designations Base Module VAV Terminal no AssignmentService 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.
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