Carrier 48EJ Air Conditioner Manual and Specifications

Page 7

VFD Ð Variable Frequency Drive

NOTES:

1.Weights include economizer (STD).

2. Center of gravity.

3.Do not locate adjacent units with ¯ue discharge facing economizer inlet. Minimum clearances to be:

Adjacent Units: 15 -0

Top of Units: No overhang

Condenser Coil: 4 -0

Economizer Side: 6 -0

Gas Heat Side: 4 -0

Filter Access Side: 10 -0 (For Removal of Evaporator Coil)

4.For smaller service and operational clearances, contact Carrier Application Engineering department.

5.Dimensions are in inches.

6.For side-supply/return applications, a single return and supply ductwork connection is recommended for covering both return and both supply openings.

UNIT

OPERATING

A

B

CORNER WEIGHT (lb)

WEIGHT

SIZE

 

 

 

 

 

 

lb

ft-in.

ft-in.

1

2

3

4

 

48EW,EYD024

4176

6- 03¤8

3-63¤8

879

954

1220

1124

48EWE024

4256

6- 15¤16

3-611¤16

917

973

1218

1148

48EW,EYD028

4262

5- 95¤8

3-8

899

899

1232

1232

48EWE028

4342

5-101¤8

3-85¤16

929

916

1240

1257

48EW,EYD030

4262

5- 95¤8

3-8

899

899

1232

1232

48EWE030

4342

5-101¤8

3-85¤16

929

916

1240

1257

48EW,EYD034

4262

5- 95¤8

3-8

899

899

1232

1232

48EWE034

4342

5-101¤8

3-85¤16

929

916

1240

1257

Fig. 5 Ð Base Unit Dimensions, 48EW,EY024-034

7

Image 7
Contents Installation, Start-Up Service Instructions Instructions on Field Fabricate DuctworkDegrees and Inches Unit Leveling Tolerances DimensionsRoof Curb Sizes Unit Operating WeightSize 48EJE044 Ft-in 48EJ,EKD03848EJE038 48EJ,EKD044Base Unit Dimensions, 48EW,EY024-034 Base Unit Dimensions, 48EW,EY038-048 48EJ,EK,EW,EYD038 Unit Weight 48EJ,EK,EW,EYD02448EJ,EK,EW,EYD028 48EJ,EK,EW,EYD030 48EJ,EK,EW,EYD034Unit 48EJ,EK,EW,EY Physical Data4442/4602 4668/4828 4955/5115 Air Distribution Ð Thru-the-Bottom Combustion Fan Housing Location VAV Unit Configuration Default Cooling Default HeatingField Control Remote Start/Stop Make Electrical Connections SIO CCNLED RLA LRA Electrical DataFLA LRA MCA Mocp NEC FLA LRAFLA HacrMinimum Circuit Amps Qty044 Heating, Air ConditioningTerminal Block GND Ð GroundPEC DIP8772 CCN Connection Approved Shielded CablesManufacturer Cable Part no 2413 orWhite Make Outdoor-Air Inlet AdjustmentsColor Code Recommendations REDAdding Seal Strip to Top of Hood Sides Adding Foam Strip to Hood Side Mounting Angle With Tabs Attached to Filter Track Assembly Psychrometric Chart for Enthalpy Control Barometric Relief Damper and Power Exhaust Mounting Details Pressure Transducer Locations START-UP Pressure Control VFD VFD Supply Air Pressure Set PointSET Point Vdc Direct Digital Controls DIP Switch ConguraPotentiometer Signal Levels Building Pressure Signal LevelDIP Switch Conguration Power Exhaust Default Set PointsDIP Switch Factory Settings Airflow 19,000 16,00017,000 18,000528 572 615 656 695 733 769 805 Standard Efficiency Motors Fan Performance Ð Power ExhaustMotor Limitations ESPAir Quantity Limits Sequence of OperationUser Dened Set Points GAS HEATING, Variable AIR Volume VAV Units COM DEG. F ResetHIR Device Pressurization Smoke Purge Evacuation Fire Shutdown Smoke Control ModesStages Cooling Capacity Staging Table, CV Units With 2 CompressorsCompressor Manufacturer Lubricant LubricationTypical Gas Heating Section Evaporator Fan Service and ReplacementCondenser-Fan Adjustment Evaporator-Fan Motor ReplacementProtective Devices Belt Tension AdjustmentGas Valve Tran AHAIFC IfcbTypical Power Schematic 48EJ,EK,EW,EY024-034 208/230-3-60 Typical VAV 115-v Control Circuit Typical CV 115-v Control Circuit Typical VAV 24-v Control Circuit Typical CV 24-v Control Circuit Troubleshooting Typical Refrigerant Circuiting 48EJ,EK,EW,EY038,044 Typical Refrigerant Circuiting 48EJ,EK,EW,EY048 IGC Control Heating and Cooling Control Board LED Alarms IGC Control Board LED AlarmsSPT I/O Channel Designations Base Module Ð CVI/O Channel Designations Base Module Ð VAV Terminal no AssignmentPackaged Service Training START-UP Checklist General
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Manual 118 pages 46.64 Kb

EW, EY024-048, EK, 48EJ 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.