Carrier 48EW, 48EY024-068, 48AW, 48AY020-060, 48EK, 48AK, 48AJ, 48EJ 06D537 06EA250 06EA265

Models: 48EJ 48AJ 48AK 48EK 48AY020-060 48AW 48EY024-068 48EW

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Table 1B — Physical Data — 48EJ,EK,EW,EY Units (cont)

UNIT 48EJ,EK,EW,EY

 

 

034D/E

 

 

 

044D/E

 

 

 

 

048D/E

 

NOMINAL CAPACITY (tons)

 

35

 

 

 

 

40

 

 

 

 

 

 

45

 

 

 

OPERATING WEIGHT (lb)

 

 

 

 

 

 

For Operating Weights see Table 2.

 

 

 

 

 

 

 

COMPRESSOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Type Ckt 1

 

 

 

06D537

 

 

 

06EA250

 

 

 

 

06EA265

 

Ckt 2

 

 

 

06D537

 

 

 

06EA250

 

 

 

 

06EA250

 

Number of Refrigerant Circuits

 

2

 

 

 

 

2

 

 

 

 

 

 

2

 

 

 

Oil (oz) (Ckt 1, Ckt 2)

 

 

 

115 ea.

 

 

 

224 ea.

 

 

 

 

304, 224

 

 

 

REFRIGERANT TYPE

 

 

 

 

 

 

 

 

 

R-22

 

 

 

 

 

 

 

 

Operating Charge (lb-oz)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Circuit 1*

 

 

34-0

 

 

 

 

35-0

 

 

 

 

 

 

41-0

 

 

 

Circuit 2

 

 

34-0

 

 

 

 

35-0

 

 

 

 

 

 

41-0

 

 

 

CONDENSER COIL

 

 

 

Cross-Hatched 3/8Copper Tubes, Aluminum Lanced, Aluminum Pre-Coated, or Copper Plate Fins

 

Quantity

 

 

2

 

 

 

 

2

 

 

 

1

 

 

1

 

Rows...Fins/in.

 

 

4...15

 

 

 

 

4...15

 

 

 

4...15

 

 

3...15

Total Face Area (sq ft)

 

58.3

 

 

 

 

58.3

 

 

 

 

 

 

66.7

 

 

 

CONDENSER FAN

 

 

 

 

 

 

 

 

 

Propeller Type

 

 

 

 

 

 

 

 

Nominal Cfm

 

 

27,064

 

 

 

 

27,064

 

 

 

 

 

 

27,064

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Quantity...Diameter (in.)

 

4...30

 

 

 

 

4...30

 

 

 

 

 

 

4...30

 

 

 

Motor Hp (1075 Rpm)

 

1

 

 

 

 

1

 

 

 

 

 

 

1

 

 

 

EVAPORATOR COIL

 

 

 

 

 

 

Cross-Hatched

3/8Copper Tubes, Aluminum Plate Fins, Intertwined Circuits

 

 

 

 

Rows...Fins/in.

 

 

3...15

 

 

 

 

3...15

 

 

 

 

 

 

4...15

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Total Face Area (sq ft)

 

34.7

 

 

 

 

34.7

 

 

 

 

 

 

34.7

 

 

 

EVAPORATOR FAN

 

 

 

 

 

 

 

 

 

Centrifugal Type

 

 

 

 

 

 

 

 

Quantity...Size (in.)

 

 

 

2...20x15

 

 

 

2...20x15

 

 

 

 

2...20x15

 

Type Drive

 

 

 

Belt

 

 

 

Belt

 

 

 

 

Belt

 

Nominal Cfm

 

 

14,000

 

 

 

 

16,000

 

 

 

 

 

 

18,000

 

 

 

Motor Hp

 

10

 

15†

 

 

20

15

 

20†

 

 

25

20

 

 

25†

 

 

30

Motor Frame Size (Standard)

S215T

 

D254T

 

 

S256T

D254T

 

S256T

 

 

S284T

S256T

 

 

S284T

 

 

S286T

(High Efficiency)

 

S215T

 

S254T

 

 

S256T

S254T

 

S256T

 

 

S284T

S256T

 

 

S284T

 

 

S286T

Motor Bearing Type

 

 

 

Ball

 

 

 

 

 

Ball

 

 

 

 

 

 

Ball

 

 

 

Maximum Allowable Rpm

 

1200

 

 

 

 

1200

 

 

 

 

 

 

1200

 

 

 

Motor Pulley Pitch Diameter

6.1

 

5.3

 

 

5.7

5.3

 

5.7

 

 

7.5

6.3

 

 

8.1

 

 

7.5

Nominal Motor Shaft Diameter (in.)

13/8

 

15/8

 

 

15/8

15/8

 

15/8

 

 

17/8

15/8

 

 

17/8

 

 

17/8

Fan Pulley Pitch Diameter (in.)

13.7

 

9.5

 

 

9.5

9.5

 

9.5

 

 

11.1

11.1

 

 

12.5

 

 

11.1

Nominal Fan Shaft Diameter (in.)

 

 

115/16

 

 

 

 

 

115/16

 

 

 

 

 

 

115/16

 

 

 

Belt, Quantity...Type

 

1...5VX610

 

2...5VX530

 

 

2...5VX550

2...5VX530

 

2...5VX550

 

 

2...5VX590

2...5VX570

 

 

2...5VX630

 

 

2...5VX590

 

 

 

 

 

 

 

Belt, Length (in.)

 

61

 

53

 

 

55

53

 

55

 

 

59

57

 

 

63

 

 

59

Pulley Center Line Distance (in.)

15.6-18.4

 

15.0

 

-17.9

15.0

 

-17.9

 

 

14.6-17.6

15.0-17.9

 

 

14.6-17.6

Factory Speed Setting (rpm)

779

 

976

 

 

1050

976

 

1050

 

 

1182

993

 

 

1134

 

 

1182

FURNACE SECTION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Rollout Switch Cutout Temp (F)**

 

225

 

 

 

 

225

 

 

 

 

 

 

225

 

 

 

Burner Orifice Diameter

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(in. ...drill size)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Natural Gas

Std

 

.120...31

 

 

 

 

.120...31

 

 

 

 

 

 

.120...31

 

 

 

Liquid Propane

Alt

 

.096...41

 

 

 

 

.096...41

 

 

 

 

 

 

.096...41

 

 

 

Thermostat Heat Anticipator

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Setting (amps)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Stage 1

 

 

0.1

 

 

 

 

0.1

 

 

 

 

 

 

0.1

 

 

 

Stage 2

 

 

0.1

 

 

 

 

0.1

 

 

 

 

 

 

0.1

 

 

 

Gas Input (Btuh)

Stage 1 Low

 

303,500

 

 

 

 

303,500

 

 

 

 

 

 

303,500

 

 

 

 

High

 

607,000

 

 

 

 

607,000

 

 

 

 

 

 

607,000

 

 

 

 

Stage 2 Low

 

400,000

 

 

 

 

400,000

 

 

 

 

 

 

400,000

 

 

 

 

High

 

800,000

 

 

 

 

800,000

 

 

 

 

 

 

800,000

 

 

 

Efficiency (Steady State) (%)

 

82

 

 

 

 

82

 

 

 

 

 

 

82

 

 

 

Temperature Rise Range

 

10-40/30-60

 

 

 

 

10-40/30-60

 

 

 

 

 

 

10-40/30-60

 

 

 

Gas Pressure to Unit Range (in. wg)

 

5-13.5

 

 

 

 

5-13.5

 

 

 

 

 

 

5-13.5

 

 

 

Manifold Pressure (in. wg)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Natural Gas

Std

 

3.5

 

 

 

 

3.5

 

 

 

 

 

 

3.5

 

 

 

Liquid Propane

Alt

 

3.5

 

 

 

 

3.5

 

 

 

 

 

 

3.5

 

 

 

Gas Valve Quantity

 

 

2

 

 

 

 

2

 

 

 

 

 

 

2

 

 

 

Field Gas Connection Size

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(in.-FPT)

 

 

1.5

 

 

 

 

1.5

 

 

 

 

 

 

1.5

 

 

 

HIGH-PRESSURE SWITCH (psig)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Cutout

 

 

426

 

 

 

 

426

 

 

 

 

 

 

426

 

 

 

Reset (Auto.)

 

 

320

 

 

 

 

320

 

 

 

 

 

 

320

 

 

 

LOW-PRESSURE SWITCH (psig)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Cutout

 

 

7

 

 

 

 

7

 

 

 

 

 

 

7

 

 

 

Reset (Auto.)

 

 

22

 

 

 

 

22

 

 

 

 

 

 

22

 

 

 

RETURN-AIR FILTERS (W x H x T)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Quantity...Size (in.)

 

 

 

10...20 x 24 x 2

 

 

 

10...20 x 24 x 2

 

 

 

 

10...20 x 24 x 2

 

OUTDOOR-AIR FILTERS

 

 

8...16 x 25

 

 

 

8...16 x 25

 

 

 

 

8...16 x 25

 

Quantity...Size (in.)

 

 

 

4...20 x 25

 

 

 

4...20 x 25

 

 

 

 

4...20 x 25

 

POWER EXHAUST

 

 

 

Direct Drive, 3-Speed, Single-Phase Motor (Factory-Wired for High Speed) and Forward Curved Fan

 

Motor, Quantity...Hp

 

 

 

 

 

 

 

 

4...1

 

 

 

 

 

 

 

 

 

 

Fan, Diameter...Width (in.)

 

 

 

 

 

 

 

11...10

 

 

 

 

 

 

 

 

 

 

*Sizes 024-034: Circuit 1 uses the lower portion of condenser coil, Circuit 2 uses the upper portion.

Sizes 038-048: Circuit 1 uses the left condenser coil, Circuit 2 the right. All units have intertwined evaporator coils. †Motor and drive shown will deliver approximately 2.5 in. wg net external static. For more information, see Table 3. **Rollout switch is manual reset.

NOTE: High heat is for 48EJ,EW only.

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Carrier 48EW, 48EY024-068, 48AW, 48AY020-060, 48EK, 48AK, 48AJ, 48EJ specifications 06D537 06EA250 06EA265

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.