Table 33 — Motor Limitations

STANDARD EFFICIENCY MOTORS

Nominal Bhp

 

Maximum Bhp

 

 

 

Maximum Amps

Maximum

Maximum

 

 

 

230 v

 

460 v

 

575 v

Watts

Efficiency

 

 

 

 

 

 

 

5

5.9

 

14.6

 

7.9

 

6.0

 

5,030

 

87.5

7.5

8.7

 

22.0

 

 

7,717

 

84.1

9.5

 

 

 

12.0

 

10.0

 

8,008

 

88.5

 

 

 

 

 

 

 

10

10.2

 

28.0

 

 

8,502

 

89.5

11.8

 

 

 

14.6

 

12.0

 

9,836

 

89.5

 

 

 

 

 

 

 

15

15.3

 

43.8

 

 

12,543

 

91.0

18.0

 

 

 

21.9

 

19.0

 

14,756

 

91.0

 

 

 

 

 

 

 

20

22.4

 

62.0

 

 

18,363

 

91.0

23.4

 

 

 

28.7

 

23.0

 

19,183

 

91.0

 

 

 

 

 

 

 

25

28.9

 

72.0

 

 

23,511

 

91.7

29.4

 

 

 

37.4

 

31.0

 

23,918

 

91.7

 

 

 

 

 

 

 

30

35.6

 

95.0

 

 

28,742

 

92.4

34.7

 

 

 

48.0

 

47.0

 

28,015

 

92.4

 

 

 

 

 

 

 

40

42.0

 

110.0

 

55.0

 

48.8

 

33,690

 

93.0

 

 

 

 

 

 

 

 

 

 

HIGH EFFICIENCY MOTORS

 

 

 

Nominal Bhp

 

Maximum Bhp

 

 

 

Maximum Amps

 

Maximum

 

Maximum

 

 

 

230 v

 

460 v

 

Watts

 

Efficiency

 

 

 

 

 

 

 

 

5

 

5.9

 

 

 

15.8

 

7.9

 

4,918

 

89.5

7.5

 

8.7

 

 

 

22.0

 

 

 

7,078

 

91.7

 

9.5

 

 

 

 

12.0

 

7,728

 

91.7

 

 

 

 

 

 

 

 

10

 

10.2

 

 

 

28.0

 

 

 

8,298

 

91.7

 

11.8

 

 

 

 

15.0

 

9,600

 

91.7

 

 

 

 

 

 

 

 

15

 

15.3

 

 

 

43.8

 

 

 

12,273

 

93.0

 

18.0

 

 

 

 

 

 

21.9

 

14,439

 

93.0

 

 

 

 

 

 

 

 

 

 

20

 

22.4

 

 

 

58.2

 

 

 

17,853

 

93.6

 

23.4

 

 

 

 

28.7

 

18,650

 

93.6

 

 

 

 

 

 

 

 

25

 

28.9

 

 

 

73.0

 

 

 

23,034

 

93.6

 

29.4

 

 

 

 

36.3

 

23,432

 

93.6

 

 

 

 

 

 

 

 

30

 

35.6

 

 

 

82.6

 

 

 

28,374

 

93.6

 

34.7

 

 

 

 

41.7

 

27,656

 

93.6

 

 

 

 

 

 

 

 

40

 

42.0

 

 

110.0

 

55.0

 

33,156

 

94.5

LEGEND

Bhp — Brake Horsepower

NOTES:

1.Extensive motor and electrical testing on the Carrier units has ensured that the full horsepower range of the motor can be utilized with confidence. Using your fan motors up to the

horsepower ratings shown in the Motor Limitations table will not result in nuisance tripping or premature motor failure. Unit war- ranty will not be affected.

2.All motors comply with Energy Policy Act (EPACT) Standards effective October 24, 1997.

Table 34 — Air Quality Limits

UNIT

UNIT

MINIMUM HEATING

MINIMUM HEATING

MINIMUM COOLING

MINIMUM COOLING

MAXIMUM

48AJ,AK,AW,A

48EJ,EK,EW,EY

AIRFLOW

AIRFLOW

AIRFLOW (VAV)

AIRFLOW

AIRFLOW

Y

 

(Low Heat)

(High Heat)

AT FULL LOAD OPERATION

(CV

 

020

024

5,900

6,100

4,000

6,000

10,000

025

028

5,900

6,100

5,000

7,500

12,500

027

030

5,900

6,100

5,400

8,100

13,500

030

034

5,900

6,100

6,000

9,000

15,000

035

038

7,600

10,100

7,000

10,500

17,500

040

044

7,600

10,100

8,000

12,000

20,000

048

7,600

10,100

9,000

13,500

22,500

050

7,600

10,100

10,000

15,000

22,500

054

11,000

14,700

10,000

15,000

25,000

058

11,000

14,700

11,000

16,500

27,000

060

064

11,000

14,700

12,000

18,000

27,000

068

11,000

14,700

13,000

19,500

27,000

LEGEND

CV — Constant Volume edb — Entering Dry Bulb ewb — Entering Wet Bulb VAV — Variable Air Volume

NOTE: Variable Air Volume units will operate down to 70 cfm/ton in Cooling mode. Performance at 70 cfm/ton is limited to unloaded operation and may be additionally limited to edb and ewb conditions.

79

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Carrier 48EJ, 48EW, 48EY024-068, 48AW, 48AY020-060, 48EK, 48AK, 48AJ specifications Motor Limitations, Air Quality Limits

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.