Table 39 — Motor Limitations

HIGH-EFFICIENCY MOTORS

 

Nominal

 

Maximum

 

Maximum Amps

 

Maximum

Maximum

Bhp

 

BkW

Bhp

 

BkW

230 v

460 v

575 v

Watts

Efficiency

5

 

3.73

5.9

 

4.40

15.0

7.9

6.0

5,030

87.5

7.5

 

5.6

8.7

 

6.49

23.5

7,717

84.1

 

9.5

 

7.09

12.0

10.0

8,008

88.5

 

 

 

 

10

 

7.46

10.2

 

7.61

31.0

9,502

89.5

 

11.8

 

8.80

15.0

12.0

9,836

89.5

 

 

 

 

15

 

11.19

15.3

 

11.41

46.0

12,543

91.0

 

18.0

 

13.43

22.0

19.0

14,756

91.0

 

 

 

 

20

 

14.92

22.4

 

16.71

60.0

18,363

91.0

 

23.4

 

17.46

28.7

23.0

19,183

91.0

 

 

 

 

25

 

18.65

28.9

 

21.56

73.0

23,511

91.7

 

29.4

 

21.93

37.4

28.4

23,918

91.7

 

 

 

 

30

 

22.38

35.6

 

26.56

91.0

28,742

92.4

 

34.7

 

25.89

43.8

36.3

28,015

92.4

 

 

 

 

40

 

29.84

42.0

 

31.33

110.0

55.0

43.8

33,690

93.0

 

 

 

 

 

 

 

 

 

 

 

PREMIUM-EFFICIENCY MOTORS

 

Nominal

 

Maximum

Maximum Amps

Maximum

Maximum

Bhp

 

BkW

Bhp

 

BkW

230 v

460 v

Watts

Efficiency

5

 

3.73

5.9

 

4.40

15.8

7.9

4,918

89.5

7.5

 

5.6

8.7

 

6.49

23.5

7,078

91.7

 

9.5

 

7.09

12.0

7,728

91.7

 

 

 

 

10

 

7.46

10.2

 

7.61

30.0

8,298

91.0

 

11.8

 

8.80

15.0

9,600

91.7

 

 

 

 

15

 

11.19

15.3

 

11.41

46.0

12,273

91.7

 

18.0

 

13.43

22.0

14,439

93.0

 

 

 

 

20

 

14.92

22.4

 

16.71

59.0

17,853

93.0

 

23.4

 

17.46

28.7

18,650

93.6

 

 

 

 

25

 

18.65

28.9

 

21.56

73.0

23,034

93.6

 

29.4

 

21.93

36.3

23,432

93.6

 

 

 

 

30

 

22.38

35.6

 

26.56

82.6

28,374

93.6

 

34.7

 

25.89

41.7

27,656

93.6

 

 

 

 

40

 

29.84

42.0

 

31.33

110.0

55.0

33,156

94.5

LEGEND

Bhp — Brake Horsepower

BkW — Brake Kilowatts

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 the fan motors up to the horsepower ratings shown in the Motor Lim- itations table will not result in nuisance tripping or premature motor fail- ures. Unit warranty will not be affected.

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

Table 40A — Air Quantity Limits (48AJ,AK,AW,AY,A2,A3,A4,A5)

 

MINIMUM HEATING

MINIMUM HEATING

MINIMUM COOLING

MINIMUM COOLING

MAXIMUM AIRFLOW

UNIT SIZE*

AIRFLOW CFM

AIRFLOW CFM

AIRFLOW (VAV) CFM

AIRFLOW CFM

CFM

 

(Low Heat)

(High Heat)

AT FULL LOAD

(CV)

 

 

020

5,900

6,100

4,000

6,000

10,000

025

5,900

6,100

5,000

7,500

12,500

027

5,900

6,100

5,400

8,100

13,500

030

5,900

6,100

6,000

9,000

15,000

035 (AJ,AK,AW,AY)

5,900

6,100

7,000

10,500

17,500

035 (A2,A3,A4,A5)

5,900

10,100

7,000

10,500

17,500

036,040,041

7,600

10,100

8,000

12,000

20,000

050

7,600

10,100

10,000

15,000

22,500

051,060

11,000

10,100

12,000

18,000

27,000

 

LEGEND

CV

Constant Volume

VAV

Variable Air Volume

* Sizes 036,041, and 051 are 48AJ,AK,AW,AY only.

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 also limited by edb (entering dry bulb) and ewb (entering wet bulb) conditions.

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Carrier 48/50AJ specifications Motor Limitations, Air Quantity Limits 48AJ,AK,AW,AY,A2,A3,A4,A5