Drake Model

Compressor

LWT ºF

80

90

95

100

105

TONS

KW

EER

TONS

KW

EER

TONS

KW

EER

TONS

KW

EER

TONS

KW

EER

70S

ZB58KC

42.0

7.0

5.9

11.1

6.6

6.6

9.8

6.4

6.9

9.1

6.3

7.3

8.5

6.1

7.7

8.0

44.0

7.2

6.0

11.4

6.8

6.6

10.0

6.7

7.0

9.4

6.5

7.3

8.8

6.3

7.7

8.2

45.0

7.3

6.0

11.6

6.9

6.7

10.2

6.8

7.0

9.6

6.6

7.4

9.0

6.5

7.8

8.4

50.0

7.9

6.2

12.3

7.6

6.8

10.8

7.3

7.2

10.2

7.2

7.5

9.6

7.1

7.9

9.0

80S

ZB66KC

42.0

7.9

7.1

10.9

7.5

7.8

9.7

7.3

8.2

9.1

7.2

8.6

8.5

7.0

9.0

8.0

44.0

8.1

7.2

11.2

7.8

7.9

9.9

7.6

8.3

9.3

7.4

8.6

8.8

7.3

9.1

8.2

45.0

8.3

7.2

11.4

7.9

7.9

10.1

7.8

8.3

9.5

7.6

8.7

8.9

7.4

9.1

8.4

50.0

8.9

7.4

12.0

8.6

8.1

10.7

8.4

8.5

10.1

8.3

8.8

9.6

8.1

9.3

8.9

90S

ZB76KC

42.0

9.0

8.4

10.8

8.6

9.2

9.6

8.4

9.7

9.0

9.0

10.1

8.4

8.0

10.6

7.9

44.0

9.3

8.5

11.1

8.9

9.3

9.8

8.7

9.7

9.2

8.5

10.2

8.7

8.3

10.7

7.2

45.0

9.5

8.6

11.3

9.1

9.3

10.0

8.9

9.8

9.4

8.7

10.3

8.9

8.5

10.7

7.3

50.0

10.3

8.7

12.0

9.8

9.5

10.7

9.6

10.0

10.0

9.4

10.5

9.4

9.2

10.9

7.9

120S

ZB88KC

42.0

10.5

9.1

11.9

10.0

10.0

10.4

9.7

10.5

9.7

9.5

11.1

9.1

9.2

11.7

8.4

44.0

10.8

9.2

12.2

10.3

10.1

10.7

10.1

10.6

9.9

9.8

11.2

9.3

9.5

11.8

8.6

45.0

11.0

9.2

12.4

10.5

10.2

10.8

10.3

10.7

10.0

10.0

11.2

9.4

9.7

11.9

8.7

50.0

11.9

9.5

13.0

11.3

10.4

11.4

11.1

11.0

10.7

10.8

11.5

10.0

10.5

12.1

9.3

180S

ZB11M

42.0

13.1

11.8

10.3

12.5

13.1

9.0

11.8

13.8

8.4

11.8

14.6

7.9

11.6

15.4

7.3

44.0

13.5

11.9

10.5

12.8

13.2

9.2

12.2

13.9

8.6

12.2

14.7

8.1

11.9

15.4

7.6

45.0

13.7

11.9

10.6

13.0

13.2

9.3

12.4

14.0

8.7

12.4

14.7

8.2

12.1

15.5

7.7

50.0

14.7

12.1

11.3

14.0

13.4

10.9

13.3

14.2

9.3

13.3

14.9

8.7

13.0

15.7

8.1

250S

ZR250K

42.0

17.7

16.3

10.7

17.0

18.0

9.4

16.6

18.9

8.9

16.3

19.8

8.4

15.8

20.8

7.8

44.0

18.3

16.6

10.9

17.5

18.2

9.6

17.1

19.1

9.1

16.8

20.0

8.6

16.4

21.1

8.0

45.0

18.6

16.6

11.0

17.8

18.3

9.8

17.5

19.2

9.2

17.1

20.1

8.7

16.7

21.2

8.1

50.0

20.0

17.1

11.6

19.3

18.8

10.4

18.9

19.7

9.7

18.5

20.6

9.2

17.9

21.7

8.6

300S

ZR300K

42.0

21.0

19.4

11.0

20.2

21.3

9.8

19.8

22.8

9.2

19.4

23.4

8.6

18.8

24.6

8.0

44.0

21.8

19.6

11.3

20.8

21.6

10.0

20.4

22.6

9.4

20.0

23.6

8.8

19.5

24.8

8.2

45.0

22.1

19.7

11.4

21.2

21.7

10.1

20.7

22.7

9.5

20.3

23.7

8.9

19.8

25.0

8.5

50.0

23.9

20.8

12.0

22.9

22.2

10.7

22.3

23.4

10.0

21.9

24.3

9.5

21.4

25.6

8.8

1. Capacities on this chart are based on refrigerant 22. Low ambient or lower leaving water temperatures can require the use of a glycol solution or other fluid blends. These solutions affect unit capacities. Please consult the factory on these or other special fluids.

2. kW imput is for compressor(s) only.

3. EER = Energy Efficiency Ratio (BTU/watt-hour). Power imputs include compressor(s), condenser fan motor(s) and control power