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

ZB56K

44.0

6.3

5.7

10.5

6.0

6.3

9.2

5.9

6.7

8.7

5.7

7.0

8.1

5.6

7.4

7.6

45.0

6.2

5.7

10.4

6.0

6.3

9.2

5.8

6.6

8.6

5.7

7.0

8.0

5.5

7.4

7.5

50.0

6.8

5.8

11.2

6.5

6.4

9.9

6.3

6.7

9.3

6.2

7.1

8.7

6.0

7.5

8.1

55.0

7.4

5.9

12.1

7.1

6.5

10.6

6.9

6.8

10.0

6.7

7.2

9.3

6.6

7.6

8.7

60.0

7.9

5.9

12.9

7.6

6.6

11.3

7.4

6.9

10.6

7.2

7.3

9.9

7.0

7.7

9.2

65.0

8.5

6.0

13.6

8.1

6.6

12.0

7.9

7.0

11.2

7.7

7.4

10.5

7.5

7.7

9.7

80S

ZB68K

44.0

7.7

7.0

10.8

7.3

7.8

9.4

6.9

8.2

8.8

6.9

8.6

8.2

6.7

9.1

7.6

45.0

7.6

7.0

10.7

7.3

7.8

9.4

6.9

8.2

8.8

6.9

8.6

8.2

6.7

9.1

7.6

50.0

8.3

7.1

11.5

7.8

7.9

10.1

7.5

8.3

9.4

7.5

8.7

8.8

7.3

9.2

8.1

55.0

9.0

7.2

12.4

8.5

8.0

10.9

8.1

8.4

10.1

8.1

8.9

9.4

8.0

9.3

8.8

60.0

9.6

7.3

13.1

9.1

8.1

11.5

8.7

8.5

10.7

8.7

9.0

10.0

8.4

9.4

9.3

65.0

10.3

7.4

13.9

9.8

8.2

12.1

9.2

8.6

11.3

9.2

9.1

10.5

9.0

9.5

9.8

90S

ZB75K

44.0

8.8

8.3

10.8

8.3

9.2

9.4

8.1

9.6

8.8

7.9

10.2

8.2

7.7

10.7

7.6

45.0

8.7

8.3

10.7

8.3

9.2

9.3

8.1

9.6

8.7

7.8

10.1

8.1

7.6

10.7

7.5

50.0

9.5

8.4

11.5

9.0

9.3

10.0

8.8

9.8

9.4

8.5

10.3

8.7

8.3

10.8

8.1

55.0

10.2

8.5

12.3

9.7

9.4

10.7

9.5

9.9

10.0

9.2

10.4

9.3

9.0

11.0

8.7

60.0

10.9

8.6

13.0

10.4

9.5

11.3

10.1

10.0

10.5

9.8

10.6

9.8

9.6

11.1

9.1

65.0

11.7

8.8

13.7

11.1

9.7

11.9

10.8

10.2

11.1

10.5

10.7

10.3

10.2

11.2

9.6

120S

ZB92K

44.0

10.8

10.3

10.9

10.3

11.3

9.6

10.0

11.9

9.0

9.7

12.4

8.4

9.5

13.0

7.8

45.0

10.7

10.3

10.9

10.2

11.3

9.5

9.9

11.9

8.9

9.6

12.4

8.3

9.4

13.0

7.8

50.0

11.6

10.5

11.7

11.1

11.5

10.3

10.8

12.0

9.6

10.5

12.6

8.9

10.3

13.3

8.3

55.0

12.6

10.7

12.2

12.0

11.7

11.0

11.7

12.3

10.2

11.4

12.9

9.5

11.1

13.5

8.9

60.0

13.4

10.8

13.1

12.8

11.9

11.5

12.5

12.4

10.7

12.1

13.0

10.0

11.8

13.7

9.3

65.0

14.3

11.0

13.7

13.6

12.1

12.1

13.3

12.6

11.3

12.9

13.2

10.5

12.5

13.9

9.8

180S

ZB11M

44.0

12.9

12.1

9.9

13.1

13.4

8.7

12.0

14.1

8.2

11.7

14.9

7.6

11.3

15.7

7.1

45.0

12.8

12.1

9.8

13.0

13.4

8.7

11.9

14.1

8.1

11.6

14.9

7.6

11.3

15.6

7.1

50.0

13.8

12.2

10.6

13.3

13.5

9.3

12.9

14.3

8.7

12.6

15.0

8.2

12.3

15.8

7.6

55.0

14.9

12.3

11.3

14.3

13.7

10.0

13.9

14.4

9.4

13.6

15.1

8.8

13.3

16.0

8.2

60.0

16.0

12.4

12.0

15.3

13.8

10.6

14.9

14.5

9.9

14.5

15.3

9.3

14.2

16.1

8.7

65.0

17.0

12.5

12.7

16.3

13.9

11.2

15.9

14.6

10.5

15.5

15.4

9.9

15.1

16.2

9.2

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 input is for compressor(s) only.

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