Air handler performance - quick reference – Heatcraft Refrigeration Products HCS User Manual

Page 13

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13

Table 1

Heating and Cooling Performance for Selected Coils

At 500 FPM (2.54 m/s) and 10 FPI.

See notes for coil descriptions and rating conditions.

Notes

Note 1 - Air volume in CFM and cubic meters per hour for air speed of 500 fpm or 2.54 meter per second

through a large face area 1/2" tube diameter (Type A) coil for each air handler model.

See pages 42 & 43 for range of air volumes for each model.

Note 2 - Face area of large size 1/2" diameter tube coil for each air handler in square feet and square meters.

5/8" & 1" diameter tube coils have slightly smaller face areas. See page 42 & 43 for other coils.

Note 3 - Direct expansion halocarbon air conditioning in thousands of BTUH and kilowatts. Performance is for a

1/2" tube, 4 row, 10 FPI coil with 40°F. (4.4ºC.) evaporating temperature and entering air

temperatures at 80°F. (26.7ºC.) dry bulb and 67°F. (19.4ºC.) wet bulb. See pages 14, 15, and 21 for

other coils and conditions.

Note 4 - Halocarbon refrigerant gas heat reclaim (thousands of BTUH and kilowatts). Performance is for a 1/2"

tube, 3 row, 10FPI coil with a 50°F. TD (or 27.7 degrees centigrade of temperature difference)

between entering air and condensing temperature. See page 20 for other coils and conditions.

Note 5 - Chilled water air conditioning in thousands of BTUH or kilowatts. Performance is for a 5/8" tube, 6

row, 10FPI coil with 44°F. (6.7ºC.) entering water temperature. Entering air temperatures are 80°F.

(26.7ºC.) dry bulb and 67°F. (19.4ºC.) wet bulb. The fluid pressure drop is less than 25 feet (0.76

kilogram per square centimeter) and the water velocity is less than 6 fps (1.83 meters per second).

See pages 16,17,and 22 for other coils and conditions.

Note 6 - Hot water heating performance in thousands of BTUH or kilowatts. Performance is for a 5/8" tube, 2

row, 10 FPI coil with 200°F. (93.3ºC.) entering water temperature. The entering air temperature is 0°F.

(-18°C.). The fluid pressure drop is less than 25 feet (0.76 kilogram per square centimeter) and the water

velocity is less than 6 fps (1.83 meters per second). See pages 18, 19, and 23 for more coils.

Note 7 - Steam heating performance in thousands of BTUH or kilowatts. The coils are 5/8" tube, 1 row, and 10

FPI (coils for models 65 and 75 are 1" diameter tubes). The entering air temperature is 60°F. (15.6ºC.)

and the steam pressure is 5 psig (1.38 kilogram per square centimeter). See pages 18, 19, and 23 for

other coils and conditions.

Air Handler Performance - Quick Reference

Note 1

Note 2

Note 3

Note 4

Note 5

Note 6

Note 7

air volume at

air handler

DX air

Refrigerant

Chilled water

Hot water

Steam

Unit 500 fpm 2.54 m/s

face area

conditioning

Heat reclaim

A/C

Heating

Heating

Size

CFM

cu m/h

SQ FT

sq m

MBH

KW

MBH

KW

MBH KW

MBH

KW

MBH

KW

03

1565

2659

3.13

0.29

58

17.0

50

14.7

73

21.4

177

51.9

93

27.3

06

2880

4893

5.76

0.54

110

32.2

92

27.0

136

39.9

341

99.9

179

52.4

08

3905

6635

7.81

0.73

150

44.0

124

36.3

179

52.5

452

132.4

254

74.4

10

4885

8300

9.77

0.91

190

55.7

156

45.7

229

67.1

548

160.6

317

92.9

12

6200

10534

12.40

1.15

241

70.6

198

58.0

286

83.8

684

200.4

395

115.7

14

7290

12386

14.58

1.36

284

83.2

232

68.0

328

96.1

812

237.9

465

136.2

18

8855

15045

17.71

1.65

345

101.1

282

82.6

418

122.5

1034

303.0

571

167.3

20

10025

17033

20.05

1.86

390

114.3

319

93.5

472

138.3

1162

340.5

651

190.7

26

13280

22563

26.56

2.47

520

152.4

423

124.0

616

180.5

1520

445.4

859

251.7

34

16825

28586

33.65

3.13

659

193.1

536

157.1

814

238.5

2026

593.6

1145

335.5

41

20365

34601

40.73

3.79

797

233.5

649

190.2

978

286.6

2406

705.0

1360

398.5

50

25313

43008

50.63

4.70

992

290.7

807

236.5

1196

350.4

2637

772.6

1586

464.7

65

32290

54861

64.58

6.00

1253

367.1

1029

301.5

1549

453.9

3798

1112.8

1848

541.5

75

37675

64011

75.35

7.00

1462

428.4

1200

351.7

1792

525.1

4407

1291.3

2156

631.7

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