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