Table of Contents
Advertisement
50HX042 (3
1
⁄
TONS)
2
Temp (F)
1225/0.09
Outdoor
Ent Air
72
67
TC
46.1
42.6
85
SHC
22.9
29.5
kW
3.72
3.67
TC
44.3
40.9
95
SHC
22.3
28.9
kW
4.08
4.03
TC
42.5
39.1
105
SHC
21.7
28.2
kW
4.48
4.43
TC
40.6
37.2
115
SHC
21.1
27.5
kW
4.93
4.87
50HX048 (4 TONS)
Temp (F)
1400/0.05
Outdoor
Ent Air
72
67
TC
54.2
49.0
85
SHC
26.9
34.3
kW
4.25
4.18
TC
51.9
46.8
95
SHC
26.2
33.5
kW
4.71
4.64
TC
49.5
44.4
105
SHC
25.4
32.7
kW
5.21
5.13
TC
46.9
41.8
115
SHC
24.7
31.7
kW
5.77
5.67
50HX060 (5 TONS)
Temp (F)
1800/0.03
Outdoor
Ent Air
72
67
TC
66.8
60.0
85
SHC
34.3
44.2
kW
5.94
5.71
TC
63.5
57.0
95
SHC
33.2
43.0
kW
6.50
6.27
TC
60.0
53.9
105
SHC
32.1
41.8
kW
7.13
6.88
TC
56.4
50.6
115
SHC
30.9
40.6
kW
7.79
7.52
LEGEND
BF
— Bypass Factor
Edb
— Entering Dry-Bulb
Ewb — Entering Wet-Bulb
kW
— Total Unit Power Input
Ldb
— Leaving Dry-Bulb
Lwb — Leaving Wet-Bulb
SHC — Sensible Heat Capacity (1000 Btuh) Net
TC
— Total Capacity (1000 Btuh) Net
*At 75 F entering dry bulb (Tennessee Valley Authority [TVA] rating conditions); all others at 80 F entering dry bulb.
NOTES:
1. Direct interpolation is permissible. Do not extrapolate.
2. The following formulas may be used:
sensible capacity (Btuh)
t ldb = t edb −
1.10 x cfm
t edb = Wet-bulb temperature corresponding to enthalpy of air leaving indoor coil (h lwb )
total capacity (Btuh)
h lwb = h ewb −
4.5 x cfm
Where: h ewb = Enthalpy of air entering indoor coil
3. The SHC is based on 80 F edb temperature of air entering indoor coil.
Below 80 F edb, subtract (corr factor x cfm) from SHC.
Above 80 F edb, add (corr factor x cfm) to SHC.
Correction Factor = 1.10 x (1 − BF) x (edb − 80).
COOLING CAPACITIES (cont)
Indoor Air — Cfm/BF
1400/0.10
Indoor Air — Ewb (F)
63*
62
72
67
39.7
38.9
46.6
43.2
28.8
35.7
23.7
31.2
3.64
3.63
3.80
3.75
37.9
37.3
44.8
41.5
28.1
34.8
23.1
30.6
4.00
3.98
4.16
4.11
36.2
35.6
43.0
39.6
27.3
33.9
22.5
29.9
4.39
4.37
4.56
4.50
34.3
33.8
41.0
37.7
26.5
32.9
21.9
29.3
4.82
4.80
5.01
4.95
Indoor Air — Cfm/BF
1600/0.05
Indoor Air — Ewb (F)
63*
62
72
67
45.4
44.1
55.1
49.8
33.3
41.4
28.3
36.6
4.14
4.13
4.31
4.24
43.1
41.9
52.8
47.5
32.4
40.3
27.6
35.8
4.60
4.58
4.78
4.70
40.8
39.7
50.2
45.1
31.4
39.2
26.8
35.0
5.09
5.07
5.27
5.19
38.4
37.6
47.6
42.4
30.4
37.6
26.0
34.0
5.60
5.59
5.84
5.74
Indoor Air — Cfm/BF
2000/0.04
Indoor Air — Ewb (F)
63*
62
72
67
55.7
54.1
67.5
60.7
42.6
53.3
35.8
46.7
5.56
5.53
6.04
5.80
52.8
51.6
64.1
57.5
41.5
51.6
34.7
45.5
6.10
6.08
6.60
6.35
49.9
49.3
60.5
54.2
40.3
49.3
33.5
44.2
6.70
6.70
7.22
6.96
46.9
47.1
57.0
51.0
39.2
47.0
32.4
43.0
7.33
7.37
7.89
7.62
1575/0.11
63*
62
72
67
40.4
39.8
47.4
43.7
30.6
38.0
24.8
32.7
3.72
3.71
3.88
3.82
38.6
38.1
45.5
41.9
29.8
37.0
24.2
32.3
4.08
4.06
4.24
4.19
36.7
36.4
43.1
40.0
29.0
35.9
23.2
31.5
4.47
4.46
4.63
4.58
34.8
34.7
41.2
38.0
28.2
34.6
22.7
30.9
4.90
4.89
5.08
5.02
1800/0.06
63*
62
72
67
46.2
45.1
55.8
50.5
35.5
44.2
29.7
38.8
4.20
4.19
4.38
4.31
43.8
43.1
53.2
48.1
34.6
43.0
28.9
38.1
4.66
4.64
4.83
4.77
41.4
41.1
50.8
45.6
33.6
41.1
28.1
37.3
5.15
5.15
5.34
5.26
38.9
39.1
48.0
42.8
32.6
39.1
27.3
36.2
5.67
5.68
5.90
5.80
2250/0.04
63*
62
72
67
56.3
55.4
68.2
61.2
45.0
55.4
37.7
49.7
5.65
5.64
6.14
5.91
53.4
53.1
64.6
58.0
43.8
53.1
36.5
48.4
6.19
6.20
6.70
6.46
50.3
50.7
61.0
54.6
42.5
50.7
35.3
47.2
6.79
6.83
7.33
7.07
47.3
48.2
57.3
51.3
41.3
48.2
34.2
46.0
7.42
7.50
8.00
7.72
63*
62
40.9
40.5
32.2
39.9
3.79
3.79
39.1
38.8
31.4
38.7
4.15
4.15
37.2
37.3
30.5
37.3
4.54
4.55
35.2
35.7
29.8
35.6
4.98
4.99
63*
62
46.8
46.2
37.7
46.1
4.26
4.26
44.3
44.4
36.7
44.4
4.72
4.71
41.8
42.4
35.7
42.4
5.22
5.23
39.3
40.3
34.6
40.3
5.74
5.77
63*
62
56.8
57.1
47.8
57.1
5.75
5.78
53.8
54.6
46.5
54.6
6.29
6.34
50.7
52.1
45.3
52.1
6.89
6.97
47.6
49.5
44.0
49.5
7.53
7.64
13
Hide quick links:
Advertisement
Table of Contents
