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Performance data — 50TFQ (cont)
50TFQ012 (10 TONS)
Temp (F)
Outdoor
Entering Air
(Edb)
72
TC
127.4
75
SHC
60.0
kW
8.30
TC
124.6
85
SHC
59.2
kW
9.24
TC
121.8
95
SHC
58.4
kW
10.34
TC
116.9
105
SHC
56.6
kW
11.38
TC
112.0
115
SHC
55.0
kW
12.58
TC
106.4
125
SHC
53.2
kW
13.84
LEGEND
BF
— Bypass Factor
Edb — Entering Dry-Bulb
Ewb — Entering Wet-Bulb
kW — Compressor Motor Power Input
Ldb — Leaving Dry-Bulb
Lwb — Leaving Wet-Bulb
SHC — Sensible Heat Capacity (1000 Btuh) Gross
TC
— Total Capacity (1000 Btuh) Gross
NOTES:
1. Direct interpolation is permissible. Do not extrapolate.
2. The following formulas may be used:
sensible capacity (Btuh)
t
= t
–
ldb
edb
1.10 x cfm
50TFQ004
Return
Cfm
Air
(Standard
(F db)
Air)
Cap.
15.4
900
kW
Cap.
15.9
55
1200
kW
Cap.
16.2
1500
kW
Cap.
13.2
900
kW
Cap.
13.7
70
1200
kW
Cap.
14.0
1500
kW
Cap.
11.5
900
kW
Cap.
12.0
80
1200
kW
Cap.
12.3
1500
kW
LEGEND
Cap. — Heating Capacity (1000 Btuh) (includes indoor-fan motor heat)
db
— dry bulb
kW — Total Power Input (includes compressor motor power input,
outdoor-fan motor input, and indoor-fan motor input)
26
COOLING CAPACITIES (cont)
2800/0.11
67
62
72
120.4
110.6
134.2
76.4
91.0
66.2
8.18
7.88
8.54
116.2
106.4
131.0
74.6
89.4
65.4
9.04
8.74
9.50
112.0
102.2
126.2
73.2
87.4
63.8
10.04
9.66
10.46
107.2
97.6
122.4
71.4
85.4
63.0
11.08
10.66
11.64
102.0
92.8
116.6
69.6
83.2
61.2
12.18
11.74
12.78
96.8
87.8
110.4
67.4
80.8
59.2
13.36
12.90
13.96
INSTANTANEOUS AND INTEGRATED HEATING RATINGS
0
10
13.1
19.2
17.6
21.7
2.25
2.44
2.57
13.5
19.4
17.8
22.5
2.24
2.40
2.54
13.8
19.8
18.2
22.9
2.23
2.38
2.52
11.2
17.1
15.7
20.0
2.29
2.50
2.67
11.6
17.7
16.3
20.3
2.28
2.49
2.62
11.9
18.1
16.6
20.7
2.27
2.47
2.60
9.8
15.5
14.2
18.4
2.30
2.54
2.71
10.2
16.2
14.8
19.2
2.30
2.52
2.69
10.5
16.6
15.2
19.7
2.29
2.51
2.68
Indoor Entering Air — Cfm/BF
3750/0.16
Indoor Entering Air — Ewb (F)
67
62
72
126.2
116.2
135.6
86.0
104.4
67.8
8.34
8.04
8.60
122.0
112.4
132.4
84.8
103.6
67.4
9.24
8.98
9.54
117.4
107.4
127.8
83.4
101.0
66.0
10.18
9.90
10.52
112.4
102.8
123.6
82.0
98.4
65.0
11.28
10.90
11.68
107.0
98.0
118.0
80.2
95.2
63.6
11.42
12.00
12.84
101.2
93.6
111.6
78.4
91.4
61.4
13.62
13.22
14.02
t
= Wet-bulb temperature corresponding to enthalpy of air leav-
lwb
ing indoor coil (h
h
= h
–
lwb
ewb
Where: h
ewb
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.
Air Temperature Entering Outdoor Coil (F)
17
30
40
19.8
27.4
24.0
31.9
2.86
3.10
20.5
28.3
24.8
32.9
2.80
3.02
20.9
28.8
25.2
33.1
2.76
2.94
18.2
25.4
22.2
29.8
2.98
3.24
18.5
26.3
23.1
30.8
2.93
3.17
18.9
26.9
23.6
31.6
2.89
3.12
16.8
23.7
20.8
28.1
3.04
3.32
17.5
24.7
21.6
29.3
2.99
3.26
18.0
25.4
22.3
30.1
2.97
3.22
NOTES:
1.
indicates integrated ratings.
2. Integrated capacity is maximum (instantaneous) capacity less the
effect of frost on the outdoor coil and the heat required to defrost it.
4100/0.18
67
62
72
127.4
117.8
137.0
89.0
108.8
70.2
8.36
8.10
8.64
123.6
114.0
133.8
88.4
107.4
70.0
9.28
9.02
9.60
119.0
109.4
130.0
87.2
104.8
69.6
10.26
9.96
10.62
113.8
105.0
124.6
85.8
101.8
67.8
11.32
11.00
11.68
108.2
100.2
120.0
84.2
98.0
67.4
12.48
12.12
12.96
102.2
95.8
113.6
82.2
94.0
65.4
13.68
13.34
14.14
)
lwb
total capacity (Btuh)
4.5 x cfm
= Enthalpy of air entering evaporator coil
47
50
31.9
35.3
35.3
36.9
3.29
3.38
32.9
35.8
35.8
37.0
3.15
3.21
33.1
35.3
35.3
36.5
3.03
3.08
29.8
33.2
33.2
34.7
3.45
3.55
30.8
34.4
34.4
36.0
3.36
3.45
31.6
35.1
35.1
36.9
3.30
3.38
28.1
31.7
31.7
33.2
3.55
3.65
29.3
33.0
33.0
34.5
3.47
3.56
30.1
33.7
33.7
35.3
3.41
3.50
4700/0.21
67
62
129.0
120.6
93.4
115.6
8.38
8.20
126.0
116.4
94.2
112.8
9.36
9.08
121.2
112.6
93.4
110.2
10.36
10.08
115.6
108.4
91.4
106.2
11.38
11.16
110.0
103.8
90.2
101.8
12.56
12.30
103.8
99.0
88.0
97.2
13.76
13.54
60
36.9
41.4
41.4
3.64
37.0
40.1
40.1
3.35
36.5
38.6
38.6
3.17
34.7
40.1
40.1
3.91
36.0
40.9
40.9
3.72
36.9
40.2
40.2
3.54
33.2
38.5
38.5
4.03
34.5
40.2
40.2
3.91
35.3
39.2
39.2
3.70
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