97
PERFORMANCE DATA (cont)
COOLING CAPACITIES, STANDARD UNITS (cont)
Standard Ratings
LEGEND
NOTES:
1. Direct interpolation is permissible. Do not extrapolate.
2. The following formulas may be used:
Where: h
ewb
= Enthalpy of air entering evaporator coil.
3. The SHC is based on 80 F edb temperature of air entering evaporator 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).
581B072 (6 TONS)
Temp (F)
Air Ent
Condenser
(Edb)
Air Entering Evaporator — Cfm/BF
1800/0.05
2100/0.06
2400/0.06
3000/0.08
Air Entering Evaporator — Ewb (F)
72
67
62
72
67
62
72
67
62
72
67
62
75
TC
86.7
80.7
74.4
88.8
82.7
76.6
90.5
84.4
78.2
92.6
86.3
81.0
SHC
43.0
53.7
63.8
45.0
57.4
68.9
47.2
61.2
73.6
51.2
67.4
80.7
kW
4.58
4.46
4.33
4.63
4.50
4.38
4.67
4.55
4.41
4.72
4.58
4.47
85
TC
84.1
78.2
72.0
86.4
80.3
74.1
88.2
81.7
75.7
90.2
84.0
78.8
SHC
42.0
52.6
62.7
44.5
56.6
68.0
46.8
60.2
72.5
50.6
67.4
78.7
kW
5.10
4.97
4.85
5.16
5.03
4.90
5.21
5.06
4.93
5.26
5.12
4.99
95
TC
81.3
75.3
69.2
83.4
77.3
71.3
85.1
78.9
72.9
87.2
80.6
76.2
SHC
41.0
51.4
61.4
43.4
55.3
66.6
45.8
59.2
71.2
50.2
65.8
76.2
kW
5.65
5.52
5.39
5.71
5.57
5.44
5.77
5.62
5.48
5.83
5.66
5.55
105
TC
77.9
72.0
66.1
80.0
73.8
68.0
81.6
75.3
69.6
83.4
77.1
73.2
SHC
39.7
50.2
60.0
42.2
54.0
65.2
44.6
57.8
69.3
49.0
64.5
73.2
kW
6.22
6.08
5.94
6.29
6.13
6.00
6.34
6.17
6.04
6.40
6.22
6.12
115
TC
74.7
68.4
61.8
75.9
70.0
64.1
77.6
71.3
66.5
78.7
73.0
70.1
SHC
38.7
48.8
58.1
40.8
52.6
63.2
43.3
56.4
66.4
46.9
63.2
70.0
kW
6.84
6.68
6.49
6.87
6.71
6.56
6.93
6.75
6.63
6.96
6.80
6.72
125
TC
70.3
63.6
57.2
71.8
65.5
59.1
72.9
66.8
61.9
74.0
68.6
66.4
SHC
37.2
47.0
55.8
39.5
51.0
59.1
41.7
55.0
61.9
45.4
61.8
66.3
kW
7.43
7.25
7.03
7.48
7.30
7.13
7.51
7.35
7.22
7.54
7.41
7.33
581B090 (7
1
/
2
TONS)
Temp (F)
Air Ent
Condenser
(Edb)
Air Entering Evaporator — Cfm/BF
2250/0.10
3000/0.11
3750/0.14
Air Entering Evaporator — Ewb (F)
72
67
62
72
67
62
72
67
62
75
TC
105.5
96.9
87.6
107.3
99.6
90.7
110.3
101.9
93.8
SHC
50.6
63.6
75.7
53.3
69.2
83.7
58.0
76.6
92.2
kW
5.15
5.07
5.04
5.16
5.11
5.06
5.20
5.13
5.07
85
TC
102.5
93.6
83.6
105.1
96.5
87.5
107.7
99.0
90.6
SHC
49.7
62.4
73.9
52.8
68.4
82.2
57.3
75.9
90.0
kW
5.86
5.79
5.73
5.89
5.82
5.77
5.93
5.86
5.78
95
TC
98.9
90.1
79.3
101.6
92.9
83.5
103.8
95.3
87.4
SHC
48.5
61.2
71.9
51.9
67.2
80.2
56.2
74.9
87.3
kW
6.65
6.58
6.49
6.69
6.61
6.53
6.72
6.64
6.57
105
TC
95.3
86.2
75.7
97.6
88.8
79.6
100.0
91.0
84.1
SHC
47.3
59.6
70.2
50.7
65.9
78.0
55.3
73.6
84.1
kW
7.51
7.44
7.31
7.55
7.48
7.36
7.59
7.50
7.41
115
TC
91.0
82.0
71.6
93.2
84.5
75.4
95.6
86.6
80.7
SHC
45.9
58.0
68.1
49.3
64.2
75.3
54.2
72.1
80.7
kW
8.43
8.33
8.20
8.46
8.37
8.27
8.52
8.42
8.34
125
TC
86.2
77.8
68.1
88.3
80.0
71.9
90.0
81.9
77.2
SHC
44.1
56.4
66.3
47.5
62.6
71.8
52.1
70.1
77.2
kW
9.38
9.29
9.14
9.43
9.34
9.24
9.47
9.38
9.32
581B102 (8
1
/
2
TONS)
Temp (F)
Air Ent
Condenser
(Edb)
Air Entering Evaporator — Cfm/BF
2550/0.11
3000/0.12
3400/0.13
4250/0.17
Air Entering Evaporator — Ewb (F)
57
62
67
72
57
62
67
57
62
67
72
57
62
67
72
57
75
TC
94.6
101.0
110.0
119.2
100.4
104.4
113.4
121.8
104.2
106.8
115.8
123.4
109.8
111.0
119.0
125.8
SHC
94.6
84.4
69.4
54.4
100.4
92.4
75.0
57.2
104.2
99.0
80.0
59.8
109.8
110.4
89.4
64.2
kW
5.72
5.76
5.76
5.82
5.74
5.76
5.80
5.86
5.74
5.76
5.82
5.88
5.76
5.78
5.84
5.90
85
TC
91.0
97.4
106.8
115.8
97.4
101.0
110.0
119.6
101.2
103.0
112.0
121.6
108.0
108.0
116.0
123.4
SHC
91.0
83.0
68.8
53.2
97.4
91.2
74.2
57.0
101.2
97.6
78.8
59.6
108.0
108.0
89.4
64.2
kW
6.46
6.5
6.52
6.58
6.50
6.52
6.54
6.60
6.50
6.52
6.54
6.64
6.54
6.54
6.60
6.64
95
TC
85.2
91.4
103.0
112.8
93.4
96.6
106.2
116.0
98.2
99.2
108.4
117.8
104.6
104.6
111.6
121.2
SHC
85.2
80.4
67.2
52.6
93.4
89.4
73.0
55.8
98.2
96.2
78.2
58.8
104.6
104.6
88.0
64.6
kW
7.24
7.28
7.36
7.42
7.30
7.32
7.38
7.44
7.34
7.36
7.4
7.46
7.36
7.36
7.42
7.50
105
TC
80.0
82.2
98.6
108.6
87.0
87.8
101.6
111.8
93.4
93.6
103.8
114.0
101.0
100.8
106.8
116.6
SHC
80.0
76.6
65.6
51.2
87.0
85.6
71.6
54.8
93.4
93.2
76.6
57.8
101.0
100.8
86.8
63.6
kW
8.08
8.12
8.26
8.32
8.16
8.16
8.28
8.36
8.20
8.20
8.3
8.38
8.28
8.28
8.30
8.40
115
TC
73.6
74.6
89.4
103.4
81.0
81.2
95.2
106.4
86.2
86.2
98.4
108.4
96.4
96.4
101.6
111.8
SHC
73.6
73.0
62.2
49.6
81.0
81.2
69.4
53.0
86.2
86.2
75.0
56.4
96.4
96.4
85.4
62.8
kW
9.00
9.00
9.16
9.28
9.08
9.08
9.22
9.30
9.14
9.14
9.26
9.34
9.22
9.22
9.30
9.38
125
TC
68.6
68.6
80.2
98.2
74.4
74.4
84.0
101.0
79.2
79.2
86.8
102.8
88.0
88.0
93.8
105.6
SHC
68.6
68.6
59.0
48.0
74.4
74.4
65.4
51.6
79.2
79.2
71.0
54.6
88.0
88.0
82.8
61.0
kW
9.98
9.98
10.14
10.32
10.06
10.06
10.18
10.36
10.14
10.14
10.22
10.38
10.24
10.24
10.28
10.42
BF
—
Bypass Factor
Edb —
Entering Dry Bulb
Ewb —
Entering Wet Bulb
kW
—
Compressor Motor Power Input
SHC —
Sensible Heat Capacity (1000 Btuh) Gross
TC
—
Total Capacity (1000 Btuh) Gross
t
ldb
=
t
edb
–
sensible capacity (Btuh)
1.10 x cfm
t
lwb
=
Wet-bulb temperature corresponding to enthalpy of
air leaving evaporator coil (h
lwb
)
h
lwb
=
h
ewb
–
total capacity (Btuh)
4.5 x cfm
5
81B0
36-
15
0
Summary of Contents for 581A
Page 30: ...30 BASE UNIT DIMENSIONS 580F036 072 a48 8195 580F036 151 ...
Page 31: ...31 BASE UNIT DIMENSIONS 580F073 a48 8196 580F036 151 ...
Page 32: ...32 BASE UNIT DIMENSIONS 580F090 120 150 a48 8197 580F036 151 ...
Page 33: ...33 BASE UNIT DIMENSIONS 580F091 103 121 151 a48 8198 580F036 151 ...
Page 91: ...91 BASE UNIT DIMENSIONS 581B036 072 a48 8199 581B036 150 ...
Page 93: ...93 ACCESSORY DIMENSIONS 581B036 072 a48 8201 581B036 150 ...
Page 94: ...94 ACCESSORY DIMENSIONS 581B090 150 a48 8202 581B036 150 ...
Page 150: ...150 BASE UNIT DIMENSIONS 581C024 060 581C024 060 ...
Page 198: ...198 TYPICAL WIRING SCHEMATICS 579F 579F240 208 230 V Shown a48 7929 ...
Page 205: ...205 BASE UNIT DIMENSIONS 580F180 210 a48 8203 580F180 300 ...
Page 206: ...206 BASE UNIT DIMENSIONS 580F240 a48 8204 ...
Page 207: ...207 BASE UNIT DIMENSIONS 580F300 a48 8205 580F180 300 ...
Page 209: ...209 ACCESSORY DIMENSIONS 580F300 Vertical Roof Curbs 580F300 a48 7456 580F180 300 ...
Page 233: ...233 BASE UNIT DIMENSIONS 581A210 300 a48 8206 581A155 180 ...
Page 237: ...237 ACCESSORY DIMENSIONS 581A210 300 a48 8234 581A155 180 ...
Page 280: ...280 TYPICAL PIPING AND WIRING 581A 581A155 Shown LEGEND NEC National Electrical Code b48 1258 ...
Page 297: ...297 ...