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159
PERFORMANCE DATA — 579F (cont)
COOLING CAPACITIES (cont)
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
.
Interpolation is permissible.
Correction Factor = 1.10 x (1 – BF) x (edb – 80).
579F300 (25 Tons) (cont)
Temp (F)
Air Entering
Condenser
(Edb)
Evaporator Air Quantity — Cfm
11,250
Evaporator Air — Ewb (F)/BF
54/0.61
58/0.47
62/0.30
67/0.16
72/0.17
76/0.17
80/0.00
75
TC
295
295
298
319
342
367
392
SHC
295
295
285
245
193
151
108
kW
20.3
20.3
20.4
20.9
21.2
21.5
21.9
85
TC
288
287
289
310
334
359
384
SHC
288
287
278
241
190
148
106
kW
22.5
22.4
22.4
23.1
23.7
24.4
25.3
95
TC
278
278
280
318
323
346
—
SHC
278
278
269
150
186
144
—
kW
24.6
24.6
24.7
30.0
26.0
26.7
—
105
TC
269
269
272
285
310
332
—
SHC
269
269
259
232
182
140
—
kW
27.0
27.0
27.1
27.6
28.4
29.1
—
115
TC
259
260
262
273
297
318
—
SHC
259
260
247
227
177
136
—
kW
29.7
29.6
29.8
30.2
31.1
31.8
—
117
TC
257
257
261
271
294
—
—
SHC
257
257
245
226
176
—
—
kW
30.3
30.3
30.3
30.7
31.6
—
—
120
TC
254
254
257
267
—
—
—
SHC
254
254
242
224
—
—
—
kW
31.1
31.1
31.3
31.6
—
—
—
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
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
BYPASS
FACTOR
(BF)
ENTERING AIR DRY-BULB TEMP (F)
79
78
77
76
75
under 75
81
82
83
84
85
over 85
Correction Factor
0.05
1.04
2.07
3.11
4.14
5.18
Use formula
shown below.
0.10
0.98
1.96
2.94
3.92
4.91
0.20
0.87
1.74
2.62
3.49
4.36
0.30
0.76
1.53
2.29
3.05
3.82
0.40
0.65
1.31
1.96
2.62
3.27
0.50
0.55
1.09
1.64
2.18
2.73
0.60
0.44
0.87
1.31
1.74
2.18
0.70
0.33
0.65
0.98
1.31
1.64
0TF
Q004
-0
12
579
F18
0
-300
Summary of Contents for 579F180
Page 26: ...26 BASE UNIT DIMENSIONS 580F036 072 a48 8195 580F036 151 ...
Page 27: ...27 BASE UNIT DIMENSIONS 580F073 a48 8196 580F036 151 ...
Page 28: ...28 BASE UNIT DIMENSIONS 580F090 120 150 a48 8197 580F036 151 ...
Page 29: ...29 BASE UNIT DIMENSIONS 580F091 103 121 151 a48 8198 580F036 151 ...
Page 87: ...87 BASE UNIT DIMENSIONS 581B036 072 a48 8199 581B036 150 ...
Page 89: ...89 ACCESSORY DIMENSIONS 581B036 072 a48 8201 581B036 150 ...
Page 90: ...90 ACCESSORY DIMENSIONS 581B090 150 a48 8202 581B036 150 ...
Page 135: ...135 TYPICAL WIRING SCHEMATICS 581B SIZES 036 150 581B090 460 3 60 Shown a48 8233 581B036 150 ...
Page 167: ...167 TYPICAL WIRING SCHEMATICS 579F 579F240 208 230 V Shown a48 7929 0TFQ004 012 579F180 300 ...
Page 174: ...174 BASE UNIT DIMENSIONS 580F180 210 a48 8203 0TFQ004 012 580F180 300 ...
Page 175: ...175 BASE UNIT DIMENSIONS 580F240 a48 8204 0TFQ004 012 580F180 300 ...
Page 176: ...176 BASE UNIT DIMENSIONS 580F300 a48 8205 0TFQ004 012 580F180 300 ...
Page 178: ...178 ACCESSORY DIMENSIONS 580F300 Vertical Roof Curbs 580F300 a48 7456 0TFQ004 012 580F180 300 ...
Page 202: ...202 BASE UNIT DIMENSIONS 581A210 300 a48 8206 581A155 300 ...
Page 206: ...206 ACCESSORY DIMENSIONS 581A210 300 a48 8234 581A155 300 ...