Performance Data - Bryant 579F User Manual

Durapac and durapac plus series commercial single package rooftop units gas heating/electric cooling units
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581A210 (18 Tons)
Temp (F)
Air Ent
Cond
54
58
62
TC
202
206
211
60
SHC
202
193
184
kW
10.2
10.3
10.4
TC
197
202
206
SHC
197
189
181
70
kW
11.4
11.5
11.5
TC
195
199
203
75
SHC
195
187
180
kW
12.1
12.2
12.2
TC
190
193
196
85
SHC
190
183
177
kW
13.5
13.5
13.6
TC
184
187
190
95
SHC
184
179
173
kW
15
15
15.1
TC
178
180
182
SHC
178
173
169
105
kW
16.6
16.7
16.7
TC
171
172
174
SHC
171
168
165
115
kW
18.4
18.4
18.4
TC
164
165
165
125
SHC
164
162
160
kW
20.2
20.3
20.3
581A210 (18 Tons) (cont)
Temp (F)
Air Ent
Cond
54
58
TC
227
227
60
SHC
227
226
kW
10.5
10.6
TC
222
222
70
SHC
222
221
kW
11.8
11.8
TC
219
219
75
SHC
219
218
kW
12.5
12.5
TC
213
213
85
SHC
213
213
kW
13.8
13.8
TC
206
206
SHC
206
206
95
kW
15.4
15.4
TC
199
199
SHC
199
199
105
kW
17
17.1
TC
191
191
115
SHC
191
191
kW
18.8
18.8
TC
182
182
125
SHC
182
182
kW
20.7
20.7
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 ldb = t edb –
1.10 x cfm
t lwb = Wet-bulb temperature corresponding to enthalpy of air leaving evapo-
rator coil (h lwb )
total capacity (Btuh)
h lwb = h ewb –
4.5 x cfm
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.
PERFORMANCE DATA (cont)
COOLING CAPACITIES — STANDARD UNITS (cont)
5400/0.05
67
72
76
80
54
229
248
263
279
212
155
124
99.3
74.7
212
10.6
10.8
11
11.2
10.4
223
242
256
272
207
152
122
97
72.5
207
11.8
12
12.2
12.5
11.6
219
238
253
268
204
150
120
95.8
71.3
204
12.5
12.7
13
13.2
12.3
213
231
246
260
199
148
118
93.4
68.8
199
13.8
14.1
14.4
14.6
13.6
205
222
236
250
193
144
114
90.2
65.9
193
15.4
15.7
15.9
16.2
15.1
197
213
228
240
186
141
111
87.3
62.9
186
17
17.3
17.7
17.9
16.8
188
203
217
228
179
137
107
83.6
59.6
179
18.8
19.1
19.4
19.7
18.6
178
192
205
216
171
134
104
79.8
56.1
171
20.6
21
21.3
21.6
20.4
8100/0.08
62
67
72
228
243
262
224
187
144
10.6
10.7
11
222
236
255
221
185
142
11.8
12
12.2
219
232
251
218
183
140
12.5
12.7
12.9
213
225
243
213
180
138
13.8
14.1
14.3
206
217
234
206
177
134
15.4
15.6
15.9
199
208
224
199
173
131
17.1
17.3
17.6
191
198
213
191
169
127
18.8
19
19.3
182
188
201
182
165
123
20.7
20.9
21.2
Evap Air — Cfm/BF
6300/0.06
Evap Air — Ewb (F)
58
62
67
72
76
215
218
235
254
269
205
199
166
131
103
10.4
10.4
10.7
10.9
11.1
209
212
228
247
262
202
196
163
129
101
11.6
11.6
11.9
12.1
12.3
206
209
225
244
258
199
195
162
127
99.3
12.3
12.3
12.6
12.8
13
201
202
218
236
251
195
191
159
125
96.9
13.7
13.7
13.9
14.2
14.5
194
195
210
227
241
190
187
156
121
93.7
15.2
15.2
15.5
15.8
16
187
188
201
217
232
184
183
152
118
90.8
16.8
16.8
17.1
17.4
17.8
179
179
192
207
221
178
178
149
114
87.1
18.6
18.6
18.9
19.2
19.5
171
171
182
196
208
171
171
145
110
83.2
20.4
20.4
20.8
21.1
21.4
Evap Air — Cfm/BF
Evap Air — Ewb (F)
76
80
54
58
277
293
233
233
109
75.1
233
233
11.2
11.4
10.6
10.6
271
284
228
228
107
72.8
228
228
12.5
12.7
11.9
11.9
266
280
225
224
106
71.6
225
224
13.2
13.4
12.6
12.5
258
271
218
218
103
69.1
218
218
14.6
14.8
13.9
13.9
248
260
211
211
100
66.3
211
211
16.1
16.4
15.5
15.5
238
249
203
203
97.2
63.2
203
203
17.9
18.1
17.2
17.2
226
237
195
195
93.5
60
195
195
19.7
19.9
18.9
18.9
213
224
186
186
89.6
56.5
186
186
21.6
21.9
20.9
20.9
BYPASS
FACTOR
(BF)
.05
.10
.20
.30
Interpolation is permissible.
Correction Factor = 1.10 x (1 – BF) x (edb – 80).
4. Use chart below for bypass factor.
CFM
54
5400
0.424
6300
0.478
7200
0.525
8100
0.562
9000
0.594
241
7200/0.07
80
54
58
62
67
285
220
221
223
239
74.9
220
216
213
177
11.3
10.5
10.5
10.5
10.7
277
215
216
217
233
72.7
215
212
210
174
12.6
11.7
11.7
11.7
11.9
273
212
213
214
229
71.4
212
210
208
173
13.3
12.4
12.4
12.4
12.6
264
206
207
208
222
68.9
206
205
204
170
14.7
13.7
13.8
13.8
14
254
200
200
201
214
66.1
200
199
199
167
16.3
15.3
15.3
15.3
15.5
244
193
193
193
205
63.1
193
193
193
163
18
16.9
16.9
16.9
17.2
232
185
185
185
195
59.7
185
185
185
159
19.8
18.7
18.7
18.7
19
219
177
177
177
185
56.3
177
177
177
155
21.7
20.6
20.6
20.6
20.8
9000/0.09
62
67
72
233
246
265
233
198
151
10.6
10.8
11
227
239
258
227
195
148
11.8
12
12.3
224
235
254
224
193
147
12.5
12.7
13
218
228
245
218
190
144
13.9
14.1
14.4
211
220
236
211
187
141
15.5
15.6
15.9
204
210
226
204
183
137
17.2
17.3
17.6
195
201
215
195
179
133
18.9
19.1
19.4
186
190
203
186
174
129
20.9
21
21.3
ENTERING AIR DRY-BULB TEMP (F)
79
78
77
76
75
81
82
83
84
85
Correction Factor
1.04
2.07
3.11
4.14
5.18
.98
1.96
2.94
3.92
4.90
.87
1.74
2.62
3.49
4.36
.76
1.53
2.29
3.05
3.82
ENTERING WET-BULB (F)
58
62
67
72
Bypass Factor
0.238
0.125
0.120
0.138
0.304
0.153
0.132
0.145
0.364
0.190
0.144
0.153
0.414
0.231
0.156
0.162
0.456
0.281
0.168
0.170
72
76
80
259
273
289
138
106
75
11
11.2
11.4
252
267
282
135
104
72.8
12.2
12.4
12.6
248
263
277
134
103
71.5
12.9
13.1
13.3
240
255
268
131
100
69
14.3
14.5
14.8
231
245
258
128
97.1
66.2
15.8
16.1
16.3
221
235
247
124
94.1
63.2
17.5
17.8
18
210
224
235
121
90.4
59.9
19.3
19.6
19.9
199
211
222
117
86.5
56.4
21.2
21.5
21.8
76
80
280
295
113
75.1
11.3
11.5
272
287
110
72.9
12.5
12.7
268
282
109
71.7
13.2
13.4
260
273
107
69.2
14.6
14.8
250
262
103
66.4
16.2
16.4
240
251
100
63.4
17.9
18.1
228
238
96.6
60
19.7
19.9
215
225
92.6
56.6
21.6
21.9
under 75
over 85
Use formula
shown below.
76
80
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000

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