Bryant 581B Gas Heater User Manual


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PERFORMANCE DATA (cont)
FAN PERFORMANCE — VERTICAL DISCHARGE UNITS
LEGEND
*Standard low-medium static drive range is 895 to 1147 rpm. Other rpms require a
field-supplied drive.
Refer to page 262 for general Fan Performance Data notes.
NOTES:
1. Field-supplied motor required.
2. Maximum continuous bhp for the standard motor is 3.13 (for 208/230 and
460-v units) or 3.38 (for 575-v units). The maximum continuous watts is
2700 (for 208/230 and 460-v units) or 3065 (for 575-v units). Do not adjust
motor rpm such that motor maximum bhp and/or watts is exceeded at the
maximum operating cfm. See Evaporator Fan Motor Data tables for more
information.
3. Fan performance is identical for horizontal discharge applications using
Bryant horizontal adapter curb.
LEGEND
*Alternate high-static drive range is 1040 to 1315 (for 208/230 and 460-v
units). The alternate high-static drive is not available for 575-v units. Other
rpms require a field-supplied drive.
Refer to page 262 for general Fan Performance Data notes.
NOTES:
1. Field-supplied motor required.
2. Maximum continuous bhp for the optional motor is 4.26. Maximum continuous
watts for the optional motor is 3610. Do not adjust motor rpm such that motor
maximum bhp and/or watts is exceeded at the maximum operating cfm. See
Evaporator Fan Motor Data tables for more information.
3. Fan performance is identical for horizontal discharge applications using
Bryant horizontal adapter curb.
581A155 (12 TONS) WITH STANDARD MOTOR (Low Heat Units)*
Airflow
(Cfm)
Available External Static Pressure (in. wg)
0.2 0.4 0.6 0.8 1.0
Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp
3750 597 895 0.84 692 967 1.07 781 1150 1.33 858 1342 1.59 928 1527 1.85
4000 625 1014 0.98 714 1097 1.21 800 1292 1.48 876 1495 1.75 945 1689 2.03
4250 653 1141 1.13 737 1236 1.36 820 1442 1.64 895 1656 1.93 963 1859 2.22
4500 682 1274 1.29 761 1382 1.54 840 1599 1.82 914 1824 2.11 982 2037 2.42
4750 711 1415 1.48 786 1538 1.73 861 1765 2.01 934 2001 2.32 1001 2224 2.63
5000 740 1563 1.68 812 1702 1.94 884 1940 2.22 954 2188 2.53 1020 2419 2.86
5250 769 1719 1.89 839 1875 2.16 907 2125 2.45 974 2384 2.77 1039 2625 3.10
5500 799 1884 2.13 867 2060 2.41 931 2321 2.70 996 2592 3.02 1059 2841 3.36
5750 828 2058 2.38 894 2256 2.67 956 2528 2.97 1018 2810 3.29
1080 3069 3.64
6000 857 2243 2.64 923 2464 2.96 982 2748 3.26
1041 3042 3.59 1101 3308 3.94
6250 885 2438 2.93 951 2687 3.27 1008 2981 3.58 1065 3286 3.91 1122 3559 4.26
581A155 (12 TONS) WITH STANDARD MOTOR (Low Heat Units)* (cont)
Airflow
(Cfm)
Available External Static Pressure (in. wg)
1.2 1.4 1.6 1.8 2.0
Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp
3750 992 1756 2.12 1053 1988 2.40 1112 2236 2.68 1169 2497 2.97 1224 2769 3.27
4000 1009 1931 2.31 1069 2173 2.59 1126 2431 2.88 1181 2702 3.18
1234 2984 3.48
4250 1026 2114 2.51 1085 2366 2.80 1141 2634 3.10
1194 2914 3.40 1246 3206 3.72
4500 1044 2304 2.72 1102 2566 3.02 1157 2844 3.33
1209 3133 3.65 1260 3433 3.97
4750 1062 2504 2.95 1120 2775 3.26
1174 3062 3.58 1226 3360 3.91 1275 3666 4.23
5000 1081 2712 3.19
1138 2993 3.52 1191 3288 3.85 1242 3592 4.18 1291 3905 4.52
5250
1100 2931 3.44 1156 3220 3.79 1209 3523 4.13 1260 3832 4.47 1308 4148 4.82
5500
1119 3160 3.72 1175 3457 4.07 1228 3765 4.43 1278 4077 4.78 1326 4395 5.14
5750 1138 3399 4.00 1194 3702 4.37 1246 4014 4.74 1296 4328 5.11 1343 4644 5.48
6000
1158 3649 4.31 1213 3957 4.69 1265 4270 5.07 1315 4581 5.45———
6250
1179 3910 4.64 1233 4219 5.02 1284 4531 5.41——————
Bhp — Brake Horsepower
Watts — Input Watts to Motor
581A155 (12 TONS) WITH OPTIONAL MOTOR (Low Heat Units)*
Airflow
(Cfm)
Available External Static Pressure (in. wg)
0.2 0.4 0.6 0.8 1.0
Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp
3750 597 895 0.84 692 967 1.07 781 1150 1.33 858 1342 1.59 928 1527 1.85
4000 625 1014 0.98 714 1097 1.21 800 1292 1.48 876 1495 1.75 945 1689 2.03
4250 653 1141 1.13 737 1236 1.36 820 1442 1.64 895 1656 1.93 963 1859 2.22
4500 682 1274 1.29 761 1382 1.54 840 1599 1.82 914 1824 2.11 982 2037 2.42
4750 711 1415 1.48 786 1538 1.73 861 1765 2.01 934 2001 2.32 1001 2224 2.63
5000 740 1563 1.68 812 1702 1.94 884 1940 2.22 954 2188 2.53 1020 2419 2.86
5250 769 1719 1.89 839 1875 2.16 907 2125 2.45 974 2384 2.77 1039 2625 3.10
5500 799 1884 2.13 867 2060 2.41 931 2321 2.70 996 2592 3.02 1059 2841 3.36
5750 828 2058 2.38 894 2256 2.67 956 2528 2.97 1018 2810 3.29 1080 3069 3.64
6000 857 2243 2.64 923 2464 2.96 982 2748 3.26 1041 3042 3.59 1101 3308 3.94
6250 885 2438 2.93 951 2687 3.27 1008 2981 3.58 1065 3286 3.91 1122 3559 4.26
581A155 (12 TONS) WITH OPTIONAL MOTOR (Low Heat Units)* (cont)
Airflow
(Cfm)
Available External Static Pressure (in. wg)
1.2 1.4 1.6 1.8 2.0
Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp
3750 992 1756 2.12 1053 1988 2.40 1112 2236 2.68 1169 2497 2.97 1224 2769 3.27
4000 1009 1931 2.31 1069 2173 2.59 1126 2431 2.88 1181 2702 3.18 1234 2984 3.48
4250 1026 2114 2.51 1085 2366 2.80 1141 2634 3.10 1194 2914 3.40 1246 3206 3.72
4500 1044 2304 2.72 1102 2566 3.02 1157 2844 3.33 1209 3133 3.65 1260 3433 3.97
4750 1062 2504 2.95 1120 2775 3.26 1174 3062 3.58 1226 3360 3.91 1275 3666 4.23
5000 1081 2712 3.19 1138 2993 3.52 1191 3288 3.85 1242 3592 4.18
1291 3905 4.52
5250 1100 2931 3.44 1156 3220 3.79 1209 3523 4.13 1260 3832 4.47 1308 4148 4.82
5500 1119 3160 3.72 1175 3457 4.07
1228 3765 4.43 1278 4077 4.78 1326 4395 5.14
5750 1138 3399 4.00
1194 3702 4.37 1246 4014 4.74 1296 4328 5.11 1343 4644 5.48
6000 1158 3649 4.31 1213 3957 4.69 1265 4270 5.07 1315 4581 5.45———
6250
1179 3910 4.64 1233 4219 5.02 1284 4531 5.41——————
Bhp — Brake Horsepower
Watts — Input Watts to Motor
581A155-300
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