General Notes for FAN Performance Data Tables

PERFORMANCE DATA (cont)

FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont)

581A300 (25 TONS) (High Heat Units)*
Airflow						Available External Static Pressure (in. wg)
Airflow		0.2			0.4			0.6			0.8			1.0
(Cfm)		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
6,500	775	2,600	2.99	825	2,872	3.30	871	3,130	3.60	915	3,400	3.91	959	3,692	4.25
7,000	826	3,115	3.58	875	3,408	3.92	918	3,679	4.23	959	3,954	4.55	1000	4,245	4.88
7,500	878	3,690	4.24	925	4,006	4.61	966	4,292	4.94	1005	4,575	5.26	1043	4,868	5.60
8,000	929	4,326	4.98	975	4,667	5.37	1015	4,970	5.72	1052	5,265	6.06	1088	5,564	6.40
8,500	981	5,029	5.78	1026	5,395	6.20	1064	5,717	6.58	1100	6,025	6.93	1134	6,332	7.28
9,000	1033	5,799	6.67	1076	6,191	7.12	1114	6,533	7.51	1148	6,856	7.89	1181	7,173	8.25
9,500	1085	6,640	7.64	1128	7,058	8.12	1164	7,421	8.54	1198	7,761	8.93	1229	8,091	9.31
10,000	1137	7,553	8.69	1179	8,000	9.20	1214	8,385	9.64	1247	8,741	10.05	1278	9,086	10.45
10,500	1190	8,542	9.82	1230	9,016	10.37	1265	9,424	10.84	1297	9,799	11.27	1327	10,158	11.68
11,000	1242	9,609	11.05	1282	10,111	11.63	1316	10,542	12.12	1347	10,937	12.58	1376	11,311	13.01
11,500	1294	10,756	12.37	1333	11,287	12.98	1367	11,741	13.50	—	—	—	—	—	—
12,000	1347	11,985	13.78	—	—	—	—	—	—	—	—	—	—	—	—
12,500	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

581A300 (25 TONS) (High Heat Units)* (cont)
Airflow						Available External Static Pressure (in. wg)
Airflow		1.2			1.4			1.6			1.8			2.0
(Cfm)		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
6,500	1004	4,016	4.62	1050	4,374	5.03	1098	4,769	5.48	1145	5,195	5.97	1192	5646	6.49
7,000	1041	4,559	5.24	1083	4,902	5.64	1126	5,277	6.07	1170	5,685	6.54	1214	6122	7.04
7,500	1081	5,179	5.96	1120	5,512	6.34	1159	5,872	6.75	1199	6,261	7.20	1240	6680	7.68
8,000	1124	5,875	6.76	1160	6,203	7.13	1196	6,553	7.54	1233	6,928	7.97	1270	7329	8.43
8,500	1168	6,647	7.64	1202	6,974	8.02	1235	7,318	8.42	1269	7,684	8.84	1304	8071	9.28
9,000	1214	7,495	8.62	1245	7,825	9.00	1277	8,168	9.39	1309	8,527	9.81	1341	8905	10.24
9,500	1260	8,421	9.69	1290	8,756	10.07	1320	9,100	10.47	1351	9,457	10.88	1381	9830	11.31
10,000	1308	9,425	10.84	1337	9,768	11.23	1365	10,116	11.63	1394	10,474	12.05	—	—	—
10,500	1356	10,510	12.09	1384	10,862	12.49	—	—	—	—	—	—	—	—	—
11,000	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
11,500	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
12,000	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
12,500	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

		LEGEND	Refer to this page for general Fan Performance Data notes.
Bhp	—	Brake Horsepower Input to Fan	NOTE: Maximum continuous bhp is:
Watts	—	Input Watts to Motor	Low Range: 5.75

High Range: 8.63

*Motor drive ranges:

Low Range: 805-1007

High Range: 941-1176

All other rpms require field-supplied drive.

GENERAL NOTES FOR FAN PERFORMANCE DATA TABLES

1.Static pressure losses (i.e., EconoMi$er IV) must be added to external static pressure before entering Fan Performance table.

2.Interpolation is permissible. Do not extrapolate.

3.Fan performance is based on wet coils, clean filters, and casing losses. See Accessory/FIOP Static Pressure table on pages 241 and 243.

4.Extensive motor and drive testing on these units ensures that the full horsepower and watts range of the motor can be utilized with

581A155-300

confidence. Using the fan motors up to the watts or bhp rating shown will not result in nuisance tripping or premature motor fail- ure. Unit warranty will not be affected.

5.Use of a field-supplied motor may affect wire size. Contact your Bryant representative for details.

6.Field-supplied drive requires changing belt and motor pulley to meet desired airflow. See application data or contact your local Bryant representative for details.

230

581A/B specifications

The Bryant 581A/B is a sophisticated rooftop unit designed for commercial heating and cooling applications, striking a balance between performance, efficiency, and versatility. This unit is engineered to cater to various building sizes and configurations, making it an excellent choice for businesses seeking reliable climate control solutions.

One of the standout features of the Bryant 581A/B is its high efficiency. With SEER ratings reaching up to 14.5, this unit can significantly reduce energy costs while providing optimal performance throughout its operational lifespan. The design incorporates advanced compressor technology, allowing for variable speed operation that not only enhances comfort but also promotes energy savings by adjusting to the real-time demands of the environment.

The Bryant 581A/B also integrates cutting-edge refrigerant technology. Utilizing Puron refrigerant, it adheres to current environmental standards, minimizing its impact on ozone depletion while maximizing cooling performance. This commitment to sustainability is complemented by energy-efficient components, including high-efficiency coils and fan motors, which further optimize energy consumption.

In terms of construction, the Bryant 581A/B is built to withstand the rigors of outdoor installation. The unit features a rugged cabinet design with durable, corrosion-resistant materials, ensuring long-term reliability even in challenging weather conditions. Additionally, the easily accessible components simplify maintenance, reducing downtime for businesses.

The functionality of the Bryant 581A/B extends beyond mere cooling and heating. It is equipped with advanced control systems that can be interfaced with building management systems, allowing for seamless integration and enhanced control over indoor climate. This technology provides operators with the ability to monitor and adjust settings remotely, ensuring a comfortable indoor environment while optimizing energy use.

Noise reduction is another important characteristic of the Bryant 581A/B. The unit is designed with sound-dampening features, making it suitable for applications where low noise levels are a priority, such as retail spaces or office buildings.

Overall, the Bryant 581A/B is a robust solution for businesses seeking efficient, reliable, and flexible climate control. Its combination of advanced technology, durable construction, and user-friendly features make it a leading choice in the commercial HVAC market.

Bryant 581A/B General Notes for FAN Performance Data Tables, 581A300 25 Tons High Heat Units

Models: 581A/B

PERFORMANCE DATA (cont)

FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont)

581A300 (25 TONS) (High Heat Units)*

Rpm

6,500

7,500

8,500

9,500

10,500

11,000

11,500

12,000

12,500

Rpm