Bryant 581C024--060 581B Outdoor Sound Power Total Unit, 581C Outdoor Sound Power Total Unit

581B,C

Table 13—581B Outdoor Sound Power (Total Unit)

	ARI				OCTAVE BANDS
UNIT	RATING
	(decibels)	63	125	250	500	1000	2000	4000	8000
036, 048	76	55.9	66.0	64.0	66.2	68.4	64.5	61.7	57.3
060, 072	80	59.1	68.9	68.7	71.9	74.0	68.9	65.7	59.0
LEGEND
ARI --- Air Conditioning and Refrigeration Institute

			Table 14—581C Outdoor Sound Power (Total Unit)
	ARI	A---				OCTAVEBANDS
	RATING
UNIT		WEIGHTED
	(decibels)	(db)	63	125	250	500	1000	2000	4000	8000
024---048	76	76	55.9	66.0	64.0	66.2	68.4	64.5	61.7	57.3
060	80	80	59.1	68.9	68.7	71.9	74.0	68.9	65.7	59.0

GENERAL FAN PERFORMANCE NOTES

1.Values include losses for filters, unit casing, and wet coils. See Table 11 and Fig. 38 for accessory/FIOP static pressure information.

2.Extensive motor and electrical testing on these units ensures that the full range of the motor can be utilized with confidence. Using the fan motors up to the ratings shown will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected. See Tables 8 and 9 for additional information.

3.Use of a field-supplied motor may affect wire sizing. Contact your Bryant representative to verify.

4.Interpolation is permissible. Do not extrapolate.

Table 15—Fan Performance 581C 024 — Vertical Discharge Units; Standard Motor (Belt Drive)**

AIRFLOW				EXTERNAL STATIC PRESSURE (in. wg)
	0.1		0.2		0.4		0.6		0.8			1.0
(Cfm)
	Rpm	Bhp	Rpm	Bhp	Rpm	Bhp	Rpm	Bhp	Rpm	Bhp	Rpm		Bhp
600	500	0.08	531	0.08	607	0.14	713	0.21	788	0.29	878		0.37
700	529	0.09	567	0.09	633	0.16	739	0.24	816	0.32	902		0.41
800	547	0.10	592	0.12	660	0.19	761	0.27	845	0.37	937		0.47
900	570	0.13	620	0.14	691	0.22	793	0.32	870	0.42	957		0.53
1000	599	0.15	650	0.16	717	0.26	818	0.36	894	0.47	981		0.58

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