York K4EU090 manual ESP Blower, Watts Unit CFM Octave Band Centerline Frequency HZ Model, Iwg, Bhp

036-21300-002-A-0905

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FIGURE 4 - SUSPENSION ACCESSORY (HORIZONTAL) - KEU180

TABLE 3: SOUND POWER RATINGS

		ESP	BLOWER						SOUND POWER (dB 10-12			WATTS)
UNIT	CFM							OCTAVE BAND CENTERLINE FREQUENCY (HZ)
MODEL															dB(A)
		IWG	RPM	BHP	63	125	250	500	1,000	2,000	4,000		8,000	SWL dB(a)	@
															10 FT.1
060	2,000	0.50	940	0.70	88	88	78	71	73	66	61		56	77	44
090	3,000	0.60	750	1.05	88	88	78	73	71	66	61		56	77	45
120	4,000	0.70	850	1.75	91	91	81	74	76	69	64		59	81	48
180	6,000	0.75	750	2.75	95	95	85	80	78	73	68		63	84	52

1. At a distance of 10 feet from the blower.

NOTE:	These values have been accessed using a model of sound propagation from a point source into the hemispheric free field. The dBA values provided are
	for reference only. Calculation of dBA values cover matters of system design and the fan manufacturer has no way of knowing the details of each sys-
	tem. This constitutes an exception to any specification or guarantee requiring a dBA value or sound data in any other form than sound power level rat-
	ings.

6 Unitary Products Group