Bryant FF1DNA, FF1DNE manual Estimated Sound Power Level dBA

AIR DELIVERY (CFM) AT INDICATED EXTERNAL

STATIC PRESSURE AND VOLTAGE

						EXTERNAL STATIC PRESSURE—IN. WC
UNIT	BLOWER MOTOR		0.1		0.2			0.3			0.4			0.5
SIZE	SPEED	208V		230V	208V	230V	208V		230V	208V		230V	208V		230V
018	High	610		720	580	665	540		610	475		540	380		415
	Low	480		580	450	545	415		500	375		430	320		340
024	High	895		985	860	955	825		915	785		865	730		805
	Low	650		740	620	710	585		680	550		640	510		600
030	High	1160		1190	1105	1135	1050		1080	990		1020	935		960
	Low	885		1025	870	985	835		940	810		890	770		840

NOTE: Data reflects a dry coil, filter, and 11-kw electric heater installed.

AIR DELIVERY PERFORMANCE CORRECTION

COMPONENT PRESSURE DROP (IN. WC) AT INDICATED AIRFLOW

	AIR DELIVERY (CFM)	400	500	600	700	800	900	1000	1100
	1-Element	0.007	0.010	0.015	0.025	0.035	0.055	0.070	0.080
Electric	5 kw
Heaters	2-Element	0.010	0.012	0.018	0.028	0.050	0.075	0.100	0.130
	7.5 & 11 kw
Dry-to-	018	—	0.019	0.029	0.036	0.043	—	—	—
Wet	024	—	—	0.030	0.039	0.051	0.062	0.076	—
Coil	030	—	—	—	—	0.058	0.070	0.082	0.091

Subtract the above pressure drop corrections from unit airflow data when that component or condition is used. The remaining external static pressure will be available for the duct system.

ESTIMATED SOUND POWER LEVEL (dBA)

	CONDITIONS				OCTAVE BAND CENTER FREQUENCY*
UNIT		Ext Static
SIZE	CFM	Pressure	63	125	250	500	1000	2000	4000
FF1-018	600	0.25	64.7	60.7	56.7	53.7	51.7	49.7	45.7
FF1-024	800	0.25	66.0	62.0	58.0	55.0	53.0	51.0	47.0
FF1-030	1000	0.25	67.0	63.0	59.0	56.0	54.0	52.0	48.0

*Estimated sound power levels have been derived using the method described in the 1987 ASHRAE HVAC Systems & Applications Handbook, Chapter 52, p. 52.7.

OTHER ACCESSORIES

KIT NUMBER	DESCRIPTION	USED ON SIZES
KFDCC0101DCC	Cooling Control Package	All
KFBLG0106LGL*	Louvered Wall Panel with Frame	All

* 6 pack

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