Bryant 558F, 551B manual Electric Resistance Heater Data, Indoor Sound Data Total Unit, 551A155-180

ARI* CAPACITY RATINGS (cont)

MULTIPLICATION FACTORS

HEATER RATING					ACTUAL HEATER VOLTAGE
VOLTAGE	200	208	230	240	380	440	460	480	550	575	600
240	0.694	0.751	0.918	1.000	—	—	—	—	—	—	—
480	—	—	—	—	0.626	0.840	0.918	1.000	—	—	—
600	—	—	—	—	—	—	—	—	0.840	0.918	1.000

NOTE: The following equation converts kW of heat energy to Btuh: kW x 3.413 = Btuh.

EXAMPLE: 26.0 kW (at 240 v) heater on 208 v

=26.0 (.751 mult factor)

=19.5 kW capacity at 208 v.

ELECTRIC RESISTANCE HEATER DATA

UNIT			HEATER kW					HEATER	% HEAT	MAXIMUM	MINIMUM				HEATER AMPS
			Unit Voltages						PER		Heating Cfm
551A								STAGES		STAGES*
	208	230	240	460	480	575	600		STAGE		Cfm	L/s	208	230	240	460	480	575	600
	14	17	19	14	15	—	—	1	100	1			39.3	43.4	45.3	17.2	17.9	—	—
155	26	31	34	30	32	—	—	2	50/50	2	3750	1770	71.3	78.9	82.3	37.3	39.0	—	—
	42	52	56	50	55	—	—	2	33/67	3			117.0	129.4	135.0	63.3	66.1	37.0	38.6
	26	31	34	30	32	—	—	2	50/50	2			71.3	78.8	82.3	37.3	39.0	—	—
180	42	52	56	50	55	—	—	2	33/67	3	3750	1770	117.0	129.4	135.0	63.3	66.1	—	—
	56	69	75	73	80	—	—	2	50/50	4			155.9	172.4	179.9	92.0	96.0	—	—

*Maximum number of stages using accessory low-ambient kit or head pressure control device and low-ambient kit.

NOTE: Heaters are rated at 208, 240, 480, and 600 v. Use multiplication factors table to determine kW at different voltages.

OUTDOOR SOUND POWER

551A	RATING	A-WEIGHT				OCTAVE BANDS
	(dB)	(dB)	63	125	250	500	1000	2000	4000	8000
155,180	88	87.6	90.8	88.7	86.4	84.3	83.5	78.4	75.6	66.8
LEGEND
dB — Sound Levels (decibels)

			INDOOR SOUND DATA (TOTAL UNIT)
UNIT		SOUND	A-WEIGHTED				SOUND POWER (dB)
		RATING dB					Octave Bands
551A			(dB)
		(60 Hz)		63	125	250	500	1000	2000	4000	8000
155		88	87.3	87.1	89.9	86.4	84.0	82.7	79.0	73.9	68.6
180		89	88.0	95.7	88.9	87.2	85.2	91.9	79.5	72.7	66.0
	LEGEND

dB — Sound Levels (decibels)

551A155-180

150