Bryant 551A PERFORMANCE DATA cont, COOLING CAPACITIES cont, 559F180, tldb, tlwb =, hlwb =, hewb

PERFORMANCE DATA (cont)

COOLING CAPACITIES (cont)

		559F240 (20 TONS) — UNITS WITH PERFECT HUMIDITY™ OPTION
		Temp (F)									Evaporator Air Quantity — Cfm/BF
		Air Entering				6,000/0.07			7,000/0.09				8,000/0.1			9,000/0.11			10,000/0.12
		Condenser										Evaporator Air — Ewb (F)
			(Edb)
					62	67	72	62	67	72		62	67	72	62	67	72	62	67	72
				TC	—	237	261	—	249	269		—	254	274	—	252	279	230	255	283
		75		SHC	—	141	111	—	155	118		—	166	125	—	175	132	228	186	139
				kW	—	16.2	16.9	—	17.3	17.1		—	17.2	17.3	—	16.7	17.5	16.3	16.9	17.6
				TC	—	227	251	—	233	257		—	238	263	—	241	267	220	243	269
		85		SHC	—	133	103	—	145	110		—	157	117	—	166	123	220	177	129
				kW	—	17.5	18.2	—	17.8	18.3		—	18.0	18.5	—	18.6	18.7	17.4	17.7	18.3
				TC	—	215	238	—	221	246		—	224	249	207	228	254	211	231	256
		95		SHC	—	125	94	—	136	102		—	147	108	199	158	114	210	167	120
				kW	—	18.7	19.0	—	18.8	19.6		—	18.6	19.6	18.6	19.3	19.9	19.1	19.4	20.1
				TC	—	205	227	—	208	230		—	214	237	195	213	241	198	217	241
		105		SHC	—	117	86	—	128	92		—	138	99	188	147	104	198	156	110
				kW	—	20.2	20.9	—	20.0	20.3		—	20.7	21.3	19.8	19.9	21.2	19.9	20.6	20.9
				TC	—	190	211	—	195	217		—	197	219	183	203	222	186	204	227
		115		SHC	—	108	77	—	119	82		—	127	88	176	138	94	186	147	99
				kW	—	21.2	22.1	—	21.6	22.2		—	21.2	22.1	21.1	22.1	22.1	21.3	21.9	22.6
				TC	—	176	196	—	179	198		—	183	204	169	183	207	172	185	207
		125		SHC	—	97	65	—	107	70		—	116	76	165	124	81	172	133	86
				kW	—	22.8	23.4	—	22.8	22.9		—	23.0	23.7	22.5	22.8	24.1	22.7	22.9	23.9
		559F300 (25 TONS) — UNITS WITH PERFECT HUMIDITY OPTION
		Temp (F)									Evaporator Air Quantity — Cfm/BF
		Air Entering				7,000/0.05			8,000/0.06				9,000/0.07			10,000/0.08			11,250/0.09
		Condenser										Evaporator Air — Ewb (F)
			(Edb)
					62	67	72	62	67	72		62	67	72	62	67	72	62	67	72
				TC	—	287	325	—	301	332		—	300	331	272	299	336	278	304	341
		75		SHC	—	175	139	—	191	148		—	204	156	259	214	163	276	228	177
				kW	—	20.6	22.4	—	21.7	22.7		—	21.0	22.0	19.7	20.4	22.2	19.9	20.6	22.4
				TC	—	268	298	—	277	306		—	281	312	259	286	317	265	289	321
		85		SHC	—	161	123	—	173	130		—	186	138	244	197	145	262	213	157
				kW	—	21.5	22.4	—	22.0	22.7		—	22.0	22.9	21.1	22.2	23.1	21.7	22.1	23.3
				TC	—	253	286	—	261	290		—	269	296	244	271	301	250	275	307
		95		SHC	—	149	111	—	161	117		—	173	124	231	184	131	246	199	140
300-				kW	—	23.1	24.9	—	23.6	24.5		—	24.2	24.9	23.1	24.2	25.2	23.4	24.5	25.4
				TC	—	240	266	—	247	273		—	249	277	229	254	280	234	256	285
		105		SHC	—	136	97	—	148	103		—	158	111	217	169	115	231	182	122
				kW	—	25.1	26.0	—	25.6	26.6		—	25.3	26.5	25.0	25.7	26.5	25.1	25.7	26.7
	559F180	115		TC	—	222	248	—	228	253		210	232	257	213	233	263	215	239	265
				TC	—	—	—	—	—	—		—	—	—	—	—	—	—	—	—
				SHC	—	122	82	—	133	88		188	144	94	201	153	100	212	166	107
				kW	—	26.8	27.8	—	27.0	28.1		26.6	27.4	28.1	26.7	27.3	28.8	26.7	27.9	28.7
				TC	—	212	—	—	218	—		197	221	—	201	224	—	203	225	—
		121		SHC	—	113	—	—	124	—		177	134	—	190	143	—	201	156	—
				kW	—	28.2	—	—	28.5	—		27.7	28.6	—	27.9	28.9	—	28.0	28.9	—
		125		SHC	—	—	—	—	—	—		—	—	—	—	—	—	—	—	—
				kW	—	—	—	—	—	—		—	—	—	—	—	—	—	—	—

LEGEND

BF — Bypass Factor Edb — Entering Dry-BulbEwb — Entering Wet-Bulb

kW — Compressor Motor Power Input ldb — Leaving Dry-Bulb

lwb — Leaving Wet-Bulb

SHC — Sensible Heat Capacity (1000 Btuh) Gross TC — Total Capacity (1000 Btuh) Gross

NOTES:

1.Direct interpolation is permissible. Do not extrapolate.

2.The following formulas may be used:

sensible capacity (Btuh)

tldb	= tedb	–
			1.10 x cfm

3.The SHC is based on 80 F edb temperature of air entering evaporator coil. Below 80 F edb, subtract (corr factor x cfm) from SHC.

Above 80 F edb, add (corr factor x cfm) to SHC.

		ENTERING AIR DRY-BULB TEMP (F)
BYPASS FACTOR	79	78	77	76	75	under 75
(BF)	81	82	83	84	85	over 85
			Correction Factor
.05	1.04	2.07	3.11	4.14	5.18
.10	.98	1.96	2.94	3.92	4.90	Use formula
.20	.87	1.74	2.62	3.49	4.36	shown below.
.30	.76	1.53	2.29	3.05	3.82

Interpolation is permissible.

Correction Factor = 1.10 x (1 – BF) x (edb – 80).

tlwb =	Wet-bulb temperature corresponding to enthalpy of air
	leaving evaporator coil (hlwb)
hlwb =	hewb –	total capacity (Btuh)
		4.5 x cfm

Where: hewb = Enthalpy of air entering evaporator coil

GENERAL FAN PERFORMANCE NOTES

NOTES:

1.Values include losses for filters, unit casing, and wet coils. See page 125 for accessory/factory-installed option 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 your fan motors up to the wattage ratings shown will not result in

nuisance tripping or premature motor failure. Unit warranty will not be affected. See Evaporator-Fan Motor Performance table on page 126 for additional information.

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

4.Interpolation is permissible. Do not extrapolate.

122