Bryant 542J, 548F, 549B manual Shc, Entering AIR DRY-BULB Temp F Bypass, Factor

PERFORMANCE DATA

COOLING CAPACITIES

549B036 (3 Tons)

	Temp (F)				Indoor Entering Air — Cfm/Bf
	Outdoor		900/0.13			1200/0.17			1500/0.19
Entering Air					Indoor Entering Air — Ewb (F)
	(Edb)
		72	67	62	72	67	62	72	67	62
75	TC	41.7	38.4	34.1	43.2	40.3	37.3	44.4	41.4	36.8
	SHC	20.3	25.0	29.0	21.9	28.0	33.7	23.2	30.6	36.8
	kW	2.22	2.17	2.13	2.23	2.20	2.17	2.25	2.21	2.18
85	TC	40.5	37.2	32.4	42.1	39.0	36.0	43.1	40.2	37.2
	SHC	19.9	24.6	28.1	21.6	27.8	33.2	23.1	30.5	36.3
	kW	2.49	2.45	2.40	2.51	2.48	2.44	2.53	2.49	2.45
	TC	39.1	35.9	30.6	40.8	37.6	33.9	42.0	38.7	35.8

Standard Ratings

LEGEND

Bf — Bypass Factor Edb — Entering Dry-Bulb Ewb — Entering Wet-Bulb

kW — Compressor Motor Power Input

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

95 SHC 19.4 24.1 27.2 21.2 27.4 32.2 23.0 30.2 35.8

tldb = tedb –

(Btuh)

		kW	2.80	2.75	2.69	2.82		2.78	2.74	2.85	2.80	2.76
105		TC	37.6	33.9	28.8	39.2		36.0	32.3	40.1	37.0	34.6
		SHC	18.8	23.3	26.3	20.8		26.8	31.4	22.3	29.7	34.5
		kW	3.13	3.08	3.01	3.16		3.11	3.06	3.18	3.13	3.09
115		TC	35.9	31.9	27.9	37.4		34.2	30.2	38.3	35.3	32.5
		SHC	18.2	22.5	25.8	20.2		26.1	30.1	21.8	29.0	32.5
		kW	3.49	3.43	3.36	3.52		3.47	3.40	3.54	3.50	3.45
125		TC	34.2	30.5	26.3	35.5		32.1	28.6	36.3	33.2	31.0
		SHC	17.6	21.9	25.0	19.5		25.3	28.6	21.4	28.2	31.0
		kW	3.88	3.81	3.74	3.91		3.85	3.79	3.92	3.88	3.84
549B048 (4 Tons)
	Temp (F)					Indoor Entering Air — Cfm/Bf
	Outdoor			1200/0.13				1600/0.16			2000/0.19
Entering Air						Indoor Entering Air — Ewb (F)
		(Edb)
			72	67	62		72	67	62	72	67	62
75		TC	53.1	48.7	45.0		55.6	49.6	46.7	56.1	50.7	48.4
		SHC	25.1	30.7	36.7		27.3	32.6	40.5	28.2	35.1	44.6
		kW	2.92	2.86	2.82		2.96	2.87	2.84	2.96	2.88	2.87
85		TC	51.9	47.3	43.7		53.9	49.1	45.6	54.4	50.2	46.9
		SHC	24.9	30.2	36.2		26.7	33.4	40.4	27.7	36.1	44.2
		kW	3.29	3.22	3.19		3.32	3.25	3.21	3.32	3.27	3.23
95		TC	50.5	45.5	42.1		51.8	47.4	44.0	52.3	47.4	44.6
		SHC	24.3	29.5	35.6		26.0	32.8	39.9	27.0	34.3	42.4
		kW	3.70	3.62	3.58		3.71	3.65	3.61	3.72	3.64	3.61
105		TC	48.2	43.7	40.5		50.0	45.3	42.2	50.8	46.3	43.2
		SHC	23.6	28.9	35.1		25.7	32.0	39.5	27.2	34.8	42.4
		kW	4.14	4.06	4.04		4.16	4.08	4.05	4.18	4.10	4.06
115		TC	45.1	42.1	38.2		46.4	43.5	39.9	46.0	44.4	41.3
		SHC	22.1	28.7	34.0		23.6	31.9	38.6	23.8	34.4	41.3
		kW	4.57	4.55	4.50		4.59	4.56	4.52	4.58	4.57	4.54
125		TC	43.2	39.5	36.1		43.9	41.2	37.7	44.9	41.8	39.6
		SHC	21.7	27.7	33.0		23.0	31.3	37.6	24.5	33.9	39.6
		kW	5.10	5.05	5.02		5.11	5.08	5.05	5.13	5.09	5.08
549B060 (5 Tons)
	Temp (F)					Indoor Entering Air — Cfm/Bf
	Outdoor			1500/0.03				2000/0.05			2500/0.07
Entering Air						Indoor Entering Air — Ewb (F)
		(Edb)
			72	67	62		72	67	62	72	67	62
75		TC	70.4	62.3	52.9		73.6	68.2	58.4	75.5	69.1	64.9
		SHC	34.2	42.0	48.1		37.8	49.6	57.6	41.1	53.8	64.8
		kW	3.75	3.73	3.58		3.80	3.80	3.69	3.83	3.74	3.75
85		TC	68.5	58.9	50.8		71.0	65.4	56.5	72.7	66.9	62.7
		SHC	33.6	40.6	47.1		37.1	48.5	56.4	40.3	53.9	62.6
		kW	4.20	4.16	4.03		4.24	4.23	4.12	4.27	4.20	4.17
95		TC	65.8	55.3	47.4		68.8	62.2	53.5	70.5	64.0	60.3
		SHC	32.8	39.2	45.5		36.6	47.3	53.5	40.2	53.1	60.2
		kW	4.69	4.63	4.49		4.75	4.70	4.60	4.78	4.68	4.67
105		TC	63.0	51.4	43.6		65.6	58.1	50.2	67.1	60.7	57.5
		SHC	31.7	37.6	43.6		35.6	45.8	50.2	39.1	52.1	57.5
		kW	5.22	5.13	5.00		5.27	5.21	5.12	5.30	5.22	5.20
115		TC	59.4	48.2	40.8		62.1	52.6	46.8	63.7	55.5	52.6
		SHC	30.6	36.4	40.8		34.6	43.7	46.8	38.4	50.3	52.5
		kW	5.83	5.70	5.59		5.87	5.77	5.70	5.89	5.81	5.77
125		TC	53.8	44.6	40.4		56.8	46.3	43.3	59.5	47.8	47.3
		SHC	28.7	35.0	40.3		33.0	41.3	43.3	37.3	46.9	47.3
		kW	6.44	6.30	6.21		6.50	6.36	6.32	6.54	6.40	6.39

1.10 x cfm

tlwb = Wet-bulb temperature corresponding to enthalpy of air leaving evaporator coil (hlwb)

		total capacity
hlwb = hewb	–	(Btuh)
		4.5 x cfm

Where: hewb = Enthalpy of air entering evaporator coil

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

Interpolation is permissible.

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

549B036-120

75