Bryant FF1DNE, FF1DNA manual Cooling Capacities MBtuh, SHC Correction Factor

hlwb = hewb —

Leaving db = entering db —

COOLING CAPACITIES (MBtuh)

							COIL REFRIGERANT TEMPERATURE* (°F)
	EVAPORATOR
			35			40				45			50			55
	AIR
UNIT								Evap Air—Entering Wet-Bulb Temp (°F)
	CFM and
SIZE	BF	72	67	62	72	67		62	72	67	62	72	67	62	72	67	62
	400	27	23	19	25	20		16	22	17	13	19	14	10	15	10	8
	0.08	13	14	15	12	13		13	10	11	12	9	10	10	8	8	8
	500	30	25	21	28	22		18	24	19	15	21	15	12	16	11	10
018	0.10	14	16	17	13	14		16	12	13	14	10	11	12	9	10	10
	600	33	27	22	30	24		19	26	21	16	23	17	13	18	12	11
	0.13	15	17	19	14	16		18	13	14	16	11	13	13	10	11	11
	650	34	28	23	31	25		20	27	21	17	23	17	14	18	13	12
	0.14	16	18	20	14	17		18	13	15	16	12	13	14	10	11	12
	600	38	32	26	35	29		22	31	24	18	26	19	14	21	13	12
	0.05	18	20	21	16	18		19	15	16	17	13	14	14	11	11	12
024	700	41	34	28	38	30		24	33	26	20	28	20	16	22	15	13
	0.06	19	21	23	18	19		21	16	18	19	14	15	16	12	13	13
	875	46	38	31	41	34		27	37	29	22	31	23	19	25	17	16
	0.08	21	24	27	20	22		24	18	20	22	16	18	19	14	15	16
	750	46	38	31	41	33		26	36	28	21	30	22	17	24	16	14
	0.04	21	23	25	19	21		22	17	19	20	15	16	17	12	13	14
030	900	50	42	34	46	37		29	40	31	23	33	25	19	26	18	16
	0.06	23	26	28	21	23		25	19	21	22	17	18	19	14	15	16
	1075	54	45	37	49	40		32	43	34	26	37	27	22	29	19	18
	0.07	25	28	31	23	26		28	21	23	25	18	21	22	16	17	18

*Saturated suction leaving evaporator coil. Sensible Heat Capacity (1000 Btuh)

Gross Cooling Capacity (1000 Btuh)

BF—Bypass Factor

NOTES:

1.Net capacities shown include a deduction for evaporator fan motor heat.

2.Contact manufacturer for cooling capacities at conditions other than shown in table.

3.Formulas:

sensible heat cap.

1.09 x CFM

Leaving wb = wb corresponding to enthalpy of air leaving coil (hlwb)

total capacity (Btuh)

4.5 x CFM

where hewb = enthalpy of air entering coil.

4.Direct interpolation is permissible. Do not extrapolate.

5.SHC is based on 80°F db temperature of air entering coil. Below 80°F subtract (corr factor x CFM) from SHC.

Above 80°F db, add (corr factor x CFM) to SHC.

SHC CORRECTION FACTOR

		ENTERING AIR DRY-BULB TEMP (°F)
	79	78	77	76	75	Under 75
BYPASS	81	82	83	84	85	Over 85
FACTOR			Correction Factor
0.10	0.98	1.96	2.94	3.92	4.91	Use formula
0.20	0.87	1.74	2.62	3.49	4.36
						shown below
0.30	0.76	1.53	2.29	3.05	3.82

Interpolation is permissible.

Correction Factor = 1.09 x (1 – BF) x (db – 80)

OPTIONAL FIELD-INSTALLED ELECTRIC HEAT PACKAGES FOR FF1DNA AND FF1DNE

					HEATER		APPROX
	SIZE	NOMINAL	HEATER		CAPACITY
							SHIP.
HEATER PART NUMBER					(MBH)*
	USED	KW @	VOLTS—PHASE				WEIGHT
WITH TDR	WITH	240V	(60 Hz)	208V		230V	(lbs)
KFDEH0801D05	All	5	208/230—1	14.3		17.2	7
KFDEH0901D75	All	7.5	208/230—1	20.7		25.0	7
KFDEH1001D11	All	11	208/230—1	29.7		36.0	7

* Heater capacities shown here are for the largest size fan coil unit, and they do include blower motor heat.

—6—