Carrier 48PG20-28 specifications General Notes For Fan Performance Data Tables

Table 22 — Fan Performance — 48PGF28 — Horizontal Supply and Return Units

AIRFLOW									AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
				0.2				0.4				0.6				0.8				1.0
(Cfm)
			Rpm		Bhp		Rpm		Bhp		Rpm		Bhp		Rpm		Bhp		Rpm		Bhp
6,500		E	799		2.58	E	833		2.79	E	872		3.05		914		3.36	F	958		3.71
7,000			856		3.19		887		3.41	F	921		3.67	F	958		3.98		999		4.33
7,500		F	913		3.89	F	941		4.12		972		4.39		1006		4.69		1042		5.04
8,000			971		4.69		996		4.93		1024		5.20		1055		5.51	G	1088		5.86
8,500			1029		5.60		1052		5.85	G	1078		6.12	G	1106		6.44		1136		6.78
9,000		G	1087		6.62	G	1108		6.87		1132		7.16		1158		7.47		1185		7.82
9,500			1145		7.75		1165		8.02	H	1187		8.31	H	1211		8.63	H	1236		8.99
10,000		H	1203		9.01	H	1222		9.29		1243		9.59		1265		9.92		1288		10.28
10,500			1261		10.40		1279		10.69		1299		11.00		1319		11.34		1341		11.70
11,000			1320		11.93		1337		12.23		1355		12.55		1374		12.89		1394		13.26
11,500			1378		13.61		—		—		—		—		—		—		—		—
12,000			—		—		—		—		—		—		—		—		—		—
12,500			—		—		—		—		—		—		—		—		—		—
AIRFLOW									AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
				1.2				1.4				1.6				1.8				2.0
(Cfm)
			Rpm		Bhp		Rpm		Bhp		Rpm		Bhp		Rpm		Bhp		Rpm		Bhp
6,500		F	1005		4.12		1052		4.57		1100		5.06	G	1148		5.60		1195		6.17
7,000			1041		4.72	G	1084		5.16	G	1128		5.64		1172		6.17	H	1217		6.74
7,500		G	1080		5.43		1119		5.86		1160		6.33		1201		6.84		1242		7.40
8,000			1122		6.24		1158		6.66		1195		7.13	H	1233		7.63		1272		8.17
8,500			1167		7.16		1200		7.58	H	1234		8.04		1269		8.53		1304		9.06
9,000		H	1214		8.21	H	1244		8.62		1275		9.07		1308		9.56		1340		10.08
9,500			1262		9.37		1290		9.78		1319		10.23		1349		10.71		1379		11.23
10,000			1312		10.66		1338		11.08		1365		11.52		1392		12.00		—		—
10,500			1363		12.09		1387		12.51		—		—		—		—		—		—
11,000			—		—		—		—		—		—		—		—		—		—
11,500			—		—		—		—		—		—		—		—		—		—
12,000			—		—		—		—		—		—		—		—		—		—
12,500			—		—		—		—		—		—		—		—		—		—
	LEGEND
Bhp —	Brake Horsepower Input to Fan

Boldface indicates field-supplied motor/drive required.

NOTES:

1.Motor drive ranges:

(E)Low Range: 687-873 rpm, 5.75 bhp

(F)Mid-Low Range: 805-1007 rpm, 5.75 bhp

(G)Mid-High Range: 941-1176 rpm, 8.63 bhp

(H)High Range: 1014-1297 rpm, 11.50 bhp

All other rpms require field-supplied motor or drive.

2. See below for general fan performance notes.

GENERAL NOTES FOR FAN PERFORMANCE DATA TABLES

1.Static pressure losses (i.e., economizer, electric heat, etc.) must be added to external static pressure before entering Fan Performance table.

2.Interpolation is permissible. Do not extrapolate.

3.Fan performance is based on wet coils, clean filters, and casing losses. See Accessory/FIOP Static Pressure information on page 39.

4.Extensive motor and drive testing on these units ensures that the full horsepower range of the motor can be utilized with confidence. Using the fan motors up to the bhp rating shown will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected.

5.Use of a field-supplied motor may affect wire size. Recalculate the unit power supply MCA and MOCP if required. Contact the local Carrier repre- sentative for details.

6.Use the following formula to calculate Input Watts: Input Watts = Bhp x (746/motor eff.)

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