Goodman Mfg GCH9 service manual Blower Performance Specifications

BLOWER PERFORMANCE SPECIFICATIONS

BLOWER PERFORMANCE

(CFM & Temperature Rise vs. External Static Pressure)

Model		Tons AC				EXTERNAL STATIC PRESSURE (Inches Water Column)
	Motor
Heating Speed		at 0.5"	0.1			0.2			0.3			0.4			0.5			0.6	0.7	0.8
( As Shipped )	Speed	ESP	CFM	RISE		CFM	RISE		CFM	RISE		CFM	RISE		CFM	RISE		CFM	CFM	CFM
	HIGH	3.0	1352		29	1318		30	1260		31	1202		33	1128		35	1044	955	853
GCH90453BXA*	MED	2.5	1214		32	1172		34	1123		35	1064		37	1012		39	938	859	741
(MED-HI)	MED-LO	2.0	997		40	994		40	960		41	923		43	884		45	817	741	611
	LOW	1.5	757		52	753		52	734		54	704		56	674		59	620	524	438
	HIGH	3.0	1449		41	1409		42	1326		45	1273		47	1201		49	1194	1136	1018
GCH90703BXA*	MED	2.5	1192		50	1172		51	1141		52	1094		54	1046		57	973	904	793
(MED-HI)	MED-LO	2.0	981		61	962		62	943		63	917		65	888		67	830	764	665
	LOW	1.5	750		79	730		81	714		83	692		86	657		90	620	570	502
	HIGH	4.0	2069		29	1965		30	1871		32	1756		34	1661		36	1549	1415	1275
GCH90704CXA*	MED	3.5	1752		34	1724		34	1667		36	1603		37	1488		40	1402	1290	1082
(MED-HI)	MED-LO	3.0	1437		41	1437		41	1417		42	1369		43	1320		45	1256	1140	984
	LOW	2.5	1184		50	1177		50	1161		51	1132		52	1095		54	1047	928	837
	HIGH	4.0	1970		40	1874		42	1757		45	1667		48	1566		51	1431	1334	1182
GCH90904CXA*	MED	3.5	1713		46	1650		48	1572		50	1510		52	1418		56	1313	1211	1079
(MED-HI)	MED-LO	3.0	1439		55	1412		56	1370		58	1327		60	1260		63	1166	1078	956
	LOW	2.5	1183		67	1155		69	1122		71	1108		72	1062		75	1011	931	816
	HIGH	5.0	2147		37	2114		37	2057		39	2030		39	1978		40	1889	1784	1713
GCH90905DXA*	MED	4.0	1675		47	1686		47	1640		48	1623		49	1557		51	1501	1455	1360
(MED-HI)	MED-LO	3.5	1489		53	1470		54	1436		55	1409		56	1361		58	1318	1243	1130
	LOW	3.0	1307		61	1265		63	1234		64	1203		66	1168		68	1096	1053	991
	HIGH	5.0	2134		46	2103		47	2029		48	1941		51	1906		51	1818	1733	1625
GCH91155DXA*	MED	4.0	1678		58	1643		60	1643		60	1577		62	1527		64	1489	1423	1339
(MED-HI)	MED-LO	3.5	1453		68	1440		68	1426		69	1363		72	1349		73	1314	1253	1205
	LOW	3.0	1259		78	1239		79	1220		80	1181		83	1159		85	1118	1082	1015

1.CFM in chart is without filters(s). Filters do not ship with this furnace, but must be provided by the installer.

2.All furnaces ship as high speed cooling. Installer must adjust blower cooling speed as needed.

3.For most jobs, about 400 CFM per ton when cooling is desirable.

4.INSTALLATION IS TO BE ADJUSTED TO OBTAIN TEMPERATURE RISE WITHIN THE RANGE SPECIFIED ON THE RATING PLATE.

5.The chart is for information only. For satisfactory operation, external static pressure must not exceed value shown on rating plate. The shaded area indicates ranges in excess of maximum external static pressure allowed when heating. The data for 0.6" w.c. to 0.8" w.c. is shown for air conditioning purposes only.

6 The dashed (---) areas indicate a temperature rise not recommended for this model.

7.The above chart is for U.S. furnaces installed at 0-4000 feet. At higher altitudes, a properly derated unit will have approximately the same temperature rise at a particular CFM, while the ESP at that CFM will be lower.

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