Packaged Rooftop Air Conditioners -RT-DS-8 (Trane Company (The))

Performance Data 20, 25 Ton

Table 38-1 — Supply Fan — 20 and 25 Ton

Cfm Std Air	Total Static Pressure
	,250		,500		,750		1.000		1.250		1.500		1.750		2.000
	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP
4000	387	.37	514	.65	621	.99	712	1.37	791	1.78	861	2.22	925	2.67	983	3.13
5000	420	.55	530	.85	631	1.22	721	1.62	800	2.06	872	2.54	939	3.05	1000	3.57
6000	469	.82	557	1.13	646	1.51	730	1.95	810	2.43	881	2.92	947	3.45	1009	4.01
7000	526	1.21	591	1.50	673	1.92	748	2.36	819	2.85	892	3.40	958	3.96	1018	4.54
8000	586	1.72	638	2.02	702	2.41	775	2.90	841	3.41	903	3.94	967	4.54	1029	5.17
9000	647	2.37	692	2.68	742	3.05	803	3.53	868	4.10	928	4.67	983	5.24	1038	5.87
10000	708	3.15	750	3.51	792	3.88	840	4.33	895	4.88	954	5.50	1010	6.14	1060	6.77
11000	769	4.10	809	4.51	846	4.90	886	5.33	931	5.85	982	6.46	1036	7.14	1088	7.85

Cfm Std Air	Total Static Pressure
	2.250		2.500		2.750		3.000		3.250		3.500		3.750		4.000
	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP
Air	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP
4000	1037	3.61	1087	4.09	1135	4.59	1180	5.11	1224	5.63	1265	6.16	1305	6.70	1343	7.26
5000	1056	4.12	1109	4.67	1159	5.24	1206	5.82	1251	6.40	1293	7.00	1334	7.61	1374	8.23
6000	1067	4.60	1122	5.21	1174	5.84	1223	6.48	1269	7.14	1314	7.80	1356	8.48	1397	9.16
7000	1076	5.14	1131	5.78	1183	6.45	1233	7.13	1281	7.84	1327	8.56	1371	9.29	1413	10.04
8000	1086	5.82	1140	6.47	1192	7.14	1241	7.85	1289	8.58	1335	9.34	1380	10.11	1423	10.90
9000	1095	6.56	1151	7.27	1203	8.00	1252	8.72	1299	9.47	1344	10.23	1388	11.02	1431	11.84
10000	1109	7.43	1160	8.14	1211	8.90	1262	9.70	1310	10.50	1355	11.30	1399	12.12	1441	12.94
11000	1136	8.54	1181	9.24	1225	9.97	1271	10.75	1318	11.58	1364	12.45	1409	13.33	1452	14.21

Cfm Std Air	Total Static Pressure
	4.250		4.500		4.750		5.000		5.250		5.500		5.750		6.000
	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP
Air	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP
4000	1380	7.82	1416	8.39	1450	8.97	1484	9.56	1517	10.16	1549	10.77	1580	11.38	1611	12.01
5000	1412	8.85	1449	9.49	1484	10.13	1519	10.78	1552	11.44	1585	12.11	1617	12.79	1648	13.47
6000	1436	9.85	1474	10.55	1511	11.26	1547	11.98	1581	12.70	1615	13.44	1647	14.18
7000	1453	10.80	1493	11.57	1531	12.34	1567	13.13	1603	13.92	1638	14.72
8000	1465	11.71	1505	12.54	1544	13.37	1582	14.22	1618	15.07	1654	15.94
9000	1473	12.68	1514	13.53	1553	14.41	1591	15.30	1629	16.20
10000	1482	13.79	1522	14.66	1561	15.55	1600	16.46	1637	17.40
11000	1493	15.10	1533	15.99	1572	16.89	1609	17.82	1646	18.76

Notes:

1. Fan performance for 20 and 25 ton rooftops is identical. However, note maximum motor hp size for each size. Contact your local Trane representative for information on oversized motors.

2. Shaded areas at table extremes note non-standard Bhp or Rpm selection. Contact your local Trane representative for more information.

3. Supply fan performance table includes internal resistance of rooftop. For total static pressure determination, system external static must be added to appropriate component static pressure drops (evaporator coil, filters, optional economizer, optional exhaust fan, optional heating system, optional cooling only extended casing, optional roof curb).

4. Maximum Cfm (for UL approval) as follows:

20 Ton — 9,000 Cfm
25 Ton — 11,000 Cfm

5. Minimum motor horsepower is 3 hp.

6. Maximum motor horsepower as follows:

20 Ton — 10 hp
25 Ton — 15 hp

7. Maximum 3 hp and 5 hp motor Rpm is 1,100, maximum 7.5 hp through 15 hp motor Rpm is 1655.

8. See RT-EB-104 for further details

rtds837a.jpg (37771 bytes)

Important:Maximum static pressure leaving the rooftop is 4.0" H₂O positive .The ststic pressure drops from the supply fan to the space cannot exceed 4.0" H₂O.

Packaged Rooftop Air Conditioners - RT-DS-8 - Page 837