Carrier 50PG20-28 Controls, Start-Up, Operation, Service And Troubleshooting Instructions page 30

Table 26 -- Fan Performance -- 50PG28 -- Horizontal Supply/Return Units
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
AIRFLOW 0.2
(Cfm)
E
F
G
H
6,500
7,000
7,500
8,000
8,500
9,000
9,500
10,000
10,500
11,000
11,500
12,000
12,500
Rpm
759
810
862
913
965
1017
1069
1121
1173
1226
1278
1331
Bhp
289 E
347
412 F
484
563
650 G
745
848
960 H
1081
12.11
13.51
0.4
Rpm
8O4
853
903
953
1003
1054
1105
1156
1207
1259
1310
518
599
689
786
892
1006
1130
12.62
Bhp
317 E
377
443 F
G
H
0.6
Rpm
844
891
939
988
1037
1087
1137
1187
1238
1288
1339
0.8
Bhp Rpm
342 883
404 F 928
472 974
548 1021
632 G 1069
723 1118
822 1167
930 1216
H
1047 1266
11.72 1316
13.07 1366
Bhp
368
430
500
577
662
755
856
966
1085
12.12
13.49
1.0
Rpm
F 922
964
1008
1053
G
1100
1147
1195
H 1243
1292
1342
Bhp
396
458
529
607
693
787
889
1001
1121
12.50
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
AIRFLOW 1.2 1.6 1.8
(Cfm)
6,500
7,000
7,500
8,000
8,500
9,000
9,500
10,000
10,500
11,000
11,500
12,000
12,500
F
G
H
Rpm
962
1000
1041
1085
1129
1175
1222
1270
1318
1366
Bhp
427 F
488
558
G
637
723
818
922
H
1034
11.56
12.86
1.4
Rpm
1003
1037
1075
1116
1159
1204
1249
1296
1343
1390
Bhp
461
521
G
590
668
755
Rpm Bhp Rpm
1045 498 1090
1075 556 G 1115
1110 624 1145
1148 701 1180
1189 788 H 1219
850 H 1232 883
955 1276 988
1068 1321 11.02
11.90 1367 12.25
13.22 -- --
1260
1302
1346
1391
Bhp
541
595
661
736
822
918
10.22
11.37
12.61
2.0
Rpm
1135
G
1155
1182
1214
H
1249
1288
1329
1371
Bhp
587
638
701
774
859
953
10.58
11.72
LEGEND
Bhp --
BrakeHorsepowerlnputtoFan
Boldface indicates field-supplied motor/drive required.
NOTES:
1. Motor drive ranges:
(E) Low Range: 687-873, 5.75 Bhp
(F) Mid-Low Range: 805-1007, 5,75 Bhp
(G) Mid-High Range: 941-1176, 863 Bhp
(H) High Range: 1014-1297, 11.50 Bhp
All other rpms require field-supplied motor or drive.
2. See betow for general fan performance notes.
GENERAL NOTES FOR FAN PERFORMANCE DATA TABLES
1 Static pressure losses from accessories and options (HumidFMiZer
TM,
economizer, etc.) must be added to externaI static pressure before enter-
ing Fan Performance table. Refer to Tables 31 and 32 for Accessory/
FlOP Static Pressure information
2 Extensive motor and electrical testing on these units ensures that the full
range of the motor can be utitized with confidence Using the fan motors
up to the bhp ratings shown wilt not result in nuisance tripping or prema-
ture motor faiture. Unit warranty will not be affected See Tables 29 and
30 (Evaporator-Fan Motor Specifications) on page 31 and 32 for addi-
tional information.
3. Use of a field-suppIied motor may affect wire sizing. Contact your local
Carrier representative for detaits
4. InterpoIation is permissible. Do not extrapolate
Table 27 -- Air Quantity Limits (48PG20-28 Units)
48PG
Minimum Cfm
5000
GASHEAT
COOLING
Maximum Cfm
9,000
10,000
12,000
High Heat (8 Cell)
20 V1edium Heat (8 Cell)
Low Heat (5 Cell)
High Heat (8 Cell)
24 5500 _edium Heat (8 Cell)
Low Heat (5 Cell)
High Heat (8 Cell)
28 6500 _edium Heat (8 Cell)
Low Heat (5 Cell)
*7000 cfm minimum recommended above 1 0 in wg external static pressure.
HEATING
(NAT. GAS,
VERTICAL)
MINIMUM CFM
5522
4977
4218
5522
4977
4218
5522
4977
4218
HEATING
(NAT. GAS,
HORIZONTAL)
MINIMUM CFM
5522
4977
4218
5522
4977
4218
5470*
4977*
4218
HEATING
(PROPANE,
VERTICAL)
MINIMUM CFM
5522
4480
4218
5522
4480
4218
5522
4480
4218
HEATING
(PROPANE,
HORIZONTAL)
MINIMUM CFM
4920
4480
3796
4920
4480
3796
4920*
4480*
3796
3O