Carrier 48SX024-048 User Manual
Page 38
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Table 13 — Dry-Coil Air Delivery* — Downflow Discharge at 230 and 460 V — Unit 48SX
(Deduct 10% from Cfm and Watts for 208 V Operation)
UNIT
48SX
MOTOR
SPEED
AIR
DELIVERY
EXTERNAL STATIC PRESSURE (in. wg)
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
024,
030
Low
Watts
280
275
265
255
250
245
240
t
t
t
t
Cfm
820
810
755
700
660
600
560
t
t
t
t
Med
Watts
365
360
350
345
340
330
320
310
300
t
t
Cfm
1025
1010
975
940
900
850
800
720
630
t
t
High
Watts
t
t
490
480
470
460
445
430
410
390
380
Cfm
t
t
1300
1255
1200
1150
1080
1005
915
790
620
036
Low
Watts
520
495
474
458
445
425
t
t
t
t
t
Cfm
1375
1335
1290
1240
1200
1140
t
t
t
t
t
Med
Watts
575
560
535
510
480
460
440
425
t
t
t
Cfm
1520
1490
1450
1400
1380
1300
1200
1080
t
t
t
High
Watts
t
t
t
t
650
614
575
540
510
480
t
Cfm
t
t
t
t
1560
1500
1380
1280
1170
1060
t
042
Low
Watts
490
480
470
460
450
430
410
390
t
t
t
Cfm
1400
1380
1340
1300
1250
1200
1140
1070
t
t
t
Med
Watts
590
580
560
545
525
505
480
450
420
t
t
Cfm
1600
1560
1540
1470
1430
1360
1300
1220
1120
t
t
High
Watts
t
t
t
t
t
700
670
640
600
560
500
Cfm
t
t
t
t
t
1780
1670
1600
1480
1340
1100
048
Low
Watts
1050
1000
970
930
870
810
750
680
600
t
t
Cfm
1850
1830
1800
1785
1750
1700
1640
1500
1330
t
t
High
Watts
t
t
t
1050
1000
930
870
810
740
665
t
Cfm
t
t
t
2000
1940
1850
1750
1635
1500
1300
t
*Air delivery values are without air filter and are for dry coil See Table 14 for wet coil pressure drop. Deduct field-supplied air filter pressure drop
and wet coil pressure drop to obtain external static pressure available for ducting.
tUnit air delivery is outside of operating range.
NOTE; Do not operate the unit at a cooling airflow that is less than 350 cfm for each 12,000 Btuh of rated cooling capacity Evaporator-coil icing
may occur at airflows below this point. Water blow-off may occur at airflows above 450 cfm per 12,000 Btuh of rated cooling capacity.
Table 14 — Wet Coil Pressure Drop
UNIT SIZE
AIRFLOW
(cfm)
PRESSURE DROP
(in. wg)
600
0.069
018*
700
0 082
800
0102
900
0116
600
0.039
024
700
0.058
800
0.075
900
0.088
900
0.088
030
1000
0.095
1200
0.123
1000
0.068
036
1200
0.088
1400
0.108
1600
0123
1000 ■;
0 048
042
1200
0.069
1400
0.088
1600
0.102
1400
0.068
048
1600
0.075
1800
0.088
1700
0.082
060*
1900
0.095
2100
0.108
2300
0.123
‘Unit 48SS only.
t
38