Carrier 48AJ User Manual
Page 79
79
Table 33 — Motor Limitations
LEGEND
Bhp — Brake Horsepower
NOTES:
1. Extensive motor and electrical testing on the Carrier units has
ensured that the full horsepower range of the motor can be
utilized with confidence. Using your fan motors up to the
horsepower ratings shown in the Motor Limitations table will not
result in nuisance tripping or premature motor failure. Unit war-
ranty will not be affected.
2. All motors comply with Energy Policy Act (EPACT) Standards
effective October 24, 1997.
Table 34 — Air Quality Limits
LEGEND
NOTE: Variable Air Volume units will operate down to 70 cfm/ton in
Cooling mode. Performance at 70 cfm/ton is limited to unloaded
operation and may be additionally limited to edb and ewb conditions.
STANDARD EFFICIENCY MOTORS
Nominal Bhp
Maximum Bhp
Maximum Amps
Maximum
Watts
Maximum
Efficiency
230 v
460 v
575 v
5
5.9
14.6
7.9
6.0
5,030
87.5
7.5
8.7
22.0
—
—
7,717
84.1
9.5
—
12.0
10.0
8,008
88.5
10
10.2
28.0
—
—
8,502
89.5
11.8
—
14.6
12.0
9,836
89.5
15
15.3
43.8
—
—
12,543
91.0
18.0
—
21.9
19.0
14,756
91.0
20
22.4
62.0
—
—
18,363
91.0
23.4
—
28.7
23.0
19,183
91.0
25
28.9
72.0
—
—
23,511
91.7
29.4
—
37.4
31.0
23,918
91.7
30
35.6
95.0
—
—
28,742
92.4
34.7
—
48.0
47.0
28,015
92.4
40
42.0
110.0
55.0
48.8
33,690
93.0
HIGH EFFICIENCY MOTORS
Nominal Bhp
Maximum Bhp
Maximum Amps
Maximum
Watts
Maximum
Efficiency
230 v
460 v
5
5.9
15.8
7.9
4,918
89.5
7.5
8.7
22.0
—
7,078
91.7
9.5
—
12.0
7,728
91.7
10
10.2
28.0
—
8,298
91.7
11.8
—
15.0
9,600
91.7
15
15.3
43.8
—
12,273
93.0
18.0
21.9
14,439
93.0
20
22.4
58.2
—
17,853
93.6
23.4
—
28.7
18,650
93.6
25
28.9
73.0
—
23,034
93.6
29.4
—
36.3
23,432
93.6
30
35.6
82.6
—
28,374
93.6
34.7
—
41.7
27,656
93.6
40
42.0
110.0
55.0
33,156
94.5
UNIT
48AJ,AK,AW,A
Y
UNIT
48EJ,EK,EW,EY
MINIMUM HEATING
AIRFLOW
(Low Heat)
MINIMUM HEATING
AIRFLOW
(High Heat)
MINIMUM COOLING
AIRFLOW (VAV)
AT FULL LOAD OPERATION
MINIMUM COOLING
AIRFLOW
(CV
MAXIMUM
AIRFLOW
020
024
5,900
6,100
4,000
6,000
10,000
025
028
5,900
6,100
5,000
7,500
12,500
027
030
5,900
6,100
5,400
8,100
13,500
030
034
5,900
6,100
6,000
9,000
15,000
035
038
7,600
10,100
7,000
10,500
17,500
040
044
7,600
10,100
8,000
12,000
20,000
—
048
7,600
10,100
9,000
13,500
22,500
050
—
7,600
10,100
10,000
15,000
22,500
—
054
11,000
14,700
10,000
15,000
25,000
—
058
11,000
14,700
11,000
16,500
27,000
060
064
11,000
14,700
12,000
18,000
27,000
—
068
11,000
14,700
13,000
19,500
27,000
CV
— Constant Volume
edb
— Entering Dry Bulb
ewb — Entering Wet Bulb
VAV — Variable Air Volume