Carrier WEATHERMAKER 48/50AJ Operation And Service Manual page 26

Nominal
Bhp BkW
5 3.73
7.5 5.6
10 7.46
15 11.19
20 14.92
25 18.65
30 22.38
40 29.84
Nominal
Bhp BkW
5 3.73
7.5 5.6
10 7.46
15 11.19
20 14.92
25 18.65
30 22.38
40 29.84
LEGEND
Bhp — Brake Horsepower
BkW — Brake Kilowatts
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.
Table 40A — Air Quantity Limits (48AJ,AK,AW,AY,A2,A3,A4,A5)
MINIMUM HEATING
UNIT SIZE* AIRFLOW CFM
020
025
027
030
035 (AJ,AK,AW,AY)
035 (A2,A3,A4,A5)
036,040,041
050
051,060
LEGEND
CV — Constant Volume
VAV — Variable Air Volume
Table 39 — Motor Limitations
HIGH-EFFICIENCY MOTORS
Maximum
Bhp BkW
5.9 4.40
8.7 6.49
9.5 7.09
10.2 7.61
11.8 8.80
15.3 11.41
18.0 13.43
22.4 16.71
23.4 17.46
28.9 21.56
29.4 21.93
35.6 26.56
34.7 25.89
42.0 31.33
PREMIUM-EFFICIENCY MOTORS
Maximum
Bhp BkW
5.9
8.7
9.5
10.2
11.8
15.3 11.41
18.0 13.43
22.4 16.71
23.4 17.46
28.9 21.56
29.4 21.93
35.6 26.56
34.7 25.89
42.0 31.33
MINIMUM HEATING
AIRFLOW CFM
(Low Heat) (High Heat)
5,900 6,100
5,900 6,100
5,900 6,100
5,900 6,100
5,900 6,100
5,900 10,100
7,600 10,100
7,600 10,100
11,000 10,100
Maximum Amps
230 v 460 v
15.0 7.9
23.5 —
— 12.0
31.0 —
— 15.0
46.0 —
— 22.0
60.0 —
— 28.7
73.0 —
— 37.4
91.0 —
— 43.8
110.0 55.0
Maximum Amps
230 v
4.40 15.8
6.49 23.5
7.09 —
7.61 30.0
8.80 —
46.0
—
59.0
—
73.0
—
82.6
—
110.0
Using the fan motors up to the horsepower ratings shown in the Motor Lim-
itations table will not result in nuisance tripping or premature motor fail-
ures. Unit warranty will not be affected.
2. All motors comply with Energy Policy Act (EPACT) Standards effective
October 24, 1997.
MINIMUM COOLING
AIRFLOW (VAV) CFM
AT FULL LOAD
4,000
5,000
5,400
6,000
7,000
7,000
8,000
10,000
12,000
* Sizes 036,041, and 051 are 48AJ,AK,AW,AY only.
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
also limited by edb (entering dry bulb) and ewb (entering wet bulb) conditions.
26
Maximum
Watts
575 v
6.0 5,030
— 7,717
10.0 8,008
— 9,502
12.0 9,836
— 12,543
19.0 14,756
— 18,363
23.0 19,183
— 23,511
28.4 23,918
— 28,742
36.3 28,015
43.8 33,690
Maximum
Watts
460 v
7.9 4,918
— 7,078
12.0 7,728
— 8,298
15.0 9,600
— 12,273
22.0 14,439
— 17,853
28.7 18,650
— 23,034
36.3 23,432
— 28,374
41.7 27,656
55.0 33,156
MINIMUM COOLING
MAXIMUM AIRFLOW
AIRFLOW CFM
(CV)
6,000
7,500
8,100
9,000
10,500
10,500
12,000
15,000
18,000
Maximum
Efficiency
87.5
84.1
88.5
89.5
89.5
91.0
91.0
91.0
91.0
91.7
91.7
92.4
92.4
93.0
Maximum
Efficiency
89.5
91.7
91.7
91.0
91.7
91.7
93.0
93.0
93.6
93.6
93.6
93.6
93.6
94.5
CFM
10,000
12,500
13,500
15,000
17,500
17,500
20,000
22,500
27,000