26
Table 39 — Motor Limitations
LEGEND
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 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.
Table 40A — Air Quantity Limits (48AJ,AK,AW,AY)
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
also limited by edb (entering dry bulb) and ewb (entering wet bulb) conditions.
Table 40B — Air Quantity Limits (50AJ,AK,AW,AY)
*Operation at these levels may be limited by entering evaporator air wet bulb temperatures.
HIGH-EFFICIENCY MOTORS
Nominal
Maximum
Maximum Amps
Maximum
Watts
Maximum
Efficiency
Bhp
BkW
Bhp
BkW
230 v
460 v
575 v
5
3.73
5.9
4.40
14.6
7.9
6.0
5,030
87.5
7.5
5.6
8.7
6.49
22
—
—
7,717
84.1
9.5
7.09
—
12.0
10.0
8,008
88.5
10
7.46
10.2
7.61
28
—
—
9,502
89.5
11.8
8.80
—
14.6
12.0
9,836
89.5
15
11.19
15.3
11.41
43.8
—
—
12,543
91.0
18.0
13.43
—
21.9
19.0
14,756
91.0
20
14.92
22.4
16.71
62
—
—
18,363
91.0
23.4
17.46
—
28.7
23.0
19,183
91.0
25
18.65
28.9
21.56
72
—
—
23,511
91.7
29.4
21.93
—
37.4
31.0
23,918
91.7
30
22.38
35.6
26.56
95
—
—
28,742
92.4
34.7
25.89
—
48.0
47.0
28,015
92.4
40
29.84
42.0
31.33
110
55.0
48.8
33,690
93.0
PREMIUM-EFFICIENCY MOTORS
Nominal
Maximum
Maximum Amps
Maximum
Watts
Maximum
Efficiency
Bhp
BkW
Bhp
BkW
230 v
460 v
5
3.73
5.9
4.40
15.8
7.9
4,918
89.5
7.5
5.6
8.7
6.49
22
—
7,078
91.7
9.5
7.09
—
12.0
7,728
91.7
10
7.46
10.2
7.61
28
—
8,298
91.0
11.8
8.80
—
15.0
9,600
91.7
15
11.19
15.3
11.41
43.8
—
12,273
91.7
18.0
13.43
—
21.9
14,439
93.0
20
14.92
22.4
16.71
58.2
—
17,853
93.0
23.4
17.46
—
28.7
18,650
93.6
25
18.65
28.9
21.56
73
—
23,034
93.6
29.4
21.93
—
36.3
23,432
93.6
30
22.38
35.6
26.56
82.6
—
28,374
93.6
34.7
25.89
—
41.7
27,656
93.6
40
29.84
42.0
31.33
110.0
55.0
33,156
94.5
Bhp
—
Brake Horsepower
BkW
—
Brake Kilowatts
UNIT
48AJ,AK,AW,AY
MINIMUM HEATING
AIRFLOW CFM
(Low Heat)
MINIMUM HEATING
AIRFLOW CFM
(High Heat)
MINIMUM COOLING
AIRFLOW (VAV) CFM
AT FULL LOAD
MINIMUM COOLING
AIRFLOW CFM
(CV)
MAXIMUM AIRFLOW
CFM
020
5,900
6,100
4,000
6,000
10,000
025
5,900
6,100
5,000
7,500
12,500
027
5,900
6,100
5,400
8,100
13,500
030
5,900
6,100
6,000
9,000
15,000
035,036
5,900
6,100
7,000
10,500
17,500
040,041
7,600
10,100
8,000
12,000
20,000
050
7,600
10,100
10,000
15,000
22,500
051,060
11,000
10,100
12,000
18,000
27,000
CV
—
Constant Volume
VAV
—
Variable Air Volume
UNIT
COOLING
ELECTRIC HEAT
Min CFM
Max CFM*
Min CFM
Max CFM
50AJ,AW020
6,000
10,000
6,000
15,000
50AK,AY020
4,000
10,000
50AJ,AW025
7,500
12,500
50AK,AY025
5,000
12,500
50AJ,AW027
8,100
13,500
50AK,AY027
5,400
13,500
50AJ,AW030
9,000
15,000
50AK,AY030
6,000
15,000
50AJ,AW035,036
10,500
17,500
50AK,AY035,036
7,000
17,500
50AJ,AW040,041
12,000
20,000
10,500
20,000
50AK,AY040,041
8,000
20,000
50AJ,AW050
13,500
20,000
50AK,AY050
10,000
20,000
50AJ,AW051,060
18,000
27,000
15,000
27,000
50AK,AY051,060
12,000
27,000
Содержание WEATHERMAKER 48AJ020
Страница 95: ...95 Fig 13 Typical Main Control Box Wiring Schematic A48 7787 ...
Страница 96: ...96 TO NEXT PAGE Fig 14 Auxiliary Control Box Wiring Schematic A48 7294 ...
Страница 97: ...97 LEN PORT FOR USE WITH NAVIGATOR Fig 14 Auxiliary Control Box Wiring Schematic cont A48 7809 ...
Страница 98: ...98 Fig 15 Typical 2 Stage Gas Heat Wiring Schematic Size 051 and 060 Units Shown A48 6866 ...
Страница 99: ...99 TO NEXT PAGE Fig 16 Typical Staged Gas Heat Wiring Schematic Size 051 and 060 Units Shown A48 7296 ...
Страница 100: ...100 FROM PREVIOUS PAGE Fig 16 Typical Staged Gas Heat Wiring Schematic Size 051 and 060 Units Shown cont A48 7297 ...
Страница 101: ...101 Fig 17 Typical Electric Heat Control Schematic 50AJ AK AW AY Size 051 and 060 Units Shown A48 6689 ...
Страница 102: ...102 TO NEXT PAGE Fig 18 Typical Power Schematic Size 051 and 060 Units Shown A48 7298 ...
Страница 103: ...103 FROM PREVIOUS PAGE Fig 18 Typical Power Schematic Size 051 and 060 Units Shown cont A48 7299 ...
Страница 104: ...104 Fig 19 Controls Option Wiring Schematic A48 7810 ...
Страница 105: ...105 Fig 20 Small Chassis Component Location Size 020 035 Units A48 7301 ...
Страница 106: ...106 Fig 21 Large Chassis Component Locations Size 036 060 Units A48 7302 ...