Carrier 50PG03-16 Installation Instructions Manual page 27
Single−package rooftop units electric heater and single point box accessories
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Table 2 — Electrical Data — Units With Optional Powered Convenience Outlet (cont)
VOLTAGE
NOMINAL
COMPRESSOR
RANGE
POWER
UNIT
SUPPLY
50PG
MIN
MAX
RLA
VOLTS-PH-HZ
575-3-60
518 632
6.4
08
(cont)
575-3-60
518 632
6.4
208/230-3-60
187 253
16.0
09
460-3-60
414 506
7.1
LEGEND
FLA
− Full Load Amps
HACR − Heating, Air Conditioning and Refrigeration
IFM
− Indoor − Fan Motor
LRA
− Locked Rotor Amps
MCA
− Minimum Circuit Amps
MOCP − Maximum Overcurrent Protection
NEC
− National Electrical Code
OFM
− Outdoor−Fan Motor
RLA
− Rated Load Amps
*
Heater capacity (kW) is based on heater voltage of 208 v, 240 v, or 480 v. If power distribu-
tion voltage to unit varies from rated heater voltage, heater kW will vary accordingly.
†
Fuse or HACR circuit breaker.
NOTES:
1. In compliance with NEC requirements for multimotor and combination load equip-
ment (refer to NEC Articles 430 and 440), the overcurrent protective device for the
unit shall be fuse or HACR breaker.
2. Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imbalance in supply voltage is greater than
2%. Use the following formula to determine the percentage of voltage imbalance.
max voltage deviation from average voltage
% Voltage Imbalance
= 100 x
POWER
OFM
IFM
IFM
EXHAUST
FLA
FLA
TYPE
CRHEATER
FLA
LRA
PART NO.
239A00
240A00
Low
241A00
242A00
30.0
0.8
2.0
239A00
240A00
High
241A00
242A00
239A00
240A00
Low
241A00
242A00
30.0
0.8
2.8
3.0
239A00
240A00
High
241A00
242A00
225A00
226A00
5.2
Low
227A00
228A00
229A00
225A00
226A00
10.2
High
227A00
228A00
229A00
91
1.5
225A00
226A00
5.2
Low
227A00
228A00
229A00
3.0
225A00
226A00
10.2
High
227A00
228A00
229A00
232A00
233A00
2.6
Low
234A00
235A00
236A00
46
0.8
232A00
233A00
4.8
High
234A00
235A00
236A00
average voltage
ELECTRIC HEAT
POWER SUPPLY
NOMINAL
FLA
MCA
MOCP†
KW*
20.1
13.9
15.0
22.0
23.1
25.0
33.5
32.3
35.0
45.1
37.0
40.0
50.9
20.6
13.9
15.0
23.0
23.1
25.0
34.5
32.3
35.0
46.1
37.0
40.0
51.9
19.9
13.9
15.0
25.7
23.1
25.0
37.3
32.3
35.0
48.8
37.0
40.0
54.6
20.7
13.9
15.0
26.7
23.1
25.0
38.3
32.3
35.0
49.8
37.0
40.0
55.6
/
49.1/ 49.1
60/ 60
20.0/23.1
7.5/10.0
49.1/ 49.1
60/ 60
30.0/34.6 11.3/15.0
50.0/ 55.2
60/ 60
50.0/57.7 18.8/25.0
75.1/ 84.1
80/ 90
70.0/80.8 26.3/35.0 100.1/113.0
110/125
80.0/92.4 30.0/40.0 112.6/127.4
125/150
/
54.1/ 54.1
60/ 60
20.0/23.1
7.5/10.0
54.1/ 54.1
60/ 60
30.0/34.6 11.3/15.0
56.3/ 61.5
60/ 70
50.0/57.7 18.8/25.0
81.3/ 90.4
90/100
70.0/80.8 26.3/35.0 106.3/119.2
110/125
80.0/92.4 30.0/40.0 118.8/133.7
125/150
/
52.1/ 52.1
60/ 60
20.0/23.1
7.5/10.0
52.1/ 52.1
60/ 60
30.0/34.6 11.3/15.0
53.8/ 59.0
60/ 60
50.0/57.7 18.8/25.0
78.8/ 87.9
80/ 90
70.0/80.8 26.3/35.0 103.8/116.7
110/125
80.0/92.4 30.0/40.0 116.3/131.2
125/150
/
57.1/ 57.1
70/ 70
20.0/23.1
7.5/10.0
57.1/ 57.1
70/ 70
30.0/34.6 11.3/15.0
60.0/ 65.2
70/ 70
50.0/57.7 18.8/25.0
85.1/ 94.1
90/100
70.0/80.8 26.3/35.0 110.1/123.0
125/125
80.0/92.4 30.0/40.0 122.6/137.4
125/150
22.2
11.5
10.0
22.2
17.3
15.0
27.6
28.9
25.0
42.1
40.4
35.0
56.5
46.2
40.0
63.7
24.4
11.5
10.0
24.4
17.3
15.0
30.4
28.9
25.0
44.8
40.4
35.0
59.2
46.2
40.0
66.5
Example: Supply voltage is 460-3-60
AB = 224 v
BC = 231 v
AC = 226 v
Average Voltage =
Determine maximum deviation from average voltage.
(AB) 227 – 223 = 3 v
(BC) 231 – 227 = 4 v
(AC) 227 – 226 = 1 v
Maximum deviation is 4 v.
Determine percent of voltage imbalance.
% Voltage Imbalance
= 1.76%
This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%.
IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local electric
utility company immediately.
3. Single point kits CRSINGLE028A00 and CRSINGLE030A00 are not required if
field−supplied pressure connectors are used.
27
DISCONNECT SIZE
CRSINGLE
PART NO.
(NOTE3)
FLA
LRA
20
21
86
25
030A00
21
86
35
030A00
31
86
50
030A00
41
86
60
030A00
47
86
20
22
104
25
030A00
22
104
35
030A00
32
104
50
030A00
42
104
60
030A00
48
104
25
21
88
30
030A00
24
88
40
030A00
34
88
50
030A00
45
88
60
030A00
50
88
25
22
100
30
030A00
25
100
40
030A00
35
100
50
030A00
46
100
60
030A00
51
100
52/ 52
223/223
030A00
52/ 52
223/223
030A00
52/ 52
223/223
031A00
69/ 78
223/223
031A00
92/104
223/223
031A00
104/118
223/223
58/ 58
266/266
031A00
58/ 58
266/266
031A00
58/ 58
266/266
031A00
75/ 84
266/266
031A00
98/110
266/266
031A00
109/123
266/266
55/ 55
227/227
031A00
55/ 55
227/227
031A00
55/ 55
227/227
031A00
72/ 81
227/227
031A00
96/108
227/227
031A00
107/121
227/227
61/ 61
270/270
030A00
61/ 61
270/270
030A00
61/ 61
270/270
031A00
78/ 87
270/270
031A00
101/114
270/270
031A00
113/127
270/270
25
24
112
25
030A00
24
112
30
030A00
25
112
45
030A00
39
112
60
030A00
52
112
70
033A00
59
112
30
26
134
30
030A00
26
134
35
030A00
28
134
45
030A00
41
134
60
030A00
54
134
70
033A00
61
134
224 + 231 + 226
3
681
=
3
=
227
4
= 100 x
227
WIRING
FIG. NO.
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
16
17
17
15
15
16
17
17
15
15
16
17
17
15
15
16
17
17
15
15
15
15
19
15
15
15
15
19
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