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Table 2B — Electrical Data (Units Without Convenience Outlet) (558F091, 103, 121, 151) (cont)
VOLTAGE
558F
RANGE
NOMINAL
IFM
UNIT
V-PH-Hz
TYPE
SIZE
Min
Max
STD
208/230-3-60
187
254
ALT
STD
151
460-3-60
414
508
ALT
STD
575-3-60
518
632
ALT
LEGEND
FLA
— Full Load Amps
HACR
— Heating, Air Conditioning and Refrigeration
IFM
— Indoor (Evaporator) Fan Motor
LRA
— Locked Rotor Amps
MCA
— Minimum Circuit Amps
MOCP — Maximum Overcurrent Protection
NEC
— National Electrical Code
OFM
— Outdoor (Condenser) Fan Motor
RLA
— Rated Load Amps
*Used to determine minimum disconnect per NEC.
†Fuse or HACR circuit breaker per NEC.
**Fuse only.
††Compressor no. 1 is shown in table.
208/230-3-60: Compressor no. 2 RLA is 14.1 amps and LRA is 105 amps.
460-3-60: Compressor no. 2 RLA is 7.1 amps and LRA is 55 amps.
575-3-60: Compressor no. 2 RLA is 6.4 amps and LRA is 40 amps.
NOTES:
1. In compliance with NEC requirements for multimotor and combination load equipment (refer to NEC
Articles 430 and 440), the overcurrent protective device for the unit shall be fuse or HACR breaker.
Canadian units may be fuse or circuit 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 percent of voltage imbalance.
% Voltage Imbalance
max voltage deviation from average voltage
= 100 x
average voltage
Example: Supply voltage is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v
Average Voltage =
=
= 457
Determine maximum deviation from average voltage.
(AB) 457 – 452 = 5 v
(BC) 464 – 457 = 7 v
(AC) 457 – 455 = 2 v
Maximum deviation is 7 v.
Determine percent of voltage imbalance.
7
% Voltage Imbalance = 100 x
457
= 1.53%
This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%.
All manuals and user guides at all-guides.com
COMPRESSOR
OFM (ea)
(ea)
IFM
FLA
Qty
RLA
LRA
Qty
Hp
FLA
10.6
2
19
156
2
1
/
1.4
4
15
4.8
2
9
75
2
1
/
0.7
4
7.4
4.8
1
2
7.4
54
2
/
0.7
4
7.4
452 + 464 + 455
3
1371
3
ELECTRIC HEAT
HEATER
MODEL NO.
Nominal
CRHEATER---A00
FLA
kW
NONE
—/—
—/—
017
7.8/10.4
21.7/ 25.0
010
12.0/16.0
33.4/ 38.5
012
24.0/32.0
66.7/ 77.0
012 and 017
31.8/42.4
88.4/102.0
010 and 012
37.6/50.0
104.2/120.3
NONE
—/—
—/—
017
7.8/10.4
21.7/ 25.0
010
12.0/16.0
33.4/ 38.5
012
24.0/32.0
66.7/ 77.0
012 and 017
31.8/42.4
88.4/102.0
010 and 012
37.6/50.0
104.2/120.3
NONE
—
—
013
16.5
19.8
014
27.8
33.4
015
33.0
39.7
014 and 016
41.7
50.2
013 and 015
50.0
60.1
NONE
—
—
013
16.5
19.8
014
27.8
33.4
015
33.0
39.7
014 and 016
41.7
50.2
013 and 015
50.0
60.1
NONE
—
—
018
17.0
17.1
019
34.0
34.1
018 and 019
51.0
51.2
NONE
—
—
018
17.0
17.1
019
34.0
34.1
018 and 019
51.0
51.2
IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local electric utility
company immediately.
3. For units with power exhaust: If a single power source is to be used, size wire to include power
exhaust MCA and MOCP. Check MCA and MOCP when power exhaust is powered through the
unit (must be in accordance with NEC and/or local codes). Determine the new MCA including the
power exhaust using the following formula:
MCA New = MCA unit only + MCA of Power Exhaust
For example, using a 558FPX091000 unit with MCA = 40.1 and MOCP = 45, with
CRPWREXH030A01 power exhaust.
MCA New = 40.1 amps + 1.6 amps = 41.7 amps
If the new MCA does not exceed the published MOCP, then MOCP would not change. The MOCP
in this example is 45 amps, the MCA New is below 45, therefore the MOCP is acceptable. If "MCA
New" is larger than the published MOCP, raise the MOCP to the next larger size. For separate
power, the MOCP for the power exhaust will be 15 amps per NEC.
POWER EXHAUST
PART NO.
CRPWREXH021A01
CRPWREXH022A01
CRPWREXH023A01
CRPWREXH028A01
CRPWREXH029A01
CRPWREXH030A01
4. Determine heater capacity using multiplication factors table below:
HEATER
RATING
200
VOLTAGE
240
0.694 0.751 0.918 1.000
480
—
600
—
NOTE: The following equation converts kW of heat energy to Btuh: kW x 3.412 = Btuh.
EXAMPLE: 32.0 kW (at 240 v) heater on 208 v
= 32.0 (.751 mult factor)
= 24.0 kW capacity at 208 v
—
—
15
DISCONNECT
POWER SUPPLY
SIZE*
MCA
MOCP†
FLA
56.2/ 56.2
70/ 70**
59/ 59
359/359
56.2/ 56.2
70/ 70**
59/ 59
359/359
56.2/ 61.4
70/ 70**
59/ 59
359/359
96.6/109.5
100/110**
89/101
359/359
123.7/140.8
125/150**
114/129
359/359
143.5/163.6
150/175**
132/151
359/359
60.6/ 60.6
70/ 70**
64/ 64
378/378
60.6/ 60.6
70/ 70**
64/ 64
378/378
60.6/ 66.9
70/ 80**
64/ 64
378/378
102.1/115.0
110/125**
94/106
378/378
129.2/146.3
150/150**
119/135
378/378
149.0/169.1
150/175**
137/156
378/378
26.5
30
28
30.8
35
28
47.8
45
44
55.6
60
51
68.7
70**
63
81.2
90**
75
29.1
35
31
34.1
40
31
51.0
60
47
58.9
60
54
71.9
80**
66
84.4
90**
78
21.6
25
23
26.1
30
24
47.5
45
44
68.8
70**
63
23.7
30
25
28.7
35
26
50.1
50
46
71.4
80**
66
MCA
MCA
MCA
(230 v)
(460 v)
(575 v)
N/A
0.9
N/A
3.3
N/A
1.32
N/A
1.8
N/A
1.7
N/A
0.68
N/A
1.0
N/A
1.6
N/A
0.64
ACTUAL HEATER VOLTAGE
208
230
240
380
440
460
—
—
—
—
—
—
0.626 0.840 0.918 1.000
—
—
—
—
—
—
SINGLE POINT
BOX P/N
CRSINGLE---A00
LRA
—
012
012
012
015
015
—
012
012
012
015
015
174
—
174
011
174
011
174
011
174
014
174
014
213
—
213
011
213
011
213
011
213
014
213
014
127
—
127
011
127
011
127
014
159
—
159
011
159
011
159
014
MOCP
(for separate
power source)
15
15
15
15
15
15
480
550
575
600
—
—
—
—
—
—
—
—
0.840 0.918 1.000
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