Bryant 558F Air Conditioner User Manual


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Table 2D — Electrical Data (Units With Convenience Outlet) (558F091, 103, 121, 151) (cont)
LEGEND
*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
Example: Supply voltage is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v
= 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.
= 1.53%
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. 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.
4. Determine heater capacity using multiplication factors table below:
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
558F
UNIT
SIZE
NOMINAL
V-PH-Hz
IFM
TYPE
VOLTAGE
RANGE
COMPRESSOR
(ea)
OFM (ea)
IFM
FLA
HEATER
MODEL NO.
CRHEATER---A00
ELECTRIC HEAT POWER SUPPLY
DISCONNECT
SIZE*
SINGLE POINT
BOX P/N
CRSINGLE---A00
Min Max Qty RLA LRA Qty Hp FLA
Nominal
kW
FLA MCA MOCP† FLA LRA
151
208/230-3-60
STD
187 254 2 19 156 2
1
/
4
1.4
10.6
NONE —/— —/— 61.0/ 61.0 70/ 70** 65/ 65 364/364 —
017 7.8/10.4 21.7/ 25.0 61.0/ 61.0 70/ 70** 65/ 65 364/364 012
010 12.0/16.0 33.4/ 38.5 61.0/ 66.8 70/ 70** 65/ 65 364/364 012
012 24.0/32.0 66.7/ 77.0 102.6/114.9 110/125** 94/106 364/364 012
012 and 017 31.8/42.4 88.4/102.0 129.7/146.2 150/150** 119/135 364/364 015
010 and 012 37.6/50.0 104.2/120.3 149.6/169.0 150/175** 138/156 364/364 015
ALT 15
NONE —/— —/— 65.4/ 65.4 80/ 80** 70/ 70 383/383 —
017 7.8/10.4 21.7/ 25.0 65.4/ 65.4 80/ 80** 70/ 70 383/383 012
010 12.0/16.0 33.4/ 38.5 66.5/ 72.3 80/ 80** 70/ 70 383/383 012
012 24.0/32.0 66.7/ 77.0 108.1/120.4 110/125** 99/111 383/383 012
012 and 017 31.8/42.4 88.4/102.0 135.2/151.7 150/175** 124/140 383/383 015
010 and 012 37.6/50.0 104.2/120.3 155.1/174.5 175/175** 143/161 383/383 015
460-3-60
STD
414 508 2 9 75 2
1
/
4
0.7
4.8
NONE — — 28.7 35 30 176 —
013 16.5 19.8 33.5 35 31 176 011
014 27.8 33.4 47.8 45 46 176 011
015 33.0 39.7 58.3 60 54 176 011
014 and 016 41.7 50.2 71.4 80** 66 176 014
013 and 015 50.0 60.1 83.9 90** 77 176 014
ALT 7.4
NONE — — 31.3 35 33 215 —
013 16.5 19.8 36.8 40 34 215 011
014 27.8 33.4 51.0 60 49 215 011
015 33.0 39.7 61.6 70** 57 215 014
014 and 016 41.7 50.2 74.7 80** 69 215 014
013 and 015 50.0 60.1 87.1 90** 80 215 014
575-3-60
STD
518 632 2 7.4 54 2
1
/
4
0.7
4.8
NONE — — 23.3 30 25 129 —
018 17.0 17.1 28.3 30 26 129 011
019 34.0 34.1 49.6 45 46 129 011
018 and 019 51.0 51.2 71.0 80** 65 129 014
ALT 7.4
NONE — — 25.4 30 27 160 —
018 17.0 17.1 30.9 35 28 160 011
019 34.0 34.1 52.2 50 48 160 011
018 and 019 51.0 51.2 73.6 80** 68 160 014
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
= 100 x
max voltage deviation from average voltage
average voltage
Average Voltage =
452 + 464 + 455
3
=
1371
3
% Voltage Imbalance = 100 x
7
457
POWER EXHAUST
PART NO.
MCA
(230 v)
MCA
(460 v)
MCA
(575 v)
MOCP
(for separate
power source)
CRPWREXH021A01 N/A 0.9 N/A 15
CRPWREXH022A01 3.3 N/A 1.32 15
CRPWREXH023A01 N/A 1.8 N/A 15
CRPWREXH028A01 1.7 N/A 0.68 15
CRPWREXH029A01 N/A 1.0 N/A 15
CRPWREXH030A01 1.6 N/A 0.64 15
HEATER
RATING
VOLTAGE
ACTUAL HEATER VOLTAGE
200 208 230 240 380 440 460 480 550 575 600
240 0.694 0.751 0.918 1.000 — — — — — — —
480 — — — — 0.626 0.840 0.918 1.000 — — —
600 — — — — — — — — 0.840 0.918 1.000
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