Bryant DuraPac 580F Series, Installation, Start-Up And Service Instructions Manual

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Table 5 — Electrical Data
LEGEND
*Fuse or HACR circuit breaker.
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 voltage
imbalance.
% Voltage Imbalance
EXAMPLE: Supply voltage is 460-3-60.
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 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%, con-
tact your local electric utility company immediately.
X. STEP 10 — MAKE OUTDOOR-AIR INLET ADJUST-
MENTS
A. Manual Outdoor-Air Damper
All units (except those equipped with a factory-installed
EconoMi$erIV) have a manual outdoor-air damper to provide
ventilation air.
Damper can be preset to admit up to 25% outdoor air into
return-air compartment. To adjust, loosen securing screws
and move damper to desired setting, then retighten screws
to secure damper (Fig. 18).
XI. STEP 11 — INSTALL OUTDOOR-AIR HOOD
The outdoor-air hood is common to 25% air ventilation and
EconoMi$erIV. If EconoMi$erIV is factory installed, all
electrical connections have been made and adjusted at the
factory. Assemble and install hood in the field.
UNIT
580F
NOMINAL
VOLTAGE
(3 Ph, 60 Hz)
VOLTAGE
RANGE
COMPRESSOR
OFM IFM
POWER
EXHAUST
COMBUSTION
FAN MOTOR
POWER
SUPPLY
No. 1 No. 1A No. 2
Min Max RLA LRA RLA LRA RLA LRA Qty Hp FLA (ea) Hp FLA FLA LRA FLA MCA MOCP*
180
208/230 187 253 32.1 195 — — 20.7 156 3 0.5 1.7 5.0 15.8/15.8
— — 0.57 82/82 110/110
4.6 18.8 0.57 86/86 110/110
460 414 508 16.4 95 — — 10 70 3 0.5 0.8 5.0 7.9
— — 0.30 41 50
2.3 6.0 0.30 43 50
210
208/230 187 253 30.1 225 — — 28.8 195 3 0.5 1.7 5.0 15.8/15.8
— — 0.57 87/87 110/110
4.6 18.8 0.57 92/92 110/110
460 414 508 15.5 114 — — 14.7 95 3 0.5 0.8 5.0 7.9
— — 0.30 44 50
2.3 6.0 0.30 47 60
240
208/230 187 253 42 239 — — 33.6 225 2 1 6.6 7.5 25.0/25.0
— — 0.57 124/124 150/150
4.6 18.8 0.57 129/129 150/150
460 414 508 19.2 125 — — 17.3 114 2 1 3.3 7.5 13.0
— — 0.30 61 80
2.3 6.0 0.30 63 80
300
208/230 187.2 253 20.7 156 20.7 156 47.1 245 6 0.5 1.7 10.0 28.0/28.0
— — 0.57 138/138 175/175
4.6 18.8 0.57 143/143 150/175
460 414 508 10 75 10 75 19.6 125 6 0.5 0.8 10.0 14.6
— — 0.30 64 80
2.3 6 0.30 66 80
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
AB = 452 v
BC = 464 v
AC = 455 v
Average Voltage =
452 + 464 + 455
3
=
1371
3
= 457
% Voltage Imbalance = 100 x
7
457
Fig. 18 — Standard 25% Outdoor-Air Section Details